diff --git a/.gitignore b/.gitignore
index 7e9dec0..feddc91 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,3 +4,4 @@ dist/
 *.sqlite
 *.db
 .DS_Store
+.a0/
diff --git a/backend/Dockerfile b/backend/Dockerfile
index 441b38e..0415174 100644
--- a/backend/Dockerfile
+++ b/backend/Dockerfile
@@ -1,13 +1,9 @@
-FROM node:22-alpine
-RUN apk add --no-cache curl
-
+FROM node:20-alpine
 WORKDIR /app
-
-COPY package*.json ./
-RUN npm ci --only=production
-
+RUN apk add --no-cache wget
+COPY package.json package-lock.json* ./
+RUN npm install
 COPY . .
-
-EXPOSE 5000
-
-CMD ["node", "server.js"]
+RUN npm run build
+EXPOSE 3001
+CMD ["node", "dist/index.js"]
diff --git a/backend/config/database.js b/backend/config/database.js
deleted file mode 100644
index abdedc3..0000000
--- a/backend/config/database.js
+++ /dev/null
@@ -1,27 +0,0 @@
-const { Sequelize } = require('sequelize');
-
-const sequelize = new Sequelize(
-  process.env.DB_NAME || 'webcad',
-  process.env.DB_USER || 'webcad',
-  process.env.DB_PASSWORD || 'webcad',
-  {
-    host: process.env.DB_HOST || 'postgres',
-    port: process.env.DB_PORT || 5432,
-    dialect: 'postgres',
-    logging: false,
-  }
-);
-
-const connectDB = async () => {
-  try {
-    await sequelize.authenticate();
-    console.log('PostgreSQL connected.');
-    await sequelize.sync();
-    console.log('Database synced.');
-  } catch (err) {
-    console.error('DB connection error:', err.message);
-    setTimeout(connectDB, 5000);
-  }
-};
-
-module.exports = { sequelize, connectDB };
diff --git a/backend/config/passport.js b/backend/config/passport.js
deleted file mode 100644
index 9c35d1c..0000000
--- a/backend/config/passport.js
+++ /dev/null
@@ -1,23 +0,0 @@
-const passport = require('passport');
-const JwtStrategy = require('passport-jwt').Strategy;
-const ExtractJwt = require('passport-jwt').ExtractJwt;
-const User = require('../models/User');
-
-const opts = {
-  jwtFromRequest: ExtractJwt.fromAuthHeaderAsBearerToken(),
-  secretOrKey: process.env.JWT_SECRET || 'dev_secret_change_in_production',
-};
-
-passport.use(new JwtStrategy(opts, async (jwt_payload, done) => {
-  try {
-    const user = await User.findByPk(jwt_payload.id);
-    if (user) {
-      return done(null, user);
-    }
-    return done(null, false);
-  } catch (err) {
-    return done(err, false);
-  }
-}));
-
-module.exports = passport;
diff --git a/backend/middleware/auth.js b/backend/middleware/auth.js
deleted file mode 100644
index 679fb63..0000000
--- a/backend/middleware/auth.js
+++ /dev/null
@@ -1,6 +0,0 @@
-const passport = require('passport');
-
-// Protect routes with JWT
-const authenticate = passport.authenticate('jwt', { session: false });
-
-module.exports = authenticate;
diff --git a/backend/models/Block.js b/backend/models/Block.js
deleted file mode 100644
index 5052ce3..0000000
--- a/backend/models/Block.js
+++ /dev/null
@@ -1,33 +0,0 @@
-const { DataTypes } = require('sequelize');
-const { sequelize } = require('../config/database');
-const User = require('./User');
-
-const Block = sequelize.define('Block', {
-  id: {
-    type: DataTypes.INTEGER,
-    primaryKey: true,
-    autoIncrement: true,
-  },
-  name: {
-    type: DataTypes.STRING,
-    allowNull: false,
-  },
-  svg_data: {
-    type: DataTypes.TEXT,
-    allowNull: false,
-  },
-  category: {
-    type: DataTypes.STRING,
-    allowNull: true,
-    defaultValue: 'Allgemein',
-  },
-  is_public: {
-    type: DataTypes.BOOLEAN,
-    defaultValue: true,
-  },
-});
-
-Block.belongsTo(User, { foreignKey: 'userId', allowNull: true, onDelete: 'SET NULL' });
-User.hasMany(Block, { foreignKey: 'userId' });
-
-module.exports = Block;
diff --git a/backend/models/Drawing.js b/backend/models/Drawing.js
deleted file mode 100644
index 02dadaf..0000000
--- a/backend/models/Drawing.js
+++ /dev/null
@@ -1,29 +0,0 @@
-const { DataTypes } = require('sequelize');
-const { sequelize } = require('../config/database');
-const User = require('./User');
-
-const Drawing = sequelize.define('Drawing', {
-  id: {
-    type: DataTypes.INTEGER,
-    primaryKey: true,
-    autoIncrement: true,
-  },
-  name: {
-    type: DataTypes.STRING,
-    allowNull: false,
-    defaultValue: 'Unbenannt',
-  },
-  canvas_json: {
-    type: DataTypes.TEXT,
-    allowNull: true,
-  },
-  thumbnail: {
-    type: DataTypes.TEXT,
-    allowNull: true,
-  },
-});
-
-Drawing.belongsTo(User, { foreignKey: 'userId', onDelete: 'CASCADE' });
-User.hasMany(Drawing, { foreignKey: 'userId' });
-
-module.exports = Drawing;
diff --git a/backend/models/User.js b/backend/models/User.js
deleted file mode 100644
index 82ee87a..0000000
--- a/backend/models/User.js
+++ /dev/null
@@ -1,31 +0,0 @@
-const { DataTypes } = require('sequelize');
-const { sequelize } = require('../config/database');
-const bcrypt = require('bcryptjs');
-
-const User = sequelize.define('User', {
-  id: {
-    type: DataTypes.INTEGER,
-    primaryKey: true,
-    autoIncrement: true,
-  },
-  email: {
-    type: DataTypes.STRING,
-    unique: true,
-    allowNull: false,
-    validate: { isEmail: true },
-  },
-  password: {
-    type: DataTypes.STRING,
-    allowNull: false,
-  },
-});
-
-User.beforeCreate(async (user) => {
-  user.password = await bcrypt.hash(user.password, 10);
-});
-
-User.prototype.validatePassword = async function (password) {
-  return bcrypt.compare(password, this.password);
-};
-
-module.exports = User;
diff --git a/backend/package-lock.json b/backend/package-lock.json
deleted file mode 100644
index b6967e3..0000000
--- a/backend/package-lock.json
+++ /dev/null
@@ -1,2031 +0,0 @@
-{
-  "name": "backend",
-  "version": "1.0.0",
-  "lockfileVersion": 3,
-  "requires": true,
-  "packages": {
-    "": {
-      "name": "backend",
-      "version": "1.0.0",
-      "license": "ISC",
-      "dependencies": {
-        "bcryptjs": "^3.0.3",
-        "cors": "^2.8.6",
-        "dxf-parser": "^1.1.2",
-        "express": "^5.2.1",
-        "jsonwebtoken": "^9.0.3",
-        "multer": "^2.1.1",
-        "passport": "^0.7.0",
-        "passport-jwt": "^4.0.1",
-        "passport-local": "^1.0.0",
-        "pg": "^8.21.0",
-        "sequelize": "^6.37.8",
-        "sqlite3": "^6.0.1"
-      }
-    },
-    "node_modules/@isaacs/fs-minipass": {
-      "version": "4.0.1",
-      "resolved": "https://registry.npmjs.org/@isaacs/fs-minipass/-/fs-minipass-4.0.1.tgz",
-      "integrity": "sha512-wgm9Ehl2jpeqP3zw/7mo3kRHFp5MEDhqAdwy1fTGkHAwnkGOVsgpvQhL8B5n1qlb01jV3n/bI0ZfZp5lWA1k4w==",
-      "dependencies": {
-        "minipass": "^7.0.4"
-      },
-      "engines": {
-        "node": ">=18.0.0"
-      }
-    },
-    "node_modules/@types/debug": {
-      "version": "4.1.13",
-      "resolved": "https://registry.npmjs.org/@types/debug/-/debug-4.1.13.tgz",
-      "integrity": "sha512-KSVgmQmzMwPlmtljOomayoR89W4FynCAi3E8PPs7vmDVPe84hT+vGPKkJfThkmXs0x0jAaa9U8uW8bbfyS2fWw==",
-      "dependencies": {
-        "@types/ms": "*"
-      }
-    },
-    "node_modules/@types/ms": {
-      "version": "2.1.0",
-      "resolved": "https://registry.npmjs.org/@types/ms/-/ms-2.1.0.tgz",
-      "integrity": "sha512-GsCCIZDE/p3i96vtEqx+7dBUGXrc7zeSK3wwPHIaRThS+9OhWIXRqzs4d6k1SVU8g91DrNRWxWUGhp5KXQb2VA=="
-    },
-    "node_modules/@types/node": {
-      "version": "25.9.1",
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-      "dependencies": {
-        "undici-types": ">=7.24.0 <7.24.7"
-      }
-    },
-    "node_modules/@types/validator": {
-      "version": "13.15.10",
-      "resolved": "https://registry.npmjs.org/@types/validator/-/validator-13.15.10.tgz",
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-      "funding": [
-        {
-          "type": "github",
-          "url": "https://github.com/sponsors/feross"
-        },
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-          "type": "patreon",
-          "url": "https://www.patreon.com/feross"
-        },
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-        "debug": "^4.4.3",
-        "http-errors": "^2.0.0",
-        "iconv-lite": "^0.7.0",
-        "on-finished": "^2.4.1",
-        "qs": "^6.14.1",
-        "raw-body": "^3.0.1",
-        "type-is": "^2.0.1"
-      },
-      "engines": {
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-      },
-      "funding": {
-        "type": "opencollective",
-        "url": "https://opencollective.com/express"
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-      "integrity": "sha512-YgvUTfwqyc7UXVMrB+SImsVYSmTS8X/tSrtdNZMImM+n7+QTriRXyXim0mBrTXNeqzVF0KWGgHPeiyViFFrNDw==",
-      "engines": {
-        "node": ">=18"
-      }
-    }
-  }
-}
diff --git a/backend/package.json b/backend/package.json
index f8b0f52..8e28745 100644
--- a/backend/package.json
+++ b/backend/package.json
@@ -1,25 +1,31 @@
 {
-  "name": "backend",
-  "version": "1.0.0",
-  "description": "",
-  "main": "index.js",
+  "name": "web-cad-backend",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "dev": "tsx watch src/index.ts",
+    "build": "tsc",
+    "postbuild": "cp src/database/schema.sql dist/database/schema.sql",
+    "start": "node dist/index.js",
+    "test": "vitest run"
   },
-  "keywords": [],
-  "author": "",
-  "license": "ISC",
   "dependencies": {
-    "bcryptjs": "^3.0.3",
-    "cors": "^2.8.6",
-    "dxf-parser": "^1.1.2",
-    "express": "^5.2.1",
-    "jsonwebtoken": "^9.0.3",
-    "multer": "^2.1.1",
-    "passport": "^0.7.0",
-    "passport-jwt": "^4.0.1",
-    "passport-local": "^1.0.0",
-    "pg": "^8.21.0",
-    "sequelize": "^6.37.8"
+    "@fastify/cors": "^9.0.0",
+    "@fastify/static": "^7.0.0",
+    "@fastify/websocket": "^10.0.0",
+    "bcrypt": "^6.0.0",
+    "better-sqlite3": "^11.0.0",
+    "fastify": "^4.28.0",
+    "y-leveldb": "^0.2.0",
+    "yjs": "^13.6.0"
+  },
+  "devDependencies": {
+    "@types/bcrypt": "^6.0.0",
+    "@types/better-sqlite3": "^7.6.0",
+    "@types/node": "^20.14.0",
+    "tsx": "^4.16.0",
+    "typescript": "^5.5.0",
+    "vitest": "^2.0.0"
   }
-}
\ No newline at end of file
+}
diff --git a/backend/plugins/dimension-tool/plugin.json b/backend/plugins/dimension-tool/plugin.json
deleted file mode 100644
index d18f32b..0000000
--- a/backend/plugins/dimension-tool/plugin.json
+++ /dev/null
@@ -1,6 +0,0 @@
-{
-  "name": "Dimension Tool",
-  "version": "1.0.0",
-  "description": "Fügt ein Bemaßungswerkzeug für horizontale und vertikale Messungen hinzu.",
-  "author": "Agent Zero"
-}
diff --git a/backend/public/assets/index-Bdiu6cTh.js b/backend/public/assets/index-Bdiu6cTh.js
deleted file mode 100644
index c56af1f..0000000
--- a/backend/public/assets/index-Bdiu6cTh.js
+++ /dev/null
@@ -1,455 +0,0 @@
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fe(),e===null&&Sd(t.stateNode.containerInfo),Ic(t),null;case 10:return qi(t.type),Ic(t),null;case 19:if(oe(oo),r=t.memoizedState,r===null)return Ic(t),null;if(a=(t.flags&128)!=0,o=r.rendering,o===null)if(a)Fc(r,!1);else{if(Wl!==0||e!==null&&e.flags&128)for(e=t.child;e!==null;){if(o=so(e),o!==null){for(t.flags|=128,Fc(r,!1),e=o.updateQueue,t.updateQueue=e,Pc(t,e),t.subtreeFlags=0,e=n,n=t.child;n!==null;)fi(n,e),n=n.sibling;return I(oo,oo.current&1|2),V&&Di(t,r.treeForkCount),t.child}e=e.sibling}r.tail!==null&&De()>tu&&(t.flags|=128,a=!0,Fc(r,!1),t.lanes=4194304)}else{if(!a)if(e=so(o),e!==null){if(t.flags|=128,a=!0,e=e.updateQueue,t.updateQueue=e,Pc(t,e),Fc(r,!0),r.tail===null&&r.tailMode===`hidden`&&!o.alternate&&!V)return Ic(t),null}else 2*De()-r.renderingStartTime>tu&&n!==536870912&&(t.flags|=128,a=!0,Fc(r,!1),t.lanes=4194304);r.isBackwards?(o.sibling=t.child,t.child=o):(e=r.last,e===null?t.child=o:e.sibling=o,r.last=o)}return 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n(e,t){this.x=e,this.y=t}n.prototype={type:`point`,constructor:n,add:function(e){return new n(this.x+e.x,this.y+e.y)},addEquals:function(e){return this.x+=e.x,this.y+=e.y,this},scalarAdd:function(e){return new n(this.x+e,this.y+e)},scalarAddEquals:function(e){return this.x+=e,this.y+=e,this},subtract:function(e){return new n(this.x-e.x,this.y-e.y)},subtractEquals:function(e){return this.x-=e.x,this.y-=e.y,this},scalarSubtract:function(e){return new n(this.x-e,this.y-e)},scalarSubtractEquals:function(e){return this.x-=e,this.y-=e,this},multiply:function(e){return new n(this.x*e,this.y*e)},multiplyEquals:function(e){return this.x*=e,this.y*=e,this},divide:function(e){return new n(this.x/e,this.y/e)},divideEquals:function(e){return this.x/=e,this.y/=e,this},eq:function(e){return this.x===e.x&&this.y===e.y},lt:function(e){return this.x<e.x&&this.y<e.y},lte:function(e){return this.x<=e.x&&this.y<=e.y},gt:function(e){return this.x>e.x&&this.y>e.y},gte:function(e){return this.x>=e.x&&this.y>=e.y},lerp:function(e,t){return t===void 0&&(t=.5),t=Math.max(Math.min(1,t),0),new n(this.x+(e.x-this.x)*t,this.y+(e.y-this.y)*t)},distanceFrom:function(e){var t=this.x-e.x,n=this.y-e.y;return Math.sqrt(t*t+n*n)},midPointFrom:function(e){return this.lerp(e)},min:function(e){return new n(Math.min(this.x,e.x),Math.min(this.y,e.y))},max:function(e){return new n(Math.max(this.x,e.x),Math.max(this.y,e.y))},toString:function(){return this.x+`,`+this.y},setXY:function(e,t){return this.x=e,this.y=t,this},setX:function(e){return this.x=e,this},setY:function(e){return this.y=e,this},setFromPoint:function(e){return this.x=e.x,this.y=e.y,this},swap:function(e){var t=this.x,n=this.y;this.x=e.x,this.y=e.y,e.x=t,e.y=n},clone:function(){return new n(this.x,this.y)}}})(e),(function(e){var t=e.fabric||={};if(t.Intersection){t.warn(`fabric.Intersection is already defined`);return}function n(e){this.status=e,this.points=[]}t.Intersection=n,t.Intersection.prototype={constructor:n,appendPoint:function(e){return this.points.push(e),this},appendPoints:function(e){return this.points=this.points.concat(e),this}},t.Intersection.intersectLineLine=function(e,r,i,a){var o,s=(a.x-i.x)*(e.y-i.y)-(a.y-i.y)*(e.x-i.x),c=(r.x-e.x)*(e.y-i.y)-(r.y-e.y)*(e.x-i.x),l=(a.y-i.y)*(r.x-e.x)-(a.x-i.x)*(r.y-e.y);if(l!==0){var u=s/l,d=c/l;0<=u&&u<=1&&0<=d&&d<=1?(o=new n(`Intersection`),o.appendPoint(new t.Point(e.x+u*(r.x-e.x),e.y+u*(r.y-e.y)))):o=new n}else o=s===0||c===0?new n(`Coincident`):new n(`Parallel`);return o},t.Intersection.intersectLinePolygon=function(e,t,r){var i=new n,a=r.length,o,s,c,l;for(l=0;l<a;l++)o=r[l],s=r[(l+1)%a],c=n.intersectLineLine(e,t,o,s),i.appendPoints(c.points);return i.points.length>0&&(i.status=`Intersection`),i},t.Intersection.intersectPolygonPolygon=function(e,t){var r=new n,i=e.length,a;for(a=0;a<i;a++){var o=e[a],s=e[(a+1)%i],c=n.intersectLinePolygon(o,s,t);r.appendPoints(c.points)}return r.points.length>0&&(r.status=`Intersection`),r},t.Intersection.intersectPolygonRectangle=function(e,r,i){var a=r.min(i),o=r.max(i),s=new t.Point(o.x,a.y),c=new t.Point(a.x,o.y),l=n.intersectLinePolygon(a,s,e),u=n.intersectLinePolygon(s,o,e),d=n.intersectLinePolygon(o,c,e),f=n.intersectLinePolygon(c,a,e),p=new n;return p.appendPoints(l.points),p.appendPoints(u.points),p.appendPoints(d.points),p.appendPoints(f.points),p.points.length>0&&(p.status=`Intersection`),p}})(e),(function(e){var t=e.fabric||={};if(t.Color){t.warn(`fabric.Color is already defined.`);return}function n(e){e?this._tryParsingColor(e):this.setSource([0,0,0,1])}t.Color=n,t.Color.prototype={_tryParsingColor:function(e){var t;e in n.colorNameMap&&(e=n.colorNameMap[e]),e===`transparent`&&(t=[255,255,255,0]),t||=n.sourceFromHex(e),t||=n.sourceFromRgb(e),t||=n.sourceFromHsl(e),t||=[0,0,0,1],t&&this.setSource(t)},_rgbToHsl:function(e,n,r){e/=255,n/=255,r/=255;var i,a,o,s=t.util.array.max([e,n,r]),c=t.util.array.min([e,n,r]);if(o=(s+c)/2,s===c)i=a=0;else{var l=s-c;switch(a=o>.5?l/(2-s-c):l/(s+c),s){case e:i=(n-r)/l+(n<r?6:0);break;case n:i=(r-e)/l+2;break;case r:i=(e-n)/l+4;break}i/=6}return[Math.round(i*360),Math.round(a*100),Math.round(o*100)]},getSource:function(){return this._source},setSource:function(e){this._source=e},toRgb:function(){var e=this.getSource();return`rgb(`+e[0]+`,`+e[1]+`,`+e[2]+`)`},toRgba:function(){var e=this.getSource();return`rgba(`+e[0]+`,`+e[1]+`,`+e[2]+`,`+e[3]+`)`},toHsl:function(){var e=this.getSource(),t=this._rgbToHsl(e[0],e[1],e[2]);return`hsl(`+t[0]+`,`+t[1]+`%,`+t[2]+`%)`},toHsla:function(){var e=this.getSource(),t=this._rgbToHsl(e[0],e[1],e[2]);return`hsla(`+t[0]+`,`+t[1]+`%,`+t[2]+`%,`+e[3]+`)`},toHex:function(){var e=this.getSource(),t=e[0].toString(16),n,r;return t=t.length===1?`0`+t:t,n=e[1].toString(16),n=n.length===1?`0`+n:n,r=e[2].toString(16),r=r.length===1?`0`+r:r,t.toUpperCase()+n.toUpperCase()+r.toUpperCase()},toHexa:function(){var e=this.getSource(),t=Math.round(e[3]*255);return t=t.toString(16),t=t.length===1?`0`+t:t,this.toHex()+t.toUpperCase()},getAlpha:function(){return this.getSource()[3]},setAlpha:function(e){var t=this.getSource();return t[3]=e,this.setSource(t),this},toGrayscale:function(){var e=this.getSource(),t=parseInt((e[0]*.3+e[1]*.59+e[2]*.11).toFixed(0),10),n=e[3];return this.setSource([t,t,t,n]),this},toBlackWhite:function(e){var t=this.getSource(),n=(t[0]*.3+t[1]*.59+t[2]*.11).toFixed(0),r=t[3];return e||=127,n=Number(n)<Number(e)?0:255,this.setSource([n,n,n,r]),this},overlayWith:function(e){e instanceof n||(e=new n(e));var t=[],r=this.getAlpha(),i=.5,a=this.getSource(),o=e.getSource(),s;for(s=0;s<3;s++)t.push(Math.round(a[s]*(1-i)+o[s]*i));return t[3]=r,this.setSource(t),this}},t.Color.reRGBa=/^rgba?\(\s*(\d{1,3}(?:\.\d+)?\%?)\s*,\s*(\d{1,3}(?:\.\d+)?\%?)\s*,\s*(\d{1,3}(?:\.\d+)?\%?)\s*(?:\s*,\s*((?:\d*\.?\d+)?)\s*)?\)$/i,t.Color.reHSLa=/^hsla?\(\s*(\d{1,3})\s*,\s*(\d{1,3}\%)\s*,\s*(\d{1,3}\%)\s*(?:\s*,\s*(\d+(?:\.\d+)?)\s*)?\)$/i,t.Color.reHex=/^#?([0-9a-f]{8}|[0-9a-f]{6}|[0-9a-f]{4}|[0-9a-f]{3})$/i,t.Color.colorNameMap={aliceblue:`#F0F8FF`,antiquewhite:`#FAEBD7`,aqua:`#00FFFF`,aquamarine:`#7FFFD4`,azure:`#F0FFFF`,beige:`#F5F5DC`,bisque:`#FFE4C4`,black:`#000000`,blanchedalmond:`#FFEBCD`,blue:`#0000FF`,blueviolet:`#8A2BE2`,brown:`#A52A2A`,burlywood:`#DEB887`,cadetblue:`#5F9EA0`,chartreuse:`#7FFF00`,chocolate:`#D2691E`,coral:`#FF7F50`,cornflowerblue:`#6495ED`,cornsilk:`#FFF8DC`,crimson:`#DC143C`,cyan:`#00FFFF`,darkblue:`#00008B`,darkcyan:`#008B8B`,darkgoldenrod:`#B8860B`,darkgray:`#A9A9A9`,darkgrey:`#A9A9A9`,darkgreen:`#006400`,darkkhaki:`#BDB76B`,darkmagenta:`#8B008B`,darkolivegreen:`#556B2F`,darkorange:`#FF8C00`,darkorchid:`#9932CC`,darkred:`#8B0000`,darksalmon:`#E9967A`,darkseagreen:`#8FBC8F`,darkslateblue:`#483D8B`,darkslategray:`#2F4F4F`,darkslategrey:`#2F4F4F`,darkturquoise:`#00CED1`,darkviolet:`#9400D3`,deeppink:`#FF1493`,deepskyblue:`#00BFFF`,dimgray:`#696969`,dimgrey:`#696969`,dodgerblue:`#1E90FF`,firebrick:`#B22222`,floralwhite:`#FFFAF0`,forestgreen:`#228B22`,fuchsia:`#FF00FF`,gainsboro:`#DCDCDC`,ghostwhite:`#F8F8FF`,gold:`#FFD700`,goldenrod:`#DAA520`,gray:`#808080`,grey:`#808080`,green:`#008000`,greenyellow:`#ADFF2F`,honeydew:`#F0FFF0`,hotpink:`#FF69B4`,indianred:`#CD5C5C`,indigo:`#4B0082`,ivory:`#FFFFF0`,khaki:`#F0E68C`,lavender:`#E6E6FA`,lavenderblush:`#FFF0F5`,lawngreen:`#7CFC00`,lemonchiffon:`#FFFACD`,lightblue:`#ADD8E6`,lightcoral:`#F08080`,lightcyan:`#E0FFFF`,lightgoldenrodyellow:`#FAFAD2`,lightgray:`#D3D3D3`,lightgrey:`#D3D3D3`,lightgreen:`#90EE90`,lightpink:`#FFB6C1`,lightsalmon:`#FFA07A`,lightseagreen:`#20B2AA`,lightskyblue:`#87CEFA`,lightslategray:`#778899`,lightslategrey:`#778899`,lightsteelblue:`#B0C4DE`,lightyellow:`#FFFFE0`,lime:`#00FF00`,limegreen:`#32CD32`,linen:`#FAF0E6`,magenta:`#FF00FF`,maroon:`#800000`,mediumaquamarine:`#66CDAA`,mediumblue:`#0000CD`,mediumorchid:`#BA55D3`,mediumpurple:`#9370DB`,mediumseagreen:`#3CB371`,mediumslateblue:`#7B68EE`,mediumspringgreen:`#00FA9A`,mediumturquoise:`#48D1CC`,mediumvioletred:`#C71585`,midnightblue:`#191970`,mintcream:`#F5FFFA`,mistyrose:`#FFE4E1`,moccasin:`#FFE4B5`,navajowhite:`#FFDEAD`,navy:`#000080`,oldlace:`#FDF5E6`,olive:`#808000`,olivedrab:`#6B8E23`,orange:`#FFA500`,orangered:`#FF4500`,orchid:`#DA70D6`,palegoldenrod:`#EEE8AA`,palegreen:`#98FB98`,paleturquoise:`#AFEEEE`,palevioletred:`#DB7093`,papayawhip:`#FFEFD5`,peachpuff:`#FFDAB9`,peru:`#CD853F`,pink:`#FFC0CB`,plum:`#DDA0DD`,powderblue:`#B0E0E6`,purple:`#800080`,rebeccapurple:`#663399`,red:`#FF0000`,rosybrown:`#BC8F8F`,royalblue:`#4169E1`,saddlebrown:`#8B4513`,salmon:`#FA8072`,sandybrown:`#F4A460`,seagreen:`#2E8B57`,seashell:`#FFF5EE`,sienna:`#A0522D`,silver:`#C0C0C0`,skyblue:`#87CEEB`,slateblue:`#6A5ACD`,slategray:`#708090`,slategrey:`#708090`,snow:`#FFFAFA`,springgreen:`#00FF7F`,steelblue:`#4682B4`,tan:`#D2B48C`,teal:`#008080`,thistle:`#D8BFD8`,tomato:`#FF6347`,turquoise:`#40E0D0`,violet:`#EE82EE`,wheat:`#F5DEB3`,white:`#FFFFFF`,whitesmoke:`#F5F5F5`,yellow:`#FFFF00`,yellowgreen:`#9ACD32`};function r(e,t,n){return n<0&&(n+=1),n>1&&--n,n<1/6?e+(t-e)*6*n:n<1/2?t:n<2/3?e+(t-e)*(2/3-n)*6:e}t.Color.fromRgb=function(e){return n.fromSource(n.sourceFromRgb(e))},t.Color.sourceFromRgb=function(e){var t=e.match(n.reRGBa);if(t){var r=parseInt(t[1],10)/(/%$/.test(t[1])?100:1)*(/%$/.test(t[1])?255:1),i=parseInt(t[2],10)/(/%$/.test(t[2])?100:1)*(/%$/.test(t[2])?255:1),a=parseInt(t[3],10)/(/%$/.test(t[3])?100:1)*(/%$/.test(t[3])?255:1);return[parseInt(r,10),parseInt(i,10),parseInt(a,10),t[4]?parseFloat(t[4]):1]}},t.Color.fromRgba=n.fromRgb,t.Color.fromHsl=function(e){return n.fromSource(n.sourceFromHsl(e))},t.Color.sourceFromHsl=function(e){var t=e.match(n.reHSLa);if(t){var i=(parseFloat(t[1])%360+360)%360/360,a=parseFloat(t[2])/(/%$/.test(t[2])?100:1),o=parseFloat(t[3])/(/%$/.test(t[3])?100:1),s,c,l;if(a===0)s=c=l=o;else{var u=o<=.5?o*(a+1):o+a-o*a,d=o*2-u;s=r(d,u,i+1/3),c=r(d,u,i),l=r(d,u,i-1/3)}return[Math.round(s*255),Math.round(c*255),Math.round(l*255),t[4]?parseFloat(t[4]):1]}},t.Color.fromHsla=n.fromHsl,t.Color.fromHex=function(e){return n.fromSource(n.sourceFromHex(e))},t.Color.sourceFromHex=function(e){if(e.match(n.reHex)){var t=e.slice(e.indexOf(`#`)+1),r=t.length===3||t.length===4,i=t.length===8||t.length===4,a=r?t.charAt(0)+t.charAt(0):t.substring(0,2),o=r?t.charAt(1)+t.charAt(1):t.substring(2,4),s=r?t.charAt(2)+t.charAt(2):t.substring(4,6),c=i?r?t.charAt(3)+t.charAt(3):t.substring(6,8):`FF`;return[parseInt(a,16),parseInt(o,16),parseInt(s,16),parseFloat((parseInt(c,16)/255).toFixed(2))]}},t.Color.fromSource=function(e){var t=new n;return t.setSource(e),t}})(e),(function(e){var t=e.fabric||={},n=[`e`,`se`,`s`,`sw`,`w`,`nw`,`n`,`ne`,`e`],r=[`ns`,`nesw`,`ew`,`nwse`],i={},a=`left`,o=`top`,s=`right`,c=`bottom`,l=`center`,u={top:c,bottom:o,left:s,right:a,center:l},d=t.util.radiansToDegrees,f=Math.sign||function(e){return(e>0)-(e<0)||+e};function p(e,t){var n=e.angle+d(Math.atan2(t.y,t.x))+360;return Math.round(n%360/45)}function m(e,n){var r=n.transform.target,i=r.canvas,a=t.util.object.clone(n);a.target=r,i&&i.fire(`object:`+e,a),r.fire(e,n)}function h(e,t){var n=t.canvas,r=e[n.uniScaleKey];return n.uniformScaling&&!r||!n.uniformScaling&&r}function g(e){return e.originX===l&&e.originY===l}function _(e,t,n){var r=e.lockScalingX,i=e.lockScalingY;return!!(r&&i||!t&&(r||i)&&n||r&&t===`x`||i&&t===`y`)}function v(e,t,r){var i=`not-allowed`,a=h(e,r),o=``;return t.x!==0&&t.y===0?o=`x`:t.x===0&&t.y!==0&&(o=`y`),_(r,o,a)?i:n[p(r,t)]+`-resize`}function y(e,t,n){return t.x!==0&&n.lockSkewingY||t.y!==0&&n.lockSkewingX?`not-allowed`:r[p(n,t)%4]+`-resize`}function b(e,t,n){return e[n.canvas.altActionKey]?i.skewCursorStyleHandler(e,t,n):i.scaleCursorStyleHandler(e,t,n)}function x(e,t,n){var r=e[n.canvas.altActionKey];if(t.x===0)return r?`skewX`:`scaleY`;if(t.y===0)return r?`skewY`:`scaleX`}function S(e,t,n){return n.lockRotation?`not-allowed`:t.cursorStyle}function C(e,t,n,r){return{e,transform:t,pointer:{x:n,y:r}}}function w(e){return function(t,n,r,i){var a=n.target,o=a.getCenterPoint(),s=a.translateToOriginPoint(o,n.originX,n.originY),c=e(t,n,r,i);return a.setPositionByOrigin(s,n.originX,n.originY),c}}function T(e,t){return function(n,r,i,a){var o=t(n,r,i,a);return o&&m(e,C(n,r,i,a)),o}}function E(e,n,r,i,a){var o=e.target,s=o.controls[e.corner],c=o.canvas.getZoom(),l=o.padding/c,u=o.toLocalPoint(new t.Point(i,a),n,r);return u.x>=l&&(u.x-=l),u.x<=-l&&(u.x+=l),u.y>=l&&(u.y-=l),u.y<=l&&(u.y+=l),u.x-=s.offsetX,u.y-=s.offsetY,u}function D(e){return e.flipX!==e.flipY}function O(e,t,n,r,i){if(e[t]!==0){var a=i/e._getTransformedDimensions()[r]*e[n];e.set(n,a)}}function k(e,t,n,r){var i=t.target,l=i._getTransformedDimensions(0,i.skewY),u=E(t,t.originX,t.originY,n,r),f=Math.abs(u.x*2)-l.x,p=i.skewX,m;f<2?m=0:(m=d(Math.atan2(f/i.scaleX,l.y/i.scaleY)),t.originX===a&&t.originY===c&&(m=-m),t.originX===s&&t.originY===o&&(m=-m),D(i)&&(m=-m));var h=p!==m;if(h){var g=i._getTransformedDimensions().y;i.set(`skewX`,m),O(i,`skewY`,`scaleY`,`y`,g)}return h}function A(e,t,n,r){var i=t.target,l=i._getTransformedDimensions(i.skewX,0),u=E(t,t.originX,t.originY,n,r),f=Math.abs(u.y*2)-l.y,p=i.skewY,m;f<2?m=0:(m=d(Math.atan2(f/i.scaleY,l.x/i.scaleX)),t.originX===a&&t.originY===c&&(m=-m),t.originX===s&&t.originY===o&&(m=-m),D(i)&&(m=-m));var h=p!==m;if(h){var g=i._getTransformedDimensions().x;i.set(`skewY`,m),O(i,`skewX`,`scaleX`,`x`,g)}return h}function j(e,t,n,r){var i=t.target,c=i.skewX,u,d=t.originY;return i.lockSkewingX?!1:(c===0?u=E(t,l,l,n,r).x>0?a:s:(c>0&&(u=d===o?a:s),c<0&&(u=d===o?s:a),D(i)&&(u=u===a?s:a)),t.originX=u,T(`skewing`,w(k))(e,t,n,r))}function M(e,t,n,r){var i=t.target,s=i.skewY,u,d=t.originX;return i.lockSkewingY?!1:(s===0?u=E(t,l,l,n,r).y>0?o:c:(s>0&&(u=d===a?o:c),s<0&&(u=d===a?c:o),D(i)&&(u=u===o?c:o)),t.originY=u,T(`skewing`,w(A))(e,t,n,r))}function N(e,t,n,r){var i=t,a=i.target,o=a.translateToOriginPoint(a.getCenterPoint(),i.originX,i.originY);if(a.lockRotation)return!1;var s=Math.atan2(i.ey-o.y,i.ex-o.x),c=d(Math.atan2(r-o.y,n-o.x)-s+i.theta),l=!0;if(a.snapAngle>0){var u=a.snapAngle,f=a.snapThreshold||u,p=Math.ceil(c/u)*u,m=Math.floor(c/u)*u;Math.abs(c-m)<f?c=m:Math.abs(c-p)<f&&(c=p)}return c<0&&(c=360+c),c%=360,l=a.angle!==c,a.angle=c,l}function ee(e,t,n,r,i){i||={};var a=t.target,o=a.lockScalingX,s=a.lockScalingY,c=i.by,l,d,p,m,v=h(e,a),y=_(a,c,v),b,x,S=t.gestureScale;if(y)return!1;if(S)d=t.scaleX*S,p=t.scaleY*S;else{if(l=E(t,t.originX,t.originY,n,r),b=c===`y`?1:f(l.x),x=c===`x`?1:f(l.y),t.signX||=b,t.signY||=x,a.lockScalingFlip&&(t.signX!==b||t.signY!==x))return!1;if(m=a._getTransformedDimensions(),v&&!c){var C=Math.abs(l.x)+Math.abs(l.y),w=t.original,T=C/(Math.abs(m.x*w.scaleX/a.scaleX)+Math.abs(m.y*w.scaleY/a.scaleY));d=w.scaleX*T,p=w.scaleY*T}else d=Math.abs(l.x*a.scaleX/m.x),p=Math.abs(l.y*a.scaleY/m.y);g(t)&&(d*=2,p*=2),t.signX!==b&&c!==`y`&&(t.originX=u[t.originX],d*=-1,t.signX=b),t.signY!==x&&c!==`x`&&(t.originY=u[t.originY],p*=-1,t.signY=x)}var D=a.scaleX,O=a.scaleY;return c?(c===`x`&&a.set(`scaleX`,d),c===`y`&&a.set(`scaleY`,p)):(!o&&a.set(`scaleX`,d),!s&&a.set(`scaleY`,p)),D!==a.scaleX||O!==a.scaleY}function te(e,t,n,r){return ee(e,t,n,r)}function P(e,t,n,r){return ee(e,t,n,r,{by:`x`})}function F(e,t,n,r){return ee(e,t,n,r,{by:`y`})}function ne(e,t,n,r){return e[t.target.canvas.altActionKey]?i.skewHandlerX(e,t,n,r):i.scalingY(e,t,n,r)}function re(e,t,n,r){return e[t.target.canvas.altActionKey]?i.skewHandlerY(e,t,n,r):i.scalingX(e,t,n,r)}function ie(e,t,n,r){var i=t.target,a=E(t,t.originX,t.originY,n,r),o=i.strokeWidth/(i.strokeUniform?i.scaleX:1),s=g(t)?2:1,c=i.width,l=Math.abs(a.x*s/i.scaleX)-o;return i.set(`width`,Math.max(l,0)),c!==l}function ae(e,t,n,r){var i=t.target,a=n-t.offsetX,o=r-t.offsetY,s=!i.get(`lockMovementX`)&&i.left!==a,c=!i.get(`lockMovementY`)&&i.top!==o;return s&&i.set(`left`,a),c&&i.set(`top`,o),(s||c)&&m(`moving`,C(e,t,n,r)),s||c}i.scaleCursorStyleHandler=v,i.skewCursorStyleHandler=y,i.scaleSkewCursorStyleHandler=b,i.rotationWithSnapping=T(`rotating`,w(N)),i.scalingEqually=T(`scaling`,w(te)),i.scalingX=T(`scaling`,w(P)),i.scalingY=T(`scaling`,w(F)),i.scalingYOrSkewingX=ne,i.scalingXOrSkewingY=re,i.changeWidth=T(`resizing`,w(ie)),i.skewHandlerX=j,i.skewHandlerY=M,i.dragHandler=ae,i.scaleOrSkewActionName=x,i.rotationStyleHandler=S,i.fireEvent=m,i.wrapWithFixedAnchor=w,i.wrapWithFireEvent=T,i.getLocalPoint=E,t.controlsUtils=i})(e),(function(e){var t=e.fabric||={},n=t.util.degreesToRadians,r=t.controlsUtils;function i(e,t,n,r,i){r||={};var a=this.sizeX||r.cornerSize||i.cornerSize,o=this.sizeY||r.cornerSize||i.cornerSize,s=r.transparentCorners===void 0?i.transparentCorners:r.transparentCorners,c=s?`stroke`:`fill`,l=!s&&(r.cornerStrokeColor||i.cornerStrokeColor),u=t,d=n,f;e.save(),e.fillStyle=r.cornerColor||i.cornerColor,e.strokeStyle=r.cornerStrokeColor||i.cornerStrokeColor,a>o?(f=a,e.scale(1,o/a),d=n*a/o):o>a?(f=o,e.scale(a/o,1),u=t*o/a):f=a,e.lineWidth=1,e.beginPath(),e.arc(u,d,f/2,0,2*Math.PI,!1),e[c](),l&&e.stroke(),e.restore()}function a(e,t,r,i,a){i||={};var o=this.sizeX||i.cornerSize||a.cornerSize,s=this.sizeY||i.cornerSize||a.cornerSize,c=i.transparentCorners===void 0?a.transparentCorners:i.transparentCorners,l=c?`stroke`:`fill`,u=!c&&(i.cornerStrokeColor||a.cornerStrokeColor),d=o/2,f=s/2;e.save(),e.fillStyle=i.cornerColor||a.cornerColor,e.strokeStyle=i.cornerStrokeColor||a.cornerStrokeColor,e.lineWidth=1,e.translate(t,r),e.rotate(n(a.angle)),e[l+`Rect`](-d,-f,o,s),u&&e.strokeRect(-d,-f,o,s),e.restore()}r.renderCircleControl=i,r.renderSquareControl=a})(e),(function(e){var t=e.fabric||={};function n(e){for(var t in e)this[t]=e[t]}t.Control=n,t.Control.prototype={visible:!0,actionName:`scale`,angle:0,x:0,y:0,offsetX:0,offsetY:0,sizeX:null,sizeY:null,touchSizeX:null,touchSizeY:null,cursorStyle:`crosshair`,withConnection:!1,actionHandler:function(){},mouseDownHandler:function(){},mouseUpHandler:function(){},getActionHandler:function(){return this.actionHandler},getMouseDownHandler:function(){return this.mouseDownHandler},getMouseUpHandler:function(){return this.mouseUpHandler},cursorStyleHandler:function(e,t){return t.cursorStyle},getActionName:function(e,t){return t.actionName},getVisibility:function(e,t){var n=e._controlsVisibility;return n&&n[t]!==void 0?n[t]:this.visible},setVisibility:function(e){this.visible=e},positionHandler:function(e,n){return t.util.transformPoint({x:this.x*e.x+this.offsetX,y:this.y*e.y+this.offsetY},n)},calcCornerCoords:function(e,n,r,i,a){var o,s,c,l,u=a?this.touchSizeX:this.sizeX,d=a?this.touchSizeY:this.sizeY;if(u&&d&&u!==d){var f=Math.atan2(d,u),p=Math.sqrt(u*u+d*d)/2,m=f-t.util.degreesToRadians(e),h=Math.PI/2-f-t.util.degreesToRadians(e);o=p*t.util.cos(m),s=p*t.util.sin(m),c=p*t.util.cos(h),l=p*t.util.sin(h)}else{p=(u&&d?u:n)*.7071067812;var m=t.util.degreesToRadians(45-e);o=c=p*t.util.cos(m),s=l=p*t.util.sin(m)}return{tl:{x:r-l,y:i-c},tr:{x:r+o,y:i-s},bl:{x:r-o,y:i+s},br:{x:r+l,y:i+c}}},render:function(e,n,r,i,a){switch(i||={},i.cornerStyle||a.cornerStyle){case`circle`:t.controlsUtils.renderCircleControl.call(this,e,n,r,i,a);break;default:t.controlsUtils.renderSquareControl.call(this,e,n,r,i,a)}}}})(e),(function(){function e(e,n){var r=e.getAttribute(`style`),i=e.getAttribute(`offset`)||0,a,o,s,c;if(i=parseFloat(i)/(/%$/.test(i)?100:1),i=i<0?0:i>1?1:i,r){var l=r.split(/\s*;\s*/);for(l[l.length-1]===``&&l.pop(),c=l.length;c--;){var u=l[c].split(/\s*:\s*/),d=u[0].trim(),f=u[1].trim();d===`stop-color`?a=f:d===`stop-opacity`&&(s=f)}}return a||=e.getAttribute(`stop-color`)||`rgb(0,0,0)`,s||=e.getAttribute(`stop-opacity`),a=new t.Color(a),o=a.getAlpha(),s=isNaN(parseFloat(s))?1:parseFloat(s),s*=o*n,{offset:i,color:a.toRgb(),opacity:s}}function n(e){return{x1:e.getAttribute(`x1`)||0,y1:e.getAttribute(`y1`)||0,x2:e.getAttribute(`x2`)||`100%`,y2:e.getAttribute(`y2`)||0}}function r(e){return{x1:e.getAttribute(`fx`)||e.getAttribute(`cx`)||`50%`,y1:e.getAttribute(`fy`)||e.getAttribute(`cy`)||`50%`,r1:0,x2:e.getAttribute(`cx`)||`50%`,y2:e.getAttribute(`cy`)||`50%`,r2:e.getAttribute(`r`)||`50%`}}var i=t.util.object.clone;t.Gradient=t.util.createClass({offsetX:0,offsetY:0,gradientTransform:null,gradientUnits:`pixels`,type:`linear`,initialize:function(e){e||={},e.coords||={};var n,r=this;Object.keys(e).forEach(function(t){r[t]=e[t]}),this.id?this.id+=`_`+ t.Object.__uid++:this.id=t.Object.__uid++,n={x1:e.coords.x1||0,y1:e.coords.y1||0,x2:e.coords.x2||0,y2:e.coords.y2||0},this.type===`radial`&&(n.r1=e.coords.r1||0,n.r2=e.coords.r2||0),this.coords=n,this.colorStops=e.colorStops.slice()},addColorStop:function(e){for(var n in e){var r=new t.Color(e[n]);this.colorStops.push({offset:parseFloat(n),color:r.toRgb(),opacity:r.getAlpha()})}return this},toObject:function(e){var n={type:this.type,coords:this.coords,colorStops:this.colorStops,offsetX:this.offsetX,offsetY:this.offsetY,gradientUnits:this.gradientUnits,gradientTransform:this.gradientTransform?this.gradientTransform.concat():this.gradientTransform};return t.util.populateWithProperties(this,n,e),n},toSVG:function(e,n){var r=i(this.coords,!0),a,o,n=n||{},s,c,l=i(this.colorStops,!0),u=r.r1>r.r2,d=this.gradientTransform?this.gradientTransform.concat():t.iMatrix.concat(),f=-this.offsetX,p=-this.offsetY,m=!!n.additionalTransform,h=this.gradientUnits===`pixels`?`userSpaceOnUse`:`objectBoundingBox`;if(l.sort(function(e,t){return e.offset-t.offset}),h===`objectBoundingBox`?(f/=e.width,p/=e.height):(f+=e.width/2,p+=e.height/2),e.type===`path`&&this.gradientUnits!==`percentage`&&(f-=e.pathOffset.x,p-=e.pathOffset.y),d[4]-=f,d[5]-=p,c=`id="SVGID_`+this.id+`" gradientUnits="`+h+`"`,c+=` gradientTransform="`+(m?n.additionalTransform+` `:``)+t.util.matrixToSVG(d)+`" `,this.type===`linear`?s=[`<linearGradient `,c,` x1="`,r.x1,`" y1="`,r.y1,`" x2="`,r.x2,`" y2="`,r.y2,`">
-`]:this.type===`radial`&&(s=[`<radialGradient `,c,` cx="`,u?r.x1:r.x2,`" cy="`,u?r.y1:r.y2,`" r="`,u?r.r1:r.r2,`" fx="`,u?r.x2:r.x1,`" fy="`,u?r.y2:r.y1,`">
-`]),this.type===`radial`){if(u)for(l=l.concat(),l.reverse(),a=0,o=l.length;a<o;a++)l[a].offset=1-l[a].offset;var g=Math.min(r.r1,r.r2);if(g>0){var _=g/Math.max(r.r1,r.r2);for(a=0,o=l.length;a<o;a++)l[a].offset+=_*(1-l[a].offset)}}for(a=0,o=l.length;a<o;a++){var v=l[a];s.push(`<stop `,`offset="`,v.offset*100+`%`,`" style="stop-color:`,v.color,v.opacity===void 0?`;`:`;stop-opacity: `+v.opacity,`"/>
-`)}return s.push(this.type===`linear`?`</linearGradient>
-`:`</radialGradient>
-`),s.join(``)},toLive:function(e){var n,r=t.util.object.clone(this.coords),i,a;if(this.type){for(this.type===`linear`?n=e.createLinearGradient(r.x1,r.y1,r.x2,r.y2):this.type===`radial`&&(n=e.createRadialGradient(r.x1,r.y1,r.r1,r.x2,r.y2,r.r2)),i=0,a=this.colorStops.length;i<a;i++){var o=this.colorStops[i].color,s=this.colorStops[i].opacity,c=this.colorStops[i].offset;s!==void 0&&(o=new t.Color(o).setAlpha(s).toRgba()),n.addColorStop(c,o)}return n}}}),t.util.object.extend(t.Gradient,{fromElement:function(i,o,s,c){var l=parseFloat(s)/(/%$/.test(s)?100:1);l=l<0?0:l>1?1:l,isNaN(l)&&(l=1);var u=i.getElementsByTagName(`stop`),d,f=i.getAttribute(`gradientUnits`)===`userSpaceOnUse`?`pixels`:`percentage`,p=i.getAttribute(`gradientTransform`)||``,m=[],h,g,_=0,v=0,y;for(i.nodeName===`linearGradient`||i.nodeName===`LINEARGRADIENT`?(d=`linear`,h=n(i)):(d=`radial`,h=r(i)),g=u.length;g--;)m.push(e(u[g],l));return y=t.parseTransformAttribute(p),a(o,h,c,f),f===`pixels`&&(_=-o.left,v=-o.top),new t.Gradient({id:i.getAttribute(`id`),type:d,coords:h,colorStops:m,gradientUnits:f,gradientTransform:y,offsetX:_,offsetY:v})}});function a(e,t,n,r){var i,a;Object.keys(t).forEach(function(e){i=t[e],i===`Infinity`?a=1:i===`-Infinity`?a=0:(a=parseFloat(t[e],10),typeof i==`string`&&/^(\d+\.\d+)%|(\d+)%$/.test(i)&&(a*=.01,r===`pixels`&&((e===`x1`||e===`x2`||e===`r2`)&&(a*=n.viewBoxWidth||n.width),(e===`y1`||e===`y2`)&&(a*=n.viewBoxHeight||n.height)))),t[e]=a})}})(),(function(){var e=t.util.toFixed;t.Pattern=t.util.createClass({repeat:`repeat`,offsetX:0,offsetY:0,crossOrigin:``,patternTransform:null,initialize:function(e,n){if(e||={},this.id=t.Object.__uid++,this.setOptions(e),!e.source||e.source&&typeof e.source!=`string`){n&&n(this);return}else{var r=this;this.source=t.util.createImage(),t.util.loadImage(e.source,function(e,t){r.source=e,n&&n(r,t)},null,this.crossOrigin)}},toObject:function(n){var r=t.Object.NUM_FRACTION_DIGITS,i,a;return typeof this.source.src==`string`?i=this.source.src:typeof this.source==`object`&&this.source.toDataURL&&(i=this.source.toDataURL()),a={type:`pattern`,source:i,repeat:this.repeat,crossOrigin:this.crossOrigin,offsetX:e(this.offsetX,r),offsetY:e(this.offsetY,r),patternTransform:this.patternTransform?this.patternTransform.concat():null},t.util.populateWithProperties(this,a,n),a},toSVG:function(e){var t=typeof this.source==`function`?this.source():this.source,n=t.width/e.width,r=t.height/e.height,i=this.offsetX/e.width,a=this.offsetY/e.height,o=``;return(this.repeat===`repeat-x`||this.repeat===`no-repeat`)&&(r=1,a&&(r+=Math.abs(a))),(this.repeat===`repeat-y`||this.repeat===`no-repeat`)&&(n=1,i&&(n+=Math.abs(i))),t.src?o=t.src:t.toDataURL&&(o=t.toDataURL()),`<pattern id="SVGID_`+this.id+`" x="`+i+`" y="`+a+`" width="`+n+`" height="`+r+`">
-<image x="0" y="0" width="`+t.width+`" height="`+t.height+`" xlink:href="`+o+`"></image>
-</pattern>
-`},setOptions:function(e){for(var t in e)this[t]=e[t]},toLive:function(e){var t=this.source;return!t||t.src!==void 0&&(!t.complete||t.naturalWidth===0||t.naturalHeight===0)?``:e.createPattern(t,this.repeat)}})})(),(function(e){var t=e.fabric||={},n=t.util.toFixed;if(t.Shadow){t.warn(`fabric.Shadow is already defined.`);return}t.Shadow=t.util.createClass({color:`rgb(0,0,0)`,blur:0,offsetX:0,offsetY:0,affectStroke:!1,includeDefaultValues:!0,nonScaling:!1,initialize:function(e){for(var n in typeof e==`string`&&(e=this._parseShadow(e)),e)this[n]=e[n];this.id=t.Object.__uid++},_parseShadow:function(e){var n=e.trim(),r=t.Shadow.reOffsetsAndBlur.exec(n)||[];return{color:(n.replace(t.Shadow.reOffsetsAndBlur,``)||`rgb(0,0,0)`).trim(),offsetX:parseFloat(r[1],10)||0,offsetY:parseFloat(r[2],10)||0,blur:parseFloat(r[3],10)||0}},toString:function(){return[this.offsetX,this.offsetY,this.blur,this.color].join(`px `)},toSVG:function(e){var r=40,i=40,a=t.Object.NUM_FRACTION_DIGITS,o=t.util.rotateVector({x:this.offsetX,y:this.offsetY},t.util.degreesToRadians(-e.angle)),s=20,c=new t.Color(this.color);return e.width&&e.height&&(r=n((Math.abs(o.x)+this.blur)/e.width,a)*100+s,i=n((Math.abs(o.y)+this.blur)/e.height,a)*100+s),e.flipX&&(o.x*=-1),e.flipY&&(o.y*=-1),`<filter id="SVGID_`+this.id+`" y="-`+i+`%" height="`+(100+2*i)+`%" x="-`+r+`%" width="`+(100+2*r)+`%" >
-	<feGaussianBlur in="SourceAlpha" stdDeviation="`+n(this.blur?this.blur/2:0,a)+`"></feGaussianBlur>
-	<feOffset dx="`+n(o.x,a)+`" dy="`+n(o.y,a)+`" result="oBlur" ></feOffset>
-	<feFlood flood-color="`+c.toRgb()+`" flood-opacity="`+c.getAlpha()+`"/>
-	<feComposite in2="oBlur" operator="in" />
-	<feMerge>
-		<feMergeNode></feMergeNode>
-		<feMergeNode in="SourceGraphic"></feMergeNode>
-	</feMerge>
-</filter>
-`},toObject:function(){if(this.includeDefaultValues)return{color:this.color,blur:this.blur,offsetX:this.offsetX,offsetY:this.offsetY,affectStroke:this.affectStroke,nonScaling:this.nonScaling};var e={},n=t.Shadow.prototype;return[`color`,`blur`,`offsetX`,`offsetY`,`affectStroke`,`nonScaling`].forEach(function(t){this[t]!==n[t]&&(e[t]=this[t])},this),e}}),t.Shadow.reOffsetsAndBlur=/(?:\s|^)(-?\d+(?:\.\d*)?(?:px)?(?:\s?|$))?(-?\d+(?:\.\d*)?(?:px)?(?:\s?|$))?(\d+(?:\.\d*)?(?:px)?)?(?:\s?|$)(?:$|\s)/})(e),(function(){if(t.StaticCanvas){t.warn(`fabric.StaticCanvas is already defined.`);return}var e=t.util.object.extend,n=t.util.getElementOffset,r=t.util.removeFromArray,i=t.util.toFixed,a=t.util.transformPoint,o=t.util.invertTransform,s=t.util.getNodeCanvas,c=t.util.createCanvasElement,l=Error("Could not initialize `canvas` element");t.StaticCanvas=t.util.createClass(t.CommonMethods,{initialize:function(e,t){t||={},this.renderAndResetBound=this.renderAndReset.bind(this),this.requestRenderAllBound=this.requestRenderAll.bind(this),this._initStatic(e,t)},backgroundColor:``,backgroundImage:null,overlayColor:``,overlayImage:null,includeDefaultValues:!0,stateful:!1,renderOnAddRemove:!0,controlsAboveOverlay:!1,allowTouchScrolling:!1,imageSmoothingEnabled:!0,viewportTransform:t.iMatrix.concat(),backgroundVpt:!0,overlayVpt:!0,enableRetinaScaling:!0,vptCoords:{},skipOffscreen:!0,clipPath:void 0,_initStatic:function(e,t){var n=this.requestRenderAllBound;this._objects=[],this._createLowerCanvas(e),this._initOptions(t),this.interactive||this._initRetinaScaling(),t.overlayImage&&this.setOverlayImage(t.overlayImage,n),t.backgroundImage&&this.setBackgroundImage(t.backgroundImage,n),t.backgroundColor&&this.setBackgroundColor(t.backgroundColor,n),t.overlayColor&&this.setOverlayColor(t.overlayColor,n),this.calcOffset()},_isRetinaScaling:function(){return t.devicePixelRatio>1&&this.enableRetinaScaling},getRetinaScaling:function(){return this._isRetinaScaling()?Math.max(1,t.devicePixelRatio):1},_initRetinaScaling:function(){if(this._isRetinaScaling()){var e=t.devicePixelRatio;this.__initRetinaScaling(e,this.lowerCanvasEl,this.contextContainer),this.upperCanvasEl&&this.__initRetinaScaling(e,this.upperCanvasEl,this.contextTop)}},__initRetinaScaling:function(e,t,n){t.setAttribute(`width`,this.width*e),t.setAttribute(`height`,this.height*e),n.scale(e,e)},calcOffset:function(){return this._offset=n(this.lowerCanvasEl),this},setOverlayImage:function(e,t,n){return this.__setBgOverlayImage(`overlayImage`,e,t,n)},setBackgroundImage:function(e,t,n){return this.__setBgOverlayImage(`backgroundImage`,e,t,n)},setOverlayColor:function(e,t){return this.__setBgOverlayColor(`overlayColor`,e,t)},setBackgroundColor:function(e,t){return this.__setBgOverlayColor(`backgroundColor`,e,t)},__setBgOverlayImage:function(e,n,r,i){return typeof n==`string`?t.util.loadImage(n,function(n,a){if(n){var o=new t.Image(n,i);this[e]=o,o.canvas=this}r&&r(n,a)},this,i&&i.crossOrigin):(i&&n.setOptions(i),this[e]=n,n&&(n.canvas=this),r&&r(n,!1)),this},__setBgOverlayColor:function(e,t,n){return this[e]=t,this._initGradient(t,e),this._initPattern(t,e,n),this},_createCanvasElement:function(){var e=c();if(!e||(e.style||={},e.getContext===void 0))throw l;return e},_initOptions:function(e){var t=this.lowerCanvasEl;this._setOptions(e),this.width=this.width||parseInt(t.width,10)||0,this.height=this.height||parseInt(t.height,10)||0,this.lowerCanvasEl.style&&(t.width=this.width,t.height=this.height,t.style.width=this.width+`px`,t.style.height=this.height+`px`,this.viewportTransform=this.viewportTransform.slice())},_createLowerCanvas:function(e){e&&e.getContext?this.lowerCanvasEl=e:this.lowerCanvasEl=t.util.getById(e)||this._createCanvasElement(),t.util.addClass(this.lowerCanvasEl,`lower-canvas`),this._originalCanvasStyle=this.lowerCanvasEl.style,this.interactive&&this._applyCanvasStyle(this.lowerCanvasEl),this.contextContainer=this.lowerCanvasEl.getContext(`2d`)},getWidth:function(){return this.width},getHeight:function(){return this.height},setWidth:function(e,t){return this.setDimensions({width:e},t)},setHeight:function(e,t){return this.setDimensions({height:e},t)},setDimensions:function(e,t){var n;for(var r in t||={},e)n=e[r],t.cssOnly||(this._setBackstoreDimension(r,e[r]),n+=`px`,this.hasLostContext=!0),t.backstoreOnly||this._setCssDimension(r,n);return this._isCurrentlyDrawing&&this.freeDrawingBrush&&this.freeDrawingBrush._setBrushStyles(this.contextTop),this._initRetinaScaling(),this.calcOffset(),t.cssOnly||this.requestRenderAll(),this},_setBackstoreDimension:function(e,t){return this.lowerCanvasEl[e]=t,this.upperCanvasEl&&(this.upperCanvasEl[e]=t),this.cacheCanvasEl&&(this.cacheCanvasEl[e]=t),this[e]=t,this},_setCssDimension:function(e,t){return this.lowerCanvasEl.style[e]=t,this.upperCanvasEl&&(this.upperCanvasEl.style[e]=t),this.wrapperEl&&(this.wrapperEl.style[e]=t),this},getZoom:function(){return this.viewportTransform[0]},setViewportTransform:function(e){var t=this._activeObject,n=this.backgroundImage,r=this.overlayImage,i,a,o;for(this.viewportTransform=e,a=0,o=this._objects.length;a<o;a++)i=this._objects[a],i.group||i.setCoords(!0);return t&&t.setCoords(),n&&n.setCoords(!0),r&&r.setCoords(!0),this.calcViewportBoundaries(),this.renderOnAddRemove&&this.requestRenderAll(),this},zoomToPoint:function(e,t){var n=e,r=this.viewportTransform.slice(0);e=a(e,o(this.viewportTransform)),r[0]=t,r[3]=t;var i=a(e,r);return r[4]+=n.x-i.x,r[5]+=n.y-i.y,this.setViewportTransform(r)},setZoom:function(e){return this.zoomToPoint(new t.Point(0,0),e),this},absolutePan:function(e){var t=this.viewportTransform.slice(0);return t[4]=-e.x,t[5]=-e.y,this.setViewportTransform(t)},relativePan:function(e){return this.absolutePan(new t.Point(-e.x-this.viewportTransform[4],-e.y-this.viewportTransform[5]))},getElement:function(){return this.lowerCanvasEl},_onObjectAdded:function(e){this.stateful&&e.setupState(),e._set(`canvas`,this),e.setCoords(),this.fire(`object:added`,{target:e}),e.fire(`added`)},_onObjectRemoved:function(e){this.fire(`object:removed`,{target:e}),e.fire(`removed`),delete e.canvas},clearContext:function(e){return e.clearRect(0,0,this.width,this.height),this},getContext:function(){return this.contextContainer},clear:function(){return this.remove.apply(this,this.getObjects()),this.backgroundImage=null,this.overlayImage=null,this.backgroundColor=``,this.overlayColor=``,this._hasITextHandlers&&=(this.off(`mouse:up`,this._mouseUpITextHandler),this._iTextInstances=null,!1),this.clearContext(this.contextContainer),this.fire(`canvas:cleared`),this.renderOnAddRemove&&this.requestRenderAll(),this},renderAll:function(){var e=this.contextContainer;return this.renderCanvas(e,this._objects),this},renderAndReset:function(){this.isRendering=0,this.renderAll()},requestRenderAll:function(){return this.isRendering||=t.util.requestAnimFrame(this.renderAndResetBound),this},calcViewportBoundaries:function(){var e={},n=this.width,r=this.height,i=o(this.viewportTransform);return e.tl=a({x:0,y:0},i),e.br=a({x:n,y:r},i),e.tr=new t.Point(e.br.x,e.tl.y),e.bl=new t.Point(e.tl.x,e.br.y),this.vptCoords=e,e},cancelRequestedRender:function(){this.isRendering&&=(t.util.cancelAnimFrame(this.isRendering),0)},renderCanvas:function(e,n){var r=this.viewportTransform,i=this.clipPath;this.cancelRequestedRender(),this.calcViewportBoundaries(),this.clearContext(e),t.util.setImageSmoothing(e,this.imageSmoothingEnabled),this.fire(`before:render`,{ctx:e}),this._renderBackground(e),e.save(),e.transform(r[0],r[1],r[2],r[3],r[4],r[5]),this._renderObjects(e,n),e.restore(),!this.controlsAboveOverlay&&this.interactive&&this.drawControls(e),i&&(i.canvas=this,i.shouldCache(),i._transformDone=!0,i.renderCache({forClipping:!0}),this.drawClipPathOnCanvas(e)),this._renderOverlay(e),this.controlsAboveOverlay&&this.interactive&&this.drawControls(e),this.fire(`after:render`,{ctx:e})},drawClipPathOnCanvas:function(e){var t=this.viewportTransform,n=this.clipPath;e.save(),e.transform(t[0],t[1],t[2],t[3],t[4],t[5]),e.globalCompositeOperation=`destination-in`,n.transform(e),e.scale(1/n.zoomX,1/n.zoomY),e.drawImage(n._cacheCanvas,-n.cacheTranslationX,-n.cacheTranslationY),e.restore()},_renderObjects:function(e,t){var n,r;for(n=0,r=t.length;n<r;++n)t[n]&&t[n].render(e)},_renderBackgroundOrOverlay:function(e,t){var n=this[t+`Color`],r=this[t+`Image`],i=this.viewportTransform,a=this[t+`Vpt`];if(!(!n&&!r)){if(n){e.save(),e.beginPath(),e.moveTo(0,0),e.lineTo(this.width,0),e.lineTo(this.width,this.height),e.lineTo(0,this.height),e.closePath(),e.fillStyle=n.toLive?n.toLive(e,this):n,a&&e.transform(i[0],i[1],i[2],i[3],i[4],i[5]),e.transform(1,0,0,1,n.offsetX||0,n.offsetY||0);var o=n.gradientTransform||n.patternTransform;o&&e.transform(o[0],o[1],o[2],o[3],o[4],o[5]),e.fill(),e.restore()}if(r){e.save();var s=this.skipOffscreen;this.skipOffscreen=a,a&&e.transform(i[0],i[1],i[2],i[3],i[4],i[5]),r.render(e),this.skipOffscreen=s,e.restore()}}},_renderBackground:function(e){this._renderBackgroundOrOverlay(e,`background`)},_renderOverlay:function(e){this._renderBackgroundOrOverlay(e,`overlay`)},getCenter:function(){return{top:this.height/2,left:this.width/2}},getCenterPoint:function(){return new t.Point(this.width/2,this.height/2)},centerObjectH:function(e){return this._centerObject(e,new t.Point(this.getCenterPoint().x,e.getCenterPoint().y))},centerObjectV:function(e){return this._centerObject(e,new t.Point(e.getCenterPoint().x,this.getCenterPoint().y))},centerObject:function(e){var t=this.getCenterPoint();return this._centerObject(e,t)},viewportCenterObject:function(e){var t=this.getVpCenter();return this._centerObject(e,t)},viewportCenterObjectH:function(e){var n=this.getVpCenter();return this._centerObject(e,new t.Point(n.x,e.getCenterPoint().y)),this},viewportCenterObjectV:function(e){var n=this.getVpCenter();return this._centerObject(e,new t.Point(e.getCenterPoint().x,n.y))},getVpCenter:function(){return a(this.getCenterPoint(),o(this.viewportTransform))},_centerObject:function(e,t){return e.setPositionByOrigin(t,`center`,`center`),e.setCoords(),this.renderOnAddRemove&&this.requestRenderAll(),this},toDatalessJSON:function(e){return this.toDatalessObject(e)},toObject:function(e){return this._toObjectMethod(`toObject`,e)},toDatalessObject:function(e){return this._toObjectMethod(`toDatalessObject`,e)},_toObjectMethod:function(n,r){var i=this.clipPath,a={version:t.version,objects:this._toObjects(n,r)};return i&&!i.excludeFromExport&&(a.clipPath=this._toObject(this.clipPath,n,r)),e(a,this.__serializeBgOverlay(n,r)),t.util.populateWithProperties(this,a,r),a},_toObjects:function(e,t){return this._objects.filter(function(e){return!e.excludeFromExport}).map(function(n){return this._toObject(n,e,t)},this)},_toObject:function(e,t,n){var r;this.includeDefaultValues||(r=e.includeDefaultValues,e.includeDefaultValues=!1);var i=e[t](n);return this.includeDefaultValues||(e.includeDefaultValues=r),i},__serializeBgOverlay:function(e,t){var n={},r=this.backgroundImage,i=this.overlayImage,a=this.backgroundColor,o=this.overlayColor;return a&&a.toObject?a.excludeFromExport||(n.background=a.toObject(t)):a&&(n.background=a),o&&o.toObject?o.excludeFromExport||(n.overlay=o.toObject(t)):o&&(n.overlay=o),r&&!r.excludeFromExport&&(n.backgroundImage=this._toObject(r,e,t)),i&&!i.excludeFromExport&&(n.overlayImage=this._toObject(i,e,t)),n},svgViewportTransformation:!0,toSVG:function(e,t){e||={},e.reviver=t;var n=[];return this._setSVGPreamble(n,e),this._setSVGHeader(n,e),this.clipPath&&n.push(`<g clip-path="url(#`+this.clipPath.clipPathId+`)" >
-`),this._setSVGBgOverlayColor(n,`background`),this._setSVGBgOverlayImage(n,`backgroundImage`,t),this._setSVGObjects(n,t),this.clipPath&&n.push(`</g>
-`),this._setSVGBgOverlayColor(n,`overlay`),this._setSVGBgOverlayImage(n,`overlayImage`,t),n.push(`</svg>`),n.join(``)},_setSVGPreamble:function(e,t){t.suppressPreamble||e.push(`<?xml version="1.0" encoding="`,t.encoding||`UTF-8`,`" standalone="no" ?>
-`,`<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" `,`"http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
-`)},_setSVGHeader:function(e,n){var r=n.width||this.width,a=n.height||this.height,o,s=`viewBox="0 0 `+this.width+` `+this.height+`" `,c=t.Object.NUM_FRACTION_DIGITS;n.viewBox?s=`viewBox="`+n.viewBox.x+` `+n.viewBox.y+` `+n.viewBox.width+` `+n.viewBox.height+`" `:this.svgViewportTransformation&&(o=this.viewportTransform,s=`viewBox="`+i(-o[4]/o[0],c)+` `+i(-o[5]/o[3],c)+` `+i(this.width/o[0],c)+` `+i(this.height/o[3],c)+`" `),e.push(`<svg `,`xmlns="http://www.w3.org/2000/svg" `,`xmlns:xlink="http://www.w3.org/1999/xlink" `,`version="1.1" `,`width="`,r,`" `,`height="`,a,`" `,s,`xml:space="preserve">
-`,`<desc>Created with Fabric.js `,t.version,`</desc>
-`,`<defs>
-`,this.createSVGFontFacesMarkup(),this.createSVGRefElementsMarkup(),this.createSVGClipPathMarkup(n),`</defs>
-`)},createSVGClipPathMarkup:function(e){var n=this.clipPath;return n?(n.clipPathId=`CLIPPATH_`+ t.Object.__uid++,`<clipPath id="`+n.clipPathId+`" >
-`+this.clipPath.toClipPathSVG(e.reviver)+`</clipPath>
-`):``},createSVGRefElementsMarkup:function(){var e=this;return[`background`,`overlay`].map(function(n){var r=e[n+`Color`];if(r&&r.toLive){var i=e[n+`Vpt`],a=e.viewportTransform,o={width:e.width/(i?a[0]:1),height:e.height/(i?a[3]:1)};return r.toSVG(o,{additionalTransform:i?t.util.matrixToSVG(a):``})}}).join(``)},createSVGFontFacesMarkup:function(){var e=``,n={},r,i,a,o,s,c,l,u,d,f=t.fontPaths,p=[];for(this._objects.forEach(function e(t){p.push(t),t._objects&&t._objects.forEach(e)}),u=0,d=p.length;u<d;u++)if(r=p[u],i=r.fontFamily,!(r.type.indexOf(`text`)===-1||n[i]||!f[i])&&(n[i]=!0,r.styles))for(s in a=r.styles,a)for(l in o=a[s],o)c=o[l],i=c.fontFamily,!n[i]&&f[i]&&(n[i]=!0);for(var m in n)e+=[`		@font-face {
-`,`			font-family: '`,m,`';
-`,`			src: url('`,f[m],`');
-`,`		}
-`].join(``);return e&&=[`	<style type="text/css">`,`<![CDATA[
-`,e,`]]>`,`</style>
-`].join(``),e},_setSVGObjects:function(e,t){var n,r,i,a=this._objects;for(r=0,i=a.length;r<i;r++)n=a[r],!n.excludeFromExport&&this._setSVGObject(e,n,t)},_setSVGObject:function(e,t,n){e.push(t.toSVG(n))},_setSVGBgOverlayImage:function(e,t,n){this[t]&&!this[t].excludeFromExport&&this[t].toSVG&&e.push(this[t].toSVG(n))},_setSVGBgOverlayColor:function(e,n){var r=this[n+`Color`],i=this.viewportTransform,a=this.width,o=this.height;if(r)if(r.toLive){var s=r.repeat,c=t.util.invertTransform(i),l=this[n+`Vpt`]?t.util.matrixToSVG(c):``;e.push(`<rect transform="`+l+` translate(`,a/2,`,`,o/2,`)"`,` x="`,r.offsetX-a/2,`" y="`,r.offsetY-o/2,`" `,`width="`,s===`repeat-y`||s===`no-repeat`?r.source.width:a,`" height="`,s===`repeat-x`||s===`no-repeat`?r.source.height:o,`" fill="url(#SVGID_`+r.id+`)"`,`></rect>
-`)}else e.push(`<rect x="0" y="0" width="100%" height="100%" `,`fill="`,r,`"`,`></rect>
-`)},sendToBack:function(e){if(!e)return this;var t=this._activeObject,n,i,a;if(e===t&&e.type===`activeSelection`)for(a=t._objects,n=a.length;n--;)i=a[n],r(this._objects,i),this._objects.unshift(i);else r(this._objects,e),this._objects.unshift(e);return this.renderOnAddRemove&&this.requestRenderAll(),this},bringToFront:function(e){if(!e)return this;var t=this._activeObject,n,i,a;if(e===t&&e.type===`activeSelection`)for(a=t._objects,n=0;n<a.length;n++)i=a[n],r(this._objects,i),this._objects.push(i);else r(this._objects,e),this._objects.push(e);return this.renderOnAddRemove&&this.requestRenderAll(),this},sendBackwards:function(e,t){if(!e)return this;var n=this._activeObject,i,a,o,s,c,l=0;if(e===n&&e.type===`activeSelection`)for(c=n._objects,i=0;i<c.length;i++)a=c[i],o=this._objects.indexOf(a),o>0+l&&(s=o-1,r(this._objects,a),this._objects.splice(s,0,a)),l++;else o=this._objects.indexOf(e),o!==0&&(s=this._findNewLowerIndex(e,o,t),r(this._objects,e),this._objects.splice(s,0,e));return this.renderOnAddRemove&&this.requestRenderAll(),this},_findNewLowerIndex:function(e,t,n){var r,i;if(n){for(r=t,i=t-1;i>=0;--i)if(e.intersectsWithObject(this._objects[i])||e.isContainedWithinObject(this._objects[i])||this._objects[i].isContainedWithinObject(e)){r=i;break}}else r=t-1;return r},bringForward:function(e,t){if(!e)return this;var n=this._activeObject,i,a,o,s,c,l=0;if(e===n&&e.type===`activeSelection`)for(c=n._objects,i=c.length;i--;)a=c[i],o=this._objects.indexOf(a),o<this._objects.length-1-l&&(s=o+1,r(this._objects,a),this._objects.splice(s,0,a)),l++;else o=this._objects.indexOf(e),o!==this._objects.length-1&&(s=this._findNewUpperIndex(e,o,t),r(this._objects,e),this._objects.splice(s,0,e));return this.renderOnAddRemove&&this.requestRenderAll(),this},_findNewUpperIndex:function(e,t,n){var r,i,a;if(n){for(r=t,i=t+1,a=this._objects.length;i<a;++i)if(e.intersectsWithObject(this._objects[i])||e.isContainedWithinObject(this._objects[i])||this._objects[i].isContainedWithinObject(e)){r=i;break}}else r=t+1;return r},moveTo:function(e,t){return r(this._objects,e),this._objects.splice(t,0,e),this.renderOnAddRemove&&this.requestRenderAll()},dispose:function(){return this.isRendering&&=(t.util.cancelAnimFrame(this.isRendering),0),this.forEachObject(function(e){e.dispose&&e.dispose()}),this._objects=[],this.backgroundImage&&this.backgroundImage.dispose&&this.backgroundImage.dispose(),this.backgroundImage=null,this.overlayImage&&this.overlayImage.dispose&&this.overlayImage.dispose(),this.overlayImage=null,this._iTextInstances=null,this.contextContainer=null,this.lowerCanvasEl.classList.remove(`lower-canvas`),t.util.setStyle(this.lowerCanvasEl,this._originalCanvasStyle),delete this._originalCanvasStyle,this.lowerCanvasEl.setAttribute(`width`,this.width),this.lowerCanvasEl.setAttribute(`height`,this.height),t.util.cleanUpJsdomNode(this.lowerCanvasEl),this.lowerCanvasEl=void 0,this},toString:function(){return`#<fabric.Canvas (`+this.complexity()+`): { objects: `+this._objects.length+` }>`}}),e(t.StaticCanvas.prototype,t.Observable),e(t.StaticCanvas.prototype,t.Collection),e(t.StaticCanvas.prototype,t.DataURLExporter),e(t.StaticCanvas,{EMPTY_JSON:`{"objects": [], "background": "white"}`,supports:function(e){var t=c();if(!t||!t.getContext)return null;var n=t.getContext(`2d`);if(!n)return null;switch(e){case`setLineDash`:return n.setLineDash!==void 0;default:return null}}}),t.StaticCanvas.prototype.toJSON=t.StaticCanvas.prototype.toObject,t.isLikelyNode&&(t.StaticCanvas.prototype.createPNGStream=function(){var e=s(this.lowerCanvasEl);return e&&e.createPNGStream()},t.StaticCanvas.prototype.createJPEGStream=function(e){var t=s(this.lowerCanvasEl);return t&&t.createJPEGStream(e)})})(),t.BaseBrush=t.util.createClass({color:`rgb(0, 0, 0)`,width:1,shadow:null,strokeLineCap:`round`,strokeLineJoin:`round`,strokeMiterLimit:10,strokeDashArray:null,limitedToCanvasSize:!1,_setBrushStyles:function(e){e.strokeStyle=this.color,e.lineWidth=this.width,e.lineCap=this.strokeLineCap,e.miterLimit=this.strokeMiterLimit,e.lineJoin=this.strokeLineJoin,e.setLineDash(this.strokeDashArray||[])},_saveAndTransform:function(e){var t=this.canvas.viewportTransform;e.save(),e.transform(t[0],t[1],t[2],t[3],t[4],t[5])},_setShadow:function(){if(this.shadow){var e=this.canvas,n=this.shadow,r=e.contextTop,i=e.getZoom();e&&e._isRetinaScaling()&&(i*=t.devicePixelRatio),r.shadowColor=n.color,r.shadowBlur=n.blur*i,r.shadowOffsetX=n.offsetX*i,r.shadowOffsetY=n.offsetY*i}},needsFullRender:function(){return new t.Color(this.color).getAlpha()<1||!!this.shadow},_resetShadow:function(){var e=this.canvas.contextTop;e.shadowColor=``,e.shadowBlur=e.shadowOffsetX=e.shadowOffsetY=0},_isOutSideCanvas:function(e){return e.x<0||e.x>this.canvas.getWidth()||e.y<0||e.y>this.canvas.getHeight()}}),(function(){t.PencilBrush=t.util.createClass(t.BaseBrush,{decimate:.4,drawStraightLine:!1,straightLineKey:`shiftKey`,initialize:function(e){this.canvas=e,this._points=[]},needsFullRender:function(){return this.callSuper(`needsFullRender`)||this._hasStraightLine},_drawSegment:function(e,t,n){var r=t.midPointFrom(n);return e.quadraticCurveTo(t.x,t.y,r.x,r.y),r},onMouseDown:function(e,t){this.canvas._isMainEvent(t.e)&&(this.drawStraightLine=t.e[this.straightLineKey],this._prepareForDrawing(e),this._captureDrawingPath(e),this._render())},onMouseMove:function(e,t){if(this.canvas._isMainEvent(t.e)&&(this.drawStraightLine=t.e[this.straightLineKey],!(this.limitedToCanvasSize===!0&&this._isOutSideCanvas(e))&&this._captureDrawingPath(e)&&this._points.length>1))if(this.needsFullRender())this.canvas.clearContext(this.canvas.contextTop),this._render();else{var n=this._points,r=n.length,i=this.canvas.contextTop;this._saveAndTransform(i),this.oldEnd&&(i.beginPath(),i.moveTo(this.oldEnd.x,this.oldEnd.y)),this.oldEnd=this._drawSegment(i,n[r-2],n[r-1],!0),i.stroke(),i.restore()}},onMouseUp:function(e){return this.canvas._isMainEvent(e.e)?(this.drawStraightLine=!1,this.oldEnd=void 0,this._finalizeAndAddPath(),!1):!0},_prepareForDrawing:function(e){var n=new t.Point(e.x,e.y);this._reset(),this._addPoint(n),this.canvas.contextTop.moveTo(n.x,n.y)},_addPoint:function(e){return this._points.length>1&&e.eq(this._points[this._points.length-1])?!1:(this.drawStraightLine&&this._points.length>1&&(this._hasStraightLine=!0,this._points.pop()),this._points.push(e),!0)},_reset:function(){this._points=[],this._setBrushStyles(this.canvas.contextTop),this._setShadow(),this._hasStraightLine=!1},_captureDrawingPath:function(e){var n=new t.Point(e.x,e.y);return this._addPoint(n)},_render:function(e){var n,r,i=this._points[0],a=this._points[1];if(e||=this.canvas.contextTop,this._saveAndTransform(e),e.beginPath(),this._points.length===2&&i.x===a.x&&i.y===a.y){var o=this.width/1e3;i=new t.Point(i.x,i.y),a=new t.Point(a.x,a.y),i.x-=o,a.x+=o}for(e.moveTo(i.x,i.y),n=1,r=this._points.length;n<r;n++)this._drawSegment(e,i,a),i=this._points[n],a=this._points[n+1];e.lineTo(i.x,i.y),e.stroke(),e.restore()},convertPointsToSVGPath:function(e){var n=this.width/1e3;return t.util.getSmoothPathFromPoints(e,n)},_isEmptySVGPath:function(e){return t.util.joinPath(e)===`M 0 0 Q 0 0 0 0 L 0 0`},createPath:function(e){var n=new t.Path(e,{fill:null,stroke:this.color,strokeWidth:this.width,strokeLineCap:this.strokeLineCap,strokeMiterLimit:this.strokeMiterLimit,strokeLineJoin:this.strokeLineJoin,strokeDashArray:this.strokeDashArray});return this.shadow&&(this.shadow.affectStroke=!0,n.shadow=new t.Shadow(this.shadow)),n},decimatePoints:function(e,t){if(e.length<=2)return e;var n=(t/this.canvas.getZoom())**2,r,i=e.length-1,a=e[0],o=[a],s;for(r=1;r<i-1;r++)s=(a.x-e[r].x)**2+(a.y-e[r].y)**2,s>=n&&(a=e[r],o.push(a));return o.push(e[i]),o},_finalizeAndAddPath:function(){this.canvas.contextTop.closePath(),this.decimate&&(this._points=this.decimatePoints(this._points,this.decimate));var e=this.convertPointsToSVGPath(this._points);if(this._isEmptySVGPath(e)){this.canvas.requestRenderAll();return}var t=this.createPath(e);this.canvas.clearContext(this.canvas.contextTop),this.canvas.fire(`before:path:created`,{path:t}),this.canvas.add(t),this.canvas.requestRenderAll(),t.setCoords(),this._resetShadow(),this.canvas.fire(`path:created`,{path:t})}})})(),t.CircleBrush=t.util.createClass(t.BaseBrush,{width:10,initialize:function(e){this.canvas=e,this.points=[]},drawDot:function(e){var t=this.addPoint(e),n=this.canvas.contextTop;this._saveAndTransform(n),this.dot(n,t),n.restore()},dot:function(e,t){e.fillStyle=t.fill,e.beginPath(),e.arc(t.x,t.y,t.radius,0,Math.PI*2,!1),e.closePath(),e.fill()},onMouseDown:function(e){this.points.length=0,this.canvas.clearContext(this.canvas.contextTop),this._setShadow(),this.drawDot(e)},_render:function(){var e=this.canvas.contextTop,t,n,r=this.points;for(this._saveAndTransform(e),t=0,n=r.length;t<n;t++)this.dot(e,r[t]);e.restore()},onMouseMove:function(e){this.limitedToCanvasSize===!0&&this._isOutSideCanvas(e)||(this.needsFullRender()?(this.canvas.clearContext(this.canvas.contextTop),this.addPoint(e),this._render()):this.drawDot(e))},onMouseUp:function(){var e=this.canvas.renderOnAddRemove,n,r;this.canvas.renderOnAddRemove=!1;var i=[];for(n=0,r=this.points.length;n<r;n++){var a=this.points[n],o=new t.Circle({radius:a.radius,left:a.x,top:a.y,originX:`center`,originY:`center`,fill:a.fill});this.shadow&&(o.shadow=new t.Shadow(this.shadow)),i.push(o)}var s=new t.Group(i);s.canvas=this.canvas,this.canvas.fire(`before:path:created`,{path:s}),this.canvas.add(s),this.canvas.fire(`path:created`,{path:s}),this.canvas.clearContext(this.canvas.contextTop),this._resetShadow(),this.canvas.renderOnAddRemove=e,this.canvas.requestRenderAll()},addPoint:function(e){var n=new t.Point(e.x,e.y),r=t.util.getRandomInt(Math.max(0,this.width-20),this.width+20)/2,i=new t.Color(this.color).setAlpha(t.util.getRandomInt(0,100)/100).toRgba();return n.radius=r,n.fill=i,this.points.push(n),n}}),t.SprayBrush=t.util.createClass(t.BaseBrush,{width:10,density:20,dotWidth:1,dotWidthVariance:1,randomOpacity:!1,optimizeOverlapping:!0,initialize:function(e){this.canvas=e,this.sprayChunks=[]},onMouseDown:function(e){this.sprayChunks.length=0,this.canvas.clearContext(this.canvas.contextTop),this._setShadow(),this.addSprayChunk(e),this.render(this.sprayChunkPoints)},onMouseMove:function(e){this.limitedToCanvasSize===!0&&this._isOutSideCanvas(e)||(this.addSprayChunk(e),this.render(this.sprayChunkPoints))},onMouseUp:function(){var e=this.canvas.renderOnAddRemove;this.canvas.renderOnAddRemove=!1;for(var n=[],r=0,i=this.sprayChunks.length;r<i;r++)for(var a=this.sprayChunks[r],o=0,s=a.length;o<s;o++){var c=new t.Rect({width:a[o].width,height:a[o].width,left:a[o].x+1,top:a[o].y+1,originX:`center`,originY:`center`,fill:this.color});n.push(c)}this.optimizeOverlapping&&(n=this._getOptimizedRects(n));var l=new t.Group(n);this.shadow&&l.set(`shadow`,new t.Shadow(this.shadow)),this.canvas.fire(`before:path:created`,{path:l}),this.canvas.add(l),this.canvas.fire(`path:created`,{path:l}),this.canvas.clearContext(this.canvas.contextTop),this._resetShadow(),this.canvas.renderOnAddRemove=e,this.canvas.requestRenderAll()},_getOptimizedRects:function(e){var t={},n,r,i;for(r=0,i=e.length;r<i;r++)n=e[r].left+``+e[r].top,t[n]||(t[n]=e[r]);var a=[];for(n in t)a.push(t[n]);return a},render:function(e){var t=this.canvas.contextTop,n,r;for(t.fillStyle=this.color,this._saveAndTransform(t),n=0,r=e.length;n<r;n++){var i=e[n];i.opacity!==void 0&&(t.globalAlpha=i.opacity),t.fillRect(i.x,i.y,i.width,i.width)}t.restore()},_render:function(){var e=this.canvas.contextTop,t,n;for(e.fillStyle=this.color,this._saveAndTransform(e),t=0,n=this.sprayChunks.length;t<n;t++)this.render(this.sprayChunks[t]);e.restore()},addSprayChunk:function(e){this.sprayChunkPoints=[];var n,r,i,a=this.width/2,o;for(o=0;o<this.density;o++){n=t.util.getRandomInt(e.x-a,e.x+a),r=t.util.getRandomInt(e.y-a,e.y+a),i=this.dotWidthVariance?t.util.getRandomInt(Math.max(1,this.dotWidth-this.dotWidthVariance),this.dotWidth+this.dotWidthVariance):this.dotWidth;var s=new t.Point(n,r);s.width=i,this.randomOpacity&&(s.opacity=t.util.getRandomInt(0,100)/100),this.sprayChunkPoints.push(s)}this.sprayChunks.push(this.sprayChunkPoints)}}),t.PatternBrush=t.util.createClass(t.PencilBrush,{getPatternSrc:function(){var e=20,n=5,r=t.util.createCanvasElement(),i=r.getContext(`2d`);return r.width=r.height=e+n,i.fillStyle=this.color,i.beginPath(),i.arc(e/2,e/2,e/2,0,Math.PI*2,!1),i.closePath(),i.fill(),r},getPatternSrcFunction:function(){return String(this.getPatternSrc).replace(`this.color`,`"`+this.color+`"`)},getPattern:function(e){return e.createPattern(this.source||this.getPatternSrc(),`repeat`)},_setBrushStyles:function(e){this.callSuper(`_setBrushStyles`,e),e.strokeStyle=this.getPattern(e)},createPath:function(e){var n=this.callSuper(`createPath`,e),r=n._getLeftTopCoords().scalarAdd(n.strokeWidth/2);return n.stroke=new t.Pattern({source:this.source||this.getPatternSrcFunction(),offsetX:-r.x,offsetY:-r.y}),n}}),(function(){var e=t.util.getPointer,n=t.util.degreesToRadians,r=t.util.isTouchEvent;for(var i in t.Canvas=t.util.createClass(t.StaticCanvas,{initialize:function(e,t){t||={},this.renderAndResetBound=this.renderAndReset.bind(this),this.requestRenderAllBound=this.requestRenderAll.bind(this),this._initStatic(e,t),this._initInteractive(),this._createCacheCanvas()},uniformScaling:!0,uniScaleKey:`shiftKey`,centeredScaling:!1,centeredRotation:!1,centeredKey:`altKey`,altActionKey:`shiftKey`,interactive:!0,selection:!0,selectionKey:`shiftKey`,altSelectionKey:null,selectionColor:`rgba(100, 100, 255, 0.3)`,selectionDashArray:[],selectionBorderColor:`rgba(255, 255, 255, 0.3)`,selectionLineWidth:1,selectionFullyContained:!1,hoverCursor:`move`,moveCursor:`move`,defaultCursor:`default`,freeDrawingCursor:`crosshair`,notAllowedCursor:`not-allowed`,containerClass:`canvas-container`,perPixelTargetFind:!1,targetFindTolerance:0,skipTargetFind:!1,isDrawingMode:!1,preserveObjectStacking:!1,snapAngle:0,snapThreshold:null,stopContextMenu:!1,fireRightClick:!1,fireMiddleClick:!1,targets:[],enablePointerEvents:!1,_hoveredTarget:null,_hoveredTargets:[],_initInteractive:function(){this._currentTransform=null,this._groupSelector=null,this._initWrapperElement(),this._createUpperCanvas(),this._initEventListeners(),this._initRetinaScaling(),this.freeDrawingBrush=t.PencilBrush&&new t.PencilBrush(this),this.calcOffset()},_chooseObjectsToRender:function(){var e=this.getActiveObjects(),t,n,r;if(e.length>0&&!this.preserveObjectStacking){n=[],r=[];for(var i=0,a=this._objects.length;i<a;i++)t=this._objects[i],e.indexOf(t)===-1?n.push(t):r.push(t);e.length>1&&(this._activeObject._objects=r),n.push.apply(n,r)}else n=this._objects;return n},renderAll:function(){this.contextTopDirty&&!this._groupSelector&&!this.isDrawingMode&&(this.clearContext(this.contextTop),this.contextTopDirty=!1),this.hasLostContext&&=(this.renderTopLayer(this.contextTop),!1);var e=this.contextContainer;return this.renderCanvas(e,this._chooseObjectsToRender()),this},renderTopLayer:function(e){e.save(),this.isDrawingMode&&this._isCurrentlyDrawing&&(this.freeDrawingBrush&&this.freeDrawingBrush._render(),this.contextTopDirty=!0),this.selection&&this._groupSelector&&(this._drawSelection(e),this.contextTopDirty=!0),e.restore()},renderTop:function(){var e=this.contextTop;return this.clearContext(e),this.renderTopLayer(e),this.fire(`after:render`),this},_normalizePointer:function(e,n){var r=e.calcTransformMatrix(),i=t.util.invertTransform(r),a=this.restorePointerVpt(n);return t.util.transformPoint(a,i)},isTargetTransparent:function(e,n,r){if(e.shouldCache()&&e._cacheCanvas&&e!==this._activeObject){var i=this._normalizePointer(e,{x:n,y:r}),a=Math.max(e.cacheTranslationX+i.x*e.zoomX,0),o=Math.max(e.cacheTranslationY+i.y*e.zoomY,0),s=t.util.isTransparent(e._cacheContext,Math.round(a),Math.round(o),this.targetFindTolerance);return s}var c=this.contextCache,l=e.selectionBackgroundColor,u=this.viewportTransform;e.selectionBackgroundColor=``,this.clearContext(c),c.save(),c.transform(u[0],u[1],u[2],u[3],u[4],u[5]),e.render(c),c.restore(),e.selectionBackgroundColor=l;var s=t.util.isTransparent(c,n,r,this.targetFindTolerance);return s},_isSelectionKeyPressed:function(e){var t=!1;return t=Array.isArray(this.selectionKey)?!!this.selectionKey.find(function(t){return e[t]===!0}):e[this.selectionKey],t},_shouldClearSelection:function(e,t){var n=this.getActiveObjects(),r=this._activeObject;return!t||t&&r&&n.length>1&&n.indexOf(t)===-1&&r!==t&&!this._isSelectionKeyPressed(e)||t&&!t.evented||t&&!t.selectable&&r&&r!==t},_shouldCenterTransform:function(e,t,n){if(e){var r;return t===`scale`||t===`scaleX`||t===`scaleY`||t===`resizing`?r=this.centeredScaling||e.centeredScaling:t===`rotate`&&(r=this.centeredRotation||e.centeredRotation),r?!n:n}},_getOriginFromCorner:function(e,t){var n={x:e.originX,y:e.originY};return t===`ml`||t===`tl`||t===`bl`?n.x=`right`:(t===`mr`||t===`tr`||t===`br`)&&(n.x=`left`),t===`tl`||t===`mt`||t===`tr`?n.y=`bottom`:(t===`bl`||t===`mb`||t===`br`)&&(n.y=`top`),n},_getActionFromCorner:function(e,t,n,r){if(!t||!e)return`drag`;var i=r.controls[t];return i.getActionName(n,i,r)},_setupCurrentTransform:function(e,r,i){if(r){var a=this.getPointer(e),o=r.__corner,s=r.controls[o],c=i&&o?s.getActionHandler(e,r,s):t.controlsUtils.dragHandler,l=this._getActionFromCorner(i,o,e,r),u=this._getOriginFromCorner(r,o),d=e[this.centeredKey],f={target:r,action:l,actionHandler:c,corner:o,scaleX:r.scaleX,scaleY:r.scaleY,skewX:r.skewX,skewY:r.skewY,offsetX:a.x-r.left,offsetY:a.y-r.top,originX:u.x,originY:u.y,ex:a.x,ey:a.y,lastX:a.x,lastY:a.y,theta:n(r.angle),width:r.width*r.scaleX,shiftKey:e.shiftKey,altKey:d,original:t.util.saveObjectTransform(r)};this._shouldCenterTransform(r,l,d)&&(f.originX=`center`,f.originY=`center`),f.original.originX=u.x,f.original.originY=u.y,this._currentTransform=f,this._beforeTransform(e)}},setCursor:function(e){this.upperCanvasEl.style.cursor=e},_drawSelection:function(e){var n=this._groupSelector,r=new t.Point(n.ex,n.ey),i=t.util.transformPoint(r,this.viewportTransform),a=new t.Point(n.ex+n.left,n.ey+n.top),o=t.util.transformPoint(a,this.viewportTransform),s=Math.min(i.x,o.x),c=Math.min(i.y,o.y),l=Math.max(i.x,o.x),u=Math.max(i.y,o.y),d=this.selectionLineWidth/2;this.selectionColor&&(e.fillStyle=this.selectionColor,e.fillRect(s,c,l-s,u-c)),!(!this.selectionLineWidth||!this.selectionBorderColor)&&(e.lineWidth=this.selectionLineWidth,e.strokeStyle=this.selectionBorderColor,s+=d,c+=d,l-=d,u-=d,t.Object.prototype._setLineDash.call(this,e,this.selectionDashArray),e.strokeRect(s,c,l-s,u-c))},findTarget:function(e,t){if(!this.skipTargetFind){var n=this.getPointer(e,!0),i=this._activeObject,a=this.getActiveObjects(),o,s,c=r(e),l=a.length>1&&!t||a.length===1;if(this.targets=[],l&&i._findTargetCorner(n,c)||a.length>1&&!t&&i===this._searchPossibleTargets([i],n))return i;if(a.length===1&&i===this._searchPossibleTargets([i],n))if(this.preserveObjectStacking)o=i,s=this.targets,this.targets=[];else return i;var u=this._searchPossibleTargets(this._objects,n);return e[this.altSelectionKey]&&u&&o&&u!==o&&(u=o,this.targets=s),u}},_checkTarget:function(e,t,n){if(t&&t.visible&&t.evented&&t.containsPoint(e))if((this.perPixelTargetFind||t.perPixelTargetFind)&&!t.isEditing){if(!this.isTargetTransparent(t,n.x,n.y))return!0}else return!0},_searchPossibleTargets:function(e,n){for(var r,i=e.length,a;i--;){var o=e[i],s=o.group?this._normalizePointer(o.group,n):n;if(this._checkTarget(s,o,n)){r=e[i],r.subTargetCheck&&r instanceof t.Group&&(a=this._searchPossibleTargets(r._objects,n),a&&this.targets.push(a));break}}return r},restorePointerVpt:function(e){return t.util.transformPoint(e,t.util.invertTransform(this.viewportTransform))},getPointer:function(t,n){if(this._absolutePointer&&!n)return this._absolutePointer;if(this._pointer&&n)return this._pointer;var r=e(t),i=this.upperCanvasEl,a=i.getBoundingClientRect(),o=a.width||0,s=a.height||0,c;(!o||!s)&&(`top`in a&&`bottom`in a&&(s=Math.abs(a.top-a.bottom)),`right`in a&&`left`in a&&(o=Math.abs(a.right-a.left))),this.calcOffset(),r.x-=this._offset.left,r.y-=this._offset.top,n||(r=this.restorePointerVpt(r));var l=this.getRetinaScaling();return l!==1&&(r.x/=l,r.y/=l),c=o===0||s===0?{width:1,height:1}:{width:i.width/o,height:i.height/s},{x:r.x*c.width,y:r.y*c.height}},_createUpperCanvas:function(){var e=this.lowerCanvasEl.className.replace(/\s*lower-canvas\s*/,``),n=this.lowerCanvasEl,r=this.upperCanvasEl;r?r.className=``:(r=this._createCanvasElement(),this.upperCanvasEl=r),t.util.addClass(r,`upper-canvas `+e),this.wrapperEl.appendChild(r),this._copyCanvasStyle(n,r),this._applyCanvasStyle(r),this.contextTop=r.getContext(`2d`)},getTopContext:function(){return this.contextTop},_createCacheCanvas:function(){this.cacheCanvasEl=this._createCanvasElement(),this.cacheCanvasEl.setAttribute(`width`,this.width),this.cacheCanvasEl.setAttribute(`height`,this.height),this.contextCache=this.cacheCanvasEl.getContext(`2d`)},_initWrapperElement:function(){this.wrapperEl=t.util.wrapElement(this.lowerCanvasEl,`div`,{class:this.containerClass}),t.util.setStyle(this.wrapperEl,{width:this.width+`px`,height:this.height+`px`,position:`relative`}),t.util.makeElementUnselectable(this.wrapperEl)},_applyCanvasStyle:function(e){var n=this.width||e.width,r=this.height||e.height;t.util.setStyle(e,{position:`absolute`,width:n+`px`,height:r+`px`,left:0,top:0,"touch-action":this.allowTouchScrolling?`manipulation`:`none`,"-ms-touch-action":this.allowTouchScrolling?`manipulation`:`none`}),e.width=n,e.height=r,t.util.makeElementUnselectable(e)},_copyCanvasStyle:function(e,t){t.style.cssText=e.style.cssText},getSelectionContext:function(){return this.contextTop},getSelectionElement:function(){return this.upperCanvasEl},getActiveObject:function(){return this._activeObject},getActiveObjects:function(){var e=this._activeObject;return e?e.type===`activeSelection`&&e._objects?e._objects.slice(0):[e]:[]},_onObjectRemoved:function(e){e===this._activeObject&&(this.fire(`before:selection:cleared`,{target:e}),this._discardActiveObject(),this.fire(`selection:cleared`,{target:e}),e.fire(`deselected`)),e===this._hoveredTarget&&(this._hoveredTarget=null,this._hoveredTargets=[]),this.callSuper(`_onObjectRemoved`,e)},_fireSelectionEvents:function(e,t){var n=!1,r=this.getActiveObjects(),i=[],a=[];e.forEach(function(e){r.indexOf(e)===-1&&(n=!0,e.fire(`deselected`,{e:t,target:e}),a.push(e))}),r.forEach(function(r){e.indexOf(r)===-1&&(n=!0,r.fire(`selected`,{e:t,target:r}),i.push(r))}),e.length>0&&r.length>0?n&&this.fire(`selection:updated`,{e:t,selected:i,deselected:a}):r.length>0?this.fire(`selection:created`,{e:t,selected:i}):e.length>0&&this.fire(`selection:cleared`,{e:t,deselected:a})},setActiveObject:function(e,t){var n=this.getActiveObjects();return this._setActiveObject(e,t),this._fireSelectionEvents(n,t),this},_setActiveObject:function(e,t){return this._activeObject===e||!this._discardActiveObject(t,e)||e.onSelect({e:t})?!1:(this._activeObject=e,!0)},_discardActiveObject:function(e,t){var n=this._activeObject;if(n){if(n.onDeselect({e,object:t}))return!1;this._activeObject=null}return!0},discardActiveObject:function(e){var t=this.getActiveObjects(),n=this.getActiveObject();return t.length&&this.fire(`before:selection:cleared`,{target:n,e}),this._discardActiveObject(e),this._fireSelectionEvents(t,e),this},dispose:function(){var e=this.wrapperEl;return this.removeListeners(),e.removeChild(this.upperCanvasEl),e.removeChild(this.lowerCanvasEl),this.contextCache=null,this.contextTop=null,[`upperCanvasEl`,`cacheCanvasEl`].forEach((function(e){t.util.cleanUpJsdomNode(this[e]),this[e]=void 0}).bind(this)),e.parentNode&&e.parentNode.replaceChild(this.lowerCanvasEl,this.wrapperEl),delete this.wrapperEl,t.StaticCanvas.prototype.dispose.call(this),this},clear:function(){return this.discardActiveObject(),this.clearContext(this.contextTop),this.callSuper(`clear`)},drawControls:function(e){var t=this._activeObject;t&&t._renderControls(e)},_toObject:function(e,t,n){var r=this._realizeGroupTransformOnObject(e),i=this.callSuper(`_toObject`,e,t,n);return this._unwindGroupTransformOnObject(e,r),i},_realizeGroupTransformOnObject:function(e){if(e.group&&e.group.type===`activeSelection`&&this._activeObject===e.group){var n=[`angle`,`flipX`,`flipY`,`left`,`scaleX`,`scaleY`,`skewX`,`skewY`,`top`],r={};return n.forEach(function(t){r[t]=e[t]}),t.util.addTransformToObject(e,this._activeObject.calcOwnMatrix()),r}else return null},_unwindGroupTransformOnObject:function(e,t){t&&e.set(t)},_setSVGObject:function(e,t,n){var r=this._realizeGroupTransformOnObject(t);this.callSuper(`_setSVGObject`,e,t,n),this._unwindGroupTransformOnObject(t,r)},setViewportTransform:function(e){this.renderOnAddRemove&&this._activeObject&&this._activeObject.isEditing&&this._activeObject.clearContextTop(),t.StaticCanvas.prototype.setViewportTransform.call(this,e)}}),t.StaticCanvas)i!==`prototype`&&(t.Canvas[i]=t.StaticCanvas[i])})(),(function(){var e=t.util.addListener,n=t.util.removeListener,r=3,i=2,a=1,o={passive:!1};function s(e,t){return e.button&&e.button===t-1}t.util.object.extend(t.Canvas.prototype,{mainTouchId:null,_initEventListeners:function(){this.removeListeners(),this._bindEvents(),this.addOrRemove(e,`add`)},_getEventPrefix:function(){return this.enablePointerEvents?`pointer`:`mouse`},addOrRemove:function(e,n){var r=this.upperCanvasEl,i=this._getEventPrefix();e(t.window,`resize`,this._onResize),e(r,i+`down`,this._onMouseDown),e(r,i+`move`,this._onMouseMove,o),e(r,i+`out`,this._onMouseOut),e(r,i+`enter`,this._onMouseEnter),e(r,`wheel`,this._onMouseWheel),e(r,`contextmenu`,this._onContextMenu),e(r,`dblclick`,this._onDoubleClick),e(r,`dragover`,this._onDragOver),e(r,`dragenter`,this._onDragEnter),e(r,`dragleave`,this._onDragLeave),e(r,`drop`,this._onDrop),this.enablePointerEvents||e(r,`touchstart`,this._onTouchStart,o),typeof eventjs<`u`&&n in eventjs&&(eventjs[n](r,`gesture`,this._onGesture),eventjs[n](r,`drag`,this._onDrag),eventjs[n](r,`orientation`,this._onOrientationChange),eventjs[n](r,`shake`,this._onShake),eventjs[n](r,`longpress`,this._onLongPress))},removeListeners:function(){this.addOrRemove(n,`remove`);var e=this._getEventPrefix();n(t.document,e+`up`,this._onMouseUp),n(t.document,`touchend`,this._onTouchEnd,o),n(t.document,e+`move`,this._onMouseMove,o),n(t.document,`touchmove`,this._onMouseMove,o)},_bindEvents:function(){this.eventsBound||=(this._onMouseDown=this._onMouseDown.bind(this),this._onTouchStart=this._onTouchStart.bind(this),this._onMouseMove=this._onMouseMove.bind(this),this._onMouseUp=this._onMouseUp.bind(this),this._onTouchEnd=this._onTouchEnd.bind(this),this._onResize=this._onResize.bind(this),this._onGesture=this._onGesture.bind(this),this._onDrag=this._onDrag.bind(this),this._onShake=this._onShake.bind(this),this._onLongPress=this._onLongPress.bind(this),this._onOrientationChange=this._onOrientationChange.bind(this),this._onMouseWheel=this._onMouseWheel.bind(this),this._onMouseOut=this._onMouseOut.bind(this),this._onMouseEnter=this._onMouseEnter.bind(this),this._onContextMenu=this._onContextMenu.bind(this),this._onDoubleClick=this._onDoubleClick.bind(this),this._onDragOver=this._onDragOver.bind(this),this._onDragEnter=this._simpleEventHandler.bind(this,`dragenter`),this._onDragLeave=this._simpleEventHandler.bind(this,`dragleave`),this._onDrop=this._onDrop.bind(this),!0)},_onGesture:function(e,t){this.__onTransformGesture&&this.__onTransformGesture(e,t)},_onDrag:function(e,t){this.__onDrag&&this.__onDrag(e,t)},_onMouseWheel:function(e){this.__onMouseWheel(e)},_onMouseOut:function(e){var t=this._hoveredTarget;this.fire(`mouse:out`,{target:t,e}),this._hoveredTarget=null,t&&t.fire(`mouseout`,{e});var n=this;this._hoveredTargets.forEach(function(t){n.fire(`mouse:out`,{target:t,e}),t&&t.fire(`mouseout`,{e})}),this._hoveredTargets=[]},_onMouseEnter:function(e){!this._currentTransform&&!this.findTarget(e)&&(this.fire(`mouse:over`,{target:null,e}),this._hoveredTarget=null,this._hoveredTargets=[])},_onOrientationChange:function(e,t){this.__onOrientationChange&&this.__onOrientationChange(e,t)},_onShake:function(e,t){this.__onShake&&this.__onShake(e,t)},_onLongPress:function(e,t){this.__onLongPress&&this.__onLongPress(e,t)},_onDragOver:function(e){e.preventDefault();var t=this._simpleEventHandler(`dragover`,e);this._fireEnterLeaveEvents(t,e)},_onDrop:function(e){return this._simpleEventHandler(`drop:before`,e),this._simpleEventHandler(`drop`,e)},_onContextMenu:function(e){return this.stopContextMenu&&(e.stopPropagation(),e.preventDefault()),!1},_onDoubleClick:function(e){this._cacheTransformEventData(e),this._handleEvent(e,`dblclick`),this._resetTransformEventData(e)},getPointerId:function(e){var t=e.changedTouches;return t?t[0]&&t[0].identifier:this.enablePointerEvents?e.pointerId:-1},_isMainEvent:function(e){return e.isPrimary===!0?!0:e.isPrimary===!1?!1:e.type===`touchend`&&e.touches.length===0?!0:e.changedTouches?e.changedTouches[0].identifier===this.mainTouchId:!0},_onTouchStart:function(r){r.preventDefault(),this.mainTouchId===null&&(this.mainTouchId=this.getPointerId(r)),this.__onMouseDown(r),this._resetTransformEventData();var i=this.upperCanvasEl,a=this._getEventPrefix();e(t.document,`touchend`,this._onTouchEnd,o),e(t.document,`touchmove`,this._onMouseMove,o),n(i,a+`down`,this._onMouseDown)},_onMouseDown:function(r){this.__onMouseDown(r),this._resetTransformEventData();var i=this.upperCanvasEl,a=this._getEventPrefix();n(i,a+`move`,this._onMouseMove,o),e(t.document,a+`up`,this._onMouseUp),e(t.document,a+`move`,this._onMouseMove,o)},_onTouchEnd:function(r){if(!(r.touches.length>0)){this.__onMouseUp(r),this._resetTransformEventData(),this.mainTouchId=null;var i=this._getEventPrefix();n(t.document,`touchend`,this._onTouchEnd,o),n(t.document,`touchmove`,this._onMouseMove,o);var a=this;this._willAddMouseDown&&clearTimeout(this._willAddMouseDown),this._willAddMouseDown=setTimeout(function(){e(a.upperCanvasEl,i+`down`,a._onMouseDown),a._willAddMouseDown=0},400)}},_onMouseUp:function(r){this.__onMouseUp(r),this._resetTransformEventData();var i=this.upperCanvasEl,a=this._getEventPrefix();this._isMainEvent(r)&&(n(t.document,a+`up`,this._onMouseUp),n(t.document,a+`move`,this._onMouseMove,o),e(i,a+`move`,this._onMouseMove,o))},_onMouseMove:function(e){!this.allowTouchScrolling&&e.preventDefault&&e.preventDefault(),this.__onMouseMove(e)},_onResize:function(){this.calcOffset()},_shouldRender:function(e){var t=this._activeObject;return!!t!=!!e||t&&e&&t!==e?!0:(t&&t.isEditing,!1)},__onMouseUp:function(e){var n,o=this._currentTransform,c=this._groupSelector,l=!1,u=!c||c.left===0&&c.top===0;if(this._cacheTransformEventData(e),n=this._target,this._handleEvent(e,`up:before`),s(e,r)){this.fireRightClick&&this._handleEvent(e,`up`,r,u);return}if(s(e,i)){this.fireMiddleClick&&this._handleEvent(e,`up`,i,u),this._resetTransformEventData();return}if(this.isDrawingMode&&this._isCurrentlyDrawing){this._onMouseUpInDrawingMode(e);return}if(this._isMainEvent(e)){if(o&&(this._finalizeCurrentTransform(e),l=o.actionPerformed),!u){var d=n===this._activeObject;this._maybeGroupObjects(e),l||=this._shouldRender(n)||!d&&n===this._activeObject}var f,p;if(n){if(f=n._findTargetCorner(this.getPointer(e,!0),t.util.isTouchEvent(e)),n.selectable&&n!==this._activeObject&&n.activeOn===`up`)this.setActiveObject(n,e),l=!0;else{var m=n.controls[f],h=m&&m.getMouseUpHandler(e,n,m);h&&(p=this.getPointer(e),h(e,o,p.x,p.y))}n.isMoving=!1}if(o&&(o.target!==n||o.corner!==f)){var g=o.target&&o.target.controls[o.corner],_=g&&g.getMouseUpHandler(e,n,m);p||=this.getPointer(e),_&&_(e,o,p.x,p.y)}this._setCursorFromEvent(e,n),this._handleEvent(e,`up`,a,u),this._groupSelector=null,this._currentTransform=null,n&&(n.__corner=0),l?this.requestRenderAll():u||this.renderTop()}},_simpleEventHandler:function(e,t){var n=this.findTarget(t),r=this.targets,i={e:t,target:n,subTargets:r};if(this.fire(e,i),n&&n.fire(e,i),!r)return n;for(var a=0;a<r.length;a++)r[a].fire(e,i);return n},_handleEvent:function(e,t,n,r){var i=this._target,o=this.targets||[],s={e,target:i,subTargets:o,button:n||a,isClick:r||!1,pointer:this._pointer,absolutePointer:this._absolutePointer,transform:this._currentTransform};t===`up`&&(s.currentTarget=this.findTarget(e),s.currentSubTargets=this.targets),this.fire(`mouse:`+t,s),i&&i.fire(`mouse`+t,s);for(var c=0;c<o.length;c++)o[c].fire(`mouse`+t,s)},_finalizeCurrentTransform:function(e){var t=this._currentTransform,n=t.target,r={e,target:n,transform:t,action:t.action};n._scaling&&=!1,n.setCoords(),(t.actionPerformed||this.stateful&&n.hasStateChanged())&&this._fire(`modified`,r)},_onMouseDownInDrawingMode:function(e){this._isCurrentlyDrawing=!0,this.getActiveObject()&&this.discardActiveObject(e).requestRenderAll();var t=this.getPointer(e);this.freeDrawingBrush.onMouseDown(t,{e,pointer:t}),this._handleEvent(e,`down`)},_onMouseMoveInDrawingMode:function(e){if(this._isCurrentlyDrawing){var t=this.getPointer(e);this.freeDrawingBrush.onMouseMove(t,{e,pointer:t})}this.setCursor(this.freeDrawingCursor),this._handleEvent(e,`move`)},_onMouseUpInDrawingMode:function(e){var t=this.getPointer(e);this._isCurrentlyDrawing=this.freeDrawingBrush.onMouseUp({e,pointer:t}),this._handleEvent(e,`up`)},__onMouseDown:function(e){this._cacheTransformEventData(e),this._handleEvent(e,`down:before`);var n=this._target;if(s(e,r)){this.fireRightClick&&this._handleEvent(e,`down`,r);return}if(s(e,i)){this.fireMiddleClick&&this._handleEvent(e,`down`,i);return}if(this.isDrawingMode){this._onMouseDownInDrawingMode(e);return}if(this._isMainEvent(e)&&!this._currentTransform){var a=this._pointer;this._previousPointer=a;var o=this._shouldRender(n),c=this._shouldGroup(e,n);if(this._shouldClearSelection(e,n)?this.discardActiveObject(e):c&&(this._handleGrouping(e,n),n=this._activeObject),this.selection&&(!n||!n.selectable&&!n.isEditing&&n!==this._activeObject)&&(this._groupSelector={ex:this._absolutePointer.x,ey:this._absolutePointer.y,top:0,left:0}),n){var l=n===this._activeObject;n.selectable&&n.activeOn===`down`&&this.setActiveObject(n,e);var u=n._findTargetCorner(this.getPointer(e,!0),t.util.isTouchEvent(e));if(n.__corner=u,n===this._activeObject&&(u||!c)){this._setupCurrentTransform(e,n,l);var d=n.controls[u],a=this.getPointer(e),f=d&&d.getMouseDownHandler(e,n,d);f&&f(e,this._currentTransform,a.x,a.y)}}this._handleEvent(e,`down`),(o||c)&&this.requestRenderAll()}},_resetTransformEventData:function(){this._target=null,this._pointer=null,this._absolutePointer=null},_cacheTransformEventData:function(e){this._resetTransformEventData(),this._pointer=this.getPointer(e,!0),this._absolutePointer=this.restorePointerVpt(this._pointer),this._target=this._currentTransform?this._currentTransform.target:this.findTarget(e)||null},_beforeTransform:function(e){var t=this._currentTransform;this.stateful&&t.target.saveState(),this.fire(`before:transform`,{e,transform:t})},__onMouseMove:function(e){this._handleEvent(e,`move:before`),this._cacheTransformEventData(e);var t,n;if(this.isDrawingMode){this._onMouseMoveInDrawingMode(e);return}if(this._isMainEvent(e)){var r=this._groupSelector;r?(n=this._absolutePointer,r.left=n.x-r.ex,r.top=n.y-r.ey,this.renderTop()):this._currentTransform?this._transformObject(e):(t=this.findTarget(e)||null,this._setCursorFromEvent(e,t),this._fireOverOutEvents(t,e)),this._handleEvent(e,`move`),this._resetTransformEventData()}},_fireOverOutEvents:function(e,t){var n=this._hoveredTarget,r=this._hoveredTargets,i=this.targets,a=Math.max(r.length,i.length);this.fireSyntheticInOutEvents(e,t,{oldTarget:n,evtOut:`mouseout`,canvasEvtOut:`mouse:out`,evtIn:`mouseover`,canvasEvtIn:`mouse:over`});for(var o=0;o<a;o++)this.fireSyntheticInOutEvents(i[o],t,{oldTarget:r[o],evtOut:`mouseout`,evtIn:`mouseover`});this._hoveredTarget=e,this._hoveredTargets=this.targets.concat()},_fireEnterLeaveEvents:function(e,t){var n=this._draggedoverTarget,r=this._hoveredTargets,i=this.targets,a=Math.max(r.length,i.length);this.fireSyntheticInOutEvents(e,t,{oldTarget:n,evtOut:`dragleave`,evtIn:`dragenter`});for(var o=0;o<a;o++)this.fireSyntheticInOutEvents(i[o],t,{oldTarget:r[o],evtOut:`dragleave`,evtIn:`dragenter`});this._draggedoverTarget=e},fireSyntheticInOutEvents:function(e,t,n){var r,i,a=n.oldTarget,o,s,c=a!==e,l=n.canvasEvtIn,u=n.canvasEvtOut;c&&(r={e:t,target:e,previousTarget:a},i={e:t,target:a,nextTarget:e}),s=e&&c,o=a&&c,o&&(u&&this.fire(u,i),a.fire(n.evtOut,i)),s&&(l&&this.fire(l,r),e.fire(n.evtIn,r))},__onMouseWheel:function(e){this._cacheTransformEventData(e),this._handleEvent(e,`wheel`),this._resetTransformEventData()},_transformObject:function(e){var t=this.getPointer(e),n=this._currentTransform;n.reset=!1,n.shiftKey=e.shiftKey,n.altKey=e[this.centeredKey],this._performTransformAction(e,n,t),n.actionPerformed&&this.requestRenderAll()},_performTransformAction:function(e,t,n){var r=n.x,i=n.y,a=t.action,o=!1,s=t.actionHandler;s&&(o=s(e,t,r,i)),a===`drag`&&o&&(t.target.isMoving=!0,this.setCursor(t.target.moveCursor||this.moveCursor)),t.actionPerformed=t.actionPerformed||o},_fire:t.controlsUtils.fireEvent,_setCursorFromEvent:function(e,t){if(!t)return this.setCursor(this.defaultCursor),!1;var n=t.hoverCursor||this.hoverCursor,r=this._activeObject&&this._activeObject.type===`activeSelection`?this._activeObject:null,i=(!r||!r.contains(t))&&t._findTargetCorner(this.getPointer(e,!0));i?this.setCursor(this.getCornerCursor(i,t,e)):(t.subTargetCheck&&this.targets.concat().reverse().map(function(e){n=e.hoverCursor||n}),this.setCursor(n))},getCornerCursor:function(e,t,n){var r=t.controls[e];return r.cursorStyleHandler(n,r,t)}})})(),(function(){var e=Math.min,n=Math.max;t.util.object.extend(t.Canvas.prototype,{_shouldGroup:function(e,t){var n=this._activeObject;return n&&this._isSelectionKeyPressed(e)&&t&&t.selectable&&this.selection&&(n!==t||n.type===`activeSelection`)&&!t.onSelect({e})},_handleGrouping:function(e,t){var n=this._activeObject;n.__corner||t===n&&(t=this.findTarget(e,!0),!t||!t.selectable)||(n&&n.type===`activeSelection`?this._updateActiveSelection(t,e):this._createActiveSelection(t,e))},_updateActiveSelection:function(e,t){var n=this._activeObject,r=n._objects.slice(0);n.contains(e)?(n.removeWithUpdate(e),this._hoveredTarget=e,this._hoveredTargets=this.targets.concat(),n.size()===1&&this._setActiveObject(n.item(0),t)):(n.addWithUpdate(e),this._hoveredTarget=n,this._hoveredTargets=this.targets.concat()),this._fireSelectionEvents(r,t)},_createActiveSelection:function(e,t){var n=this.getActiveObjects(),r=this._createGroup(e);this._hoveredTarget=r,this._setActiveObject(r,t),this._fireSelectionEvents(n,t)},_createGroup:function(e){var n=this._objects,r=n.indexOf(this._activeObject)<n.indexOf(e)?[this._activeObject,e]:[e,this._activeObject];return this._activeObject.isEditing&&this._activeObject.exitEditing(),new t.ActiveSelection(r,{canvas:this})},_groupSelectedObjects:function(e){var n=this._collectObjects(e),r;n.length===1?this.setActiveObject(n[0],e):n.length>1&&(r=new t.ActiveSelection(n.reverse(),{canvas:this}),this.setActiveObject(r,e))},_collectObjects:function(r){for(var i=[],a,o=this._groupSelector.ex,s=this._groupSelector.ey,c=o+this._groupSelector.left,l=s+this._groupSelector.top,u=new t.Point(e(o,c),e(s,l)),d=new t.Point(n(o,c),n(s,l)),f=!this.selectionFullyContained,p=o===c&&s===l,m=this._objects.length;m--&&(a=this._objects[m],!(!(!a||!a.selectable||!a.visible)&&(f&&a.intersectsWithRect(u,d,!0)||a.isContainedWithinRect(u,d,!0)||f&&a.containsPoint(u,null,!0)||f&&a.containsPoint(d,null,!0))&&(i.push(a),p))););return i.length>1&&(i=i.filter(function(e){return!e.onSelect({e:r})})),i},_maybeGroupObjects:function(e){this.selection&&this._groupSelector&&this._groupSelectedObjects(e),this.setCursor(this.defaultCursor),this._groupSelector=null}})})(),(function(){t.util.object.extend(t.StaticCanvas.prototype,{toDataURL:function(e){e||={};var n=e.format||`png`,r=e.quality||1,i=(e.multiplier||1)*(e.enableRetinaScaling?this.getRetinaScaling():1),a=this.toCanvasElement(i,e);return t.util.toDataURL(a,n,r)},toCanvasElement:function(e,n){e||=1,n||={};var r=(n.width||this.width)*e,i=(n.height||this.height)*e,a=this.getZoom(),o=this.width,s=this.height,c=a*e,l=this.viewportTransform,u=(l[4]-(n.left||0))*e,d=(l[5]-(n.top||0))*e,f=this.interactive,p=[c,0,0,c,u,d],m=this.enableRetinaScaling,h=t.util.createCanvasElement(),g=this.contextTop;return h.width=r,h.height=i,this.contextTop=null,this.enableRetinaScaling=!1,this.interactive=!1,this.viewportTransform=p,this.width=r,this.height=i,this.calcViewportBoundaries(),this.renderCanvas(h.getContext(`2d`),this._objects),this.viewportTransform=l,this.width=o,this.height=s,this.calcViewportBoundaries(),this.interactive=f,this.enableRetinaScaling=m,this.contextTop=g,h}})})(),t.util.object.extend(t.StaticCanvas.prototype,{loadFromJSON:function(e,n,r){if(e){var i=typeof e==`string`?JSON.parse(e):t.util.object.clone(e),a=this,o=i.clipPath,s=this.renderOnAddRemove;return this.renderOnAddRemove=!1,delete i.clipPath,this._enlivenObjects(i.objects,function(e){a.clear(),a._setBgOverlay(i,function(){o?a._enlivenObjects([o],function(t){a.clipPath=t[0],a.__setupCanvas.call(a,i,e,s,n)}):a.__setupCanvas.call(a,i,e,s,n)})},r),this}},__setupCanvas:function(e,t,n,r){var i=this;t.forEach(function(e,t){i.insertAt(e,t)}),this.renderOnAddRemove=n,delete e.objects,delete e.backgroundImage,delete e.overlayImage,delete e.background,delete e.overlay,this._setOptions(e),this.renderAll(),r&&r()},_setBgOverlay:function(e,t){var n={backgroundColor:!1,overlayColor:!1,backgroundImage:!1,overlayImage:!1};if(!e.backgroundImage&&!e.overlayImage&&!e.background&&!e.overlay){t&&t();return}var r=function(){n.backgroundImage&&n.overlayImage&&n.backgroundColor&&n.overlayColor&&t&&t()};this.__setBgOverlay(`backgroundImage`,e.backgroundImage,n,r),this.__setBgOverlay(`overlayImage`,e.overlayImage,n,r),this.__setBgOverlay(`backgroundColor`,e.background,n,r),this.__setBgOverlay(`overlayColor`,e.overlay,n,r)},__setBgOverlay:function(e,n,r,i){var a=this;if(!n){r[e]=!0,i&&i();return}e===`backgroundImage`||e===`overlayImage`?t.util.enlivenObjects([n],function(t){a[e]=t[0],r[e]=!0,i&&i()}):this[`set`+t.util.string.capitalize(e,!0)](n,function(){r[e]=!0,i&&i()})},_enlivenObjects:function(e,n,r){if(!e||e.length===0){n&&n([]);return}t.util.enlivenObjects(e,function(e){n&&n(e)},null,r)},_toDataURL:function(e,t){this.clone(function(n){t(n.toDataURL(e))})},_toDataURLWithMultiplier:function(e,t,n){this.clone(function(r){n(r.toDataURLWithMultiplier(e,t))})},clone:function(e,t){var n=JSON.stringify(this.toJSON(t));this.cloneWithoutData(function(t){t.loadFromJSON(n,function(){e&&e(t)})})},cloneWithoutData:function(e){var n=t.util.createCanvasElement();n.width=this.width,n.height=this.height;var r=new t.Canvas(n);this.backgroundImage?(r.setBackgroundImage(this.backgroundImage.src,function(){r.renderAll(),e&&e(r)}),r.backgroundImageOpacity=this.backgroundImageOpacity,r.backgroundImageStretch=this.backgroundImageStretch):e&&e(r)}}),(function(e){var t=e.fabric||={},n=t.util.object.extend,r=t.util.object.clone,i=t.util.toFixed,a=t.util.string.capitalize,o=t.util.degreesToRadians,s=!t.isLikelyNode,c=2;t.Object||(t.Object=t.util.createClass(t.CommonMethods,{type:`object`,originX:`left`,originY:`top`,top:0,left:0,width:0,height:0,scaleX:1,scaleY:1,flipX:!1,flipY:!1,opacity:1,angle:0,skewX:0,skewY:0,cornerSize:13,touchCornerSize:24,transparentCorners:!0,hoverCursor:null,moveCursor:null,padding:0,borderColor:`rgb(178,204,255)`,borderDashArray:null,cornerColor:`rgb(178,204,255)`,cornerStrokeColor:null,cornerStyle:`rect`,cornerDashArray:null,centeredScaling:!1,centeredRotation:!0,fill:`rgb(0,0,0)`,fillRule:`nonzero`,globalCompositeOperation:`source-over`,backgroundColor:``,selectionBackgroundColor:``,stroke:null,strokeWidth:1,strokeDashArray:null,strokeDashOffset:0,strokeLineCap:`butt`,strokeLineJoin:`miter`,strokeMiterLimit:4,shadow:null,borderOpacityWhenMoving:.4,borderScaleFactor:1,minScaleLimit:0,selectable:!0,evented:!0,visible:!0,hasControls:!0,hasBorders:!0,perPixelTargetFind:!1,includeDefaultValues:!0,lockMovementX:!1,lockMovementY:!1,lockRotation:!1,lockScalingX:!1,lockScalingY:!1,lockSkewingX:!1,lockSkewingY:!1,lockScalingFlip:!1,excludeFromExport:!1,objectCaching:s,statefullCache:!1,noScaleCache:!0,strokeUniform:!1,dirty:!0,__corner:0,paintFirst:`fill`,activeOn:`down`,stateProperties:`top left width height scaleX scaleY flipX flipY originX originY transformMatrix stroke strokeWidth strokeDashArray strokeLineCap strokeDashOffset strokeLineJoin strokeMiterLimit angle opacity fill globalCompositeOperation shadow visible backgroundColor skewX skewY fillRule paintFirst clipPath strokeUniform`.split(` `),cacheProperties:`fill stroke strokeWidth strokeDashArray width height paintFirst strokeUniform strokeLineCap strokeDashOffset strokeLineJoin strokeMiterLimit backgroundColor clipPath`.split(` `),colorProperties:`fill stroke backgroundColor`.split(` `),clipPath:void 0,inverted:!1,absolutePositioned:!1,initialize:function(e){e&&this.setOptions(e)},_createCacheCanvas:function(){this._cacheProperties={},this._cacheCanvas=t.util.createCanvasElement(),this._cacheContext=this._cacheCanvas.getContext(`2d`),this._updateCacheCanvas(),this.dirty=!0},_limitCacheSize:function(e){var n=t.perfLimitSizeTotal,r=e.width,i=e.height,a=t.maxCacheSideLimit,o=t.minCacheSideLimit;if(r<=a&&i<=a&&r*i<=n)return r<o&&(e.width=o),i<o&&(e.height=o),e;var s=r/i,c=t.util.limitDimsByArea(s,n),l=t.util.capValue,u=l(o,c.x,a),d=l(o,c.y,a);return r>u&&(e.zoomX/=r/u,e.width=u,e.capped=!0),i>d&&(e.zoomY/=i/d,e.height=d,e.capped=!0),e},_getCacheCanvasDimensions:function(){var e=this.getTotalObjectScaling(),t=this._getTransformedDimensions(0,0),n=t.x*e.scaleX/this.scaleX,r=t.y*e.scaleY/this.scaleY;return{width:Math.ceil(n+c),height:Math.ceil(r+c),zoomX:e.scaleX,zoomY:e.scaleY,x:n,y:r}},_updateCacheCanvas:function(){var e=this.canvas;if(this.noScaleCache&&e&&e._currentTransform){var t=e._currentTransform.target,n=e._currentTransform.action;if(this===t&&n.slice&&n.slice(0,5)===`scale`)return!1}var r=this._cacheCanvas,i=this._limitCacheSize(this._getCacheCanvasDimensions()),a=i.width,o=i.height,s,c,l=i.zoomX,u=i.zoomY,d=a!==this.cacheWidth||o!==this.cacheHeight,f=this.zoomX!==l||this.zoomY!==u;return d||f?(d?(r.width=a,r.height=o):(this._cacheContext.setTransform(1,0,0,1,0,0),this._cacheContext.clearRect(0,0,r.width,r.height)),s=i.x/2,c=i.y/2,this.cacheTranslationX=Math.round(r.width/2-s)+s,this.cacheTranslationY=Math.round(r.height/2-c)+c,this.cacheWidth=a,this.cacheHeight=o,this._cacheContext.translate(this.cacheTranslationX,this.cacheTranslationY),this._cacheContext.scale(l,u),this.zoomX=l,this.zoomY=u,!0):!1},setOptions:function(e){this._setOptions(e),this._initGradient(e.fill,`fill`),this._initGradient(e.stroke,`stroke`),this._initPattern(e.fill,`fill`),this._initPattern(e.stroke,`stroke`)},transform:function(e){var t=this.group&&!this.group._transformDone||this.group&&this.canvas&&e===this.canvas.contextTop,n=this.calcTransformMatrix(!t);e.transform(n[0],n[1],n[2],n[3],n[4],n[5])},toObject:function(e){var n=t.Object.NUM_FRACTION_DIGITS,r={type:this.type,version:t.version,originX:this.originX,originY:this.originY,left:i(this.left,n),top:i(this.top,n),width:i(this.width,n),height:i(this.height,n),fill:this.fill&&this.fill.toObject?this.fill.toObject():this.fill,stroke:this.stroke&&this.stroke.toObject?this.stroke.toObject():this.stroke,strokeWidth:i(this.strokeWidth,n),strokeDashArray:this.strokeDashArray?this.strokeDashArray.concat():this.strokeDashArray,strokeLineCap:this.strokeLineCap,strokeDashOffset:this.strokeDashOffset,strokeLineJoin:this.strokeLineJoin,strokeUniform:this.strokeUniform,strokeMiterLimit:i(this.strokeMiterLimit,n),scaleX:i(this.scaleX,n),scaleY:i(this.scaleY,n),angle:i(this.angle,n),flipX:this.flipX,flipY:this.flipY,opacity:i(this.opacity,n),shadow:this.shadow&&this.shadow.toObject?this.shadow.toObject():this.shadow,visible:this.visible,backgroundColor:this.backgroundColor,fillRule:this.fillRule,paintFirst:this.paintFirst,globalCompositeOperation:this.globalCompositeOperation,skewX:i(this.skewX,n),skewY:i(this.skewY,n)};return this.clipPath&&!this.clipPath.excludeFromExport&&(r.clipPath=this.clipPath.toObject(e),r.clipPath.inverted=this.clipPath.inverted,r.clipPath.absolutePositioned=this.clipPath.absolutePositioned),t.util.populateWithProperties(this,r,e),this.includeDefaultValues||(r=this._removeDefaultValues(r)),r},toDatalessObject:function(e){return this.toObject(e)},_removeDefaultValues:function(e){var n=t.util.getKlass(e.type).prototype;return n.stateProperties.forEach(function(t){t===`left`||t===`top`||(e[t]===n[t]&&delete e[t],Array.isArray(e[t])&&Array.isArray(n[t])&&e[t].length===0&&n[t].length===0&&delete e[t])}),e},toString:function(){return`#<fabric.`+a(this.type)+`>`},getObjectScaling:function(){if(!this.group)return{scaleX:this.scaleX,scaleY:this.scaleY};var e=t.util.qrDecompose(this.calcTransformMatrix());return{scaleX:Math.abs(e.scaleX),scaleY:Math.abs(e.scaleY)}},getTotalObjectScaling:function(){var e=this.getObjectScaling(),t=e.scaleX,n=e.scaleY;if(this.canvas){var r=this.canvas.getZoom(),i=this.canvas.getRetinaScaling();t*=r*i,n*=r*i}return{scaleX:t,scaleY:n}},getObjectOpacity:function(){var e=this.opacity;return this.group&&(e*=this.group.getObjectOpacity()),e},_set:function(e,n){var r=e===`scaleX`||e===`scaleY`,i=this[e]!==n,a=!1;return r&&(n=this._constrainScale(n)),e===`scaleX`&&n<0?(this.flipX=!this.flipX,n*=-1):e===`scaleY`&&n<0?(this.flipY=!this.flipY,n*=-1):e===`shadow`&&n&&!(n instanceof t.Shadow)?n=new t.Shadow(n):e===`dirty`&&this.group&&this.group.set(`dirty`,n),this[e]=n,i&&(a=this.group&&this.group.isOnACache(),this.cacheProperties.indexOf(e)>-1?(this.dirty=!0,a&&this.group.set(`dirty`,!0)):a&&this.stateProperties.indexOf(e)>-1&&this.group.set(`dirty`,!0)),this},setOnGroup:function(){},getViewportTransform:function(){return this.canvas&&this.canvas.viewportTransform?this.canvas.viewportTransform:t.iMatrix.concat()},isNotVisible:function(){return this.opacity===0||!this.width&&!this.height&&this.strokeWidth===0||!this.visible},render:function(e){this.isNotVisible()||this.canvas&&this.canvas.skipOffscreen&&!this.group&&!this.isOnScreen()||(e.save(),this._setupCompositeOperation(e),this.drawSelectionBackground(e),this.transform(e),this._setOpacity(e),this._setShadow(e,this),this.shouldCache()?(this.renderCache(),this.drawCacheOnCanvas(e)):(this._removeCacheCanvas(),this.dirty=!1,this.drawObject(e),this.objectCaching&&this.statefullCache&&this.saveState({propertySet:`cacheProperties`})),e.restore())},renderCache:function(e){e||={},(!this._cacheCanvas||!this._cacheContext)&&this._createCacheCanvas(),this.isCacheDirty()&&(this.statefullCache&&this.saveState({propertySet:`cacheProperties`}),this.drawObject(this._cacheContext,e.forClipping),this.dirty=!1)},_removeCacheCanvas:function(){this._cacheCanvas=null,this._cacheContext=null,this.cacheWidth=0,this.cacheHeight=0},hasStroke:function(){return this.stroke&&this.stroke!==`transparent`&&this.strokeWidth!==0},hasFill:function(){return this.fill&&this.fill!==`transparent`},needsItsOwnCache:function(){return!!(this.paintFirst===`stroke`&&this.hasFill()&&this.hasStroke()&&typeof this.shadow==`object`||this.clipPath)},shouldCache:function(){return this.ownCaching=this.needsItsOwnCache()||this.objectCaching&&(!this.group||!this.group.isOnACache()),this.ownCaching},willDrawShadow:function(){return!!this.shadow&&(this.shadow.offsetX!==0||this.shadow.offsetY!==0)},drawClipPathOnCache:function(e,n){if(e.save(),n.inverted?e.globalCompositeOperation=`destination-out`:e.globalCompositeOperation=`destination-in`,n.absolutePositioned){var r=t.util.invertTransform(this.calcTransformMatrix());e.transform(r[0],r[1],r[2],r[3],r[4],r[5])}n.transform(e),e.scale(1/n.zoomX,1/n.zoomY),e.drawImage(n._cacheCanvas,-n.cacheTranslationX,-n.cacheTranslationY),e.restore()},drawObject:function(e,t){var n=this.fill,r=this.stroke;t?(this.fill=`black`,this.stroke=``,this._setClippingProperties(e)):this._renderBackground(e),this._render(e),this._drawClipPath(e,this.clipPath),this.fill=n,this.stroke=r},_drawClipPath:function(e,t){t&&(t.canvas=this.canvas,t.shouldCache(),t._transformDone=!0,t.renderCache({forClipping:!0}),this.drawClipPathOnCache(e,t))},drawCacheOnCanvas:function(e){e.scale(1/this.zoomX,1/this.zoomY),e.drawImage(this._cacheCanvas,-this.cacheTranslationX,-this.cacheTranslationY)},isCacheDirty:function(e){if(this.isNotVisible())return!1;if(this._cacheCanvas&&this._cacheContext&&!e&&this._updateCacheCanvas())return!0;if(this.dirty||this.clipPath&&this.clipPath.absolutePositioned||this.statefullCache&&this.hasStateChanged(`cacheProperties`)){if(this._cacheCanvas&&this._cacheContext&&!e){var t=this.cacheWidth/this.zoomX,n=this.cacheHeight/this.zoomY;this._cacheContext.clearRect(-t/2,-n/2,t,n)}return!0}return!1},_renderBackground:function(e){if(this.backgroundColor){var t=this._getNonTransformedDimensions();e.fillStyle=this.backgroundColor,e.fillRect(-t.x/2,-t.y/2,t.x,t.y),this._removeShadow(e)}},_setOpacity:function(e){this.group&&!this.group._transformDone?e.globalAlpha=this.getObjectOpacity():e.globalAlpha*=this.opacity},_setStrokeStyles:function(e,t){var n=t.stroke;n&&(e.lineWidth=t.strokeWidth,e.lineCap=t.strokeLineCap,e.lineDashOffset=t.strokeDashOffset,e.lineJoin=t.strokeLineJoin,e.miterLimit=t.strokeMiterLimit,n.toLive?n.gradientUnits===`percentage`||n.gradientTransform||n.patternTransform?this._applyPatternForTransformedGradient(e,n):(e.strokeStyle=n.toLive(e,this),this._applyPatternGradientTransform(e,n)):e.strokeStyle=t.stroke)},_setFillStyles:function(e,t){var n=t.fill;n&&(n.toLive?(e.fillStyle=n.toLive(e,this),this._applyPatternGradientTransform(e,t.fill)):e.fillStyle=n)},_setClippingProperties:function(e){e.globalAlpha=1,e.strokeStyle=`transparent`,e.fillStyle=`#000000`},_setLineDash:function(e,t){!t||t.length===0||(1&t.length&&t.push.apply(t,t),e.setLineDash(t))},_renderControls:function(e,n){var r=this.getViewportTransform(),i=this.calcTransformMatrix(),a,s,c;n||={},s=n.hasBorders===void 0?this.hasBorders:n.hasBorders,c=n.hasControls===void 0?this.hasControls:n.hasControls,i=t.util.multiplyTransformMatrices(r,i),a=t.util.qrDecompose(i),e.save(),e.translate(a.translateX,a.translateY),e.lineWidth=1*this.borderScaleFactor,this.group||(e.globalAlpha=this.isMoving?this.borderOpacityWhenMoving:1),this.flipX&&(a.angle-=180),e.rotate(o(this.group?a.angle:this.angle)),n.forActiveSelection||this.group?s&&this.drawBordersInGroup(e,a,n):s&&this.drawBorders(e,n),c&&this.drawControls(e,n),e.restore()},_setShadow:function(e){if(this.shadow){var n=this.shadow,r=this.canvas,i,a=r&&r.viewportTransform[0]||1,o=r&&r.viewportTransform[3]||1;i=n.nonScaling?{scaleX:1,scaleY:1}:this.getObjectScaling(),r&&r._isRetinaScaling()&&(a*=t.devicePixelRatio,o*=t.devicePixelRatio),e.shadowColor=n.color,e.shadowBlur=n.blur*t.browserShadowBlurConstant*(a+o)*(i.scaleX+i.scaleY)/4,e.shadowOffsetX=n.offsetX*a*i.scaleX,e.shadowOffsetY=n.offsetY*o*i.scaleY}},_removeShadow:function(e){this.shadow&&(e.shadowColor=``,e.shadowBlur=e.shadowOffsetX=e.shadowOffsetY=0)},_applyPatternGradientTransform:function(e,t){if(!t||!t.toLive)return{offsetX:0,offsetY:0};var n=t.gradientTransform||t.patternTransform,r=-this.width/2+t.offsetX||0,i=-this.height/2+t.offsetY||0;return t.gradientUnits===`percentage`?e.transform(this.width,0,0,this.height,r,i):e.transform(1,0,0,1,r,i),n&&e.transform(n[0],n[1],n[2],n[3],n[4],n[5]),{offsetX:r,offsetY:i}},_renderPaintInOrder:function(e){this.paintFirst===`stroke`?(this._renderStroke(e),this._renderFill(e)):(this._renderFill(e),this._renderStroke(e))},_render:function(){},_renderFill:function(e){this.fill&&(e.save(),this._setFillStyles(e,this),this.fillRule===`evenodd`?e.fill(`evenodd`):e.fill(),e.restore())},_renderStroke:function(e){if(!(!this.stroke||this.strokeWidth===0)){if(this.shadow&&!this.shadow.affectStroke&&this._removeShadow(e),e.save(),this.strokeUniform&&this.group){var t=this.getObjectScaling();e.scale(1/t.scaleX,1/t.scaleY)}else this.strokeUniform&&e.scale(1/this.scaleX,1/this.scaleY);this._setLineDash(e,this.strokeDashArray),this._setStrokeStyles(e,this),e.stroke(),e.restore()}},_applyPatternForTransformedGradient:function(e,n){var r=this._limitCacheSize(this._getCacheCanvasDimensions()),i=t.util.createCanvasElement(),a,o=this.canvas.getRetinaScaling(),s=r.x/this.scaleX/o,c=r.y/this.scaleY/o;i.width=Math.ceil(s),i.height=Math.ceil(c),a=i.getContext(`2d`),a.beginPath(),a.moveTo(0,0),a.lineTo(s,0),a.lineTo(s,c),a.lineTo(0,c),a.closePath(),a.translate(s/2,c/2),a.scale(r.zoomX/this.scaleX/o,r.zoomY/this.scaleY/o),this._applyPatternGradientTransform(a,n),a.fillStyle=n.toLive(e),a.fill(),e.translate(-this.width/2-this.strokeWidth/2,-this.height/2-this.strokeWidth/2),e.scale(o*this.scaleX/r.zoomX,o*this.scaleY/r.zoomY),e.strokeStyle=a.createPattern(i,`no-repeat`)},_findCenterFromElement:function(){return{x:this.left+this.width/2,y:this.top+this.height/2}},_assignTransformMatrixProps:function(){if(this.transformMatrix){var e=t.util.qrDecompose(this.transformMatrix);this.flipX=!1,this.flipY=!1,this.set(`scaleX`,e.scaleX),this.set(`scaleY`,e.scaleY),this.angle=e.angle,this.skewX=e.skewX,this.skewY=0}},_removeTransformMatrix:function(e){var n=this._findCenterFromElement();this.transformMatrix&&(this._assignTransformMatrixProps(),n=t.util.transformPoint(n,this.transformMatrix)),this.transformMatrix=null,e&&(this.scaleX*=e.scaleX,this.scaleY*=e.scaleY,this.cropX=e.cropX,this.cropY=e.cropY,n.x+=e.offsetLeft,n.y+=e.offsetTop,this.width=e.width,this.height=e.height),this.setPositionByOrigin(n,`center`,`center`)},clone:function(e,n){var r=this.toObject(n);this.constructor.fromObject?this.constructor.fromObject(r,e):t.Object._fromObject(`Object`,r,e)},cloneAsImage:function(e,n){var r=this.toCanvasElement(n);return e&&e(new t.Image(r)),this},toCanvasElement:function(e){e||={};var n=t.util,r=n.saveObjectTransform(this),i=this.group,a=this.shadow,o=Math.abs,s=(e.multiplier||1)*(e.enableRetinaScaling?t.devicePixelRatio:1);delete this.group,e.withoutTransform&&n.resetObjectTransform(this),e.withoutShadow&&(this.shadow=null);var c=t.util.createCanvasElement(),l=this.getBoundingRect(!0,!0),u=this.shadow,d,f={x:0,y:0},p,m,h;u&&(p=u.blur,d=u.nonScaling?{scaleX:1,scaleY:1}:this.getObjectScaling(),f.x=2*Math.round(o(u.offsetX)+p)*o(d.scaleX),f.y=2*Math.round(o(u.offsetY)+p)*o(d.scaleY)),m=l.width+f.x,h=l.height+f.y,c.width=Math.ceil(m),c.height=Math.ceil(h);var g=new t.StaticCanvas(c,{enableRetinaScaling:!1,renderOnAddRemove:!1,skipOffscreen:!1});e.format===`jpeg`&&(g.backgroundColor=`#fff`),this.setPositionByOrigin(new t.Point(g.width/2,g.height/2),`center`,`center`);var _=this.canvas;g.add(this);var v=g.toCanvasElement(s||1,e);return this.shadow=a,this.set(`canvas`,_),i&&(this.group=i),this.set(r).setCoords(),g._objects=[],g.dispose(),g=null,v},toDataURL:function(e){return e||={},t.util.toDataURL(this.toCanvasElement(e),e.format||`png`,e.quality||1)},isType:function(e){return arguments.length>1?Array.from(arguments).includes(this.type):this.type===e},complexity:function(){return 1},toJSON:function(e){return this.toObject(e)},rotate:function(e){var t=(this.originX!==`center`||this.originY!==`center`)&&this.centeredRotation;return t&&this._setOriginToCenter(),this.set(`angle`,e),t&&this._resetOrigin(),this},centerH:function(){return this.canvas&&this.canvas.centerObjectH(this),this},viewportCenterH:function(){return this.canvas&&this.canvas.viewportCenterObjectH(this),this},centerV:function(){return this.canvas&&this.canvas.centerObjectV(this),this},viewportCenterV:function(){return this.canvas&&this.canvas.viewportCenterObjectV(this),this},center:function(){return this.canvas&&this.canvas.centerObject(this),this},viewportCenter:function(){return this.canvas&&this.canvas.viewportCenterObject(this),this},getLocalPointer:function(e,n){n||=this.canvas.getPointer(e);var r=new t.Point(n.x,n.y),i=this._getLeftTopCoords();return this.angle&&(r=t.util.rotatePoint(r,i,o(-this.angle))),{x:r.x-i.x,y:r.y-i.y}},_setupCompositeOperation:function(e){this.globalCompositeOperation&&(e.globalCompositeOperation=this.globalCompositeOperation)},dispose:function(){t.runningAnimations&&t.runningAnimations.cancelByTarget(this)}}),t.util.createAccessors&&t.util.createAccessors(t.Object),n(t.Object.prototype,t.Observable),t.Object.NUM_FRACTION_DIGITS=2,t.Object.ENLIVEN_PROPS=[`clipPath`],t.Object._fromObject=function(e,n,i,a){var o=t[e];n=r(n,!0),t.util.enlivenPatterns([n.fill,n.stroke],function(e){e[0]!==void 0&&(n.fill=e[0]),e[1]!==void 0&&(n.stroke=e[1]),t.util.enlivenObjectEnlivables(n,n,function(){var e=a?new o(n[a],n):new o(n);i&&i(e)})})},t.Object.__uid=0)})(e),(function(){var e=t.util.degreesToRadians,n={left:-.5,center:0,right:.5},r={top:-.5,center:0,bottom:.5};t.util.object.extend(t.Object.prototype,{translateToGivenOrigin:function(e,i,a,o,s){var c=e.x,l=e.y,u,d,f;return typeof i==`string`?i=n[i]:i-=.5,typeof o==`string`?o=n[o]:o-=.5,u=o-i,typeof a==`string`?a=r[a]:a-=.5,typeof s==`string`?s=r[s]:s-=.5,d=s-a,(u||d)&&(f=this._getTransformedDimensions(),c=e.x+u*f.x,l=e.y+d*f.y),new t.Point(c,l)},translateToCenterPoint:function(n,r,i){var a=this.translateToGivenOrigin(n,r,i,`center`,`center`);return this.angle?t.util.rotatePoint(a,n,e(this.angle)):a},translateToOriginPoint:function(n,r,i){var a=this.translateToGivenOrigin(n,`center`,`center`,r,i);return this.angle?t.util.rotatePoint(a,n,e(this.angle)):a},getCenterPoint:function(){var e=new t.Point(this.left,this.top);return this.translateToCenterPoint(e,this.originX,this.originY)},getPointByOrigin:function(e,t){var n=this.getCenterPoint();return this.translateToOriginPoint(n,e,t)},toLocalPoint:function(n,r,i){var a=this.getCenterPoint(),o=r!==void 0&&i!==void 0?this.translateToGivenOrigin(a,`center`,`center`,r,i):new t.Point(this.left,this.top),s=new t.Point(n.x,n.y);return this.angle&&(s=t.util.rotatePoint(s,a,-e(this.angle))),s.subtractEquals(o)},setPositionByOrigin:function(e,t,n){var r=this.translateToCenterPoint(e,t,n),i=this.translateToOriginPoint(r,this.originX,this.originY);this.set(`left`,i.x),this.set(`top`,i.y)},adjustPosition:function(r){var i=e(this.angle),a=this.getScaledWidth(),o=t.util.cos(i)*a,s=t.util.sin(i)*a,c=typeof this.originX==`string`?n[this.originX]:this.originX-.5,l=typeof r==`string`?n[r]:r-.5;this.left+=o*(l-c),this.top+=s*(l-c),this.setCoords(),this.originX=r},_setOriginToCenter:function(){this._originalOriginX=this.originX,this._originalOriginY=this.originY;var e=this.getCenterPoint();this.originX=`center`,this.originY=`center`,this.left=e.x,this.top=e.y},_resetOrigin:function(){var e=this.translateToOriginPoint(this.getCenterPoint(),this._originalOriginX,this._originalOriginY);this.originX=this._originalOriginX,this.originY=this._originalOriginY,this.left=e.x,this.top=e.y,this._originalOriginX=null,this._originalOriginY=null},_getLeftTopCoords:function(){return this.translateToOriginPoint(this.getCenterPoint(),`left`,`top`)}})})(),(function(){function e(e){return[new t.Point(e.tl.x,e.tl.y),new t.Point(e.tr.x,e.tr.y),new t.Point(e.br.x,e.br.y),new t.Point(e.bl.x,e.bl.y)]}var n=t.util,r=n.degreesToRadians,i=n.multiplyTransformMatrices,a=n.transformPoint;n.object.extend(t.Object.prototype,{oCoords:null,aCoords:null,lineCoords:null,ownMatrixCache:null,matrixCache:null,controls:{},_getCoords:function(e,t){return t?e?this.calcACoords():this.calcLineCoords():((!this.aCoords||!this.lineCoords)&&this.setCoords(!0),e?this.aCoords:this.lineCoords)},getCoords:function(t,n){return e(this._getCoords(t,n))},intersectsWithRect:function(e,n,r,i){var a=this.getCoords(r,i);return t.Intersection.intersectPolygonRectangle(a,e,n).status===`Intersection`},intersectsWithObject:function(e,n,r){return t.Intersection.intersectPolygonPolygon(this.getCoords(n,r),e.getCoords(n,r)).status===`Intersection`||e.isContainedWithinObject(this,n,r)||this.isContainedWithinObject(e,n,r)},isContainedWithinObject:function(e,t,n){for(var r=this.getCoords(t,n),i=t?e.aCoords:e.lineCoords,a=0,o=e._getImageLines(i);a<4;a++)if(!e.containsPoint(r[a],o))return!1;return!0},isContainedWithinRect:function(e,t,n,r){var i=this.getBoundingRect(n,r);return i.left>=e.x&&i.left+i.width<=t.x&&i.top>=e.y&&i.top+i.height<=t.y},containsPoint:function(e,t,n,r){var i=this._getCoords(n,r),t=t||this._getImageLines(i),a=this._findCrossPoints(e,t);return a!==0&&a%2==1},isOnScreen:function(e){if(!this.canvas)return!1;var t=this.canvas.vptCoords.tl,n=this.canvas.vptCoords.br;return this.getCoords(!0,e).some(function(e){return e.x<=n.x&&e.x>=t.x&&e.y<=n.y&&e.y>=t.y})||this.intersectsWithRect(t,n,!0,e)?!0:this._containsCenterOfCanvas(t,n,e)},_containsCenterOfCanvas:function(e,t,n){var r={x:(e.x+t.x)/2,y:(e.y+t.y)/2};return!!this.containsPoint(r,null,!0,n)},isPartiallyOnScreen:function(e){if(!this.canvas)return!1;var t=this.canvas.vptCoords.tl,n=this.canvas.vptCoords.br;return this.intersectsWithRect(t,n,!0,e)?!0:this.getCoords(!0,e).every(function(e){return(e.x>=n.x||e.x<=t.x)&&(e.y>=n.y||e.y<=t.y)})&&this._containsCenterOfCanvas(t,n,e)},_getImageLines:function(e){return{topline:{o:e.tl,d:e.tr},rightline:{o:e.tr,d:e.br},bottomline:{o:e.br,d:e.bl},leftline:{o:e.bl,d:e.tl}}},_findCrossPoints:function(e,t){var n,r,i,a,o,s=0,c;for(var l in t)if(c=t[l],!(c.o.y<e.y&&c.d.y<e.y)&&!(c.o.y>=e.y&&c.d.y>=e.y)&&(c.o.x===c.d.x&&c.o.x>=e.x?o=c.o.x:(n=0,r=(c.d.y-c.o.y)/(c.d.x-c.o.x),i=e.y-n*e.x,a=c.o.y-r*c.o.x,o=-(i-a)/(n-r)),o>=e.x&&(s+=1),s===2))break;return s},getBoundingRect:function(e,t){var r=this.getCoords(e,t);return n.makeBoundingBoxFromPoints(r)},getScaledWidth:function(){return this._getTransformedDimensions().x},getScaledHeight:function(){return this._getTransformedDimensions().y},_constrainScale:function(e){return Math.abs(e)<this.minScaleLimit?e<0?-this.minScaleLimit:this.minScaleLimit:e===0?1e-4:e},scale:function(e){return this._set(`scaleX`,e),this._set(`scaleY`,e),this.setCoords()},scaleToWidth:function(e,t){var n=this.getBoundingRect(t).width/this.getScaledWidth();return this.scale(e/this.width/n)},scaleToHeight:function(e,t){var n=this.getBoundingRect(t).height/this.getScaledHeight();return this.scale(e/this.height/n)},calcLineCoords:function(){var e=this.getViewportTransform(),t=this.padding,i=r(this.angle),o=n.cos(i),s=n.sin(i),c=o*t,l=s*t,u=c+l,d=c-l,f=this.calcACoords(),p={tl:a(f.tl,e),tr:a(f.tr,e),bl:a(f.bl,e),br:a(f.br,e)};return t&&(p.tl.x-=d,p.tl.y-=u,p.tr.x+=u,p.tr.y-=d,p.bl.x-=u,p.bl.y+=d,p.br.x+=d,p.br.y+=u),p},calcOCoords:function(){var e=this._calcRotateMatrix(),t=this._calcTranslateMatrix(),n=this.getViewportTransform(),r=i(i(n,t),e),r=i(r,[1/n[0],0,0,1/n[3],0,0]),a=this._calculateCurrentDimensions(),o={};return this.forEachControl(function(e,t,n){o[t]=e.positionHandler(a,r,n)}),o},calcACoords:function(){var e=this._calcRotateMatrix(),t=i(this._calcTranslateMatrix(),e),n=this._getTransformedDimensions(),r=n.x/2,o=n.y/2;return{tl:a({x:-r,y:-o},t),tr:a({x:r,y:-o},t),bl:a({x:-r,y:o},t),br:a({x:r,y:o},t)}},setCoords:function(e){return this.aCoords=this.calcACoords(),this.lineCoords=this.group?this.aCoords:this.calcLineCoords(),e?this:(this.oCoords=this.calcOCoords(),this._setCornerCoords&&this._setCornerCoords(),this)},_calcRotateMatrix:function(){return n.calcRotateMatrix(this)},_calcTranslateMatrix:function(){var e=this.getCenterPoint();return[1,0,0,1,e.x,e.y]},transformMatrixKey:function(e){var t=`_`,n=``;return!e&&this.group&&(n=this.group.transformMatrixKey(e)+t),n+this.top+t+this.left+t+this.scaleX+t+this.scaleY+t+this.skewX+t+this.skewY+t+this.angle+t+this.originX+t+this.originY+t+this.width+t+this.height+t+this.strokeWidth+this.flipX+this.flipY},calcTransformMatrix:function(e){var t=this.calcOwnMatrix();if(e||!this.group)return t;var n=this.transformMatrixKey(e),r=this.matrixCache||={};return r.key===n?r.value:(this.group&&(t=i(this.group.calcTransformMatrix(!1),t)),r.key=n,r.value=t,t)},calcOwnMatrix:function(){var e=this.transformMatrixKey(!0),t=this.ownMatrixCache||={};if(t.key===e)return t.value;var r=this._calcTranslateMatrix(),i={angle:this.angle,translateX:r[4],translateY:r[5],scaleX:this.scaleX,scaleY:this.scaleY,skewX:this.skewX,skewY:this.skewY,flipX:this.flipX,flipY:this.flipY};return t.key=e,t.value=n.composeMatrix(i),t.value},_getNonTransformedDimensions:function(){var e=this.strokeWidth;return{x:this.width+e,y:this.height+e}},_getTransformedDimensions:function(e,t){e===void 0&&(e=this.skewX),t===void 0&&(t=this.skewY);var r,i,a,o=e===0&&t===0;if(this.strokeUniform?(i=this.width,a=this.height):(r=this._getNonTransformedDimensions(),i=r.x,a=r.y),o)return this._finalizeDimensions(i*this.scaleX,a*this.scaleY);var s=n.sizeAfterTransform(i,a,{scaleX:this.scaleX,scaleY:this.scaleY,skewX:e,skewY:t});return this._finalizeDimensions(s.x,s.y)},_finalizeDimensions:function(e,t){return this.strokeUniform?{x:e+this.strokeWidth,y:t+this.strokeWidth}:{x:e,y:t}},_calculateCurrentDimensions:function(){var e=this.getViewportTransform();return a(this._getTransformedDimensions(),e,!0).scalarAdd(2*this.padding)}})})(),t.util.object.extend(t.Object.prototype,{sendToBack:function(){return this.group?t.StaticCanvas.prototype.sendToBack.call(this.group,this):this.canvas&&this.canvas.sendToBack(this),this},bringToFront:function(){return this.group?t.StaticCanvas.prototype.bringToFront.call(this.group,this):this.canvas&&this.canvas.bringToFront(this),this},sendBackwards:function(e){return this.group?t.StaticCanvas.prototype.sendBackwards.call(this.group,this,e):this.canvas&&this.canvas.sendBackwards(this,e),this},bringForward:function(e){return this.group?t.StaticCanvas.prototype.bringForward.call(this.group,this,e):this.canvas&&this.canvas.bringForward(this,e),this},moveTo:function(e){return this.group&&this.group.type!==`activeSelection`?t.StaticCanvas.prototype.moveTo.call(this.group,this,e):this.canvas&&this.canvas.moveTo(this,e),this}}),(function(){function e(e,n){if(!n)return e+`: none; `;if(n.toLive)return e+`: url(#SVGID_`+n.id+`); `;var r=new t.Color(n),i=e+`: `+r.toRgb()+`; `,a=r.getAlpha();return a!==1&&(i+=e+`-opacity: `+a.toString()+`; `),i}var n=t.util.toFixed;t.util.object.extend(t.Object.prototype,{getSvgStyles:function(t){var n=this.fillRule?this.fillRule:`nonzero`,r=this.strokeWidth?this.strokeWidth:`0`,i=this.strokeDashArray?this.strokeDashArray.join(` `):`none`,a=this.strokeDashOffset?this.strokeDashOffset:`0`,o=this.strokeLineCap?this.strokeLineCap:`butt`,s=this.strokeLineJoin?this.strokeLineJoin:`miter`,c=this.strokeMiterLimit?this.strokeMiterLimit:`4`,l=this.opacity===void 0?`1`:this.opacity,u=this.visible?``:` visibility: hidden;`,d=t?``:this.getSvgFilter(),f=e(`fill`,this.fill);return[e(`stroke`,this.stroke),`stroke-width: `,r,`; `,`stroke-dasharray: `,i,`; `,`stroke-linecap: `,o,`; `,`stroke-dashoffset: `,a,`; `,`stroke-linejoin: `,s,`; `,`stroke-miterlimit: `,c,`; `,f,`fill-rule: `,n,`; `,`opacity: `,l,`;`,d,u].join(``)},getSvgSpanStyles:function(t,n){var r=`; `,i=t.fontFamily?`font-family: `+(t.fontFamily.indexOf(`'`)===-1&&t.fontFamily.indexOf(`"`)===-1?`'`+t.fontFamily+`'`:t.fontFamily)+r:``,a=t.strokeWidth?`stroke-width: `+t.strokeWidth+r:``,i=i,o=t.fontSize?`font-size: `+t.fontSize+`px`+r:``,s=t.fontStyle?`font-style: `+t.fontStyle+r:``,c=t.fontWeight?`font-weight: `+t.fontWeight+r:``,l=t.fill?e(`fill`,t.fill):``,u=t.stroke?e(`stroke`,t.stroke):``,d=this.getSvgTextDecoration(t),f=t.deltaY?`baseline-shift: `+-t.deltaY+`; `:``;return d&&=`text-decoration: `+d+r,[u,a,i,o,s,c,d,l,f,n?`white-space: pre; `:``].join(``)},getSvgTextDecoration:function(e){return[`overline`,`underline`,`line-through`].filter(function(t){return e[t.replace(`-`,``)]}).join(` `)},getSvgFilter:function(){return this.shadow?`filter: url(#SVGID_`+this.shadow.id+`);`:``},getSvgCommons:function(){return[this.id?`id="`+this.id+`" `:``,this.clipPath?`clip-path="url(#`+this.clipPath.clipPathId+`)" `:``].join(``)},getSvgTransform:function(e,n){var r=e?this.calcTransformMatrix():this.calcOwnMatrix();return`transform="`+t.util.matrixToSVG(r)+(n||``)+`" `},_setSVGBg:function(e){if(this.backgroundColor){var r=t.Object.NUM_FRACTION_DIGITS;e.push(`		<rect `,this._getFillAttributes(this.backgroundColor),` x="`,n(-this.width/2,r),`" y="`,n(-this.height/2,r),`" width="`,n(this.width,r),`" height="`,n(this.height,r),`"></rect>
-`)}},toSVG:function(e){return this._createBaseSVGMarkup(this._toSVG(e),{reviver:e})},toClipPathSVG:function(e){return`	`+this._createBaseClipPathSVGMarkup(this._toSVG(e),{reviver:e})},_createBaseClipPathSVGMarkup:function(e,t){t||={};var n=t.reviver,r=t.additionalTransform||``,i=[this.getSvgTransform(!0,r),this.getSvgCommons()].join(``),a=e.indexOf(`COMMON_PARTS`);return e[a]=i,n?n(e.join(``)):e.join(``)},_createBaseSVGMarkup:function(e,n){n||={};var r=n.noStyle,i=n.reviver,a=r?``:`style="`+this.getSvgStyles()+`" `,o=n.withShadow?`style="`+this.getSvgFilter()+`" `:``,s=this.clipPath,c=this.strokeUniform?`vector-effect="non-scaling-stroke" `:``,l=s&&s.absolutePositioned,u=this.stroke,d=this.fill,f=this.shadow,p,m=[],h,g=e.indexOf(`COMMON_PARTS`),_=n.additionalTransform;return s&&(s.clipPathId=`CLIPPATH_`+ t.Object.__uid++,h=`<clipPath id="`+s.clipPathId+`" >
-`+s.toClipPathSVG(i)+`</clipPath>
-`),l&&m.push(`<g `,o,this.getSvgCommons(),` >
-`),m.push(`<g `,this.getSvgTransform(!1),l?``:o+this.getSvgCommons(),` >
-`),p=[a,c,r?``:this.addPaintOrder(),` `,_?`transform="`+_+`" `:``].join(``),e[g]=p,d&&d.toLive&&m.push(d.toSVG(this)),u&&u.toLive&&m.push(u.toSVG(this)),f&&m.push(f.toSVG(this)),s&&m.push(h),m.push(e.join(``)),m.push(`</g>
-`),l&&m.push(`</g>
-`),i?i(m.join(``)):m.join(``)},addPaintOrder:function(){return this.paintFirst===`fill`?``:` paint-order="`+this.paintFirst+`" `}})})(),(function(){var e=t.util.object.extend,n=`stateProperties`;function r(t,n,r){var i={};r.forEach(function(e){i[e]=t[e]}),e(t[n],i,!0)}function i(e,t,n){if(e===t)return!0;if(Array.isArray(e)){if(!Array.isArray(t)||e.length!==t.length)return!1;for(var r=0,a=e.length;r<a;r++)if(!i(e[r],t[r]))return!1;return!0}else if(e&&typeof e==`object`){var o=Object.keys(e),s;if(!t||typeof t!=`object`||!n&&o.length!==Object.keys(t).length)return!1;for(var r=0,a=o.length;r<a;r++)if(s=o[r],!(s===`canvas`||s===`group`)&&!i(e[s],t[s]))return!1;return!0}}t.util.object.extend(t.Object.prototype,{hasStateChanged:function(e){e||=n;var t=`_`+e;return Object.keys(this[t]).length<this[e].length?!0:!i(this[t],this,!0)},saveState:function(e){var t=e&&e.propertySet||n,i=`_`+t;return this[i]?(r(this,i,this[t]),e&&e.stateProperties&&r(this,i,e.stateProperties),this):this.setupState(e)},setupState:function(e){e||={};var t=e.propertySet||n;return e.propertySet=t,this[`_`+t]={},this.saveState(e),this}})})(),(function(){var e=t.util.degreesToRadians;t.util.object.extend(t.Object.prototype,{_findTargetCorner:function(e,t){if(!this.hasControls||this.group||!this.canvas||this.canvas._activeObject!==this)return!1;var n=e.x,r=e.y,i,a,o=Object.keys(this.oCoords),s=o.length-1,c;for(this.__corner=0;s>=0;s--)if(c=o[s],this.isControlVisible(c)&&(a=this._getImageLines(t?this.oCoords[c].touchCorner:this.oCoords[c].corner),i=this._findCrossPoints({x:n,y:r},a),i!==0&&i%2==1))return this.__corner=c,c;return!1},forEachControl:function(e){for(var t in this.controls)e(this.controls[t],t,this)},_setCornerCoords:function(){var e=this.oCoords;for(var t in e){var n=this.controls[t];e[t].corner=n.calcCornerCoords(this.angle,this.cornerSize,e[t].x,e[t].y,!1),e[t].touchCorner=n.calcCornerCoords(this.angle,this.touchCornerSize,e[t].x,e[t].y,!0)}},drawSelectionBackground:function(t){if(!this.selectionBackgroundColor||this.canvas&&!this.canvas.interactive||this.canvas&&this.canvas._activeObject!==this)return this;t.save();var n=this.getCenterPoint(),r=this._calculateCurrentDimensions(),i=this.canvas.viewportTransform;return t.translate(n.x,n.y),t.scale(1/i[0],1/i[3]),t.rotate(e(this.angle)),t.fillStyle=this.selectionBackgroundColor,t.fillRect(-r.x/2,-r.y/2,r.x,r.y),t.restore(),this},drawBorders:function(e,t){t||={};var n=this._calculateCurrentDimensions(),r=this.borderScaleFactor,i=n.x+r,a=n.y+r,o=t.hasControls===void 0?this.hasControls:t.hasControls,s=!1;return e.save(),e.strokeStyle=t.borderColor||this.borderColor,this._setLineDash(e,t.borderDashArray||this.borderDashArray),e.strokeRect(-i/2,-a/2,i,a),o&&(e.beginPath(),this.forEachControl(function(t,n,r){t.withConnection&&t.getVisibility(r,n)&&(s=!0,e.moveTo(t.x*i,t.y*a),e.lineTo(t.x*i+t.offsetX,t.y*a+t.offsetY))}),s&&e.stroke()),e.restore(),this},drawBordersInGroup:function(e,n,r){r||={};var i=t.util.sizeAfterTransform(this.width,this.height,n),a=this.strokeWidth,o=this.strokeUniform,s=this.borderScaleFactor,c=i.x+a*(o?this.canvas.getZoom():n.scaleX)+s,l=i.y+a*(o?this.canvas.getZoom():n.scaleY)+s;return e.save(),this._setLineDash(e,r.borderDashArray||this.borderDashArray),e.strokeStyle=r.borderColor||this.borderColor,e.strokeRect(-c/2,-l/2,c,l),e.restore(),this},drawControls:function(e,n){n||={},e.save();var r=1,i,a;return this.canvas&&(r=this.canvas.getRetinaScaling()),e.setTransform(r,0,0,r,0,0),e.strokeStyle=e.fillStyle=n.cornerColor||this.cornerColor,this.transparentCorners||(e.strokeStyle=n.cornerStrokeColor||this.cornerStrokeColor),this._setLineDash(e,n.cornerDashArray||this.cornerDashArray),this.setCoords(),this.group&&(i=this.group.calcTransformMatrix()),this.forEachControl(function(r,o,s){a=s.oCoords[o],r.getVisibility(s,o)&&(i&&(a=t.util.transformPoint(a,i)),r.render(e,a.x,a.y,n,s))}),e.restore(),this},isControlVisible:function(e){return this.controls[e]&&this.controls[e].getVisibility(this,e)},setControlVisible:function(e,t){return this._controlsVisibility||={},this._controlsVisibility[e]=t,this},setControlsVisibility:function(e){for(var t in e||={},e)this.setControlVisible(t,e[t]);return this},onDeselect:function(){},onSelect:function(){}})})(),t.util.object.extend(t.StaticCanvas.prototype,{FX_DURATION:500,fxCenterObjectH:function(e,n){n||={};var r=function(){},i=n.onComplete||r,a=n.onChange||r,o=this;return t.util.animate({target:this,startValue:e.left,endValue:this.getCenterPoint().x,duration:this.FX_DURATION,onChange:function(t){e.set(`left`,t),o.requestRenderAll(),a()},onComplete:function(){e.setCoords(),i()}})},fxCenterObjectV:function(e,n){n||={};var r=function(){},i=n.onComplete||r,a=n.onChange||r,o=this;return t.util.animate({target:this,startValue:e.top,endValue:this.getCenterPoint().y,duration:this.FX_DURATION,onChange:function(t){e.set(`top`,t),o.requestRenderAll(),a()},onComplete:function(){e.setCoords(),i()}})},fxRemove:function(e,n){n||={};var r=function(){},i=n.onComplete||r,a=n.onChange||r,o=this;return t.util.animate({target:this,startValue:e.opacity,endValue:0,duration:this.FX_DURATION,onChange:function(t){e.set(`opacity`,t),o.requestRenderAll(),a()},onComplete:function(){o.remove(e),i()}})}}),t.util.object.extend(t.Object.prototype,{animate:function(){if(arguments[0]&&typeof arguments[0]==`object`){var e=[],t,n,r=[];for(t in arguments[0])e.push(t);for(var i=0,a=e.length;i<a;i++)t=e[i],n=i!==a-1,r.push(this._animate(t,arguments[0][t],arguments[1],n));return r}else return this._animate.apply(this,arguments)},_animate:function(e,n,r,i){var a=this,o;n=n.toString(),r=r?t.util.object.clone(r):{},~e.indexOf(`.`)&&(o=e.split(`.`));var s=a.colorProperties.indexOf(e)>-1||o&&a.colorProperties.indexOf(o[1])>-1,c=o?this.get(o[0])[o[1]]:this.get(e);`from`in r||(r.from=c),s||(n=~n.indexOf(`=`)?c+parseFloat(n.replace(`=`,``)):parseFloat(n));var l={target:this,startValue:r.from,endValue:n,byValue:r.by,easing:r.easing,duration:r.duration,abort:r.abort&&function(e,t,n){return r.abort.call(a,e,t,n)},onChange:function(t,n,s){o?a[o[0]][o[1]]=t:a.set(e,t),!i&&r.onChange&&r.onChange(t,n,s)},onComplete:function(e,t,n){i||(a.setCoords(),r.onComplete&&r.onComplete(e,t,n))}};return s?t.util.animateColor(l.startValue,l.endValue,l.duration,l):t.util.animate(l)}}),(function(e){var t=e.fabric||={},n=t.util.object.extend,r=t.util.object.clone,i={x1:1,x2:1,y1:1,y2:1};if(t.Line){t.warn(`fabric.Line is already defined`);return}t.Line=t.util.createClass(t.Object,{type:`line`,x1:0,y1:0,x2:0,y2:0,cacheProperties:t.Object.prototype.cacheProperties.concat(`x1`,`x2`,`y1`,`y2`),initialize:function(e,t){e||=[0,0,0,0],this.callSuper(`initialize`,t),this.set(`x1`,e[0]),this.set(`y1`,e[1]),this.set(`x2`,e[2]),this.set(`y2`,e[3]),this._setWidthHeight(t)},_setWidthHeight:function(e){e||={},this.width=Math.abs(this.x2-this.x1),this.height=Math.abs(this.y2-this.y1),this.left=`left`in e?e.left:this._getLeftToOriginX(),this.top=`top`in e?e.top:this._getTopToOriginY()},_set:function(e,t){return this.callSuper(`_set`,e,t),i[e]!==void 0&&this._setWidthHeight(),this},_getLeftToOriginX:a({origin:`originX`,axis1:`x1`,axis2:`x2`,dimension:`width`},{nearest:`left`,center:`center`,farthest:`right`}),_getTopToOriginY:a({origin:`originY`,axis1:`y1`,axis2:`y2`,dimension:`height`},{nearest:`top`,center:`center`,farthest:`bottom`}),_render:function(e){e.beginPath();var t=this.calcLinePoints();e.moveTo(t.x1,t.y1),e.lineTo(t.x2,t.y2),e.lineWidth=this.strokeWidth;var n=e.strokeStyle;e.strokeStyle=this.stroke||e.fillStyle,this.stroke&&this._renderStroke(e),e.strokeStyle=n},_findCenterFromElement:function(){return{x:(this.x1+this.x2)/2,y:(this.y1+this.y2)/2}},toObject:function(e){return n(this.callSuper(`toObject`,e),this.calcLinePoints())},_getNonTransformedDimensions:function(){var e=this.callSuper(`_getNonTransformedDimensions`);return this.strokeLineCap===`butt`&&(this.width===0&&(e.y-=this.strokeWidth),this.height===0&&(e.x-=this.strokeWidth)),e},calcLinePoints:function(){var e=this.x1<=this.x2?-1:1,t=this.y1<=this.y2?-1:1,n=e*this.width*.5,r=t*this.height*.5;return{x1:n,x2:e*this.width*-.5,y1:r,y2:t*this.height*-.5}},_toSVG:function(){var e=this.calcLinePoints();return[`<line `,`COMMON_PARTS`,`x1="`,e.x1,`" y1="`,e.y1,`" x2="`,e.x2,`" y2="`,e.y2,`" />
-`]}}),t.Line.ATTRIBUTE_NAMES=t.SHARED_ATTRIBUTES.concat(`x1 y1 x2 y2`.split(` `)),t.Line.fromElement=function(e,r,i){i||={};var a=t.parseAttributes(e,t.Line.ATTRIBUTE_NAMES),o=[a.x1||0,a.y1||0,a.x2||0,a.y2||0];r(new t.Line(o,n(a,i)))},t.Line.fromObject=function(e,n){function i(e){delete e.points,n&&n(e)}var a=r(e,!0);a.points=[e.x1,e.y1,e.x2,e.y2],t.Object._fromObject(`Line`,a,i,`points`)};function a(e,t){var n=e.origin,r=e.axis1,i=e.axis2,a=e.dimension,o=t.nearest,s=t.center,c=t.farthest;return function(){switch(this.get(n)){case o:return Math.min(this.get(r),this.get(i));case s:return Math.min(this.get(r),this.get(i))+.5*this.get(a);case c:return Math.max(this.get(r),this.get(i))}}}})(e),(function(e){var t=e.fabric||={},n=t.util.degreesToRadians;if(t.Circle){t.warn(`fabric.Circle is already defined.`);return}t.Circle=t.util.createClass(t.Object,{type:`circle`,radius:0,startAngle:0,endAngle:360,cacheProperties:t.Object.prototype.cacheProperties.concat(`radius`,`startAngle`,`endAngle`),_set:function(e,t){return this.callSuper(`_set`,e,t),e===`radius`&&this.setRadius(t),this},toObject:function(e){return this.callSuper(`toObject`,[`radius`,`startAngle`,`endAngle`].concat(e))},_toSVG:function(){var e,r=0,i=0,a=(this.endAngle-this.startAngle)%360;if(a===0)e=[`<circle `,`COMMON_PARTS`,`cx="`+r+`" cy="`+i+`" `,`r="`,this.radius,`" />
-`];else{var o=n(this.startAngle),s=n(this.endAngle),c=this.radius,l=t.util.cos(o)*c,u=t.util.sin(o)*c,d=t.util.cos(s)*c,f=t.util.sin(s)*c,p=a>180?`1`:`0`;e=[`<path d="M `+l+` `+u,` A `+c+` `+c,` 0 `,+p+` 1`,` `+d+` `+f,`" `,`COMMON_PARTS`,` />
-`]}return e},_render:function(e){e.beginPath(),e.arc(0,0,this.radius,n(this.startAngle),n(this.endAngle),!1),this._renderPaintInOrder(e)},getRadiusX:function(){return this.get(`radius`)*this.get(`scaleX`)},getRadiusY:function(){return this.get(`radius`)*this.get(`scaleY`)},setRadius:function(e){return this.radius=e,this.set(`width`,e*2).set(`height`,e*2)}}),t.Circle.ATTRIBUTE_NAMES=t.SHARED_ATTRIBUTES.concat(`cx cy r`.split(` `)),t.Circle.fromElement=function(e,n){var i=t.parseAttributes(e,t.Circle.ATTRIBUTE_NAMES);if(!r(i))throw Error("value of `r` attribute is required and can not be negative");i.left=(i.left||0)-i.radius,i.top=(i.top||0)-i.radius,n(new t.Circle(i))};function r(e){return`radius`in e&&e.radius>=0}t.Circle.fromObject=function(e,n){t.Object._fromObject(`Circle`,e,n)}})(e),(function(e){var t=e.fabric||={};if(t.Triangle){t.warn(`fabric.Triangle is already defined`);return}t.Triangle=t.util.createClass(t.Object,{type:`triangle`,width:100,height:100,_render:function(e){var t=this.width/2,n=this.height/2;e.beginPath(),e.moveTo(-t,n),e.lineTo(0,-n),e.lineTo(t,n),e.closePath(),this._renderPaintInOrder(e)},_toSVG:function(){var e=this.width/2,t=this.height/2;return[`<polygon `,`COMMON_PARTS`,`points="`,[-e+` `+t,`0 `+-t,e+` `+t].join(`,`),`" />`]}}),t.Triangle.fromObject=function(e,n){return t.Object._fromObject(`Triangle`,e,n)}})(e),(function(e){var t=e.fabric||={},n=Math.PI*2;if(t.Ellipse){t.warn(`fabric.Ellipse is already defined.`);return}t.Ellipse=t.util.createClass(t.Object,{type:`ellipse`,rx:0,ry:0,cacheProperties:t.Object.prototype.cacheProperties.concat(`rx`,`ry`),initialize:function(e){this.callSuper(`initialize`,e),this.set(`rx`,e&&e.rx||0),this.set(`ry`,e&&e.ry||0)},_set:function(e,t){switch(this.callSuper(`_set`,e,t),e){case`rx`:this.rx=t,this.set(`width`,t*2);break;case`ry`:this.ry=t,this.set(`height`,t*2);break}return this},getRx:function(){return this.get(`rx`)*this.get(`scaleX`)},getRy:function(){return this.get(`ry`)*this.get(`scaleY`)},toObject:function(e){return this.callSuper(`toObject`,[`rx`,`ry`].concat(e))},_toSVG:function(){return[`<ellipse `,`COMMON_PARTS`,`cx="0" cy="0" `,`rx="`,this.rx,`" ry="`,this.ry,`" />
-`]},_render:function(e){e.beginPath(),e.save(),e.transform(1,0,0,this.ry/this.rx,0,0),e.arc(0,0,this.rx,0,n,!1),e.restore(),this._renderPaintInOrder(e)}}),t.Ellipse.ATTRIBUTE_NAMES=t.SHARED_ATTRIBUTES.concat(`cx cy rx ry`.split(` `)),t.Ellipse.fromElement=function(e,n){var r=t.parseAttributes(e,t.Ellipse.ATTRIBUTE_NAMES);r.left=(r.left||0)-r.rx,r.top=(r.top||0)-r.ry,n(new t.Ellipse(r))},t.Ellipse.fromObject=function(e,n){t.Object._fromObject(`Ellipse`,e,n)}})(e),(function(e){var t=e.fabric||={},n=t.util.object.extend;if(t.Rect){t.warn(`fabric.Rect is already defined`);return}t.Rect=t.util.createClass(t.Object,{stateProperties:t.Object.prototype.stateProperties.concat(`rx`,`ry`),type:`rect`,rx:0,ry:0,cacheProperties:t.Object.prototype.cacheProperties.concat(`rx`,`ry`),initialize:function(e){this.callSuper(`initialize`,e),this._initRxRy()},_initRxRy:function(){this.rx&&!this.ry?this.ry=this.rx:this.ry&&!this.rx&&(this.rx=this.ry)},_render:function(e){var t=this.rx?Math.min(this.rx,this.width/2):0,n=this.ry?Math.min(this.ry,this.height/2):0,r=this.width,i=this.height,a=-this.width/2,o=-this.height/2,s=t!==0||n!==0,c=.4477152502;e.beginPath(),e.moveTo(a+t,o),e.lineTo(a+r-t,o),s&&e.bezierCurveTo(a+r-c*t,o,a+r,o+c*n,a+r,o+n),e.lineTo(a+r,o+i-n),s&&e.bezierCurveTo(a+r,o+i-c*n,a+r-c*t,o+i,a+r-t,o+i),e.lineTo(a+t,o+i),s&&e.bezierCurveTo(a+c*t,o+i,a,o+i-c*n,a,o+i-n),e.lineTo(a,o+n),s&&e.bezierCurveTo(a,o+c*n,a+c*t,o,a+t,o),e.closePath(),this._renderPaintInOrder(e)},toObject:function(e){return this.callSuper(`toObject`,[`rx`,`ry`].concat(e))},_toSVG:function(){return[`<rect `,`COMMON_PARTS`,`x="`,-this.width/2,`" y="`,-this.height/2,`" rx="`,this.rx,`" ry="`,this.ry,`" width="`,this.width,`" height="`,this.height,`" />
-`]}}),t.Rect.ATTRIBUTE_NAMES=t.SHARED_ATTRIBUTES.concat(`x y rx ry width height`.split(` `)),t.Rect.fromElement=function(e,r,i){if(!e)return r(null);i||={};var a=t.parseAttributes(e,t.Rect.ATTRIBUTE_NAMES);a.left=a.left||0,a.top=a.top||0,a.height=a.height||0,a.width=a.width||0;var o=new t.Rect(n(i?t.util.object.clone(i):{},a));o.visible=o.visible&&o.width>0&&o.height>0,r(o)},t.Rect.fromObject=function(e,n){return t.Object._fromObject(`Rect`,e,n)}})(e),(function(e){var t=e.fabric||={},n=t.util.object.extend,r=t.util.array.min,i=t.util.array.max,a=t.util.toFixed,o=t.util.projectStrokeOnPoints;if(t.Polyline){t.warn(`fabric.Polyline is already defined`);return}t.Polyline=t.util.createClass(t.Object,{type:`polyline`,points:null,exactBoundingBox:!1,cacheProperties:t.Object.prototype.cacheProperties.concat(`points`),initialize:function(e,t){t||={},this.points=e||[],this.callSuper(`initialize`,t),this._setPositionDimensions(t)},_projectStrokeOnPoints:function(){return o(this.points,this,!0)},_setPositionDimensions:function(e){var t=this._calcDimensions(e),n,r=this.exactBoundingBox?this.strokeWidth:0;this.width=t.width-r,this.height=t.height-r,e.fromSVG||(n=this.translateToGivenOrigin({x:t.left-this.strokeWidth/2+r/2,y:t.top-this.strokeWidth/2+r/2},`left`,`top`,this.originX,this.originY)),e.left===void 0&&(this.left=e.fromSVG?t.left:n.x),e.top===void 0&&(this.top=e.fromSVG?t.top:n.y),this.pathOffset={x:t.left+this.width/2+r/2,y:t.top+this.height/2+r/2}},_calcDimensions:function(){var e=this.exactBoundingBox?this._projectStrokeOnPoints():this.points,t=r(e,`x`)||0,n=r(e,`y`)||0,a=i(e,`x`)||0,o=i(e,`y`)||0;return{left:t,top:n,width:a-t,height:o-n}},toObject:function(e){return n(this.callSuper(`toObject`,e),{points:this.points.concat()})},_toSVG:function(){for(var e=[],n=this.pathOffset.x,r=this.pathOffset.y,i=t.Object.NUM_FRACTION_DIGITS,o=0,s=this.points.length;o<s;o++)e.push(a(this.points[o].x-n,i),`,`,a(this.points[o].y-r,i),` `);return[`<`+this.type+` `,`COMMON_PARTS`,`points="`,e.join(``),`" />
-`]},commonRender:function(e){var t,n=this.points.length,r=this.pathOffset.x,i=this.pathOffset.y;if(!n||isNaN(this.points[n-1].y))return!1;e.beginPath(),e.moveTo(this.points[0].x-r,this.points[0].y-i);for(var a=0;a<n;a++)t=this.points[a],e.lineTo(t.x-r,t.y-i);return!0},_render:function(e){this.commonRender(e)&&this._renderPaintInOrder(e)},complexity:function(){return this.get(`points`).length}}),t.Polyline.ATTRIBUTE_NAMES=t.SHARED_ATTRIBUTES.concat(),t.Polyline.fromElementGenerator=function(e){return function(r,i,a){if(!r)return i(null);a||={};var o=t.parsePointsAttribute(r.getAttribute(`points`)),s=t.parseAttributes(r,t[e].ATTRIBUTE_NAMES);s.fromSVG=!0,i(new t[e](o,n(s,a)))}},t.Polyline.fromElement=t.Polyline.fromElementGenerator(`Polyline`),t.Polyline.fromObject=function(e,n){return t.Object._fromObject(`Polyline`,e,n,`points`)}})(e),(function(e){var t=e.fabric||={},n=t.util.projectStrokeOnPoints;if(t.Polygon){t.warn(`fabric.Polygon is already defined`);return}t.Polygon=t.util.createClass(t.Polyline,{type:`polygon`,_projectStrokeOnPoints:function(){return n(this.points,this)},_render:function(e){this.commonRender(e)&&(e.closePath(),this._renderPaintInOrder(e))}}),t.Polygon.ATTRIBUTE_NAMES=t.SHARED_ATTRIBUTES.concat(),t.Polygon.fromElement=t.Polyline.fromElementGenerator(`Polygon`),t.Polygon.fromObject=function(e,n){t.Object._fromObject(`Polygon`,e,n,`points`)}})(e),(function(e){var t=e.fabric||={},n=t.util.array.min,r=t.util.array.max,i=t.util.object.extend,a=t.util.object.clone,o=t.util.toFixed;if(t.Path){t.warn(`fabric.Path is already defined`);return}t.Path=t.util.createClass(t.Object,{type:`path`,path:null,cacheProperties:t.Object.prototype.cacheProperties.concat(`path`,`fillRule`),stateProperties:t.Object.prototype.stateProperties.concat(`path`),initialize:function(e,t){t=a(t||{}),delete t.path,this.callSuper(`initialize`,t),this._setPath(e||[],t)},_setPath:function(e,n){this.path=t.util.makePathSimpler(Array.isArray(e)?e:t.util.parsePath(e)),t.Polyline.prototype._setPositionDimensions.call(this,n||{})},_renderPathCommands:function(e){var t,n=0,r=0,i=0,a=0,o=0,s=0,c=-this.pathOffset.x,l=-this.pathOffset.y;e.beginPath();for(var u=0,d=this.path.length;u<d;++u)switch(t=this.path[u],t[0]){case`L`:i=t[1],a=t[2],e.lineTo(i+c,a+l);break;case`M`:i=t[1],a=t[2],n=i,r=a,e.moveTo(i+c,a+l);break;case`C`:i=t[5],a=t[6],o=t[3],s=t[4],e.bezierCurveTo(t[1]+c,t[2]+l,o+c,s+l,i+c,a+l);break;case`Q`:e.quadraticCurveTo(t[1]+c,t[2]+l,t[3]+c,t[4]+l),i=t[3],a=t[4],o=t[1],s=t[2];break;case`z`:case`Z`:i=n,a=r,e.closePath();break}},_render:function(e){this._renderPathCommands(e),this._renderPaintInOrder(e)},toString:function(){return`#<fabric.Path (`+this.complexity()+`): { "top": `+this.top+`, "left": `+this.left+` }>`},toObject:function(e){return i(this.callSuper(`toObject`,e),{path:this.path.map(function(e){return e.slice()})})},toDatalessObject:function(e){var t=this.toObject([`sourcePath`].concat(e));return t.sourcePath&&delete t.path,t},_toSVG:function(){return[`<path `,`COMMON_PARTS`,`d="`,t.util.joinPath(this.path),`" stroke-linecap="round" `,`/>
-`]},_getOffsetTransform:function(){var e=t.Object.NUM_FRACTION_DIGITS;return` translate(`+o(-this.pathOffset.x,e)+`, `+o(-this.pathOffset.y,e)+`)`},toClipPathSVG:function(e){var t=this._getOffsetTransform();return`	`+this._createBaseClipPathSVGMarkup(this._toSVG(),{reviver:e,additionalTransform:t})},toSVG:function(e){var t=this._getOffsetTransform();return this._createBaseSVGMarkup(this._toSVG(),{reviver:e,additionalTransform:t})},complexity:function(){return this.path.length},_calcDimensions:function(){for(var e=[],i=[],a,o=0,s=0,c=0,l=0,u,d=0,f=this.path.length;d<f;++d){switch(a=this.path[d],a[0]){case`L`:c=a[1],l=a[2],u=[];break;case`M`:c=a[1],l=a[2],o=c,s=l,u=[];break;case`C`:u=t.util.getBoundsOfCurve(c,l,a[1],a[2],a[3],a[4],a[5],a[6]),c=a[5],l=a[6];break;case`Q`:u=t.util.getBoundsOfCurve(c,l,a[1],a[2],a[1],a[2],a[3],a[4]),c=a[3],l=a[4];break;case`z`:case`Z`:c=o,l=s;break}u.forEach(function(t){e.push(t.x),i.push(t.y)}),e.push(c),i.push(l)}var p=n(e)||0,m=n(i)||0,h=r(e)||0,g=r(i)||0;return{left:p,top:m,width:h-p,height:g-m}}}),t.Path.fromObject=function(e,n){if(typeof e.sourcePath==`string`){var r=e.sourcePath;t.loadSVGFromURL(r,function(r){var i=r[0];i.setOptions(e),e.clipPath?t.util.enlivenObjects([e.clipPath],function(e){i.clipPath=e[0],n&&n(i)}):n&&n(i)})}else t.Object._fromObject(`Path`,e,n,`path`)},t.Path.ATTRIBUTE_NAMES=t.SHARED_ATTRIBUTES.concat([`d`]),t.Path.fromElement=function(e,n,r){var a=t.parseAttributes(e,t.Path.ATTRIBUTE_NAMES);a.fromSVG=!0,n(new t.Path(a.d,i(a,r)))}})(e),(function(e){var t=e.fabric||={},n=t.util.array.min,r=t.util.array.max;t.Group||(t.Group=t.util.createClass(t.Object,t.Collection,{type:`group`,strokeWidth:0,subTargetCheck:!1,cacheProperties:[],useSetOnGroup:!1,initialize:function(e,t,n){t||={},this._objects=[],n&&this.callSuper(`initialize`,t),this._objects=e||[];for(var r=this._objects.length;r--;)this._objects[r].group=this;if(n)this._updateObjectsACoords();else{var i=t&&t.centerPoint;t.originX!==void 0&&(this.originX=t.originX),t.originY!==void 0&&(this.originY=t.originY),i||this._calcBounds(),this._updateObjectsCoords(i),delete t.centerPoint,this.callSuper(`initialize`,t)}this.setCoords()},_updateObjectsACoords:function(){for(var e=!0,t=this._objects.length;t--;)this._objects[t].setCoords(e)},_updateObjectsCoords:function(e){for(var e=e||this.getCenterPoint(),t=this._objects.length;t--;)this._updateObjectCoords(this._objects[t],e)},_updateObjectCoords:function(e,t){var n=e.left,r=e.top;e.set({left:n-t.x,top:r-t.y}),e.group=this,e.setCoords(!0)},toString:function(){return`#<fabric.Group: (`+this.complexity()+`)>`},addWithUpdate:function(e){var n=!!this.group;return this._restoreObjectsState(),t.util.resetObjectTransform(this),e&&(n&&t.util.removeTransformFromObject(e,this.group.calcTransformMatrix()),this._objects.push(e),e.group=this,e._set(`canvas`,this.canvas)),this._calcBounds(),this._updateObjectsCoords(),this.dirty=!0,n?this.group.addWithUpdate():this.setCoords(),this},removeWithUpdate:function(e){return this._restoreObjectsState(),t.util.resetObjectTransform(this),this.remove(e),this._calcBounds(),this._updateObjectsCoords(),this.setCoords(),this.dirty=!0,this},_onObjectAdded:function(e){this.dirty=!0,e.group=this,e._set(`canvas`,this.canvas)},_onObjectRemoved:function(e){this.dirty=!0,delete e.group},_set:function(e,n){var r=this._objects.length;if(this.useSetOnGroup)for(;r--;)this._objects[r].setOnGroup(e,n);if(e===`canvas`)for(;r--;)this._objects[r]._set(e,n);t.Object.prototype._set.call(this,e,n)},toObject:function(e){var n=this.includeDefaultValues,r=this._objects.filter(function(e){return!e.excludeFromExport}).map(function(t){var r=t.includeDefaultValues;t.includeDefaultValues=n;var i=t.toObject(e);return t.includeDefaultValues=r,i}),i=t.Object.prototype.toObject.call(this,e);return i.objects=r,i},toDatalessObject:function(e){var n,r=this.sourcePath;if(r)n=r;else{var i=this.includeDefaultValues;n=this._objects.map(function(t){var n=t.includeDefaultValues;t.includeDefaultValues=i;var r=t.toDatalessObject(e);return t.includeDefaultValues=n,r})}var a=t.Object.prototype.toDatalessObject.call(this,e);return a.objects=n,a},render:function(e){this._transformDone=!0,this.callSuper(`render`,e),this._transformDone=!1},shouldCache:function(){var e=t.Object.prototype.shouldCache.call(this);if(e){for(var n=0,r=this._objects.length;n<r;n++)if(this._objects[n].willDrawShadow())return this.ownCaching=!1,!1}return e},willDrawShadow:function(){if(t.Object.prototype.willDrawShadow.call(this))return!0;for(var e=0,n=this._objects.length;e<n;e++)if(this._objects[e].willDrawShadow())return!0;return!1},isOnACache:function(){return this.ownCaching||this.group&&this.group.isOnACache()},drawObject:function(e){for(var t=0,n=this._objects.length;t<n;t++)this._objects[t].render(e);this._drawClipPath(e,this.clipPath)},isCacheDirty:function(e){if(this.callSuper(`isCacheDirty`,e))return!0;if(!this.statefullCache)return!1;for(var t=0,n=this._objects.length;t<n;t++)if(this._objects[t].isCacheDirty(!0)){if(this._cacheCanvas){var r=this.cacheWidth/this.zoomX,i=this.cacheHeight/this.zoomY;this._cacheContext.clearRect(-r/2,-i/2,r,i)}return!0}return!1},_restoreObjectsState:function(){var e=this.calcOwnMatrix();return this._objects.forEach(function(n){t.util.addTransformToObject(n,e),delete n.group,n.setCoords()}),this},destroy:function(){return this._objects.forEach(function(e){e.set(`dirty`,!0)}),this._restoreObjectsState()},dispose:function(){this.callSuper(`dispose`),this.forEachObject(function(e){e.dispose&&e.dispose()}),this._objects=[]},toActiveSelection:function(){if(this.canvas){var e=this._objects,n=this.canvas;this._objects=[];var r=this.toObject();delete r.objects;var i=new t.ActiveSelection([]);return i.set(r),i.type=`activeSelection`,n.remove(this),e.forEach(function(e){e.group=i,e.dirty=!0,n.add(e)}),i.canvas=n,i._objects=e,n._activeObject=i,i.setCoords(),i}},ungroupOnCanvas:function(){return this._restoreObjectsState()},setObjectsCoords:function(){var e=!0;return this.forEachObject(function(t){t.setCoords(e)}),this},_calcBounds:function(e){for(var t=[],n=[],r,i,a,o=[`tr`,`br`,`bl`,`tl`],s=0,c=this._objects.length,l,u=o.length;s<c;++s){for(r=this._objects[s],a=r.calcACoords(),l=0;l<u;l++)i=o[l],t.push(a[i].x),n.push(a[i].y);r.aCoords=a}this._getBounds(t,n,e)},_getBounds:function(e,i,a){var o=new t.Point(n(e),n(i)),s=new t.Point(r(e),r(i)),c=o.y||0,l=o.x||0,u=s.x-o.x||0,d=s.y-o.y||0;this.width=u,this.height=d,a||this.setPositionByOrigin({x:l,y:c},`left`,`top`)},_toSVG:function(e){for(var t=[`<g `,`COMMON_PARTS`,` >
-`],n=0,r=this._objects.length;n<r;n++)t.push(`		`,this._objects[n].toSVG(e));return t.push(`</g>
-`),t},getSvgStyles:function(){var e=this.opacity!==void 0&&this.opacity!==1?`opacity: `+this.opacity+`;`:``,t=this.visible?``:` visibility: hidden;`;return[e,this.getSvgFilter(),t].join(``)},toClipPathSVG:function(e){for(var t=[],n=0,r=this._objects.length;n<r;n++)t.push(`	`,this._objects[n].toClipPathSVG(e));return this._createBaseClipPathSVGMarkup(t,{reviver:e})}}),t.Group.fromObject=function(e,n){var r=e.objects,i=t.util.object.clone(e,!0);if(delete i.objects,typeof r==`string`){t.loadSVGFromURL(r,function(a){var o=t.util.groupSVGElements(a,e,r),s=i.clipPath;delete i.clipPath,o.set(i),s?t.util.enlivenObjects([s],function(e){o.clipPath=e[0],n&&n(o)}):n&&n(o)});return}t.util.enlivenObjects(r,function(r){t.util.enlivenObjectEnlivables(e,i,function(){n&&n(new t.Group(r,i,!0))})})})})(e),(function(e){var t=e.fabric||={};t.ActiveSelection||(t.ActiveSelection=t.util.createClass(t.Group,{type:`activeSelection`,initialize:function(e,n){n||={},this._objects=e||[];for(var r=this._objects.length;r--;)this._objects[r].group=this;n.originX&&(this.originX=n.originX),n.originY&&(this.originY=n.originY),this._calcBounds(),this._updateObjectsCoords(),t.Object.prototype.initialize.call(this,n),this.setCoords()},toGroup:function(){var e=this._objects.concat();this._objects=[];var n=t.Object.prototype.toObject.call(this),r=new t.Group([]);if(delete n.type,r.set(n),e.forEach(function(e){e.canvas.remove(e),e.group=r}),r._objects=e,!this.canvas)return r;var i=this.canvas;return i.add(r),i._activeObject=r,r.setCoords(),r},onDeselect:function(){return this.destroy(),!1},toString:function(){return`#<fabric.ActiveSelection: (`+this.complexity()+`)>`},shouldCache:function(){return!1},isOnACache:function(){return!1},_renderControls:function(e,t,n){e.save(),e.globalAlpha=this.isMoving?this.borderOpacityWhenMoving:1,n||={},n.hasControls===void 0&&(n.hasControls=!1),n.forActiveSelection=!0;for(var r=0,i=this._objects.length;r<i;r++)this._objects[r]._renderControls(e,n);this.callSuper(`_renderControls`,e,t),e.restore()}}),t.ActiveSelection.fromObject=function(e,n){t.util.enlivenObjects(e.objects,function(r){delete e.objects,n&&n(new t.ActiveSelection(r,e,!0))})})})(e),(function(e){var n=t.util.object.extend;if(e.fabric||={},e.fabric.Image){t.warn(`fabric.Image is already defined.`);return}t.Image=t.util.createClass(t.Object,{type:`image`,strokeWidth:0,srcFromAttribute:!1,_lastScaleX:1,_lastScaleY:1,_filterScalingX:1,_filterScalingY:1,minimumScaleTrigger:.5,stateProperties:t.Object.prototype.stateProperties.concat(`cropX`,`cropY`),cacheProperties:t.Object.prototype.cacheProperties.concat(`cropX`,`cropY`),cacheKey:``,cropX:0,cropY:0,imageSmoothing:!0,initialize:function(e,n){n||={},this.filters=[],this.cacheKey=`texture`+ t.Object.__uid++,this.callSuper(`initialize`,n),this._initElement(e,n)},getElement:function(){return this._element||{}},setElement:function(e,t){return this.removeTexture(this.cacheKey),this.removeTexture(this.cacheKey+`_filtered`),this._element=e,this._originalElement=e,this._initConfig(t),this.filters.length!==0&&this.applyFilters(),this.resizeFilter&&this.applyResizeFilters(),this},removeTexture:function(e){var n=t.filterBackend;n&&n.evictCachesForKey&&n.evictCachesForKey(e)},dispose:function(){this.callSuper(`dispose`),this.removeTexture(this.cacheKey),this.removeTexture(this.cacheKey+`_filtered`),this._cacheContext=void 0,[`_originalElement`,`_element`,`_filteredEl`,`_cacheCanvas`].forEach((function(e){t.util.cleanUpJsdomNode(this[e]),this[e]=void 0}).bind(this))},getCrossOrigin:function(){return this._originalElement&&(this._originalElement.crossOrigin||null)},getOriginalSize:function(){var e=this.getElement();return{width:e.naturalWidth||e.width,height:e.naturalHeight||e.height}},_stroke:function(e){if(!(!this.stroke||this.strokeWidth===0)){var t=this.width/2,n=this.height/2;e.beginPath(),e.moveTo(-t,-n),e.lineTo(t,-n),e.lineTo(t,n),e.lineTo(-t,n),e.lineTo(-t,-n),e.closePath()}},toObject:function(e){var t=[];this.filters.forEach(function(e){e&&t.push(e.toObject())});var r=n(this.callSuper(`toObject`,[`cropX`,`cropY`].concat(e)),{src:this.getSrc(),crossOrigin:this.getCrossOrigin(),filters:t});return this.resizeFilter&&(r.resizeFilter=this.resizeFilter.toObject()),r},hasCrop:function(){return this.cropX||this.cropY||this.width<this._element.width||this.height<this._element.height},_toSVG:function(){var e=[],n=[],r,i=this._element,a=-this.width/2,o=-this.height/2,s=``,c=``;if(!i)return[];if(this.hasCrop()){var l=t.Object.__uid++;e.push(`<clipPath id="imageCrop_`+l+`">
-`,`	<rect x="`+a+`" y="`+o+`" width="`+this.width+`" height="`+this.height+`" />
-`,`</clipPath>
-`),s=` clip-path="url(#imageCrop_`+l+`)" `}if(this.imageSmoothing||(c=`" image-rendering="optimizeSpeed`),n.push(`	<image `,`COMMON_PARTS`,`xlink:href="`,this.getSvgSrc(!0),`" x="`,a-this.cropX,`" y="`,o-this.cropY,`" width="`,i.width||i.naturalWidth,`" height="`,i.height||i.height,c,`"`,s,`></image>
-`),this.stroke||this.strokeDashArray){var u=this.fill;this.fill=null,r=[`	<rect `,`x="`,a,`" y="`,o,`" width="`,this.width,`" height="`,this.height,`" style="`,this.getSvgStyles(),`"/>
-`],this.fill=u}return e=this.paintFirst===`fill`?e.concat(n,r):e.concat(r,n),e},getSrc:function(e){var t=e?this._element:this._originalElement;return t?t.toDataURL?t.toDataURL():this.srcFromAttribute?t.getAttribute(`src`):t.src:this.src||``},setSrc:function(e,n,r){return t.util.loadImage(e,function(e,t){this.setElement(e,r),this._setWidthHeight(),n&&n(this,t)},this,r&&r.crossOrigin),this},toString:function(){return`#<fabric.Image: { src: "`+this.getSrc()+`" }>`},applyResizeFilters:function(){var e=this.resizeFilter,n=this.minimumScaleTrigger,r=this.getTotalObjectScaling(),i=r.scaleX,a=r.scaleY,o=this._filteredEl||this._originalElement;if(this.group&&this.set(`dirty`,!0),!e||i>n&&a>n){this._element=o,this._filterScalingX=1,this._filterScalingY=1,this._lastScaleX=i,this._lastScaleY=a;return}t.filterBackend||=t.initFilterBackend();var s=t.util.createCanvasElement(),c=this._filteredEl?this.cacheKey+`_filtered`:this.cacheKey,l=o.width,u=o.height;s.width=l,s.height=u,this._element=s,this._lastScaleX=e.scaleX=i,this._lastScaleY=e.scaleY=a,t.filterBackend.applyFilters([e],o,l,u,this._element,c),this._filterScalingX=s.width/this._originalElement.width,this._filterScalingY=s.height/this._originalElement.height},applyFilters:function(e){if(e=e||this.filters||[],e=e.filter(function(e){return e&&!e.isNeutralState()}),this.set(`dirty`,!0),this.removeTexture(this.cacheKey+`_filtered`),e.length===0)return this._element=this._originalElement,this._filteredEl=null,this._filterScalingX=1,this._filterScalingY=1,this;var n=this._originalElement,r=n.naturalWidth||n.width,i=n.naturalHeight||n.height;if(this._element===this._originalElement){var a=t.util.createCanvasElement();a.width=r,a.height=i,this._element=a,this._filteredEl=a}else this._element=this._filteredEl,this._filteredEl.getContext(`2d`).clearRect(0,0,r,i),this._lastScaleX=1,this._lastScaleY=1;return t.filterBackend||=t.initFilterBackend(),t.filterBackend.applyFilters(e,this._originalElement,r,i,this._element,this.cacheKey),(this._originalElement.width!==this._element.width||this._originalElement.height!==this._element.height)&&(this._filterScalingX=this._element.width/this._originalElement.width,this._filterScalingY=this._element.height/this._originalElement.height),this},_render:function(e){t.util.setImageSmoothing(e,this.imageSmoothing),this.isMoving!==!0&&this.resizeFilter&&this._needsResize()&&this.applyResizeFilters(),this._stroke(e),this._renderPaintInOrder(e)},drawCacheOnCanvas:function(e){t.util.setImageSmoothing(e,this.imageSmoothing),t.Object.prototype.drawCacheOnCanvas.call(this,e)},shouldCache:function(){return this.needsItsOwnCache()},_renderFill:function(e){var t=this._element;if(t){var n=this._filterScalingX,r=this._filterScalingY,i=this.width,a=this.height,o=Math.min,s=Math.max,c=s(this.cropX,0),l=s(this.cropY,0),u=t.naturalWidth||t.width,d=t.naturalHeight||t.height,f=c*n,p=l*r,m=o(i*n,u-f),h=o(a*r,d-p),g=-i/2,_=-a/2,v=o(i,u/n-c),y=o(a,d/r-l);t&&e.drawImage(t,f,p,m,h,g,_,v,y)}},_needsResize:function(){var e=this.getTotalObjectScaling();return e.scaleX!==this._lastScaleX||e.scaleY!==this._lastScaleY},_resetWidthHeight:function(){this.set(this.getOriginalSize())},_initElement:function(e,n){this.setElement(t.util.getById(e),n),t.util.addClass(this.getElement(),t.Image.CSS_CANVAS)},_initConfig:function(e){e||={},this.setOptions(e),this._setWidthHeight(e)},_initFilters:function(e,n){e&&e.length?t.util.enlivenObjects(e,function(e){n&&n(e)},`fabric.Image.filters`):n&&n()},_setWidthHeight:function(e){e||={};var t=this.getElement();this.width=e.width||t.naturalWidth||t.width||0,this.height=e.height||t.naturalHeight||t.height||0},parsePreserveAspectRatioAttribute:function(){var e=t.util.parsePreserveAspectRatioAttribute(this.preserveAspectRatio||``),n=this._element.width,r=this._element.height,i=1,a=1,o=0,s=0,c=0,l=0,u,d=this.width,f=this.height,p={width:d,height:f};return e&&(e.alignX!==`none`||e.alignY!==`none`)?(e.meetOrSlice===`meet`&&(i=a=t.util.findScaleToFit(this._element,p),u=(d-n*i)/2,e.alignX===`Min`&&(o=-u),e.alignX===`Max`&&(o=u),u=(f-r*a)/2,e.alignY===`Min`&&(s=-u),e.alignY===`Max`&&(s=u)),e.meetOrSlice===`slice`&&(i=a=t.util.findScaleToCover(this._element,p),u=n-d/i,e.alignX===`Mid`&&(c=u/2),e.alignX===`Max`&&(c=u),u=r-f/a,e.alignY===`Mid`&&(l=u/2),e.alignY===`Max`&&(l=u),n=d/i,r=f/a)):(i=d/n,a=f/r),{width:n,height:r,scaleX:i,scaleY:a,offsetLeft:o,offsetTop:s,cropX:c,cropY:l}}}),t.Image.CSS_CANVAS=`canvas-img`,t.Image.prototype.getSvgSrc=t.Image.prototype.getSrc,t.Image.fromObject=function(e,n){var r=t.util.object.clone(e);t.util.loadImage(r.src,function(e,i){if(i){n&&n(null,!0);return}t.Image.prototype._initFilters.call(r,r.filters,function(i){r.filters=i||[],t.Image.prototype._initFilters.call(r,[r.resizeFilter],function(i){r.resizeFilter=i[0],t.util.enlivenObjectEnlivables(r,r,function(){n(new t.Image(e,r),!1)})})})},null,r.crossOrigin)},t.Image.fromURL=function(e,n,r){t.util.loadImage(e,function(e,i){n&&n(new t.Image(e,r),i)},null,r&&r.crossOrigin)},t.Image.ATTRIBUTE_NAMES=t.SHARED_ATTRIBUTES.concat(`x y width height preserveAspectRatio xlink:href crossOrigin image-rendering`.split(` `)),t.Image.fromElement=function(e,r,i){var a=t.parseAttributes(e,t.Image.ATTRIBUTE_NAMES);t.Image.fromURL(a[`xlink:href`],r,n(i?t.util.object.clone(i):{},a))}})(e),t.util.object.extend(t.Object.prototype,{_getAngleValueForStraighten:function(){var e=this.angle%360;return e>0?Math.round((e-1)/90)*90:Math.round(e/90)*90},straighten:function(){return this.rotate(this._getAngleValueForStraighten())},fxStraighten:function(e){e||={};var n=function(){},r=e.onComplete||n,i=e.onChange||n,a=this;return t.util.animate({target:this,startValue:this.get(`angle`),endValue:this._getAngleValueForStraighten(),duration:this.FX_DURATION,onChange:function(e){a.rotate(e),i()},onComplete:function(){a.setCoords(),r()}})}}),t.util.object.extend(t.StaticCanvas.prototype,{straightenObject:function(e){return e.straighten(),this.requestRenderAll(),this},fxStraightenObject:function(e){return e.fxStraighten({onChange:this.requestRenderAllBound})}}),(function(){function e(e,t){var n=`precision `+t+` float;
-void main(){}`,r=e.createShader(e.FRAGMENT_SHADER);return e.shaderSource(r,n),e.compileShader(r),!!e.getShaderParameter(r,e.COMPILE_STATUS)}t.isWebglSupported=function(n){if(t.isLikelyNode)return!1;n||=t.WebglFilterBackend.prototype.tileSize;var r=document.createElement(`canvas`),i=r.getContext(`webgl`)||r.getContext(`experimental-webgl`),a=!1;if(i){t.maxTextureSize=i.getParameter(i.MAX_TEXTURE_SIZE),a=t.maxTextureSize>=n;for(var o=[`highp`,`mediump`,`lowp`],s=0;s<3;s++)if(e(i,o[s])){t.webGlPrecision=o[s];break}}return this.isSupported=a,a},t.WebglFilterBackend=n;function n(e){e&&e.tileSize&&(this.tileSize=e.tileSize),this.setupGLContext(this.tileSize,this.tileSize),this.captureGPUInfo()}n.prototype={tileSize:2048,resources:{},setupGLContext:function(e,t){this.dispose(),this.createWebGLCanvas(e,t),this.aPosition=new Float32Array([0,0,0,1,1,0,1,1]),this.chooseFastestCopyGLTo2DMethod(e,t)},chooseFastestCopyGLTo2DMethod:function(e,n){var r=window.performance!==void 0,o;try{new ImageData(1,1),o=!0}catch{o=!1}if(r&&o&&typeof ArrayBuffer<`u`&&typeof Uint8ClampedArray<`u`){var s=t.util.createCanvasElement(),c=new ArrayBuffer(e*n*4);if(t.forceGLPutImageData){this.imageBuffer=c,this.copyGLTo2D=a;return}var l={imageBuffer:c,destinationWidth:e,destinationHeight:n,targetCanvas:s},u,d,f;s.width=e,s.height=n,u=window.performance.now(),i.call(l,this.gl,l),d=window.performance.now()-u,u=window.performance.now(),a.call(l,this.gl,l),f=window.performance.now()-u,d>f?(this.imageBuffer=c,this.copyGLTo2D=a):this.copyGLTo2D=i}},createWebGLCanvas:function(e,n){var r=t.util.createCanvasElement();r.width=e,r.height=n;var i={alpha:!0,premultipliedAlpha:!1,depth:!1,stencil:!1,antialias:!1},a=r.getContext(`webgl`,i);a||=r.getContext(`experimental-webgl`,i),a&&(a.clearColor(0,0,0,0),this.canvas=r,this.gl=a)},applyFilters:function(e,t,n,i,a,o){var s=this.gl,c;o&&(c=this.getCachedTexture(o,t));var l={originalWidth:t.width||t.originalWidth,originalHeight:t.height||t.originalHeight,sourceWidth:n,sourceHeight:i,destinationWidth:n,destinationHeight:i,context:s,sourceTexture:this.createTexture(s,n,i,!c&&t),targetTexture:this.createTexture(s,n,i),originalTexture:c||this.createTexture(s,n,i,!c&&t),passes:e.length,webgl:!0,aPosition:this.aPosition,programCache:this.programCache,pass:0,filterBackend:this,targetCanvas:a},u=s.createFramebuffer();return s.bindFramebuffer(s.FRAMEBUFFER,u),e.forEach(function(e){e&&e.applyTo(l)}),r(l),this.copyGLTo2D(s,l),s.bindTexture(s.TEXTURE_2D,null),s.deleteTexture(l.sourceTexture),s.deleteTexture(l.targetTexture),s.deleteFramebuffer(u),a.getContext(`2d`).setTransform(1,0,0,1,0,0),l},dispose:function(){this.canvas&&(this.canvas=null,this.gl=null),this.clearWebGLCaches()},clearWebGLCaches:function(){this.programCache={},this.textureCache={}},createTexture:function(e,t,n,r,i){var a=e.createTexture();return e.bindTexture(e.TEXTURE_2D,a),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_MAG_FILTER,i||e.NEAREST),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_MIN_FILTER,i||e.NEAREST),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_WRAP_S,e.CLAMP_TO_EDGE),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_WRAP_T,e.CLAMP_TO_EDGE),r?e.texImage2D(e.TEXTURE_2D,0,e.RGBA,e.RGBA,e.UNSIGNED_BYTE,r):e.texImage2D(e.TEXTURE_2D,0,e.RGBA,t,n,0,e.RGBA,e.UNSIGNED_BYTE,null),a},getCachedTexture:function(e,t){if(this.textureCache[e])return this.textureCache[e];var n=this.createTexture(this.gl,t.width,t.height,t);return this.textureCache[e]=n,n},evictCachesForKey:function(e){this.textureCache[e]&&(this.gl.deleteTexture(this.textureCache[e]),delete this.textureCache[e])},copyGLTo2D:i,captureGPUInfo:function(){if(this.gpuInfo)return this.gpuInfo;var e=this.gl,t={renderer:``,vendor:``};if(!e)return t;var n=e.getExtension(`WEBGL_debug_renderer_info`);if(n){var r=e.getParameter(n.UNMASKED_RENDERER_WEBGL),i=e.getParameter(n.UNMASKED_VENDOR_WEBGL);r&&(t.renderer=r.toLowerCase()),i&&(t.vendor=i.toLowerCase())}return this.gpuInfo=t,t}}})();function r(e){var t=e.targetCanvas,n=t.width,r=t.height,i=e.destinationWidth,a=e.destinationHeight;(n!==i||r!==a)&&(t.width=i,t.height=a)}function i(e,t){var n=e.canvas,r=t.targetCanvas,i=r.getContext(`2d`);i.translate(0,r.height),i.scale(1,-1);var a=n.height-r.height;i.drawImage(n,0,a,r.width,r.height,0,0,r.width,r.height)}function a(e,t){var n=t.targetCanvas.getContext(`2d`),r=t.destinationWidth,i=t.destinationHeight,a=r*i*4,o=new Uint8Array(this.imageBuffer,0,a),s=new Uint8ClampedArray(this.imageBuffer,0,a);e.readPixels(0,0,r,i,e.RGBA,e.UNSIGNED_BYTE,o);var c=new ImageData(s,r,i);n.putImageData(c,0,0)}(function(){var e=function(){};t.Canvas2dFilterBackend=n;function n(){}n.prototype={evictCachesForKey:e,dispose:e,clearWebGLCaches:e,resources:{},applyFilters:function(e,t,n,r,i){var a=i.getContext(`2d`);a.drawImage(t,0,0,n,r);var o={sourceWidth:n,sourceHeight:r,imageData:a.getImageData(0,0,n,r),originalEl:t,originalImageData:a.getImageData(0,0,n,r),canvasEl:i,ctx:a,filterBackend:this};return e.forEach(function(e){e.applyTo(o)}),(o.imageData.width!==n||o.imageData.height!==r)&&(i.width=o.imageData.width,i.height=o.imageData.height),a.putImageData(o.imageData,0,0),o}}})(),t.Image=t.Image||{},t.Image.filters=t.Image.filters||{},t.Image.filters.BaseFilter=t.util.createClass({type:`BaseFilter`,vertexSource:`attribute vec2 aPosition;
-varying vec2 vTexCoord;
-void main() {
-vTexCoord = aPosition;
-gl_Position = vec4(aPosition * 2.0 - 1.0, 0.0, 1.0);
-}`,fragmentSource:`precision highp float;
-varying vec2 vTexCoord;
-uniform sampler2D uTexture;
-void main() {
-gl_FragColor = texture2D(uTexture, vTexCoord);
-}`,initialize:function(e){e&&this.setOptions(e)},setOptions:function(e){for(var t in e)this[t]=e[t]},createProgram:function(e,n,r){n||=this.fragmentSource,r||=this.vertexSource,t.webGlPrecision!==`highp`&&(n=n.replace(/precision highp float/g,`precision `+t.webGlPrecision+` float`));var i=e.createShader(e.VERTEX_SHADER);if(e.shaderSource(i,r),e.compileShader(i),!e.getShaderParameter(i,e.COMPILE_STATUS))throw Error(`Vertex shader compile error for `+this.type+`: `+e.getShaderInfoLog(i));var a=e.createShader(e.FRAGMENT_SHADER);if(e.shaderSource(a,n),e.compileShader(a),!e.getShaderParameter(a,e.COMPILE_STATUS))throw Error(`Fragment shader compile error for `+this.type+`: `+e.getShaderInfoLog(a));var o=e.createProgram();if(e.attachShader(o,i),e.attachShader(o,a),e.linkProgram(o),!e.getProgramParameter(o,e.LINK_STATUS))throw Error('Shader link error for "${this.type}" '+e.getProgramInfoLog(o));var s=this.getAttributeLocations(e,o),c=this.getUniformLocations(e,o)||{};return c.uStepW=e.getUniformLocation(o,`uStepW`),c.uStepH=e.getUniformLocation(o,`uStepH`),{program:o,attributeLocations:s,uniformLocations:c}},getAttributeLocations:function(e,t){return{aPosition:e.getAttribLocation(t,`aPosition`)}},getUniformLocations:function(){return{}},sendAttributeData:function(e,t,n){var r=t.aPosition,i=e.createBuffer();e.bindBuffer(e.ARRAY_BUFFER,i),e.enableVertexAttribArray(r),e.vertexAttribPointer(r,2,e.FLOAT,!1,0,0),e.bufferData(e.ARRAY_BUFFER,n,e.STATIC_DRAW)},_setupFrameBuffer:function(e){var t=e.context,n,r;e.passes>1?(n=e.destinationWidth,r=e.destinationHeight,(e.sourceWidth!==n||e.sourceHeight!==r)&&(t.deleteTexture(e.targetTexture),e.targetTexture=e.filterBackend.createTexture(t,n,r)),t.framebufferTexture2D(t.FRAMEBUFFER,t.COLOR_ATTACHMENT0,t.TEXTURE_2D,e.targetTexture,0)):(t.bindFramebuffer(t.FRAMEBUFFER,null),t.finish())},_swapTextures:function(e){e.passes--,e.pass++;var t=e.targetTexture;e.targetTexture=e.sourceTexture,e.sourceTexture=t},isNeutralState:function(){var e=this.mainParameter,n=t.Image.filters[this.type].prototype;if(e)if(Array.isArray(n[e])){for(var r=n[e].length;r--;)if(this[e][r]!==n[e][r])return!1;return!0}else return n[e]===this[e];else return!1},applyTo:function(e){e.webgl?(this._setupFrameBuffer(e),this.applyToWebGL(e),this._swapTextures(e)):this.applyTo2d(e)},retrieveShader:function(e){return e.programCache.hasOwnProperty(this.type)||(e.programCache[this.type]=this.createProgram(e.context)),e.programCache[this.type]},applyToWebGL:function(e){var t=e.context,n=this.retrieveShader(e);e.pass===0&&e.originalTexture?t.bindTexture(t.TEXTURE_2D,e.originalTexture):t.bindTexture(t.TEXTURE_2D,e.sourceTexture),t.useProgram(n.program),this.sendAttributeData(t,n.attributeLocations,e.aPosition),t.uniform1f(n.uniformLocations.uStepW,1/e.sourceWidth),t.uniform1f(n.uniformLocations.uStepH,1/e.sourceHeight),this.sendUniformData(t,n.uniformLocations),t.viewport(0,0,e.destinationWidth,e.destinationHeight),t.drawArrays(t.TRIANGLE_STRIP,0,4)},bindAdditionalTexture:function(e,t,n){e.activeTexture(n),e.bindTexture(e.TEXTURE_2D,t),e.activeTexture(e.TEXTURE0)},unbindAdditionalTexture:function(e,t){e.activeTexture(t),e.bindTexture(e.TEXTURE_2D,null),e.activeTexture(e.TEXTURE0)},getMainParameter:function(){return this[this.mainParameter]},setMainParameter:function(e){this[this.mainParameter]=e},sendUniformData:function(){},createHelpLayer:function(e){if(!e.helpLayer){var t=document.createElement(`canvas`);t.width=e.sourceWidth,t.height=e.sourceHeight,e.helpLayer=t}},toObject:function(){var e={type:this.type},t=this.mainParameter;return t&&(e[t]=this[t]),e},toJSON:function(){return this.toObject()}}),t.Image.filters.BaseFilter.fromObject=function(e,n){var r=new t.Image.filters[e.type](e);return n&&n(r),r},(function(e){var t=e.fabric||={},n=t.Image.filters,r=t.util.createClass;n.ColorMatrix=r(n.BaseFilter,{type:`ColorMatrix`,fragmentSource:`precision highp float;
-uniform sampler2D uTexture;
-varying vec2 vTexCoord;
-uniform mat4 uColorMatrix;
-uniform vec4 uConstants;
-void main() {
-vec4 color = texture2D(uTexture, vTexCoord);
-color *= uColorMatrix;
-color += uConstants;
-gl_FragColor = color;
-}`,matrix:[1,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,1,0],mainParameter:`matrix`,colorsOnly:!0,initialize:function(e){this.callSuper(`initialize`,e),this.matrix=this.matrix.slice(0)},applyTo2d:function(e){var t=e.imageData.data,n=t.length,r=this.matrix,i,a,o,s,c,l=this.colorsOnly;for(c=0;c<n;c+=4)i=t[c],a=t[c+1],o=t[c+2],l?(t[c]=i*r[0]+a*r[1]+o*r[2]+r[4]*255,t[c+1]=i*r[5]+a*r[6]+o*r[7]+r[9]*255,t[c+2]=i*r[10]+a*r[11]+o*r[12]+r[14]*255):(s=t[c+3],t[c]=i*r[0]+a*r[1]+o*r[2]+s*r[3]+r[4]*255,t[c+1]=i*r[5]+a*r[6]+o*r[7]+s*r[8]+r[9]*255,t[c+2]=i*r[10]+a*r[11]+o*r[12]+s*r[13]+r[14]*255,t[c+3]=i*r[15]+a*r[16]+o*r[17]+s*r[18]+r[19]*255)},getUniformLocations:function(e,t){return{uColorMatrix:e.getUniformLocation(t,`uColorMatrix`),uConstants:e.getUniformLocation(t,`uConstants`)}},sendUniformData:function(e,t){var n=this.matrix,r=[n[0],n[1],n[2],n[3],n[5],n[6],n[7],n[8],n[10],n[11],n[12],n[13],n[15],n[16],n[17],n[18]],i=[n[4],n[9],n[14],n[19]];e.uniformMatrix4fv(t.uColorMatrix,!1,r),e.uniform4fv(t.uConstants,i)}}),t.Image.filters.ColorMatrix.fromObject=t.Image.filters.BaseFilter.fromObject})(e),(function(e){var t=e.fabric||={},n=t.Image.filters,r=t.util.createClass;n.Brightness=r(n.BaseFilter,{type:`Brightness`,fragmentSource:`precision highp float;
-uniform sampler2D uTexture;
-uniform float uBrightness;
-varying vec2 vTexCoord;
-void main() {
-vec4 color = texture2D(uTexture, vTexCoord);
-color.rgb += uBrightness;
-gl_FragColor = color;
-}`,brightness:0,mainParameter:`brightness`,applyTo2d:function(e){if(this.brightness!==0){var t=e.imageData.data,n,r=t.length,i=Math.round(this.brightness*255);for(n=0;n<r;n+=4)t[n]=t[n]+i,t[n+1]=t[n+1]+i,t[n+2]=t[n+2]+i}},getUniformLocations:function(e,t){return{uBrightness:e.getUniformLocation(t,`uBrightness`)}},sendUniformData:function(e,t){e.uniform1f(t.uBrightness,this.brightness)}}),t.Image.filters.Brightness.fromObject=t.Image.filters.BaseFilter.fromObject})(e),(function(e){var t=e.fabric||={},n=t.util.object.extend,r=t.Image.filters,i=t.util.createClass;r.Convolute=i(r.BaseFilter,{type:`Convolute`,opaque:!1,matrix:[0,0,0,0,1,0,0,0,0],fragmentSource:{Convolute_3_1:`precision highp float;
-uniform sampler2D uTexture;
-uniform float uMatrix[9];
-uniform float uStepW;
-uniform float uStepH;
-varying vec2 vTexCoord;
-void main() {
-vec4 color = vec4(0, 0, 0, 0);
-for (float h = 0.0; h < 3.0; h+=1.0) {
-for (float w = 0.0; w < 3.0; w+=1.0) {
-vec2 matrixPos = vec2(uStepW * (w - 1), uStepH * (h - 1));
-color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 3.0 + w)];
-}
-}
-gl_FragColor = color;
-}`,Convolute_3_0:`precision highp float;
-uniform sampler2D uTexture;
-uniform float uMatrix[9];
-uniform float uStepW;
-uniform float uStepH;
-varying vec2 vTexCoord;
-void main() {
-vec4 color = vec4(0, 0, 0, 1);
-for (float h = 0.0; h < 3.0; h+=1.0) {
-for (float w = 0.0; w < 3.0; w+=1.0) {
-vec2 matrixPos = vec2(uStepW * (w - 1.0), uStepH * (h - 1.0));
-color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 3.0 + w)];
-}
-}
-float alpha = texture2D(uTexture, vTexCoord).a;
-gl_FragColor = color;
-gl_FragColor.a = alpha;
-}`,Convolute_5_1:`precision highp float;
-uniform sampler2D uTexture;
-uniform float uMatrix[25];
-uniform float uStepW;
-uniform float uStepH;
-varying vec2 vTexCoord;
-void main() {
-vec4 color = vec4(0, 0, 0, 0);
-for (float h = 0.0; h < 5.0; h+=1.0) {
-for (float w = 0.0; w < 5.0; w+=1.0) {
-vec2 matrixPos = vec2(uStepW * (w - 2.0), uStepH * (h - 2.0));
-color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 5.0 + w)];
-}
-}
-gl_FragColor = color;
-}`,Convolute_5_0:`precision highp float;
-uniform sampler2D uTexture;
-uniform float uMatrix[25];
-uniform float uStepW;
-uniform float uStepH;
-varying vec2 vTexCoord;
-void main() {
-vec4 color = vec4(0, 0, 0, 1);
-for (float h = 0.0; h < 5.0; h+=1.0) {
-for (float w = 0.0; w < 5.0; w+=1.0) {
-vec2 matrixPos = vec2(uStepW * (w - 2.0), uStepH * (h - 2.0));
-color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 5.0 + w)];
-}
-}
-float alpha = texture2D(uTexture, vTexCoord).a;
-gl_FragColor = color;
-gl_FragColor.a = alpha;
-}`,Convolute_7_1:`precision highp float;
-uniform sampler2D uTexture;
-uniform float uMatrix[49];
-uniform float uStepW;
-uniform float uStepH;
-varying vec2 vTexCoord;
-void main() {
-vec4 color = vec4(0, 0, 0, 0);
-for (float h = 0.0; h < 7.0; h+=1.0) {
-for (float w = 0.0; w < 7.0; w+=1.0) {
-vec2 matrixPos = vec2(uStepW * (w - 3.0), uStepH * (h - 3.0));
-color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 7.0 + w)];
-}
-}
-gl_FragColor = color;
-}`,Convolute_7_0:`precision highp float;
-uniform sampler2D uTexture;
-uniform float uMatrix[49];
-uniform float uStepW;
-uniform float uStepH;
-varying vec2 vTexCoord;
-void main() {
-vec4 color = vec4(0, 0, 0, 1);
-for (float h = 0.0; h < 7.0; h+=1.0) {
-for (float w = 0.0; w < 7.0; w+=1.0) {
-vec2 matrixPos = vec2(uStepW * (w - 3.0), uStepH * (h - 3.0));
-color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 7.0 + w)];
-}
-}
-float alpha = texture2D(uTexture, vTexCoord).a;
-gl_FragColor = color;
-gl_FragColor.a = alpha;
-}`,Convolute_9_1:`precision highp float;
-uniform sampler2D uTexture;
-uniform float uMatrix[81];
-uniform float uStepW;
-uniform float uStepH;
-varying vec2 vTexCoord;
-void main() {
-vec4 color = vec4(0, 0, 0, 0);
-for (float h = 0.0; h < 9.0; h+=1.0) {
-for (float w = 0.0; w < 9.0; w+=1.0) {
-vec2 matrixPos = vec2(uStepW * (w - 4.0), uStepH * (h - 4.0));
-color += texture2D(uTexture, vTexCoord + matrixPos) * uMatrix[int(h * 9.0 + w)];
-}
-}
-gl_FragColor = color;
-}`,Convolute_9_0:`precision highp float;
-uniform sampler2D uTexture;
-uniform float uMatrix[81];
-uniform float uStepW;
-uniform float uStepH;
-varying vec2 vTexCoord;
-void main() {
-vec4 color = vec4(0, 0, 0, 1);
-for (float h = 0.0; h < 9.0; h+=1.0) {
-for (float w = 0.0; w < 9.0; w+=1.0) {
-vec2 matrixPos = vec2(uStepW * (w - 4.0), uStepH * (h - 4.0));
-color.rgb += texture2D(uTexture, vTexCoord + matrixPos).rgb * uMatrix[int(h * 9.0 + w)];
-}
-}
-float alpha = texture2D(uTexture, vTexCoord).a;
-gl_FragColor = color;
-gl_FragColor.a = alpha;
-}`},retrieveShader:function(e){var t=Math.sqrt(this.matrix.length),n=this.type+`_`+t+`_`+ +!!this.opaque,r=this.fragmentSource[n];return e.programCache.hasOwnProperty(n)||(e.programCache[n]=this.createProgram(e.context,r)),e.programCache[n]},applyTo2d:function(e){var t=e.imageData,n=t.data,r=this.matrix,i=Math.round(Math.sqrt(r.length)),a=Math.floor(i/2),o=t.width,s=t.height,c=e.ctx.createImageData(o,s),l=c.data,u=+!!this.opaque,d,f,p,m,h,g,_,v,y,b,x,S,C;for(x=0;x<s;x++)for(b=0;b<o;b++){for(h=(x*o+b)*4,d=0,f=0,p=0,m=0,C=0;C<i;C++)for(S=0;S<i;S++)_=x+C-a,g=b+S-a,!(_<0||_>=s||g<0||g>=o)&&(v=(_*o+g)*4,y=r[C*i+S],d+=n[v]*y,f+=n[v+1]*y,p+=n[v+2]*y,u||(m+=n[v+3]*y));l[h]=d,l[h+1]=f,l[h+2]=p,u?l[h+3]=n[h+3]:l[h+3]=m}e.imageData=c},getUniformLocations:function(e,t){return{uMatrix:e.getUniformLocation(t,`uMatrix`),uOpaque:e.getUniformLocation(t,`uOpaque`),uHalfSize:e.getUniformLocation(t,`uHalfSize`),uSize:e.getUniformLocation(t,`uSize`)}},sendUniformData:function(e,t){e.uniform1fv(t.uMatrix,this.matrix)},toObject:function(){return n(this.callSuper(`toObject`),{opaque:this.opaque,matrix:this.matrix})}}),t.Image.filters.Convolute.fromObject=t.Image.filters.BaseFilter.fromObject})(e),(function(e){var t=e.fabric||={},n=t.Image.filters,r=t.util.createClass;n.Grayscale=r(n.BaseFilter,{type:`Grayscale`,fragmentSource:{average:`precision highp float;
-uniform sampler2D uTexture;
-varying vec2 vTexCoord;
-void main() {
-vec4 color = texture2D(uTexture, vTexCoord);
-float average = (color.r + color.b + color.g) / 3.0;
-gl_FragColor = vec4(average, average, average, color.a);
-}`,lightness:`precision highp float;
-uniform sampler2D uTexture;
-uniform int uMode;
-varying vec2 vTexCoord;
-void main() {
-vec4 col = texture2D(uTexture, vTexCoord);
-float average = (max(max(col.r, col.g),col.b) + min(min(col.r, col.g),col.b)) / 2.0;
-gl_FragColor = vec4(average, average, average, col.a);
-}`,luminosity:`precision highp float;
-uniform sampler2D uTexture;
-uniform int uMode;
-varying vec2 vTexCoord;
-void main() {
-vec4 col = texture2D(uTexture, vTexCoord);
-float average = 0.21 * col.r + 0.72 * col.g + 0.07 * col.b;
-gl_FragColor = vec4(average, average, average, col.a);
-}`},mode:`average`,mainParameter:`mode`,applyTo2d:function(e){var t=e.imageData.data,n,r=t.length,i,a=this.mode;for(n=0;n<r;n+=4)a===`average`?i=(t[n]+t[n+1]+t[n+2])/3:a===`lightness`?i=(Math.min(t[n],t[n+1],t[n+2])+Math.max(t[n],t[n+1],t[n+2]))/2:a===`luminosity`&&(i=.21*t[n]+.72*t[n+1]+.07*t[n+2]),t[n]=i,t[n+1]=i,t[n+2]=i},retrieveShader:function(e){var t=this.type+`_`+this.mode;if(!e.programCache.hasOwnProperty(t)){var n=this.fragmentSource[this.mode];e.programCache[t]=this.createProgram(e.context,n)}return e.programCache[t]},getUniformLocations:function(e,t){return{uMode:e.getUniformLocation(t,`uMode`)}},sendUniformData:function(e,t){e.uniform1i(t.uMode,1)},isNeutralState:function(){return!1}}),t.Image.filters.Grayscale.fromObject=t.Image.filters.BaseFilter.fromObject})(e),(function(e){var t=e.fabric||={},n=t.Image.filters,r=t.util.createClass;n.Invert=r(n.BaseFilter,{type:`Invert`,fragmentSource:`precision highp float;
-uniform sampler2D uTexture;
-uniform int uInvert;
-varying vec2 vTexCoord;
-void main() {
-vec4 color = texture2D(uTexture, vTexCoord);
-if (uInvert == 1) {
-gl_FragColor = vec4(1.0 - color.r,1.0 -color.g,1.0 -color.b,color.a);
-} else {
-gl_FragColor = color;
-}
-}`,invert:!0,mainParameter:`invert`,applyTo2d:function(e){var t=e.imageData.data,n,r=t.length;for(n=0;n<r;n+=4)t[n]=255-t[n],t[n+1]=255-t[n+1],t[n+2]=255-t[n+2]},isNeutralState:function(){return!this.invert},getUniformLocations:function(e,t){return{uInvert:e.getUniformLocation(t,`uInvert`)}},sendUniformData:function(e,t){e.uniform1i(t.uInvert,this.invert)}}),t.Image.filters.Invert.fromObject=t.Image.filters.BaseFilter.fromObject})(e),(function(e){var t=e.fabric||={},n=t.util.object.extend,r=t.Image.filters,i=t.util.createClass;r.Noise=i(r.BaseFilter,{type:`Noise`,fragmentSource:`precision highp float;
-uniform sampler2D uTexture;
-uniform float uStepH;
-uniform float uNoise;
-uniform float uSeed;
-varying vec2 vTexCoord;
-float rand(vec2 co, float seed, float vScale) {
-return fract(sin(dot(co.xy * vScale ,vec2(12.9898 , 78.233))) * 43758.5453 * (seed + 0.01) / 2.0);
-}
-void main() {
-vec4 color = texture2D(uTexture, vTexCoord);
-color.rgb += (0.5 - rand(vTexCoord, uSeed, 0.1 / uStepH)) * uNoise;
-gl_FragColor = color;
-}`,mainParameter:`noise`,noise:0,applyTo2d:function(e){if(this.noise!==0){var t=e.imageData.data,n,r=t.length,i=this.noise,a;for(n=0,r=t.length;n<r;n+=4)a=(.5-Math.random())*i,t[n]+=a,t[n+1]+=a,t[n+2]+=a}},getUniformLocations:function(e,t){return{uNoise:e.getUniformLocation(t,`uNoise`),uSeed:e.getUniformLocation(t,`uSeed`)}},sendUniformData:function(e,t){e.uniform1f(t.uNoise,this.noise/255),e.uniform1f(t.uSeed,Math.random())},toObject:function(){return n(this.callSuper(`toObject`),{noise:this.noise})}}),t.Image.filters.Noise.fromObject=t.Image.filters.BaseFilter.fromObject})(e),(function(e){var t=e.fabric||={},n=t.Image.filters,r=t.util.createClass;n.Pixelate=r(n.BaseFilter,{type:`Pixelate`,blocksize:4,mainParameter:`blocksize`,fragmentSource:`precision highp float;
-uniform sampler2D uTexture;
-uniform float uBlocksize;
-uniform float uStepW;
-uniform float uStepH;
-varying vec2 vTexCoord;
-void main() {
-float blockW = uBlocksize * uStepW;
-float blockH = uBlocksize * uStepW;
-int posX = int(vTexCoord.x / blockW);
-int posY = int(vTexCoord.y / blockH);
-float fposX = float(posX);
-float fposY = float(posY);
-vec2 squareCoords = vec2(fposX * blockW, fposY * blockH);
-vec4 color = texture2D(uTexture, squareCoords);
-gl_FragColor = color;
-}`,applyTo2d:function(e){var t=e.imageData,n=t.data,r=t.height,i=t.width,a,o,s,c,l,u,d,f,p,m,h;for(o=0;o<r;o+=this.blocksize)for(s=0;s<i;s+=this.blocksize)for(a=o*4*i+s*4,c=n[a],l=n[a+1],u=n[a+2],d=n[a+3],m=Math.min(o+this.blocksize,r),h=Math.min(s+this.blocksize,i),f=o;f<m;f++)for(p=s;p<h;p++)a=f*4*i+p*4,n[a]=c,n[a+1]=l,n[a+2]=u,n[a+3]=d},isNeutralState:function(){return this.blocksize===1},getUniformLocations:function(e,t){return{uBlocksize:e.getUniformLocation(t,`uBlocksize`),uStepW:e.getUniformLocation(t,`uStepW`),uStepH:e.getUniformLocation(t,`uStepH`)}},sendUniformData:function(e,t){e.uniform1f(t.uBlocksize,this.blocksize)}}),t.Image.filters.Pixelate.fromObject=t.Image.filters.BaseFilter.fromObject})(e),(function(e){var t=e.fabric||={},n=t.util.object.extend,r=t.Image.filters,i=t.util.createClass;r.RemoveColor=i(r.BaseFilter,{type:`RemoveColor`,color:`#FFFFFF`,fragmentSource:`precision highp float;
-uniform sampler2D uTexture;
-uniform vec4 uLow;
-uniform vec4 uHigh;
-varying vec2 vTexCoord;
-void main() {
-gl_FragColor = texture2D(uTexture, vTexCoord);
-if(all(greaterThan(gl_FragColor.rgb,uLow.rgb)) && all(greaterThan(uHigh.rgb,gl_FragColor.rgb))) {
-gl_FragColor.a = 0.0;
-}
-}`,distance:.02,useAlpha:!1,applyTo2d:function(e){var n=e.imageData.data,r,i=this.distance*255,a,o,s,c=new t.Color(this.color).getSource(),l=[c[0]-i,c[1]-i,c[2]-i],u=[c[0]+i,c[1]+i,c[2]+i];for(r=0;r<n.length;r+=4)a=n[r],o=n[r+1],s=n[r+2],a>l[0]&&o>l[1]&&s>l[2]&&a<u[0]&&o<u[1]&&s<u[2]&&(n[r+3]=0)},getUniformLocations:function(e,t){return{uLow:e.getUniformLocation(t,`uLow`),uHigh:e.getUniformLocation(t,`uHigh`)}},sendUniformData:function(e,n){var r=new t.Color(this.color).getSource(),i=parseFloat(this.distance),a=[0+r[0]/255-i,0+r[1]/255-i,0+r[2]/255-i,1],o=[r[0]/255+i,r[1]/255+i,r[2]/255+i,1];e.uniform4fv(n.uLow,a),e.uniform4fv(n.uHigh,o)},toObject:function(){return n(this.callSuper(`toObject`),{color:this.color,distance:this.distance})}}),t.Image.filters.RemoveColor.fromObject=t.Image.filters.BaseFilter.fromObject})(e),(function(e){var t=e.fabric||={},n=t.Image.filters,r=t.util.createClass,i={Brownie:[.5997,.34553,-.27082,0,.186,-.0377,.86095,.15059,0,-.1449,.24113,-.07441,.44972,0,-.02965,0,0,0,1,0],Vintage:[.62793,.32021,-.03965,0,.03784,.02578,.64411,.03259,0,.02926,.0466,-.08512,.52416,0,.02023,0,0,0,1,0],Kodachrome:[1.12855,-.39673,-.03992,0,.24991,-.16404,1.08352,-.05498,0,.09698,-.16786,-.56034,1.60148,0,.13972,0,0,0,1,0],Technicolor:[1.91252,-.85453,-.09155,0,.04624,-.30878,1.76589,-.10601,0,-.27589,-.2311,-.75018,1.84759,0,.12137,0,0,0,1,0],Polaroid:[1.438,-.062,-.062,0,0,-.122,1.378,-.122,0,0,-.016,-.016,1.483,0,0,0,0,0,1,0],Sepia:[.393,.769,.189,0,0,.349,.686,.168,0,0,.272,.534,.131,0,0,0,0,0,1,0],BlackWhite:[1.5,1.5,1.5,0,-1,1.5,1.5,1.5,0,-1,1.5,1.5,1.5,0,-1,0,0,0,1,0]};for(var a in i)n[a]=r(n.ColorMatrix,{type:a,matrix:i[a],mainParameter:!1,colorsOnly:!0}),t.Image.filters[a].fromObject=t.Image.filters.BaseFilter.fromObject})(e),(function(e){var t=e.fabric,n=t.Image.filters,r=t.util.createClass;n.BlendColor=r(n.BaseFilter,{type:`BlendColor`,color:`#F95C63`,mode:`multiply`,alpha:1,fragmentSource:{multiply:`gl_FragColor.rgb *= uColor.rgb;
-`,screen:`gl_FragColor.rgb = 1.0 - (1.0 - gl_FragColor.rgb) * (1.0 - uColor.rgb);
-`,add:`gl_FragColor.rgb += uColor.rgb;
-`,diff:`gl_FragColor.rgb = abs(gl_FragColor.rgb - uColor.rgb);
-`,subtract:`gl_FragColor.rgb -= uColor.rgb;
-`,lighten:`gl_FragColor.rgb = max(gl_FragColor.rgb, uColor.rgb);
-`,darken:`gl_FragColor.rgb = min(gl_FragColor.rgb, uColor.rgb);
-`,exclusion:`gl_FragColor.rgb += uColor.rgb - 2.0 * (uColor.rgb * gl_FragColor.rgb);
-`,overlay:`if (uColor.r < 0.5) {
-gl_FragColor.r *= 2.0 * uColor.r;
-} else {
-gl_FragColor.r = 1.0 - 2.0 * (1.0 - gl_FragColor.r) * (1.0 - uColor.r);
-}
-if (uColor.g < 0.5) {
-gl_FragColor.g *= 2.0 * uColor.g;
-} else {
-gl_FragColor.g = 1.0 - 2.0 * (1.0 - gl_FragColor.g) * (1.0 - uColor.g);
-}
-if (uColor.b < 0.5) {
-gl_FragColor.b *= 2.0 * uColor.b;
-} else {
-gl_FragColor.b = 1.0 - 2.0 * (1.0 - gl_FragColor.b) * (1.0 - uColor.b);
-}
-`,tint:`gl_FragColor.rgb *= (1.0 - uColor.a);
-gl_FragColor.rgb += uColor.rgb;
-`},buildSource:function(e){return`precision highp float;
-uniform sampler2D uTexture;
-uniform vec4 uColor;
-varying vec2 vTexCoord;
-void main() {
-vec4 color = texture2D(uTexture, vTexCoord);
-gl_FragColor = color;
-if (color.a > 0.0) {
-`+this.fragmentSource[e]+`}
-}`},retrieveShader:function(e){var t=this.type+`_`+this.mode,n;return e.programCache.hasOwnProperty(t)||(n=this.buildSource(this.mode),e.programCache[t]=this.createProgram(e.context,n)),e.programCache[t]},applyTo2d:function(e){var n=e.imageData.data,r=n.length,i,a,o,s,c,l,u,d=1-this.alpha;u=new t.Color(this.color).getSource(),i=u[0]*this.alpha,a=u[1]*this.alpha,o=u[2]*this.alpha;for(var f=0;f<r;f+=4)switch(s=n[f],c=n[f+1],l=n[f+2],this.mode){case`multiply`:n[f]=s*i/255,n[f+1]=c*a/255,n[f+2]=l*o/255;break;case`screen`:n[f]=255-(255-s)*(255-i)/255,n[f+1]=255-(255-c)*(255-a)/255,n[f+2]=255-(255-l)*(255-o)/255;break;case`add`:n[f]=s+i,n[f+1]=c+a,n[f+2]=l+o;break;case`diff`:case`difference`:n[f]=Math.abs(s-i),n[f+1]=Math.abs(c-a),n[f+2]=Math.abs(l-o);break;case`subtract`:n[f]=s-i,n[f+1]=c-a,n[f+2]=l-o;break;case`darken`:n[f]=Math.min(s,i),n[f+1]=Math.min(c,a),n[f+2]=Math.min(l,o);break;case`lighten`:n[f]=Math.max(s,i),n[f+1]=Math.max(c,a),n[f+2]=Math.max(l,o);break;case`overlay`:n[f]=i<128?2*s*i/255:255-2*(255-s)*(255-i)/255,n[f+1]=a<128?2*c*a/255:255-2*(255-c)*(255-a)/255,n[f+2]=o<128?2*l*o/255:255-2*(255-l)*(255-o)/255;break;case`exclusion`:n[f]=i+s-2*i*s/255,n[f+1]=a+c-2*a*c/255,n[f+2]=o+l-2*o*l/255;break;case`tint`:n[f]=i+s*d,n[f+1]=a+c*d,n[f+2]=o+l*d}},getUniformLocations:function(e,t){return{uColor:e.getUniformLocation(t,`uColor`)}},sendUniformData:function(e,n){var r=new t.Color(this.color).getSource();r[0]=this.alpha*r[0]/255,r[1]=this.alpha*r[1]/255,r[2]=this.alpha*r[2]/255,r[3]=this.alpha,e.uniform4fv(n.uColor,r)},toObject:function(){return{type:this.type,color:this.color,mode:this.mode,alpha:this.alpha}}}),t.Image.filters.BlendColor.fromObject=t.Image.filters.BaseFilter.fromObject})(e),(function(e){var t=e.fabric,n=t.Image.filters,r=t.util.createClass;n.BlendImage=r(n.BaseFilter,{type:`BlendImage`,image:null,mode:`multiply`,alpha:1,vertexSource:`attribute vec2 aPosition;
-varying vec2 vTexCoord;
-varying vec2 vTexCoord2;
-uniform mat3 uTransformMatrix;
-void main() {
-vTexCoord = aPosition;
-vTexCoord2 = (uTransformMatrix * vec3(aPosition, 1.0)).xy;
-gl_Position = vec4(aPosition * 2.0 - 1.0, 0.0, 1.0);
-}`,fragmentSource:{multiply:`precision highp float;
-uniform sampler2D uTexture;
-uniform sampler2D uImage;
-uniform vec4 uColor;
-varying vec2 vTexCoord;
-varying vec2 vTexCoord2;
-void main() {
-vec4 color = texture2D(uTexture, vTexCoord);
-vec4 color2 = texture2D(uImage, vTexCoord2);
-color.rgba *= color2.rgba;
-gl_FragColor = color;
-}`,mask:`precision highp float;
-uniform sampler2D uTexture;
-uniform sampler2D uImage;
-uniform vec4 uColor;
-varying vec2 vTexCoord;
-varying vec2 vTexCoord2;
-void main() {
-vec4 color = texture2D(uTexture, vTexCoord);
-vec4 color2 = texture2D(uImage, vTexCoord2);
-color.a = color2.a;
-gl_FragColor = color;
-}`},retrieveShader:function(e){var t=this.type+`_`+this.mode,n=this.fragmentSource[this.mode];return e.programCache.hasOwnProperty(t)||(e.programCache[t]=this.createProgram(e.context,n)),e.programCache[t]},applyToWebGL:function(e){var t=e.context,n=this.createTexture(e.filterBackend,this.image);this.bindAdditionalTexture(t,n,t.TEXTURE1),this.callSuper(`applyToWebGL`,e),this.unbindAdditionalTexture(t,t.TEXTURE1)},createTexture:function(e,t){return e.getCachedTexture(t.cacheKey,t._element)},calculateMatrix:function(){var e=this.image,t=e._element.width,n=e._element.height;return[1/e.scaleX,0,0,0,1/e.scaleY,0,-e.left/t,-e.top/n,1]},applyTo2d:function(e){var n=e.imageData,r=e.filterBackend.resources,i=n.data,a=i.length,o=n.width,s=n.height,c,l,u,d,f,p,m,h,g,_,v=this.image,y;r.blendImage||=t.util.createCanvasElement(),g=r.blendImage,_=g.getContext(`2d`),g.width!==o||g.height!==s?(g.width=o,g.height=s):_.clearRect(0,0,o,s),_.setTransform(v.scaleX,0,0,v.scaleY,v.left,v.top),_.drawImage(v._element,0,0,o,s),y=_.getImageData(0,0,o,s).data;for(var b=0;b<a;b+=4)switch(f=i[b],p=i[b+1],m=i[b+2],h=i[b+3],c=y[b],l=y[b+1],u=y[b+2],d=y[b+3],this.mode){case`multiply`:i[b]=f*c/255,i[b+1]=p*l/255,i[b+2]=m*u/255,i[b+3]=h*d/255;break;case`mask`:i[b+3]=d;break}},getUniformLocations:function(e,t){return{uTransformMatrix:e.getUniformLocation(t,`uTransformMatrix`),uImage:e.getUniformLocation(t,`uImage`)}},sendUniformData:function(e,t){var n=this.calculateMatrix();e.uniform1i(t.uImage,1),e.uniformMatrix3fv(t.uTransformMatrix,!1,n)},toObject:function(){return{type:this.type,image:this.image&&this.image.toObject(),mode:this.mode,alpha:this.alpha}}}),t.Image.filters.BlendImage.fromObject=function(e,n){t.Image.fromObject(e.image,function(r){var i=t.util.object.clone(e);i.image=r,n(new t.Image.filters.BlendImage(i))})}})(e),(function(e){var t=e.fabric||={},n=Math.pow,r=Math.floor,i=Math.sqrt,a=Math.abs,o=Math.round,s=Math.sin,c=Math.ceil,l=t.Image.filters,u=t.util.createClass;l.Resize=u(l.BaseFilter,{type:`Resize`,resizeType:`hermite`,scaleX:1,scaleY:1,lanczosLobes:3,getUniformLocations:function(e,t){return{uDelta:e.getUniformLocation(t,`uDelta`),uTaps:e.getUniformLocation(t,`uTaps`)}},sendUniformData:function(e,t){e.uniform2fv(t.uDelta,this.horizontal?[1/this.width,0]:[0,1/this.height]),e.uniform1fv(t.uTaps,this.taps)},retrieveShader:function(e){var t=this.getFilterWindow(),n=this.type+`_`+t;if(!e.programCache.hasOwnProperty(n)){var r=this.generateShader(t);e.programCache[n]=this.createProgram(e.context,r)}return e.programCache[n]},getFilterWindow:function(){var e=this.tempScale;return Math.ceil(this.lanczosLobes/e)},getTaps:function(){for(var e=this.lanczosCreate(this.lanczosLobes),t=this.tempScale,n=this.getFilterWindow(),r=Array(n),i=1;i<=n;i++)r[i-1]=e(i*t);return r},generateShader:function(e){for(var t=Array(e),n=this.fragmentSourceTOP,e,r=1;r<=e;r++)t[r-1]=r+`.0 * uDelta`;return n+=`uniform float uTaps[`+e+`];
-`,n+=`void main() {
-`,n+=`  vec4 color = texture2D(uTexture, vTexCoord);
-`,n+=`  float sum = 1.0;
-`,t.forEach(function(e,t){n+=`  color += texture2D(uTexture, vTexCoord + `+e+`) * uTaps[`+t+`];
-`,n+=`  color += texture2D(uTexture, vTexCoord - `+e+`) * uTaps[`+t+`];
-`,n+=`  sum += 2.0 * uTaps[`+t+`];
-`}),n+=`  gl_FragColor = color / sum;
-`,n+=`}`,n},fragmentSourceTOP:`precision highp float;
-uniform sampler2D uTexture;
-uniform vec2 uDelta;
-varying vec2 vTexCoord;
-`,applyTo:function(e){e.webgl?(e.passes++,this.width=e.sourceWidth,this.horizontal=!0,this.dW=Math.round(this.width*this.scaleX),this.dH=e.sourceHeight,this.tempScale=this.dW/this.width,this.taps=this.getTaps(),e.destinationWidth=this.dW,this._setupFrameBuffer(e),this.applyToWebGL(e),this._swapTextures(e),e.sourceWidth=e.destinationWidth,this.height=e.sourceHeight,this.horizontal=!1,this.dH=Math.round(this.height*this.scaleY),this.tempScale=this.dH/this.height,this.taps=this.getTaps(),e.destinationHeight=this.dH,this._setupFrameBuffer(e),this.applyToWebGL(e),this._swapTextures(e),e.sourceHeight=e.destinationHeight):this.applyTo2d(e)},isNeutralState:function(){return this.scaleX===1&&this.scaleY===1},lanczosCreate:function(e){return function(t){if(t>=e||t<=-e)return 0;if(t<1.1920929e-7&&t>-1.1920929e-7)return 1;t*=Math.PI;var n=t/e;return s(t)/t*s(n)/n}},applyTo2d:function(e){var t=e.imageData,n=this.scaleX,r=this.scaleY;this.rcpScaleX=1/n,this.rcpScaleY=1/r;var i=t.width,a=t.height,s=o(i*n),c=o(a*r),l;this.resizeType===`sliceHack`?l=this.sliceByTwo(e,i,a,s,c):this.resizeType===`hermite`?l=this.hermiteFastResize(e,i,a,s,c):this.resizeType===`bilinear`?l=this.bilinearFiltering(e,i,a,s,c):this.resizeType===`lanczos`&&(l=this.lanczosResize(e,i,a,s,c)),e.imageData=l},sliceByTwo:function(e,n,i,a,o){var s=e.imageData,c=.5,l=!1,u=!1,d=n*c,f=i*c,p=t.filterBackend.resources,m,h,g=0,_=0,v=n,y=0;for(p.sliceByTwo||=document.createElement(`canvas`),m=p.sliceByTwo,(m.width<n*1.5||m.height<i)&&(m.width=n*1.5,m.height=i),h=m.getContext(`2d`),h.clearRect(0,0,n*1.5,i),h.putImageData(s,0,0),a=r(a),o=r(o);!l||!u;)n=d,i=f,a<r(d*c)?d=r(d*c):(d=a,l=!0),o<r(f*c)?f=r(f*c):(f=o,u=!0),h.drawImage(m,g,_,n,i,v,y,d,f),g=v,_=y,y+=f;return h.getImageData(g,_,a,o)},lanczosResize:function(e,t,o,s,l){function u(e){var c,w,T,E,D,O,k,A,j,M,N;for(S.x=(e+.5)*h,C.x=r(S.x),c=0;c<l;c++){for(S.y=(c+.5)*g,C.y=r(S.y),D=0,O=0,k=0,A=0,j=0,w=C.x-y;w<=C.x+y;w++)if(!(w<0||w>=t)){M=r(1e3*a(w-S.x)),x[M]||(x[M]={});for(var ee=C.y-b;ee<=C.y+b;ee++)ee<0||ee>=o||(N=r(1e3*a(ee-S.y)),x[M][N]||(x[M][N]=m(i(n(M*_,2)+n(N*v,2))/1e3)),T=x[M][N],T>0&&(E=(ee*t+w)*4,D+=T,O+=T*d[E],k+=T*d[E+1],A+=T*d[E+2],j+=T*d[E+3]))}E=(c*s+e)*4,p[E]=O/D,p[E+1]=k/D,p[E+2]=A/D,p[E+3]=j/D}return++e<s?u(e):f}var d=e.imageData.data,f=e.ctx.createImageData(s,l),p=f.data,m=this.lanczosCreate(this.lanczosLobes),h=this.rcpScaleX,g=this.rcpScaleY,_=2/this.rcpScaleX,v=2/this.rcpScaleY,y=c(h*this.lanczosLobes/2),b=c(g*this.lanczosLobes/2),x={},S={},C={};return u(0)},bilinearFiltering:function(e,t,n,i,a){var o,s,c,l,u,d,f,p,m,h,g,_,v=0,y,b=this.rcpScaleX,x=this.rcpScaleY,S=4*(t-1),C=e.imageData.data,w=e.ctx.createImageData(i,a),T=w.data;for(f=0;f<a;f++)for(p=0;p<i;p++)for(u=r(b*p),d=r(x*f),m=b*p-u,h=x*f-d,y=4*(d*t+u),g=0;g<4;g++)o=C[y+g],s=C[y+4+g],c=C[y+S+g],l=C[y+S+4+g],_=o*(1-m)*(1-h)+s*m*(1-h)+c*h*(1-m)+l*m*h,T[v++]=_;return w},hermiteFastResize:function(e,t,n,o,s){for(var l=this.rcpScaleX,u=this.rcpScaleY,d=c(l/2),f=c(u/2),p=e.imageData.data,m=e.ctx.createImageData(o,s),h=m.data,g=0;g<s;g++)for(var _=0;_<o;_++){for(var v=(_+g*o)*4,y=0,b=0,x=0,S=0,C=0,w=0,T=0,E=(g+.5)*u,D=r(g*u);D<(g+1)*u;D++)for(var O=a(E-(D+.5))/f,k=(_+.5)*l,A=O*O,j=r(_*l);j<(_+1)*l;j++){var M=a(k-(j+.5))/d,N=i(A+M*M);N>1&&N<-1||(y=2*N*N*N-3*N*N+1,y>0&&(M=4*(j+D*t),T+=y*p[M+3],x+=y,p[M+3]<255&&(y=y*p[M+3]/250),S+=y*p[M],C+=y*p[M+1],w+=y*p[M+2],b+=y))}h[v]=S/b,h[v+1]=C/b,h[v+2]=w/b,h[v+3]=T/x}return m},toObject:function(){return{type:this.type,scaleX:this.scaleX,scaleY:this.scaleY,resizeType:this.resizeType,lanczosLobes:this.lanczosLobes}}}),t.Image.filters.Resize.fromObject=t.Image.filters.BaseFilter.fromObject})(e),(function(e){var t=e.fabric||={},n=t.Image.filters,r=t.util.createClass;n.Contrast=r(n.BaseFilter,{type:`Contrast`,fragmentSource:`precision highp float;
-uniform sampler2D uTexture;
-uniform float uContrast;
-varying vec2 vTexCoord;
-void main() {
-vec4 color = texture2D(uTexture, vTexCoord);
-float contrastF = 1.015 * (uContrast + 1.0) / (1.0 * (1.015 - uContrast));
-color.rgb = contrastF * (color.rgb - 0.5) + 0.5;
-gl_FragColor = color;
-}`,contrast:0,mainParameter:`contrast`,applyTo2d:function(e){if(this.contrast!==0){var t=e.imageData,n,r,i=t.data,r=i.length,a=Math.floor(this.contrast*255),o=259*(a+255)/(255*(259-a));for(n=0;n<r;n+=4)i[n]=o*(i[n]-128)+128,i[n+1]=o*(i[n+1]-128)+128,i[n+2]=o*(i[n+2]-128)+128}},getUniformLocations:function(e,t){return{uContrast:e.getUniformLocation(t,`uContrast`)}},sendUniformData:function(e,t){e.uniform1f(t.uContrast,this.contrast)}}),t.Image.filters.Contrast.fromObject=t.Image.filters.BaseFilter.fromObject})(e),(function(e){var t=e.fabric||={},n=t.Image.filters,r=t.util.createClass;n.Saturation=r(n.BaseFilter,{type:`Saturation`,fragmentSource:`precision highp float;
-uniform sampler2D uTexture;
-uniform float uSaturation;
-varying vec2 vTexCoord;
-void main() {
-vec4 color = texture2D(uTexture, vTexCoord);
-float rgMax = max(color.r, color.g);
-float rgbMax = max(rgMax, color.b);
-color.r += rgbMax != color.r ? (rgbMax - color.r) * uSaturation : 0.00;
-color.g += rgbMax != color.g ? (rgbMax - color.g) * uSaturation : 0.00;
-color.b += rgbMax != color.b ? (rgbMax - color.b) * uSaturation : 0.00;
-gl_FragColor = color;
-}`,saturation:0,mainParameter:`saturation`,applyTo2d:function(e){if(this.saturation!==0){var t=e.imageData.data,n=t.length,r=-this.saturation,i,a;for(i=0;i<n;i+=4)a=Math.max(t[i],t[i+1],t[i+2]),t[i]+=a===t[i]?0:(a-t[i])*r,t[i+1]+=a===t[i+1]?0:(a-t[i+1])*r,t[i+2]+=a===t[i+2]?0:(a-t[i+2])*r}},getUniformLocations:function(e,t){return{uSaturation:e.getUniformLocation(t,`uSaturation`)}},sendUniformData:function(e,t){e.uniform1f(t.uSaturation,-this.saturation)}}),t.Image.filters.Saturation.fromObject=t.Image.filters.BaseFilter.fromObject})(e),(function(e){var t=e.fabric||={},n=t.Image.filters,r=t.util.createClass;n.Vibrance=r(n.BaseFilter,{type:`Vibrance`,fragmentSource:`precision highp float;
-uniform sampler2D uTexture;
-uniform float uVibrance;
-varying vec2 vTexCoord;
-void main() {
-vec4 color = texture2D(uTexture, vTexCoord);
-float max = max(color.r, max(color.g, color.b));
-float avg = (color.r + color.g + color.b) / 3.0;
-float amt = (abs(max - avg) * 2.0) * uVibrance;
-color.r += max != color.r ? (max - color.r) * amt : 0.00;
-color.g += max != color.g ? (max - color.g) * amt : 0.00;
-color.b += max != color.b ? (max - color.b) * amt : 0.00;
-gl_FragColor = color;
-}`,vibrance:0,mainParameter:`vibrance`,applyTo2d:function(e){if(this.vibrance!==0){var t=e.imageData.data,n=t.length,r=-this.vibrance,i,a,o,s;for(i=0;i<n;i+=4)a=Math.max(t[i],t[i+1],t[i+2]),o=(t[i]+t[i+1]+t[i+2])/3,s=Math.abs(a-o)*2/255*r,t[i]+=a===t[i]?0:(a-t[i])*s,t[i+1]+=a===t[i+1]?0:(a-t[i+1])*s,t[i+2]+=a===t[i+2]?0:(a-t[i+2])*s}},getUniformLocations:function(e,t){return{uVibrance:e.getUniformLocation(t,`uVibrance`)}},sendUniformData:function(e,t){e.uniform1f(t.uVibrance,-this.vibrance)}}),t.Image.filters.Vibrance.fromObject=t.Image.filters.BaseFilter.fromObject})(e),(function(e){var t=e.fabric||={},n=t.Image.filters,r=t.util.createClass;n.Blur=r(n.BaseFilter,{type:`Blur`,fragmentSource:`precision highp float;
-uniform sampler2D uTexture;
-uniform vec2 uDelta;
-varying vec2 vTexCoord;
-const float nSamples = 15.0;
-vec3 v3offset = vec3(12.9898, 78.233, 151.7182);
-float random(vec3 scale) {
-return fract(sin(dot(gl_FragCoord.xyz, scale)) * 43758.5453);
-}
-void main() {
-vec4 color = vec4(0.0);
-float total = 0.0;
-float offset = random(v3offset);
-for (float t = -nSamples; t <= nSamples; t++) {
-float percent = (t + offset - 0.5) / nSamples;
-float weight = 1.0 - abs(percent);
-color += texture2D(uTexture, vTexCoord + uDelta * percent) * weight;
-total += weight;
-}
-gl_FragColor = color / total;
-}`,blur:0,mainParameter:`blur`,applyTo:function(e){e.webgl?(this.aspectRatio=e.sourceWidth/e.sourceHeight,e.passes++,this._setupFrameBuffer(e),this.horizontal=!0,this.applyToWebGL(e),this._swapTextures(e),this._setupFrameBuffer(e),this.horizontal=!1,this.applyToWebGL(e),this._swapTextures(e)):this.applyTo2d(e)},applyTo2d:function(e){e.imageData=this.simpleBlur(e)},simpleBlur:function(e){var n=e.filterBackend.resources,r,i,a=e.imageData.width,o=e.imageData.height;n.blurLayer1||(n.blurLayer1=t.util.createCanvasElement(),n.blurLayer2=t.util.createCanvasElement()),r=n.blurLayer1,i=n.blurLayer2,(r.width!==a||r.height!==o)&&(i.width=r.width=a,i.height=r.height=o);var s=r.getContext(`2d`),c=i.getContext(`2d`),l=15,u,d,f,p,m=this.blur*.06*.5;for(s.putImageData(e.imageData,0,0),c.clearRect(0,0,a,o),p=-l;p<=l;p++)u=(Math.random()-.5)/4,d=p/l,f=m*d*a+u,c.globalAlpha=1-Math.abs(d),c.drawImage(r,f,u),s.drawImage(i,0,0),c.globalAlpha=1,c.clearRect(0,0,i.width,i.height);for(p=-l;p<=l;p++)u=(Math.random()-.5)/4,d=p/l,f=m*d*o+u,c.globalAlpha=1-Math.abs(d),c.drawImage(r,u,f),s.drawImage(i,0,0),c.globalAlpha=1,c.clearRect(0,0,i.width,i.height);e.ctx.drawImage(r,0,0);var h=e.ctx.getImageData(0,0,r.width,r.height);return s.globalAlpha=1,s.clearRect(0,0,r.width,r.height),h},getUniformLocations:function(e,t){return{delta:e.getUniformLocation(t,`uDelta`)}},sendUniformData:function(e,t){var n=this.chooseRightDelta();e.uniform2fv(t.delta,n)},chooseRightDelta:function(){var e=1,t=[0,0],n;return this.horizontal?this.aspectRatio>1&&(e=1/this.aspectRatio):this.aspectRatio<1&&(e=this.aspectRatio),n=e*this.blur*.12,this.horizontal?t[0]=n:t[1]=n,t}}),n.Blur.fromObject=t.Image.filters.BaseFilter.fromObject})(e),(function(e){var t=e.fabric||={},n=t.Image.filters,r=t.util.createClass;n.Gamma=r(n.BaseFilter,{type:`Gamma`,fragmentSource:`precision highp float;
-uniform sampler2D uTexture;
-uniform vec3 uGamma;
-varying vec2 vTexCoord;
-void main() {
-vec4 color = texture2D(uTexture, vTexCoord);
-vec3 correction = (1.0 / uGamma);
-color.r = pow(color.r, correction.r);
-color.g = pow(color.g, correction.g);
-color.b = pow(color.b, correction.b);
-gl_FragColor = color;
-gl_FragColor.rgb *= color.a;
-}`,gamma:[1,1,1],mainParameter:`gamma`,initialize:function(e){this.gamma=[1,1,1],n.BaseFilter.prototype.initialize.call(this,e)},applyTo2d:function(e){var t=e.imageData.data,n=this.gamma,r=t.length,i=1/n[0],a=1/n[1],o=1/n[2],s;for(this.rVals||(this.rVals=new Uint8Array(256),this.gVals=new Uint8Array(256),this.bVals=new Uint8Array(256)),s=0,r=256;s<r;s++)this.rVals[s]=(s/255)**i*255,this.gVals[s]=(s/255)**a*255,this.bVals[s]=(s/255)**o*255;for(s=0,r=t.length;s<r;s+=4)t[s]=this.rVals[t[s]],t[s+1]=this.gVals[t[s+1]],t[s+2]=this.bVals[t[s+2]]},getUniformLocations:function(e,t){return{uGamma:e.getUniformLocation(t,`uGamma`)}},sendUniformData:function(e,t){e.uniform3fv(t.uGamma,this.gamma)}}),t.Image.filters.Gamma.fromObject=t.Image.filters.BaseFilter.fromObject})(e),(function(e){var t=e.fabric||={},n=t.Image.filters,r=t.util.createClass;n.Composed=r(n.BaseFilter,{type:`Composed`,subFilters:[],initialize:function(e){this.callSuper(`initialize`,e),this.subFilters=this.subFilters.slice(0)},applyTo:function(e){e.passes+=this.subFilters.length-1,this.subFilters.forEach(function(t){t.applyTo(e)})},toObject:function(){return t.util.object.extend(this.callSuper(`toObject`),{subFilters:this.subFilters.map(function(e){return e.toObject()})})},isNeutralState:function(){return!this.subFilters.some(function(e){return!e.isNeutralState()})}}),t.Image.filters.Composed.fromObject=function(e,n){var r=(e.subFilters||[]).map(function(e){return new t.Image.filters[e.type](e)}),i=new t.Image.filters.Composed({subFilters:r});return n&&n(i),i}})(e),(function(e){var t=e.fabric||={},n=t.Image.filters,r=t.util.createClass;n.HueRotation=r(n.ColorMatrix,{type:`HueRotation`,rotation:0,mainParameter:`rotation`,calculateMatrix:function(){var e=this.rotation*Math.PI,n=t.util.cos(e),r=t.util.sin(e),i=1/3,a=Math.sqrt(i)*r,o=1-n;this.matrix=[1,0,0,0,0,0,1,0,0,0,0,0,1,0,0,0,0,0,1,0],this.matrix[0]=n+o/3,this.matrix[1]=i*o-a,this.matrix[2]=i*o+a,this.matrix[5]=i*o+a,this.matrix[6]=n+i*o,this.matrix[7]=i*o-a,this.matrix[10]=i*o-a,this.matrix[11]=i*o+a,this.matrix[12]=n+i*o},isNeutralState:function(e){return this.calculateMatrix(),n.BaseFilter.prototype.isNeutralState.call(this,e)},applyTo:function(e){this.calculateMatrix(),n.BaseFilter.prototype.applyTo.call(this,e)}}),t.Image.filters.HueRotation.fromObject=t.Image.filters.BaseFilter.fromObject})(e),(function(e){var t=e.fabric||={},n=t.util.object.clone;if(t.Text){t.warn(`fabric.Text is already defined`);return}var r=`fontFamily fontWeight fontSize text underline overline linethrough textAlign fontStyle lineHeight textBackgroundColor charSpacing styles direction path pathStartOffset pathSide pathAlign`.split(` `);t.Text=t.util.createClass(t.Object,{_dimensionAffectingProps:[`fontSize`,`fontWeight`,`fontFamily`,`fontStyle`,`lineHeight`,`text`,`charSpacing`,`textAlign`,`styles`,`path`,`pathStartOffset`,`pathSide`,`pathAlign`],_reNewline:/\r?\n/,_reSpacesAndTabs:/[ \t\r]/g,_reSpaceAndTab:/[ \t\r]/,_reWords:/\S+/g,type:`text`,fontSize:40,fontWeight:`normal`,fontFamily:`Times New Roman`,underline:!1,overline:!1,linethrough:!1,textAlign:`left`,fontStyle:`normal`,lineHeight:1.16,superscript:{size:.6,baseline:-.35},subscript:{size:.6,baseline:.11},textBackgroundColor:``,stateProperties:t.Object.prototype.stateProperties.concat(r),cacheProperties:t.Object.prototype.cacheProperties.concat(r),stroke:null,shadow:null,path:null,pathStartOffset:0,pathSide:`left`,pathAlign:`baseline`,_fontSizeFraction:.222,offsets:{underline:.1,linethrough:-.315,overline:-.88},_fontSizeMult:1.13,charSpacing:0,styles:null,_measuringContext:null,deltaY:0,direction:`ltr`,_styleProperties:[`stroke`,`strokeWidth`,`fill`,`fontFamily`,`fontSize`,`fontWeight`,`fontStyle`,`underline`,`overline`,`linethrough`,`deltaY`,`textBackgroundColor`],__charBounds:[],CACHE_FONT_SIZE:400,MIN_TEXT_WIDTH:2,initialize:function(e,t){this.styles=t&&t.styles||{},this.text=e,this.__skipDimension=!0,this.callSuper(`initialize`,t),this.path&&this.setPathInfo(),this.__skipDimension=!1,this.initDimensions(),this.setCoords(),this.setupState({propertySet:`_dimensionAffectingProps`})},setPathInfo:function(){var e=this.path;e&&(e.segmentsInfo=t.util.getPathSegmentsInfo(e.path))},getMeasuringContext:function(){return t._measuringContext||=this.canvas&&this.canvas.contextCache||t.util.createCanvasElement().getContext(`2d`),t._measuringContext},_splitText:function(){var e=this._splitTextIntoLines(this.text);return this.textLines=e.lines,this._textLines=e.graphemeLines,this._unwrappedTextLines=e._unwrappedLines,this._text=e.graphemeText,e},initDimensions:function(){if(!this.__skipDimension){if(this._splitText(),this._clearCache(),this.path){var e=this.getHeightOfLine(0)*1.1;this.width=this.path.width+e,this.height=this.path.height+e}else this.width=this.calcTextWidth()||this.cursorWidth||this.MIN_TEXT_WIDTH,this.height=this.calcTextHeight();this.textAlign.indexOf(`justify`)!==-1&&this.enlargeSpaces(),this.saveState({propertySet:`_dimensionAffectingProps`})}},enlargeSpaces:function(){for(var e,t,n,r,i,a,o,s=0,c=this._textLines.length;s<c;s++)if(!(this.textAlign!==`justify`&&(s===c-1||this.isEndOfWrapping(s)))&&(r=0,i=this._textLines[s],t=this.getLineWidth(s),t<this.width&&(o=this.textLines[s].match(this._reSpacesAndTabs)))){n=o.length,e=(this.width-t)/n;for(var l=0,u=i.length;l<=u;l++)a=this.__charBounds[s][l],this._reSpaceAndTab.test(i[l])?(a.width+=e,a.kernedWidth+=e,a.left+=r,r+=e):a.left+=r}},isEndOfWrapping:function(e){return e===this._textLines.length-1},missingNewlineOffset:function(){return 1},toString:function(){return`#<fabric.Text (`+this.complexity()+`): { "text": "`+this.text+`", "fontFamily": "`+this.fontFamily+`" }>`},_getCacheCanvasDimensions:function(){var e=this.callSuper(`_getCacheCanvasDimensions`),t=this.fontSize;return e.width+=t*e.zoomX,e.height+=t*e.zoomY,e},_render:function(e){var t=this.path;t&&!t.isNotVisible()&&t._render(e),this._setTextStyles(e),this._renderTextLinesBackground(e),this._renderTextDecoration(e,`underline`),this._renderText(e),this._renderTextDecoration(e,`overline`),this._renderTextDecoration(e,`linethrough`)},_renderText:function(e){this.paintFirst===`stroke`?(this._renderTextStroke(e),this._renderTextFill(e)):(this._renderTextFill(e),this._renderTextStroke(e))},_setTextStyles:function(e,t,n){if(e.textBaseline=`alphabetic`,this.path)switch(this.pathAlign){case`center`:e.textBaseline=`middle`;break;case`ascender`:e.textBaseline=`top`;break;case`descender`:e.textBaseline=`bottom`;break}e.font=this._getFontDeclaration(t,n)},calcTextWidth:function(){for(var e=this.getLineWidth(0),t=1,n=this._textLines.length;t<n;t++){var r=this.getLineWidth(t);r>e&&(e=r)}return e},_renderTextLine:function(e,t,n,r,i,a){this._renderChars(e,t,n,r,i,a)},_renderTextLinesBackground:function(e){if(!(!this.textBackgroundColor&&!this.styleHas(`textBackgroundColor`))){for(var t,n,r=e.fillStyle,i,a,o=this._getLeftOffset(),s=this._getTopOffset(),c=0,l=0,u,d,f=this.path,p,m=0,h=this._textLines.length;m<h;m++){if(t=this.getHeightOfLine(m),!this.textBackgroundColor&&!this.styleHas(`textBackgroundColor`,m)){s+=t;continue}i=this._textLines[m],n=this._getLineLeftOffset(m),l=0,c=0,a=this.getValueOfPropertyAt(m,0,`textBackgroundColor`);for(var g=0,_=i.length;g<_;g++)u=this.__charBounds[m][g],d=this.getValueOfPropertyAt(m,g,`textBackgroundColor`),f?(e.save(),e.translate(u.renderLeft,u.renderTop),e.rotate(u.angle),e.fillStyle=d,d&&e.fillRect(-u.width/2,-t/this.lineHeight*(1-this._fontSizeFraction),u.width,t/this.lineHeight),e.restore()):d===a?l+=u.kernedWidth:(p=o+n+c,this.direction===`rtl`&&(p=this.width-p-l),e.fillStyle=a,a&&e.fillRect(p,s,l,t/this.lineHeight),c=u.left,l=u.width,a=d);d&&!f&&(p=o+n+c,this.direction===`rtl`&&(p=this.width-p-l),e.fillStyle=d,e.fillRect(p,s,l,t/this.lineHeight)),s+=t}e.fillStyle=r,this._removeShadow(e)}},getFontCache:function(e){var n=e.fontFamily.toLowerCase();t.charWidthsCache[n]||(t.charWidthsCache[n]={});var r=t.charWidthsCache[n],i=e.fontStyle.toLowerCase()+`_`+(e.fontWeight+``).toLowerCase();return r[i]||(r[i]={}),r[i]},_measureChar:function(e,t,n,r){var i=this.getFontCache(t),a=this._getFontDeclaration(t),o=this._getFontDeclaration(r),s=n+e,c=a===o,l,u,d,f=t.fontSize/this.CACHE_FONT_SIZE,p;if(n&&i[n]!==void 0&&(d=i[n]),i[e]!==void 0&&(p=l=i[e]),c&&i[s]!==void 0&&(u=i[s],p=u-d),l===void 0||d===void 0||u===void 0){var m=this.getMeasuringContext();this._setTextStyles(m,t,!0)}return l===void 0&&(p=l=m.measureText(e).width,i[e]=l),d===void 0&&c&&n&&(d=m.measureText(n).width,i[n]=d),c&&u===void 0&&(u=m.measureText(s).width,i[s]=u,p=u-d),{width:l*f,kernedWidth:p*f}},getHeightOfChar:function(e,t){return this.getValueOfPropertyAt(e,t,`fontSize`)},measureLine:function(e){var t=this._measureLine(e);return this.charSpacing!==0&&(t.width-=this._getWidthOfCharSpacing()),t.width<0&&(t.width=0),t},_measureLine:function(e){var n=0,r,i,a=this._textLines[e],o,s,c=0,l=Array(a.length),u=0,d,f,p=this.path,m=this.pathSide===`right`;for(this.__charBounds[e]=l,r=0;r<a.length;r++)i=a[r],s=this._getGraphemeBox(i,e,r,o),l[r]=s,n+=s.kernedWidth,o=i;if(l[r]={left:s?s.left+s.width:0,width:0,kernedWidth:0,height:this.fontSize},p){switch(f=p.segmentsInfo[p.segmentsInfo.length-1].length,d=t.util.getPointOnPath(p.path,0,p.segmentsInfo),d.x+=p.pathOffset.x,d.y+=p.pathOffset.y,this.textAlign){case`left`:u=m?f-n:0;break;case`center`:u=(f-n)/2;break;case`right`:u=m?0:f-n;break}for(u+=this.pathStartOffset*(m?-1:1),r=m?a.length-1:0;m?r>=0:r<a.length;m?r--:r++)s=l[r],u>f?u%=f:u<0&&(u+=f),this._setGraphemeOnPath(u,s,d),u+=s.kernedWidth}return{width:n,numOfSpaces:c}},_setGraphemeOnPath:function(e,n,r){var i=e+n.kernedWidth/2,a=this.path,o=t.util.getPointOnPath(a.path,i,a.segmentsInfo);n.renderLeft=o.x-r.x,n.renderTop=o.y-r.y,n.angle=o.angle+(this.pathSide===`right`?Math.PI:0)},_getGraphemeBox:function(e,t,n,r,i){var a=this.getCompleteStyleDeclaration(t,n),o=r?this.getCompleteStyleDeclaration(t,n-1):{},s=this._measureChar(e,a,r,o),c=s.kernedWidth,l=s.width,u;this.charSpacing!==0&&(u=this._getWidthOfCharSpacing(),l+=u,c+=u);var d={width:l,left:0,height:a.fontSize,kernedWidth:c,deltaY:a.deltaY};if(n>0&&!i){var f=this.__charBounds[t][n-1];d.left=f.left+f.width+s.kernedWidth-s.width}return d},getHeightOfLine:function(e){if(this.__lineHeights[e])return this.__lineHeights[e];for(var t=this._textLines[e],n=this.getHeightOfChar(e,0),r=1,i=t.length;r<i;r++)n=Math.max(this.getHeightOfChar(e,r),n);return this.__lineHeights[e]=n*this.lineHeight*this._fontSizeMult},calcTextHeight:function(){for(var e,t=0,n=0,r=this._textLines.length;n<r;n++)e=this.getHeightOfLine(n),t+=n===r-1?e/this.lineHeight:e;return t},_getLeftOffset:function(){return this.direction===`ltr`?-this.width/2:this.width/2},_getTopOffset:function(){return-this.height/2},_renderTextCommon:function(e,t){e.save();for(var n=0,r=this._getLeftOffset(),i=this._getTopOffset(),a=0,o=this._textLines.length;a<o;a++){var s=this.getHeightOfLine(a),c=s/this.lineHeight,l=this._getLineLeftOffset(a);this._renderTextLine(t,e,this._textLines[a],r+l,i+n+c,a),n+=s}e.restore()},_renderTextFill:function(e){!this.fill&&!this.styleHas(`fill`)||this._renderTextCommon(e,`fillText`)},_renderTextStroke:function(e){(!this.stroke||this.strokeWidth===0)&&this.isEmptyStyles()||(this.shadow&&!this.shadow.affectStroke&&this._removeShadow(e),e.save(),this._setLineDash(e,this.strokeDashArray),e.beginPath(),this._renderTextCommon(e,`strokeText`),e.closePath(),e.restore())},_renderChars:function(e,n,r,i,a,o){var s=this.getHeightOfLine(o),c=this.textAlign.indexOf(`justify`)!==-1,l,u,d=``,f,p=0,m,h=this.path,g=!c&&this.charSpacing===0&&this.isEmptyStyles(o)&&!h,_=this.direction===`ltr`,v=this.direction===`ltr`?1:-1,y,b=n.canvas.getAttribute(`dir`);if(n.save(),b!==this.direction&&(n.canvas.setAttribute(`dir`,_?`ltr`:`rtl`),n.direction=_?`ltr`:`rtl`,n.textAlign=_?`left`:`right`),a-=s*this._fontSizeFraction/this.lineHeight,g){this._renderChar(e,n,o,0,r.join(``),i,a,s),n.restore();return}for(var x=0,S=r.length-1;x<=S;x++)m=x===S||this.charSpacing||h,d+=r[x],f=this.__charBounds[o][x],p===0?(i+=v*(f.kernedWidth-f.width),p+=f.width):p+=f.kernedWidth,c&&!m&&this._reSpaceAndTab.test(r[x])&&(m=!0),m||=(l||=this.getCompleteStyleDeclaration(o,x),u=this.getCompleteStyleDeclaration(o,x+1),t.util.hasStyleChanged(l,u,!1)),m&&(h?(n.save(),n.translate(f.renderLeft,f.renderTop),n.rotate(f.angle),this._renderChar(e,n,o,x,d,-p/2,0,s),n.restore()):(y=i,this._renderChar(e,n,o,x,d,y,a,s)),d=``,l=u,i+=v*p,p=0);n.restore()},_applyPatternGradientTransformText:function(e){var n=t.util.createCanvasElement(),r,i=this.width+this.strokeWidth,a=this.height+this.strokeWidth;return n.width=i,n.height=a,r=n.getContext(`2d`),r.beginPath(),r.moveTo(0,0),r.lineTo(i,0),r.lineTo(i,a),r.lineTo(0,a),r.closePath(),r.translate(i/2,a/2),r.fillStyle=e.toLive(r),this._applyPatternGradientTransform(r,e),r.fill(),r.createPattern(n,`no-repeat`)},handleFiller:function(e,t,n){var r,i;return n.toLive?n.gradientUnits===`percentage`||n.gradientTransform||n.patternTransform?(r=-this.width/2,i=-this.height/2,e.translate(r,i),e[t]=this._applyPatternGradientTransformText(n),{offsetX:r,offsetY:i}):(e[t]=n.toLive(e,this),this._applyPatternGradientTransform(e,n)):(e[t]=n,{offsetX:0,offsetY:0})},_setStrokeStyles:function(e,t){return e.lineWidth=t.strokeWidth,e.lineCap=this.strokeLineCap,e.lineDashOffset=this.strokeDashOffset,e.lineJoin=this.strokeLineJoin,e.miterLimit=this.strokeMiterLimit,this.handleFiller(e,`strokeStyle`,t.stroke)},_setFillStyles:function(e,t){return this.handleFiller(e,`fillStyle`,t.fill)},_renderChar:function(e,t,n,r,i,a,o){var s=this._getStyleDeclaration(n,r),c=this.getCompleteStyleDeclaration(n,r),l=e===`fillText`&&c.fill,u=e===`strokeText`&&c.stroke&&c.strokeWidth,d,f;!u&&!l||(t.save(),l&&(d=this._setFillStyles(t,c)),u&&(f=this._setStrokeStyles(t,c)),t.font=this._getFontDeclaration(c),s&&s.textBackgroundColor&&this._removeShadow(t),s&&s.deltaY&&(o+=s.deltaY),l&&t.fillText(i,a-d.offsetX,o-d.offsetY),u&&t.strokeText(i,a-f.offsetX,o-f.offsetY),t.restore())},setSuperscript:function(e,t){return this._setScript(e,t,this.superscript)},setSubscript:function(e,t){return this._setScript(e,t,this.subscript)},_setScript:function(e,t,n){var r=this.get2DCursorLocation(e,!0),i=this.getValueOfPropertyAt(r.lineIndex,r.charIndex,`fontSize`),a=this.getValueOfPropertyAt(r.lineIndex,r.charIndex,`deltaY`),o={fontSize:i*n.size,deltaY:a+i*n.baseline};return this.setSelectionStyles(o,e,t),this},_getLineLeftOffset:function(e){var t=this.getLineWidth(e),n=this.width-t,r=this.textAlign,i=this.direction,a,o=0,a=this.isEndOfWrapping(e);return r===`justify`||r===`justify-center`&&!a||r===`justify-right`&&!a||r===`justify-left`&&!a?0:(r===`center`&&(o=n/2),r===`right`&&(o=n),r===`justify-center`&&(o=n/2),r===`justify-right`&&(o=n),i===`rtl`&&(o-=n),o)},_clearCache:function(){this.__lineWidths=[],this.__lineHeights=[],this.__charBounds=[]},_shouldClearDimensionCache:function(){var e=this._forceClearCache;return e||=this.hasStateChanged(`_dimensionAffectingProps`),e&&(this.dirty=!0,this._forceClearCache=!1),e},getLineWidth:function(e){if(this.__lineWidths[e]!==void 0)return this.__lineWidths[e];var t=this.measureLine(e).width;return this.__lineWidths[e]=t,t},_getWidthOfCharSpacing:function(){return this.charSpacing===0?0:this.fontSize*this.charSpacing/1e3},getValueOfPropertyAt:function(e,t,n){var r=this._getStyleDeclaration(e,t);return r&&r[n]!==void 0?r[n]:this[n]},_renderTextDecoration:function(e,t){if(!(!this[t]&&!this.styleHas(t))){e.save(),(t===`overline`||t===`linethrough`)&&this._removeShadow(e);for(var n,r,i,a,o,s,c,l,u=this._getLeftOffset(),d=this._getTopOffset(),f,p,m,h,g,_,v,y,b=this.path,x=this._getWidthOfCharSpacing(),S=this.offsets[t],C=0,w=this._textLines.length;C<w;C++){if(n=this.getHeightOfLine(C),!this[t]&&!this.styleHas(t,C)){d+=n;continue}c=this._textLines[C],_=n/this.lineHeight,a=this._getLineLeftOffset(C),p=0,m=0,l=this.getValueOfPropertyAt(C,0,t),y=this.getValueOfPropertyAt(C,0,`fill`),f=d+_*(1-this._fontSizeFraction),r=this.getHeightOfChar(C,0),o=this.getValueOfPropertyAt(C,0,`deltaY`);for(var T=0,E=c.length;T<E;T++)if(h=this.__charBounds[C][T],g=this.getValueOfPropertyAt(C,T,t),v=this.getValueOfPropertyAt(C,T,`fill`),i=this.getHeightOfChar(C,T),s=this.getValueOfPropertyAt(C,T,`deltaY`),b&&g&&v)e.save(),e.fillStyle=y,e.translate(h.renderLeft,h.renderTop),e.rotate(h.angle),e.fillRect(-h.kernedWidth/2,S*i+s,h.kernedWidth,this.fontSize/15),e.restore();else if((g!==l||v!==y||i!==r||s!==o)&&m>0){var D=u+a+p;this.direction===`rtl`&&(D=this.width-D-m),l&&y&&(e.fillStyle=y,e.fillRect(D,f+S*r+o,m,this.fontSize/15)),p=h.left,m=h.width,l=g,y=v,r=i,o=s}else m+=h.kernedWidth;var D=u+a+p;this.direction===`rtl`&&(D=this.width-D-m),e.fillStyle=v,g&&v&&e.fillRect(D,f+S*r+o,m-x,this.fontSize/15),d+=n}e.restore()}},_getFontDeclaration:function(e,n){var r=e||this,i=this.fontFamily,a=t.Text.genericFonts.indexOf(i.toLowerCase())>-1,o=i===void 0||i.indexOf(`'`)>-1||i.indexOf(`,`)>-1||i.indexOf(`"`)>-1||a?r.fontFamily:`"`+r.fontFamily+`"`;return[t.isLikelyNode?r.fontWeight:r.fontStyle,t.isLikelyNode?r.fontStyle:r.fontWeight,n?this.CACHE_FONT_SIZE+`px`:r.fontSize+`px`,o].join(` `)},render:function(e){this.visible&&(this.canvas&&this.canvas.skipOffscreen&&!this.group&&!this.isOnScreen()||(this._shouldClearDimensionCache()&&this.initDimensions(),this.callSuper(`render`,e)))},_splitTextIntoLines:function(e){for(var n=e.split(this._reNewline),r=Array(n.length),i=[`
-`],a=[],o=0;o<n.length;o++)r[o]=t.util.string.graphemeSplit(n[o]),a=a.concat(r[o],i);return a.pop(),{_unwrappedLines:r,lines:n,graphemeText:a,graphemeLines:r}},toObject:function(e){var n=r.concat(e),i=this.callSuper(`toObject`,n);return i.styles=t.util.stylesToArray(this.styles,this.text),i.path&&=this.path.toObject(),i},set:function(e,t){this.callSuper(`set`,e,t);var n=!1,r=!1;if(typeof e==`object`)for(var i in e)i===`path`&&this.setPathInfo(),n||=this._dimensionAffectingProps.indexOf(i)!==-1,r||=i===`path`;else n=this._dimensionAffectingProps.indexOf(e)!==-1,r=e===`path`;return r&&this.setPathInfo(),n&&(this.initDimensions(),this.setCoords()),this},complexity:function(){return 1}}),t.Text.ATTRIBUTE_NAMES=t.SHARED_ATTRIBUTES.concat(`x y dx dy font-family font-style font-weight font-size letter-spacing text-decoration text-anchor`.split(` `)),t.Text.DEFAULT_SVG_FONT_SIZE=16,t.Text.fromElement=function(e,r,i){if(!e)return r(null);var a=t.parseAttributes(e,t.Text.ATTRIBUTE_NAMES),o=a.textAnchor||`left`;if(i=t.util.object.extend(i?n(i):{},a),i.top=i.top||0,i.left=i.left||0,a.textDecoration){var s=a.textDecoration;s.indexOf(`underline`)!==-1&&(i.underline=!0),s.indexOf(`overline`)!==-1&&(i.overline=!0),s.indexOf(`line-through`)!==-1&&(i.linethrough=!0),delete i.textDecoration}`dx`in a&&(i.left+=a.dx),`dy`in a&&(i.top+=a.dy),`fontSize`in i||(i.fontSize=t.Text.DEFAULT_SVG_FONT_SIZE);var c=``;`textContent`in e?c=e.textContent:`firstChild`in e&&e.firstChild!==null&&`data`in e.firstChild&&e.firstChild.data!==null&&(c=e.firstChild.data),c=c.replace(/^\s+|\s+$|\n+/g,``).replace(/\s+/g,` `);var l=i.strokeWidth;i.strokeWidth=0;var u=new t.Text(c,i),d=u.getScaledHeight()/u.height,f=((u.height+u.strokeWidth)*u.lineHeight-u.height)*d,p=u.getScaledHeight()+f,m=0;o===`center`&&(m=u.getScaledWidth()/2),o===`right`&&(m=u.getScaledWidth()),u.set({left:u.left-m,top:u.top-(p-u.fontSize*(.07+u._fontSizeFraction))/u.lineHeight,strokeWidth:l===void 0?1:l}),r(u)},t.Text.fromObject=function(e,r){var i=n(e),a=e.path;return delete i.path,t.Object._fromObject(`Text`,i,function(n){n.styles=t.util.stylesFromArray(e.styles,e.text),a?t.Object._fromObject(`Path`,a,function(e){n.set(`path`,e),r(n)},`path`):r(n)},`text`)},t.Text.genericFonts=[`sans-serif`,`serif`,`cursive`,`fantasy`,`monospace`],t.util.createAccessors&&t.util.createAccessors(t.Text)})(e),(function(){t.util.object.extend(t.Text.prototype,{isEmptyStyles:function(e){if(!this.styles||e!==void 0&&!this.styles[e])return!0;var t=e===void 0?this.styles:{line:this.styles[e]};for(var n in t)for(var r in t[n])for(var i in t[n][r])return!1;return!0},styleHas:function(e,t){if(!this.styles||!e||e===``||t!==void 0&&!this.styles[t])return!1;var n=t===void 0?this.styles:{0:this.styles[t]};for(var r in n)for(var i in n[r])if(n[r][i][e]!==void 0)return!0;return!1},cleanStyle:function(e){if(!this.styles||!e||e===``)return!1;var t=this.styles,n=0,r,i,a=!0,o=0,s;for(var c in t){for(var l in r=0,t[c]){var s=t[c][l],u=s.hasOwnProperty(e);n++,u?(i?s[e]!==i&&(a=!1):i=s[e],s[e]===this[e]&&delete s[e]):a=!1,Object.keys(s).length===0?delete t[c][l]:r++}r===0&&delete t[c]}for(var d=0;d<this._textLines.length;d++)o+=this._textLines[d].length;a&&n===o&&(this[e]=i,this.removeStyle(e))},removeStyle:function(e){if(!(!this.styles||!e||e===``)){var t=this.styles,n,r,i;for(r in t){for(i in n=t[r],n)delete n[i][e],Object.keys(n[i]).length===0&&delete n[i];Object.keys(n).length===0&&delete t[r]}}},_extendStyles:function(e,n){var r=this.get2DCursorLocation(e);this._getLineStyle(r.lineIndex)||this._setLineStyle(r.lineIndex),this._getStyleDeclaration(r.lineIndex,r.charIndex)||this._setStyleDeclaration(r.lineIndex,r.charIndex,{}),t.util.object.extend(this._getStyleDeclaration(r.lineIndex,r.charIndex),n)},get2DCursorLocation:function(e,t){e===void 0&&(e=this.selectionStart);for(var n=t?this._unwrappedTextLines:this._textLines,r=n.length,i=0;i<r;i++){if(e<=n[i].length)return{lineIndex:i,charIndex:e};e-=n[i].length+this.missingNewlineOffset(i,t)}return{lineIndex:i-1,charIndex:n[i-1].length<e?n[i-1].length:e}},getSelectionStyles:function(e,t,n){e===void 0&&(e=this.selectionStart||0),t===void 0&&(t=this.selectionEnd||e);for(var r=[],i=e;i<t;i++)r.push(this.getStyleAtPosition(i,n));return r},getStyleAtPosition:function(e,t){var n=this.get2DCursorLocation(e);return(t?this.getCompleteStyleDeclaration(n.lineIndex,n.charIndex):this._getStyleDeclaration(n.lineIndex,n.charIndex))||{}},setSelectionStyles:function(e,t,n){t===void 0&&(t=this.selectionStart||0),n===void 0&&(n=this.selectionEnd||t);for(var r=t;r<n;r++)this._extendStyles(r,e);return this._forceClearCache=!0,this},_getStyleDeclaration:function(e,t){var n=this.styles&&this.styles[e];return n?n[t]:null},getCompleteStyleDeclaration:function(e,t){for(var n=this._getStyleDeclaration(e,t)||{},r={},i,a=0;a<this._styleProperties.length;a++)i=this._styleProperties[a],r[i]=n[i]===void 0?this[i]:n[i];return r},_setStyleDeclaration:function(e,t,n){this.styles[e][t]=n},_deleteStyleDeclaration:function(e,t){delete this.styles[e][t]},_getLineStyle:function(e){return!!this.styles[e]},_setLineStyle:function(e){this.styles[e]={}},_deleteLineStyle:function(e){delete this.styles[e]}})})(),(function(){function e(e){e.textDecoration&&(e.textDecoration.indexOf(`underline`)>-1&&(e.underline=!0),e.textDecoration.indexOf(`line-through`)>-1&&(e.linethrough=!0),e.textDecoration.indexOf(`overline`)>-1&&(e.overline=!0),delete e.textDecoration)}t.IText=t.util.createClass(t.Text,t.Observable,{type:`i-text`,selectionStart:0,selectionEnd:0,selectionColor:`rgba(17,119,255,0.3)`,isEditing:!1,editable:!0,editingBorderColor:`rgba(102,153,255,0.25)`,cursorWidth:2,cursorColor:``,cursorDelay:1e3,cursorDuration:600,caching:!0,hiddenTextareaContainer:null,_reSpace:/\s|\n/,_currentCursorOpacity:0,_selectionDirection:null,_abortCursorAnimation:!1,__widthOfSpace:[],inCompositionMode:!1,initialize:function(e,t){this.callSuper(`initialize`,e,t),this.initBehavior()},setSelectionStart:function(e){e=Math.max(e,0),this._updateAndFire(`selectionStart`,e)},setSelectionEnd:function(e){e=Math.min(e,this.text.length),this._updateAndFire(`selectionEnd`,e)},_updateAndFire:function(e,t){this[e]!==t&&(this._fireSelectionChanged(),this[e]=t),this._updateTextarea()},_fireSelectionChanged:function(){this.fire(`selection:changed`),this.canvas&&this.canvas.fire(`text:selection:changed`,{target:this})},initDimensions:function(){this.isEditing&&this.initDelayedCursor(),this.clearContextTop(),this.callSuper(`initDimensions`)},render:function(e){this.clearContextTop(),this.callSuper(`render`,e),this.cursorOffsetCache={},this.renderCursorOrSelection()},_render:function(e){this.callSuper(`_render`,e)},clearContextTop:function(e){if(!(!this.isEditing||!this.canvas||!this.canvas.contextTop)){var t=this.canvas.contextTop,n=this.canvas.viewportTransform;t.save(),t.transform(n[0],n[1],n[2],n[3],n[4],n[5]),this.transform(t),this._clearTextArea(t),e||t.restore()}},renderCursorOrSelection:function(){if(!(!this.isEditing||!this.canvas||!this.canvas.contextTop)){var e=this._getCursorBoundaries(),t=this.canvas.contextTop;this.clearContextTop(!0),this.selectionStart===this.selectionEnd?this.renderCursor(e,t):this.renderSelection(e,t),t.restore()}},_clearTextArea:function(e){var t=this.width+4,n=this.height+4;e.clearRect(-t/2,-n/2,t,n)},_getCursorBoundaries:function(e){e===void 0&&(e=this.selectionStart);var t=this._getLeftOffset(),n=this._getTopOffset(),r=this._getCursorBoundariesOffsets(e);return{left:t,top:n,leftOffset:r.left,topOffset:r.top}},_getCursorBoundariesOffsets:function(e){if(this.cursorOffsetCache&&`top`in this.cursorOffsetCache)return this.cursorOffsetCache;var t,n,r,i=0,a=0,o,s=this.get2DCursorLocation(e);r=s.charIndex,n=s.lineIndex;for(var c=0;c<n;c++)i+=this.getHeightOfLine(c);t=this._getLineLeftOffset(n);var l=this.__charBounds[n][r];return l&&(a=l.left),this.charSpacing!==0&&r===this._textLines[n].length&&(a-=this._getWidthOfCharSpacing()),o={top:i,left:t+(a>0?a:0)},this.direction===`rtl`&&(o.left*=-1),this.cursorOffsetCache=o,this.cursorOffsetCache},renderCursor:function(e,t){var n=this.get2DCursorLocation(),r=n.lineIndex,i=n.charIndex>0?n.charIndex-1:0,a=this.getValueOfPropertyAt(r,i,`fontSize`),o=this.scaleX*this.canvas.getZoom(),s=this.cursorWidth/o,c=e.topOffset,l=this.getValueOfPropertyAt(r,i,`deltaY`);c+=(1-this._fontSizeFraction)*this.getHeightOfLine(r)/this.lineHeight-a*(1-this._fontSizeFraction),this.inCompositionMode&&this.renderSelection(e,t),t.fillStyle=this.cursorColor||this.getValueOfPropertyAt(r,i,`fill`),t.globalAlpha=this.__isMousedown?1:this._currentCursorOpacity,t.fillRect(e.left+e.leftOffset-s/2,c+e.top+l,s,a)},renderSelection:function(e,t){for(var n=this.inCompositionMode?this.hiddenTextarea.selectionStart:this.selectionStart,r=this.inCompositionMode?this.hiddenTextarea.selectionEnd:this.selectionEnd,i=this.textAlign.indexOf(`justify`)!==-1,a=this.get2DCursorLocation(n),o=this.get2DCursorLocation(r),s=a.lineIndex,c=o.lineIndex,l=a.charIndex<0?0:a.charIndex,u=o.charIndex<0?0:o.charIndex,d=s;d<=c;d++){var f=this._getLineLeftOffset(d)||0,p=this.getHeightOfLine(d),m=0,h=0,g=0;if(d===s&&(h=this.__charBounds[s][l].left),d>=s&&d<c)g=i&&!this.isEndOfWrapping(d)?this.width:this.getLineWidth(d)||5;else if(d===c)if(u===0)g=this.__charBounds[c][u].left;else{var _=this._getWidthOfCharSpacing();g=this.__charBounds[c][u-1].left+this.__charBounds[c][u-1].width-_}m=p,(this.lineHeight<1||d===c&&this.lineHeight>1)&&(p/=this.lineHeight);var v=e.left+f+h,y=g-h,b=p,x=0;this.inCompositionMode?(t.fillStyle=this.compositionColor||`black`,b=1,x=p):t.fillStyle=this.selectionColor,this.direction===`rtl`&&(v=this.width-v-y),t.fillRect(v,e.top+e.topOffset+x,y,b),e.topOffset+=m}},getCurrentCharFontSize:function(){var e=this._getCurrentCharIndex();return this.getValueOfPropertyAt(e.l,e.c,`fontSize`)},getCurrentCharColor:function(){var e=this._getCurrentCharIndex();return this.getValueOfPropertyAt(e.l,e.c,`fill`)},_getCurrentCharIndex:function(){var e=this.get2DCursorLocation(this.selectionStart,!0),t=e.charIndex>0?e.charIndex-1:0;return{l:e.lineIndex,c:t}}}),t.IText.fromObject=function(n,r){var i=t.util.stylesFromArray(n.styles,n.text),a=Object.assign({},n,{styles:i});if(delete a.path,e(a),a.styles)for(var o in a.styles)for(var s in a.styles[o])e(a.styles[o][s]);t.Object._fromObject(`IText`,a,function(e){n.path?t.Object._fromObject(`Path`,n.path,function(t){e.set(`path`,t),r(e)},`path`):r(e)},`text`)}})(),(function(){var e=t.util.object.clone;t.util.object.extend(t.IText.prototype,{initBehavior:function(){this.initAddedHandler(),this.initRemovedHandler(),this.initCursorSelectionHandlers(),this.initDoubleClickSimulation(),this.mouseMoveHandler=this.mouseMoveHandler.bind(this)},onDeselect:function(){this.isEditing&&this.exitEditing(),this.selected=!1},initAddedHandler:function(){var e=this;this.on(`added`,function(){var t=e.canvas;t&&(t._hasITextHandlers||(t._hasITextHandlers=!0,e._initCanvasHandlers(t)),t._iTextInstances=t._iTextInstances||[],t._iTextInstances.push(e))})},initRemovedHandler:function(){var e=this;this.on(`removed`,function(){var n=e.canvas;n&&(n._iTextInstances=n._iTextInstances||[],t.util.removeFromArray(n._iTextInstances,e),n._iTextInstances.length===0&&(n._hasITextHandlers=!1,e._removeCanvasHandlers(n)))})},_initCanvasHandlers:function(e){e._mouseUpITextHandler=function(){e._iTextInstances&&e._iTextInstances.forEach(function(e){e.__isMousedown=!1})},e.on(`mouse:up`,e._mouseUpITextHandler)},_removeCanvasHandlers:function(e){e.off(`mouse:up`,e._mouseUpITextHandler)},_tick:function(){this._currentTickState=this._animateCursor(this,1,this.cursorDuration,`_onTickComplete`)},_animateCursor:function(e,t,n,r){var i={isAborted:!1,abort:function(){this.isAborted=!0}};return e.animate(`_currentCursorOpacity`,t,{duration:n,onComplete:function(){i.isAborted||e[r]()},onChange:function(){e.canvas&&e.selectionStart===e.selectionEnd&&e.renderCursorOrSelection()},abort:function(){return i.isAborted}}),i},_onTickComplete:function(){var e=this;this._cursorTimeout1&&clearTimeout(this._cursorTimeout1),this._cursorTimeout1=setTimeout(function(){e._currentTickCompleteState=e._animateCursor(e,0,this.cursorDuration/2,`_tick`)},100)},initDelayedCursor:function(e){var t=this,n=e?0:this.cursorDelay;this.abortCursorAnimation(),this._currentCursorOpacity=1,this._cursorTimeout2=setTimeout(function(){t._tick()},n)},abortCursorAnimation:function(){var e=this._currentTickState||this._currentTickCompleteState,t=this.canvas;this._currentTickState&&this._currentTickState.abort(),this._currentTickCompleteState&&this._currentTickCompleteState.abort(),clearTimeout(this._cursorTimeout1),clearTimeout(this._cursorTimeout2),this._currentCursorOpacity=0,e&&t&&t.clearContext(t.contextTop||t.contextContainer)},selectAll:function(){return this.selectionStart=0,this.selectionEnd=this._text.length,this._fireSelectionChanged(),this._updateTextarea(),this},getSelectedText:function(){return this._text.slice(this.selectionStart,this.selectionEnd).join(``)},findWordBoundaryLeft:function(e){var t=0,n=e-1;if(this._reSpace.test(this._text[n]))for(;this._reSpace.test(this._text[n]);)t++,n--;for(;/\S/.test(this._text[n])&&n>-1;)t++,n--;return e-t},findWordBoundaryRight:function(e){var t=0,n=e;if(this._reSpace.test(this._text[n]))for(;this._reSpace.test(this._text[n]);)t++,n++;for(;/\S/.test(this._text[n])&&n<this._text.length;)t++,n++;return e+t},findLineBoundaryLeft:function(e){for(var t=0,n=e-1;!/\n/.test(this._text[n])&&n>-1;)t++,n--;return e-t},findLineBoundaryRight:function(e){for(var t=0,n=e;!/\n/.test(this._text[n])&&n<this._text.length;)t++,n++;return e+t},searchWordBoundary:function(e,n){for(var r=this._text,i=this._reSpace.test(r[e])?e-1:e,a=r[i],o=t.reNonWord;!o.test(a)&&i>0&&i<r.length;)i+=n,a=r[i];return o.test(a)&&(i+=n===1?0:1),i},selectWord:function(e){e||=this.selectionStart;var t=this.searchWordBoundary(e,-1),n=this.searchWordBoundary(e,1);this.selectionStart=t,this.selectionEnd=n,this._fireSelectionChanged(),this._updateTextarea(),this.renderCursorOrSelection()},selectLine:function(e){e||=this.selectionStart;var t=this.findLineBoundaryLeft(e),n=this.findLineBoundaryRight(e);return this.selectionStart=t,this.selectionEnd=n,this._fireSelectionChanged(),this._updateTextarea(),this},enterEditing:function(e){if(!(this.isEditing||!this.editable))return this.canvas&&(this.canvas.calcOffset(),this.exitEditingOnOthers(this.canvas)),this.isEditing=!0,this.initHiddenTextarea(e),this.hiddenTextarea.focus(),this.hiddenTextarea.value=this.text,this._updateTextarea(),this._saveEditingProps(),this._setEditingProps(),this._textBeforeEdit=this.text,this._tick(),this.fire(`editing:entered`),this._fireSelectionChanged(),this.canvas?(this.canvas.fire(`text:editing:entered`,{target:this}),this.initMouseMoveHandler(),this.canvas.requestRenderAll(),this):this},exitEditingOnOthers:function(e){e._iTextInstances&&e._iTextInstances.forEach(function(e){e.selected=!1,e.isEditing&&e.exitEditing()})},initMouseMoveHandler:function(){this.canvas.on(`mouse:move`,this.mouseMoveHandler)},mouseMoveHandler:function(e){if(!(!this.__isMousedown||!this.isEditing)){document.activeElement!==this.hiddenTextarea&&this.hiddenTextarea.focus();var t=this.getSelectionStartFromPointer(e.e),n=this.selectionStart,r=this.selectionEnd;(t!==this.__selectionStartOnMouseDown||n===r)&&(n===t||r===t)||(t>this.__selectionStartOnMouseDown?(this.selectionStart=this.__selectionStartOnMouseDown,this.selectionEnd=t):(this.selectionStart=t,this.selectionEnd=this.__selectionStartOnMouseDown),(this.selectionStart!==n||this.selectionEnd!==r)&&(this.restartCursorIfNeeded(),this._fireSelectionChanged(),this._updateTextarea(),this.renderCursorOrSelection()))}},_setEditingProps:function(){this.hoverCursor=`text`,this.canvas&&(this.canvas.defaultCursor=this.canvas.moveCursor=`text`),this.borderColor=this.editingBorderColor,this.hasControls=this.selectable=!1,this.lockMovementX=this.lockMovementY=!0},fromStringToGraphemeSelection:function(e,n,r){var i=r.slice(0,e),a=t.util.string.graphemeSplit(i).length;if(e===n)return{selectionStart:a,selectionEnd:a};var o=r.slice(e,n);return{selectionStart:a,selectionEnd:a+t.util.string.graphemeSplit(o).length}},fromGraphemeToStringSelection:function(e,t,n){var r=n.slice(0,e).join(``).length;return e===t?{selectionStart:r,selectionEnd:r}:{selectionStart:r,selectionEnd:r+n.slice(e,t).join(``).length}},_updateTextarea:function(){if(this.cursorOffsetCache={},this.hiddenTextarea){if(!this.inCompositionMode){var e=this.fromGraphemeToStringSelection(this.selectionStart,this.selectionEnd,this._text);this.hiddenTextarea.selectionStart=e.selectionStart,this.hiddenTextarea.selectionEnd=e.selectionEnd}this.updateTextareaPosition()}},updateFromTextArea:function(){if(this.hiddenTextarea){this.cursorOffsetCache={},this.text=this.hiddenTextarea.value,this._shouldClearDimensionCache()&&(this.initDimensions(),this.setCoords());var e=this.fromStringToGraphemeSelection(this.hiddenTextarea.selectionStart,this.hiddenTextarea.selectionEnd,this.hiddenTextarea.value);this.selectionEnd=this.selectionStart=e.selectionEnd,this.inCompositionMode||(this.selectionStart=e.selectionStart),this.updateTextareaPosition()}},updateTextareaPosition:function(){if(this.selectionStart===this.selectionEnd){var e=this._calcTextareaPosition();this.hiddenTextarea.style.left=e.left,this.hiddenTextarea.style.top=e.top}},_calcTextareaPosition:function(){if(!this.canvas)return{x:1,y:1};var e=this.inCompositionMode?this.compositionStart:this.selectionStart,n=this._getCursorBoundaries(e),r=this.get2DCursorLocation(e),i=r.lineIndex,a=r.charIndex,o=this.getValueOfPropertyAt(i,a,`fontSize`)*this.lineHeight,s=n.leftOffset,c=this.calcTransformMatrix(),l={x:n.left+s,y:n.top+n.topOffset+o},u=this.canvas.getRetinaScaling(),d=this.canvas.upperCanvasEl,f=d.width/u,p=d.height/u,m=f-o,h=p-o,g=d.clientWidth/f,_=d.clientHeight/p;return l=t.util.transformPoint(l,c),l=t.util.transformPoint(l,this.canvas.viewportTransform),l.x*=g,l.y*=_,l.x<0&&(l.x=0),l.x>m&&(l.x=m),l.y<0&&(l.y=0),l.y>h&&(l.y=h),l.x+=this.canvas._offset.left,l.y+=this.canvas._offset.top,{left:l.x+`px`,top:l.y+`px`,fontSize:o+`px`,charHeight:o}},_saveEditingProps:function(){this._savedProps={hasControls:this.hasControls,borderColor:this.borderColor,lockMovementX:this.lockMovementX,lockMovementY:this.lockMovementY,hoverCursor:this.hoverCursor,selectable:this.selectable,defaultCursor:this.canvas&&this.canvas.defaultCursor,moveCursor:this.canvas&&this.canvas.moveCursor}},_restoreEditingProps:function(){this._savedProps&&(this.hoverCursor=this._savedProps.hoverCursor,this.hasControls=this._savedProps.hasControls,this.borderColor=this._savedProps.borderColor,this.selectable=this._savedProps.selectable,this.lockMovementX=this._savedProps.lockMovementX,this.lockMovementY=this._savedProps.lockMovementY,this.canvas&&(this.canvas.defaultCursor=this._savedProps.defaultCursor,this.canvas.moveCursor=this._savedProps.moveCursor))},exitEditing:function(){var e=this._textBeforeEdit!==this.text,t=this.hiddenTextarea;return this.selected=!1,this.isEditing=!1,this.selectionEnd=this.selectionStart,t&&(t.blur&&t.blur(),t.parentNode&&t.parentNode.removeChild(t)),this.hiddenTextarea=null,this.abortCursorAnimation(),this._restoreEditingProps(),this._currentCursorOpacity=0,this._shouldClearDimensionCache()&&(this.initDimensions(),this.setCoords()),this.fire(`editing:exited`),e&&this.fire(`modified`),this.canvas&&(this.canvas.off(`mouse:move`,this.mouseMoveHandler),this.canvas.fire(`text:editing:exited`,{target:this}),e&&this.canvas.fire(`object:modified`,{target:this})),this},_removeExtraneousStyles:function(){for(var e in this.styles)this._textLines[e]||delete this.styles[e]},removeStyleFromTo:function(e,t){var n=this.get2DCursorLocation(e,!0),r=this.get2DCursorLocation(t,!0),i=n.lineIndex,a=n.charIndex,o=r.lineIndex,s=r.charIndex,c,l;if(i!==o){if(this.styles[i])for(c=a;c<this._unwrappedTextLines[i].length;c++)delete this.styles[i][c];if(this.styles[o])for(c=s;c<this._unwrappedTextLines[o].length;c++)l=this.styles[o][c],l&&(this.styles[i]||(this.styles[i]={}),this.styles[i][a+c-s]=l);for(c=i+1;c<=o;c++)delete this.styles[c];this.shiftLineStyles(o,i-o)}else if(this.styles[i]){l=this.styles[i];var u=s-a,d,f;for(c=a;c<s;c++)delete l[c];for(f in this.styles[i])d=parseInt(f,10),d>=s&&(l[d-u]=l[f],delete l[f])}},shiftLineStyles:function(t,n){var r=e(this.styles);for(var i in this.styles){var a=parseInt(i,10);a>t&&(this.styles[a+n]=r[a],r[a-n]||delete this.styles[a])}},restartCursorIfNeeded:function(){(!this._currentTickState||this._currentTickState.isAborted||!this._currentTickCompleteState||this._currentTickCompleteState.isAborted)&&this.initDelayedCursor()},insertNewlineStyleObject:function(t,n,r,i){var a,o={},s=!1,c=this._unwrappedTextLines[t].length,l=c===n;for(var u in r||=1,this.shiftLineStyles(t,r),this.styles[t]&&(a=this.styles[t][n===0?n:n-1]),this.styles[t]){var d=parseInt(u,10);d>=n&&(s=!0,o[d-n]=this.styles[t][u],l&&n===0||delete this.styles[t][u])}var f=!1;for(s&&!l&&(this.styles[t+r]=o,f=!0),(f||c>n)&&r--;r>0;)i&&i[r-1]?this.styles[t+r]={0:e(i[r-1])}:a?this.styles[t+r]={0:e(a)}:delete this.styles[t+r],r--;this._forceClearCache=!0},insertCharStyleObject:function(t,n,r,i){this.styles||={};var a=this.styles[t],o=a?e(a):{};for(var s in r||=1,o){var c=parseInt(s,10);c>=n&&(a[c+r]=o[c],o[c-r]||delete a[c])}if(this._forceClearCache=!0,i){for(;r--;)Object.keys(i[r]).length&&(this.styles[t]||(this.styles[t]={}),this.styles[t][n+r]=e(i[r]));return}if(a)for(var l=a[n?n-1:1];l&&r--;)this.styles[t][n+r]=e(l)},insertNewStyleBlock:function(e,t,n){for(var r=this.get2DCursorLocation(t,!0),i=[0],a=0,o=0;o<e.length;o++)e[o]===`
-`?(a++,i[a]=0):i[a]++;i[0]>0&&(this.insertCharStyleObject(r.lineIndex,r.charIndex,i[0],n),n&&=n.slice(i[0]+1)),a&&this.insertNewlineStyleObject(r.lineIndex,r.charIndex+i[0],a);for(var o=1;o<a;o++)i[o]>0?this.insertCharStyleObject(r.lineIndex+o,0,i[o],n):n&&this.styles[r.lineIndex+o]&&n[0]&&(this.styles[r.lineIndex+o][0]=n[0]),n&&=n.slice(i[o]+1);i[o]>0&&this.insertCharStyleObject(r.lineIndex+o,0,i[o],n)},setSelectionStartEndWithShift:function(e,t,n){n<=e?(t===e?this._selectionDirection=`left`:this._selectionDirection===`right`&&(this._selectionDirection=`left`,this.selectionEnd=e),this.selectionStart=n):n>e&&n<t?this._selectionDirection===`right`?this.selectionEnd=n:this.selectionStart=n:(t===e?this._selectionDirection=`right`:this._selectionDirection===`left`&&(this._selectionDirection=`right`,this.selectionStart=t),this.selectionEnd=n)},setSelectionInBoundaries:function(){var e=this.text.length;this.selectionStart>e?this.selectionStart=e:this.selectionStart<0&&(this.selectionStart=0),this.selectionEnd>e?this.selectionEnd=e:this.selectionEnd<0&&(this.selectionEnd=0)}})})(),t.util.object.extend(t.IText.prototype,{initDoubleClickSimulation:function(){this.__lastClickTime=+new Date,this.__lastLastClickTime=+new Date,this.__lastPointer={},this.on(`mousedown`,this.onMouseDown)},onMouseDown:function(e){if(this.canvas){this.__newClickTime=+new Date;var t=e.pointer;this.isTripleClick(t)&&(this.fire(`tripleclick`,e),this._stopEvent(e.e)),this.__lastLastClickTime=this.__lastClickTime,this.__lastClickTime=this.__newClickTime,this.__lastPointer=t,this.__lastIsEditing=this.isEditing,this.__lastSelected=this.selected}},isTripleClick:function(e){return this.__newClickTime-this.__lastClickTime<500&&this.__lastClickTime-this.__lastLastClickTime<500&&this.__lastPointer.x===e.x&&this.__lastPointer.y===e.y},_stopEvent:function(e){e.preventDefault&&e.preventDefault(),e.stopPropagation&&e.stopPropagation()},initCursorSelectionHandlers:function(){this.initMousedownHandler(),this.initMouseupHandler(),this.initClicks()},doubleClickHandler:function(e){this.isEditing&&this.selectWord(this.getSelectionStartFromPointer(e.e))},tripleClickHandler:function(e){this.isEditing&&this.selectLine(this.getSelectionStartFromPointer(e.e))},initClicks:function(){this.on(`mousedblclick`,this.doubleClickHandler),this.on(`tripleclick`,this.tripleClickHandler)},_mouseDownHandler:function(e){!this.canvas||!this.editable||e.e.button&&e.e.button!==1||(this.__isMousedown=!0,this.selected&&(this.inCompositionMode=!1,this.setCursorByClick(e.e)),this.isEditing&&(this.__selectionStartOnMouseDown=this.selectionStart,this.selectionStart===this.selectionEnd&&this.abortCursorAnimation(),this.renderCursorOrSelection()))},_mouseDownHandlerBefore:function(e){!this.canvas||!this.editable||e.e.button&&e.e.button!==1||(this.selected=this===this.canvas._activeObject)},initMousedownHandler:function(){this.on(`mousedown`,this._mouseDownHandler),this.on(`mousedown:before`,this._mouseDownHandlerBefore)},initMouseupHandler:function(){this.on(`mouseup`,this.mouseUpHandler)},mouseUpHandler:function(e){if(this.__isMousedown=!1,!(!this.editable||this.group||e.transform&&e.transform.actionPerformed||e.e.button&&e.e.button!==1)){if(this.canvas){var t=this.canvas._activeObject;if(t&&t!==this)return}this.__lastSelected&&!this.__corner?(this.selected=!1,this.__lastSelected=!1,this.enterEditing(e.e),this.selectionStart===this.selectionEnd?this.initDelayedCursor(!0):this.renderCursorOrSelection()):this.selected=!0}},setCursorByClick:function(e){var t=this.getSelectionStartFromPointer(e),n=this.selectionStart,r=this.selectionEnd;e.shiftKey?this.setSelectionStartEndWithShift(n,r,t):(this.selectionStart=t,this.selectionEnd=t),this.isEditing&&(this._fireSelectionChanged(),this._updateTextarea())},getSelectionStartFromPointer:function(e){for(var t=this.getLocalPointer(e),n=0,r=0,i=0,a=0,o=0,s,c,l=0,u=this._textLines.length;l<u&&i<=t.y;l++)i+=this.getHeightOfLine(l)*this.scaleY,o=l,l>0&&(a+=this._textLines[l-1].length+this.missingNewlineOffset(l-1));s=this._getLineLeftOffset(o),r=s*this.scaleX,c=this._textLines[o],this.direction===`rtl`&&(t.x=this.width*this.scaleX-t.x+r);for(var d=0,f=c.length;d<f&&(n=r,r+=this.__charBounds[o][d].kernedWidth*this.scaleX,r<=t.x);d++)a++;return this._getNewSelectionStartFromOffset(t,n,r,a,f)},_getNewSelectionStartFromOffset:function(e,t,n,r,i){var a=e.x-t,o=n-e.x,s=r+(o>a||o<0?0:1);return this.flipX&&(s=i-s),s>this._text.length&&(s=this._text.length),s}}),t.util.object.extend(t.IText.prototype,{initHiddenTextarea:function(){this.hiddenTextarea=t.document.createElement(`textarea`),this.hiddenTextarea.setAttribute(`autocapitalize`,`off`),this.hiddenTextarea.setAttribute(`autocorrect`,`off`),this.hiddenTextarea.setAttribute(`autocomplete`,`off`),this.hiddenTextarea.setAttribute(`spellcheck`,`false`),this.hiddenTextarea.setAttribute(`data-fabric-hiddentextarea`,``),this.hiddenTextarea.setAttribute(`wrap`,`off`);var e=this._calcTextareaPosition();this.hiddenTextarea.style.cssText=`position: absolute; top: `+e.top+`; left: `+e.left+`; z-index: -999; opacity: 0; width: 1px; height: 1px; font-size: 1px; padding-top: `+e.fontSize+`;`,this.hiddenTextareaContainer?this.hiddenTextareaContainer.appendChild(this.hiddenTextarea):t.document.body.appendChild(this.hiddenTextarea),t.util.addListener(this.hiddenTextarea,`keydown`,this.onKeyDown.bind(this)),t.util.addListener(this.hiddenTextarea,`keyup`,this.onKeyUp.bind(this)),t.util.addListener(this.hiddenTextarea,`input`,this.onInput.bind(this)),t.util.addListener(this.hiddenTextarea,`copy`,this.copy.bind(this)),t.util.addListener(this.hiddenTextarea,`cut`,this.copy.bind(this)),t.util.addListener(this.hiddenTextarea,`paste`,this.paste.bind(this)),t.util.addListener(this.hiddenTextarea,`compositionstart`,this.onCompositionStart.bind(this)),t.util.addListener(this.hiddenTextarea,`compositionupdate`,this.onCompositionUpdate.bind(this)),t.util.addListener(this.hiddenTextarea,`compositionend`,this.onCompositionEnd.bind(this)),!this._clickHandlerInitialized&&this.canvas&&(t.util.addListener(this.canvas.upperCanvasEl,`click`,this.onClick.bind(this)),this._clickHandlerInitialized=!0)},keysMap:{9:`exitEditing`,27:`exitEditing`,33:`moveCursorUp`,34:`moveCursorDown`,35:`moveCursorRight`,36:`moveCursorLeft`,37:`moveCursorLeft`,38:`moveCursorUp`,39:`moveCursorRight`,40:`moveCursorDown`},keysMapRtl:{9:`exitEditing`,27:`exitEditing`,33:`moveCursorUp`,34:`moveCursorDown`,35:`moveCursorLeft`,36:`moveCursorRight`,37:`moveCursorRight`,38:`moveCursorUp`,39:`moveCursorLeft`,40:`moveCursorDown`},ctrlKeysMapUp:{67:`copy`,88:`cut`},ctrlKeysMapDown:{65:`selectAll`},onClick:function(){this.hiddenTextarea&&this.hiddenTextarea.focus()},onKeyDown:function(e){if(this.isEditing){var t=this.direction===`rtl`?this.keysMapRtl:this.keysMap;if(e.keyCode in t)this[t[e.keyCode]](e);else if(e.keyCode in this.ctrlKeysMapDown&&(e.ctrlKey||e.metaKey))this[this.ctrlKeysMapDown[e.keyCode]](e);else return;e.stopImmediatePropagation(),e.preventDefault(),e.keyCode>=33&&e.keyCode<=40?(this.inCompositionMode=!1,this.clearContextTop(),this.renderCursorOrSelection()):this.canvas&&this.canvas.requestRenderAll()}},onKeyUp:function(e){if(!this.isEditing||this._copyDone||this.inCompositionMode){this._copyDone=!1;return}if(e.keyCode in this.ctrlKeysMapUp&&(e.ctrlKey||e.metaKey))this[this.ctrlKeysMapUp[e.keyCode]](e);else return;e.stopImmediatePropagation(),e.preventDefault(),this.canvas&&this.canvas.requestRenderAll()},onInput:function(e){var n=this.fromPaste;if(this.fromPaste=!1,e&&e.stopPropagation(),this.isEditing){var r=this._splitTextIntoLines(this.hiddenTextarea.value).graphemeText,i=this._text.length,a=r.length,o,s,c=a-i,l=this.selectionStart,u=this.selectionEnd,d=l!==u,f,p,m;if(this.hiddenTextarea.value===``){this.styles={},this.updateFromTextArea(),this.fire(`changed`),this.canvas&&(this.canvas.fire(`text:changed`,{target:this}),this.canvas.requestRenderAll());return}var h=this.fromStringToGraphemeSelection(this.hiddenTextarea.selectionStart,this.hiddenTextarea.selectionEnd,this.hiddenTextarea.value),g=l>h.selectionStart;d?(o=this._text.slice(l,u),c+=u-l):a<i&&(o=g?this._text.slice(u+c,u):this._text.slice(l,l-c)),s=r.slice(h.selectionEnd-c,h.selectionEnd),o&&o.length&&(s.length&&(f=this.getSelectionStyles(l,l+1,!1),f=s.map(function(){return f[0]})),d?(p=l,m=u):g?(p=u-o.length,m=u):(p=u,m=u+o.length),this.removeStyleFromTo(p,m)),s.length&&(n&&s.join(``)===t.copiedText&&!t.disableStyleCopyPaste&&(f=t.copiedTextStyle),this.insertNewStyleBlock(s,l,f)),this.updateFromTextArea(),this.fire(`changed`),this.canvas&&(this.canvas.fire(`text:changed`,{target:this}),this.canvas.requestRenderAll())}},onCompositionStart:function(){this.inCompositionMode=!0},onCompositionEnd:function(){this.inCompositionMode=!1},onCompositionUpdate:function(e){this.compositionStart=e.target.selectionStart,this.compositionEnd=e.target.selectionEnd,this.updateTextareaPosition()},copy:function(){this.selectionStart!==this.selectionEnd&&(t.copiedText=this.getSelectedText(),t.disableStyleCopyPaste?t.copiedTextStyle=null:t.copiedTextStyle=this.getSelectionStyles(this.selectionStart,this.selectionEnd,!0),this._copyDone=!0)},paste:function(){this.fromPaste=!0},_getClipboardData:function(e){return e&&e.clipboardData||t.window.clipboardData},_getWidthBeforeCursor:function(e,t){var n=this._getLineLeftOffset(e),r;return t>0&&(r=this.__charBounds[e][t-1],n+=r.left+r.width),n},getDownCursorOffset:function(e,t){var n=this._getSelectionForOffset(e,t),r=this.get2DCursorLocation(n),i=r.lineIndex;if(i===this._textLines.length-1||e.metaKey||e.keyCode===34)return this._text.length-n;var a=r.charIndex,o=this._getWidthBeforeCursor(i,a),s=this._getIndexOnLine(i+1,o);return this._textLines[i].slice(a).length+s+1+this.missingNewlineOffset(i)},_getSelectionForOffset:function(e,t){return e.shiftKey&&this.selectionStart!==this.selectionEnd&&t?this.selectionEnd:this.selectionStart},getUpCursorOffset:function(e,t){var n=this._getSelectionForOffset(e,t),r=this.get2DCursorLocation(n),i=r.lineIndex;if(i===0||e.metaKey||e.keyCode===33)return-n;var a=r.charIndex,o=this._getWidthBeforeCursor(i,a),s=this._getIndexOnLine(i-1,o),c=this._textLines[i].slice(0,a),l=this.missingNewlineOffset(i-1);return-this._textLines[i-1].length+s-c.length+(1-l)},_getIndexOnLine:function(e,t){for(var n=this._textLines[e],r=this._getLineLeftOffset(e),i=0,a,o,s=0,c=n.length;s<c;s++)if(a=this.__charBounds[e][s].width,r+=a,r>t){o=!0;var l=r-a,u=r,d=Math.abs(l-t);i=Math.abs(u-t)<d?s:s-1;break}return o||(i=n.length-1),i},moveCursorDown:function(e){this.selectionStart>=this._text.length&&this.selectionEnd>=this._text.length||this._moveCursorUpOrDown(`Down`,e)},moveCursorUp:function(e){this.selectionStart===0&&this.selectionEnd===0||this._moveCursorUpOrDown(`Up`,e)},_moveCursorUpOrDown:function(e,t){var n=`get`+e+`CursorOffset`,r=this[n](t,this._selectionDirection===`right`);t.shiftKey?this.moveCursorWithShift(r):this.moveCursorWithoutShift(r),r!==0&&(this.setSelectionInBoundaries(),this.abortCursorAnimation(),this._currentCursorOpacity=1,this.initDelayedCursor(),this._fireSelectionChanged(),this._updateTextarea())},moveCursorWithShift:function(e){var t=this._selectionDirection===`left`?this.selectionStart+e:this.selectionEnd+e;return this.setSelectionStartEndWithShift(this.selectionStart,this.selectionEnd,t),e!==0},moveCursorWithoutShift:function(e){return e<0?(this.selectionStart+=e,this.selectionEnd=this.selectionStart):(this.selectionEnd+=e,this.selectionStart=this.selectionEnd),e!==0},moveCursorLeft:function(e){this.selectionStart===0&&this.selectionEnd===0||this._moveCursorLeftOrRight(`Left`,e)},_move:function(e,t,n){var r;if(e.altKey)r=this[`findWordBoundary`+n](this[t]);else if(e.metaKey||e.keyCode===35||e.keyCode===36)r=this[`findLineBoundary`+n](this[t]);else return this[t]+=n===`Left`?-1:1,!0;if(r!==void 0&&this[t]!==r)return this[t]=r,!0},_moveLeft:function(e,t){return this._move(e,t,`Left`)},_moveRight:function(e,t){return this._move(e,t,`Right`)},moveCursorLeftWithoutShift:function(e){var t=!0;return this._selectionDirection=`left`,this.selectionEnd===this.selectionStart&&this.selectionStart!==0&&(t=this._moveLeft(e,`selectionStart`)),this.selectionEnd=this.selectionStart,t},moveCursorLeftWithShift:function(e){if(this._selectionDirection===`right`&&this.selectionStart!==this.selectionEnd)return this._moveLeft(e,`selectionEnd`);if(this.selectionStart!==0)return this._selectionDirection=`left`,this._moveLeft(e,`selectionStart`)},moveCursorRight:function(e){this.selectionStart>=this._text.length&&this.selectionEnd>=this._text.length||this._moveCursorLeftOrRight(`Right`,e)},_moveCursorLeftOrRight:function(e,t){var n=`moveCursor`+e+`With`;this._currentCursorOpacity=1,t.shiftKey?n+=`Shift`:n+=`outShift`,this[n](t)&&(this.abortCursorAnimation(),this.initDelayedCursor(),this._fireSelectionChanged(),this._updateTextarea())},moveCursorRightWithShift:function(e){if(this._selectionDirection===`left`&&this.selectionStart!==this.selectionEnd)return this._moveRight(e,`selectionStart`);if(this.selectionEnd!==this._text.length)return this._selectionDirection=`right`,this._moveRight(e,`selectionEnd`)},moveCursorRightWithoutShift:function(e){var t=!0;return this._selectionDirection=`right`,this.selectionStart===this.selectionEnd?(t=this._moveRight(e,`selectionStart`),this.selectionEnd=this.selectionStart):this.selectionStart=this.selectionEnd,t},removeChars:function(e,t){t===void 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t=this._createBaseSVGMarkup(this._toSVG(),{reviver:e,noStyle:!0,withShadow:!0}),n=this.path;return n?t+n._createBaseSVGMarkup(n._toSVG(),{reviver:e,withShadow:!0}):t},_getSVGLeftTopOffsets:function(){return{textLeft:-this.width/2,textTop:-this.height/2,lineTop:this.getHeightOfLine(0)}},_wrapSVGTextAndBg:function(e){var t=!0,n=this.getSvgTextDecoration(this);return[e.textBgRects.join(``),`		<text xml:space="preserve" `,this.fontFamily?`font-family="`+this.fontFamily.replace(/"/g,`'`)+`" `:``,this.fontSize?`font-size="`+this.fontSize+`" `:``,this.fontStyle?`font-style="`+this.fontStyle+`" `:``,this.fontWeight?`font-weight="`+this.fontWeight+`" `:``,n?`text-decoration="`+n+`" `:``,`style="`,this.getSvgStyles(t),`"`,this.addPaintOrder(),` >`,e.textSpans.join(``),`</text>
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n=this._styleMap[e];e=n.line,t=n.offset+t,delete this.styles[e][t]},_getLineStyle:function(e){var t=this._styleMap[e];return!!this.styles[t.line]},_setLineStyle:function(e){var t=this._styleMap[e];this.styles[t.line]={}},_wrapText:function(e,t){var n=[],r;for(this.isWrapping=!0,r=0;r<e.length;r++)n=n.concat(this._wrapLine(e[r],r,t));return this.isWrapping=!1,n},_measureWord:function(e,t,n){var r=0,i,a=!0;n||=0;for(var o=0,s=e.length;o<s;o++){var c=this._getGraphemeBox(e[o],t,o+n,i,a);r+=c.kernedWidth,i=e[o]}return r},_wrapLine:function(e,n,r,i){var a=0,o=this.splitByGrapheme,s=[],c=[],l=o?t.util.string.graphemeSplit(e):e.split(this._wordJoiners),u=``,d=0,f=o?``:` `,p=0,m=0,h=0,g=!0,_=this._getWidthOfCharSpacing(),i=i||0;l.length===0&&l.push([]),r-=i;for(var v=0;v<l.length;v++)u=o?l[v]:t.util.string.graphemeSplit(l[v]),p=this._measureWord(u,n,d),d+=u.length,a+=m+p-_,a>r&&!g?(s.push(c),c=[],a=p,g=!0):a+=_,!g&&!o&&c.push(f),c=c.concat(u),m=o?0:this._measureWord([f],n,d),d++,g=!1,p>h&&(h=p);return v&&s.push(c),h+i>this.dynamicMinWidth&&(this.dynamicMinWidth=h-_+i),s},isEndOfWrapping:function(e){return!this._styleMap[e+1]||this._styleMap[e+1].line!==this._styleMap[e].line},missingNewlineOffset:function(e,t){return this.splitByGrapheme&&!t?+!!this.isEndOfWrapping(e):1},_splitTextIntoLines:function(e){for(var n=t.Text.prototype._splitTextIntoLines.call(this,e),r=this._wrapText(n.lines,this.width),i=Array(r.length),a=0;a<r.length;a++)i[a]=r[a].join(``);return n.lines=i,n.graphemeLines=r,n},getMinWidth:function(){return Math.max(this.minWidth,this.dynamicMinWidth)},_removeExtraneousStyles:function(){var e={};for(var t in this._styleMap)this._textLines[t]&&(e[this._styleMap[t].line]=1);for(var t in this.styles)e[t]||delete this.styles[t]},toObject:function(e){return this.callSuper(`toObject`,[`minWidth`,`splitByGrapheme`].concat(e))}}),t.Textbox.fromObject=function(e,n){var r=t.util.stylesFromArray(e.styles,e.text),i=Object.assign({},e,{styles:r});return delete i.path,t.Object._fromObject(`Textbox`,i,function(r){e.path?t.Object._fromObject(`Path`,e.path,function(e){r.set(`path`,e),n(r)},`path`):n(r)},`text`)}})(e),(function(){var e=t.controlsUtils,n=e.scaleSkewCursorStyleHandler,r=e.scaleCursorStyleHandler,i=e.scalingEqually,a=e.scalingYOrSkewingX,o=e.scalingXOrSkewingY,s=e.scaleOrSkewActionName,c=t.Object.prototype.controls;if(c.ml=new t.Control({x:-.5,y:0,cursorStyleHandler:n,actionHandler:o,getActionName:s}),c.mr=new t.Control({x:.5,y:0,cursorStyleHandler:n,actionHandler:o,getActionName:s}),c.mb=new t.Control({x:0,y:.5,cursorStyleHandler:n,actionHandler:a,getActionName:s}),c.mt=new t.Control({x:0,y:-.5,cursorStyleHandler:n,actionHandler:a,getActionName:s}),c.tl=new 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diff --git a/backend/public/icons.svg b/backend/public/icons.svg
deleted file mode 100644
index e952219..0000000
--- a/backend/public/icons.svg
+++ /dev/null
@@ -1,24 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg">
-  <symbol id="bluesky-icon" viewBox="0 0 16 17">
-    <g clip-path="url(#bluesky-clip)"><path fill="#08060d" d="M7.75 7.735c-.693-1.348-2.58-3.86-4.334-5.097-1.68-1.187-2.32-.981-2.74-.79C.188 2.065.1 2.812.1 3.251s.241 3.602.398 4.13c.52 1.744 2.367 2.333 4.07 2.145-2.495.37-4.71 1.278-1.805 4.512 3.196 3.309 4.38-.71 4.987-2.746.608 2.036 1.307 5.91 4.93 2.746 2.72-2.746.747-4.143-1.747-4.512 1.702.189 3.55-.4 4.07-2.145.156-.528.397-3.691.397-4.13s-.088-1.186-.575-1.406c-.42-.19-1.06-.395-2.741.79-1.755 1.24-3.64 3.752-4.334 5.099"/></g>
-    <defs><clipPath id="bluesky-clip"><path fill="#fff" d="M.1.85h15.3v15.3H.1z"/></clipPath></defs>
-  </symbol>
-  <symbol id="discord-icon" viewBox="0 0 20 19">
-    <path fill="#08060d" d="M16.224 3.768a14.5 14.5 0 0 0-3.67-1.153c-.158.286-.343.67-.47.976a13.5 13.5 0 0 0-4.067 0c-.128-.306-.317-.69-.476-.976A14.4 14.4 0 0 0 3.868 3.77C1.546 7.28.916 10.703 1.231 14.077a14.7 14.7 0 0 0 4.5 2.306q.545-.748.965-1.587a9.5 9.5 0 0 1-1.518-.74q.191-.14.372-.293c2.927 1.369 6.107 1.369 8.999 0q.183.152.372.294-.723.437-1.52.74.418.838.963 1.588a14.6 14.6 0 0 0 4.504-2.308c.37-3.911-.63-7.302-2.644-10.309m-9.13 8.234c-.878 0-1.599-.82-1.599-1.82 0-.998.705-1.82 1.6-1.82.894 0 1.614.82 1.599 1.82.001 1-.705 1.82-1.6 1.82m5.91 0c-.878 0-1.599-.82-1.599-1.82 0-.998.705-1.82 1.6-1.82.893 0 1.614.82 1.599 1.82 0 1-.706 1.82-1.6 1.82"/>
-  </symbol>
-  <symbol id="documentation-icon" viewBox="0 0 21 20">
-    <path fill="none" stroke="#aa3bff" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.35" d="m15.5 13.333 1.533 1.322c.645.555.967.833.967 1.178s-.322.623-.967 1.179L15.5 18.333m-3.333-5-1.534 1.322c-.644.555-.966.833-.966 1.178s.322.623.966 1.179l1.534 1.321"/>
-    <path fill="none" stroke="#aa3bff" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.35" d="M17.167 10.836v-4.32c0-1.41 0-2.117-.224-2.68-.359-.906-1.118-1.621-2.08-1.96-.599-.21-1.349-.21-2.848-.21-2.623 0-3.935 0-4.983.369-1.684.591-3.013 1.842-3.641 3.428C3 6.449 3 7.684 3 10.154v2.122c0 2.558 0 3.838.706 4.726q.306.383.713.671c.76.536 1.79.64 3.581.66"/>
-    <path fill="none" stroke="#aa3bff" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.35" d="M3 10a2.78 2.78 0 0 1 2.778-2.778c.555 0 1.209.097 1.748-.047.48-.129.854-.503.982-.982.145-.54.048-1.194.048-1.749a2.78 2.78 0 0 1 2.777-2.777"/>
-  </symbol>
-  <symbol id="github-icon" viewBox="0 0 19 19">
-    <path fill="#08060d" fill-rule="evenodd" d="M9.356 1.85C5.05 1.85 1.57 5.356 1.57 9.694a7.84 7.84 0 0 0 5.324 7.44c.387.079.528-.168.528-.376 0-.182-.013-.805-.013-1.454-2.165.467-2.616-.935-2.616-.935-.349-.91-.864-1.143-.864-1.143-.71-.48.051-.48.051-.48.787.051 1.2.805 1.2.805.695 1.194 1.817.857 2.268.649.064-.507.27-.857.49-1.052-1.728-.182-3.545-.857-3.545-3.87 0-.857.31-1.558.8-2.104-.078-.195-.349-1 .077-2.078 0 0 .657-.208 2.14.805a7.5 7.5 0 0 1 1.946-.26c.657 0 1.328.092 1.946.26 1.483-1.013 2.14-.805 2.14-.805.426 1.078.155 1.883.078 2.078.502.546.799 1.247.799 2.104 0 3.013-1.818 3.675-3.558 3.87.284.247.528.714.528 1.454 0 1.052-.012 1.896-.012 2.156 0 .208.142.455.528.377a7.84 7.84 0 0 0 5.324-7.441c.013-4.338-3.48-7.844-7.773-7.844" clip-rule="evenodd"/>
-  </symbol>
-  <symbol id="social-icon" viewBox="0 0 20 20">
-    <path fill="none" stroke="#aa3bff" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.35" d="M12.5 6.667a4.167 4.167 0 1 0-8.334 0 4.167 4.167 0 0 0 8.334 0"/>
-    <path fill="none" stroke="#aa3bff" stroke-linecap="round" stroke-linejoin="round" stroke-width="1.35" d="M2.5 16.667a5.833 5.833 0 0 1 8.75-5.053m3.837.474.513 1.035c.07.144.257.282.414.309l.93.155c.596.1.736.536.307.965l-.723.73a.64.64 0 0 0-.152.531l.207.903c.164.715-.213.991-.84.618l-.872-.52a.63.63 0 0 0-.577 0l-.872.52c-.624.373-1.003.094-.84-.618l.207-.903a.64.64 0 0 0-.152-.532l-.723-.729c-.426-.43-.289-.864.306-.964l.93-.156a.64.64 0 0 0 .412-.31l.513-1.034c.28-.562.735-.562 1.012 0"/>
-  </symbol>
-  <symbol id="x-icon" viewBox="0 0 19 19">
-    <path fill="#08060d" fill-rule="evenodd" d="M1.893 1.98c.052.072 1.245 1.769 2.653 3.77l2.892 4.114c.183.261.333.48.333.486s-.068.089-.152.183l-.522.593-.765.867-3.597 4.087c-.375.426-.734.834-.798.905a1 1 0 0 0-.118.148c0 .01.236.017.664.017h.663l.729-.83c.4-.457.796-.906.879-.999a692 692 0 0 0 1.794-2.038c.034-.037.301-.34.594-.675l.551-.624.345-.392a7 7 0 0 1 .34-.374c.006 0 .93 1.306 2.052 2.903l2.084 2.965.045.063h2.275c1.87 0 2.273-.003 2.266-.021-.008-.02-1.098-1.572-3.894-5.547-2.013-2.862-2.28-3.246-2.273-3.266.008-.019.282-.332 2.085-2.38l2-2.274 1.567-1.782c.022-.028-.016-.03-.65-.03h-.674l-.3.342a871 871 0 0 1-1.782 2.025c-.067.075-.405.458-.75.852a100 100 0 0 1-.803.91c-.148.172-.299.344-.99 1.127-.304.343-.32.358-.345.327-.015-.019-.904-1.282-1.976-2.808L6.365 1.85H1.8zm1.782.91 8.078 11.294c.772 1.08 1.413 1.973 1.425 1.984.016.017.241.02 1.05.017l1.03-.004-2.694-3.766L7.796 5.75 5.722 2.852l-1.039-.004-1.039-.004z" clip-rule="evenodd"/>
-  </symbol>
-</svg>
diff --git a/backend/public/index.html b/backend/public/index.html
deleted file mode 100644
index d0f062a..0000000
--- a/backend/public/index.html
+++ /dev/null
@@ -1,14 +0,0 @@
-<!doctype html>
-<html lang="en">
-  <head>
-    <meta charset="UTF-8" />
-    <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>frontend</title>
-    <script type="module" crossorigin src="/assets/index-Bdiu6cTh.js"></script>
-    <link rel="stylesheet" crossorigin href="/assets/index-X7gJsvPn.css">
-  </head>
-  <body>
-    <div id="root"></div>
-  </body>
-</html>
diff --git a/backend/routes/auth.js b/backend/routes/auth.js
deleted file mode 100644
index 5881efc..0000000
--- a/backend/routes/auth.js
+++ /dev/null
@@ -1,53 +0,0 @@
-const express = require('express');
-const jwt = require('jsonwebtoken');
-const User = require('../models/User');
-const authenticate = require('../middleware/auth');
-
-const router = express.Router();
-const JWT_SECRET = process.env.JWT_SECRET || 'dev_secret_change_in_production';
-
-// Register
-router.post('/register', async (req, res) => {
-  try {
-    const { email, password } = req.body;
-    if (!email || !password) {
-      return res.status(400).json({ error: 'Email and password required' });
-    }
-    const existing = await User.findOne({ where: { email } });
-    if (existing) {
-      return res.status(409).json({ error: 'User already exists' });
-    }
-    const user = await User.create({ email, password });
-    const token = jwt.sign({ id: user.id, email: user.email }, JWT_SECRET, { expiresIn: '7d' });
-    res.status(201).json({ token, user: { id: user.id, email: user.email } });
-  } catch (err) {
-    console.error(err);
-    res.status(500).json({ error: 'Registration failed' });
-  }
-});
-
-// Login
-router.post('/login', async (req, res) => {
-  try {
-    const { email, password } = req.body;
-    if (!email || !password) {
-      return res.status(400).json({ error: 'Email and password required' });
-    }
-    const user = await User.findOne({ where: { email } });
-    if (!user || !(await user.validatePassword(password))) {
-      return res.status(401).json({ error: 'Invalid credentials' });
-    }
-    const token = jwt.sign({ id: user.id, email: user.email }, JWT_SECRET, { expiresIn: '7d' });
-    res.json({ token, user: { id: user.id, email: user.email } });
-  } catch (err) {
-    console.error(err);
-    res.status(500).json({ error: 'Login failed' });
-  }
-});
-
-// Get current user
-router.get('/me', authenticate, async (req, res) => {
-  res.json({ id: req.user.id, email: req.user.email });
-});
-
-module.exports = router;
diff --git a/backend/routes/blocks.js b/backend/routes/blocks.js
deleted file mode 100644
index faa4af6..0000000
--- a/backend/routes/blocks.js
+++ /dev/null
@@ -1,59 +0,0 @@
-const express = require('express');
-const authenticate = require('../middleware/auth');
-const Block = require('../models/Block');
-
-const router = express.Router();
-
-// Public blocks (no auth for listing)
-router.get('/', async (req, res) => {
-  try {
-    const blocks = await Block.findAll({
-      where: { is_public: true },
-      attributes: ['id', 'name', 'svg_data', 'category'],
-    });
-    res.json(blocks);
-  } catch (err) {
-    console.error(err);
-    res.status(500).json({ error: 'Failed to list blocks' });
-  }
-});
-
-// Protected: create a new block (requires auth)
-router.post('/', authenticate, async (req, res) => {
-  try {
-    const { name, svg_data, category, is_public } = req.body;
-    if (!name || !svg_data) {
-      return res.status(400).json({ error: 'Name and svg_data required' });
-    }
-    const block = await Block.create({
-      name,
-      svg_data,
-      category: category || 'Allgemein',
-      is_public: is_public !== undefined ? is_public : true,
-      userId: req.user.id,
-    });
-    res.status(201).json(block);
-  } catch (err) {
-    console.error(err);
-    res.status(500).json({ error: 'Failed to create block' });
-  }
-});
-
-// Protected: delete block (only owner)
-router.delete('/:id', authenticate, async (req, res) => {
-  try {
-    const block = await Block.findOne({
-      where: { id: req.params.id, userId: req.user.id },
-    });
-    if (!block) {
-      return res.status(404).json({ error: 'Block not found or not authorized' });
-    }
-    await block.destroy();
-    res.json({ message: 'Block deleted' });
-  } catch (err) {
-    console.error(err);
-    res.status(500).json({ error: 'Failed to delete block' });
-  }
-});
-
-module.exports = router;
diff --git a/backend/routes/drawings.js b/backend/routes/drawings.js
deleted file mode 100644
index 078362e..0000000
--- a/backend/routes/drawings.js
+++ /dev/null
@@ -1,94 +0,0 @@
-const express = require('express');
-const authenticate = require('../middleware/auth');
-const Drawing = require('../models/Drawing');
-
-const router = express.Router();
-
-// All routes require authentication
-router.use(authenticate);
-
-// List drawings for current user
-router.get('/', async (req, res) => {
-  try {
-    const drawings = await Drawing.findAll({
-      where: { userId: req.user.id },
-      attributes: ['id', 'name', 'updatedAt'],
-      order: [['updatedAt', 'DESC']],
-    });
-    res.json(drawings);
-  } catch (err) {
-    console.error(err);
-    res.status(500).json({ error: 'Failed to list drawings' });
-  }
-});
-
-// Create new drawing
-router.post('/', async (req, res) => {
-  try {
-    const { name, canvas_json } = req.body;
-    const drawing = await Drawing.create({
-      name: name || 'Unbenannt',
-      canvas_json: canvas_json || '',
-      userId: req.user.id,
-    });
-    res.status(201).json(drawing);
-  } catch (err) {
-    console.error(err);
-    res.status(500).json({ error: 'Failed to create drawing' });
-  }
-});
-
-// Get single drawing
-router.get('/:id', async (req, res) => {
-  try {
-    const drawing = await Drawing.findOne({
-      where: { id: req.params.id, userId: req.user.id },
-    });
-    if (!drawing) {
-      return res.status(404).json({ error: 'Drawing not found' });
-    }
-    res.json(drawing);
-  } catch (err) {
-    console.error(err);
-    res.status(500).json({ error: 'Failed to get drawing' });
-  }
-});
-
-// Update drawing
-router.put('/:id', async (req, res) => {
-  try {
-    const drawing = await Drawing.findOne({
-      where: { id: req.params.id, userId: req.user.id },
-    });
-    if (!drawing) {
-      return res.status(404).json({ error: 'Drawing not found' });
-    }
-    const { name, canvas_json } = req.body;
-    if (name !== undefined) drawing.name = name;
-    if (canvas_json !== undefined) drawing.canvas_json = canvas_json;
-    await drawing.save();
-    res.json(drawing);
-  } catch (err) {
-    console.error(err);
-    res.status(500).json({ error: 'Failed to update drawing' });
-  }
-});
-
-// Delete drawing
-router.delete('/:id', async (req, res) => {
-  try {
-    const drawing = await Drawing.findOne({
-      where: { id: req.params.id, userId: req.user.id },
-    });
-    if (!drawing) {
-      return res.status(404).json({ error: 'Drawing not found' });
-    }
-    await drawing.destroy();
-    res.json({ message: 'Drawing deleted' });
-  } catch (err) {
-    console.error(err);
-    res.status(500).json({ error: 'Failed to delete drawing' });
-  }
-});
-
-module.exports = router;
diff --git a/backend/routes/dxf.js b/backend/routes/dxf.js
deleted file mode 100644
index cd84347..0000000
--- a/backend/routes/dxf.js
+++ /dev/null
@@ -1,101 +0,0 @@
-const express = require('express');
-const authenticate = require('../middleware/auth');
-const multer = require('multer');
-const { parseString } = require('dxf-parser');
-const router = express.Router();
-const upload = multer({ storage: multer.memoryStorage(), limits: { fileSize: 10 * 1024 * 1024 } });
-
-// Upload DXF file -> parse and return JSON representation (Fabric.js compatible)
-router.post('/import', authenticate, upload.single('file'), async (req, res) => {
-  try {
-    if (!req.file) {
-      return res.status(400).json({ error: 'No file uploaded' });
-    }
-    const dxfContent = req.file.buffer.toString('utf-8');
-    console.log('DXF file size:', dxfContent.length);
-    const parsed = parseString(dxfContent);
-    // Convert parsed entities to Fabric.js objects (simplified)
-    const fabricObjects = [];
-    if (parsed && parsed.entities) {
-      parsed.entities.forEach(entity => {
-        const type = entity.type;
-        if (type === 'LINE') {
-          fabricObjects.push({
-            type: 'line',
-            x1: entity.start.x, y1: entity.start.y,
-            x2: entity.end.x, y2: entity.end.y,
-            stroke: '#000', strokeWidth: 1,
-          });
-        } else if (type === 'CIRCLE') {
-          fabricObjects.push({
-            type: 'circle',
-            left: entity.center.x - entity.radius,
-            top: entity.center.y - entity.radius,
-            radius: entity.radius,
-            fill: 'transparent', stroke: '#000',
-          });
-        } else if (type === 'ARC') {
-          // simplified arc handling
-          fabricObjects.push({
-            type: 'path',
-            path: `M ${entity.center.x} ${entity.center.y}`, // placeholder
-            stroke: '#000', strokeWidth: 1,
-          });
-        } else if (type === 'POLYLINE' || type === 'LWPOLYLINE') {
-          // convert vertices to polygon
-          if (entity.vertices && entity.vertices.length >= 2) {
-            const points = entity.vertices.map(v => ({ x: v.x, y: v.y }));
-            fabricObjects.push({
-              type: 'polygon',
-              points,
-              stroke: '#000', strokeWidth: 1, fill: 'transparent',
-            });
-          }
-        }
-      });
-    }
-    res.json({ objects: fabricObjects });
-  } catch (err) {
-    console.error('DXF import error:', err);
-    res.status(500).json({ error: 'Failed to parse DXF file: ' + err.message });
-  }
-});
-
-// Export canvas JSON to DXF string
-router.post('/export', authenticate, (req, res) => {
-  try {
-    const { objects } = req.body;
-    if (!objects || !Array.isArray(objects)) {
-      return res.status(400).json({ error: 'Invalid objects array' });
-    }
-    // Build DXF content
-    let dxf = '0\nSECTION\n2\nHEADER\n0\nENDSEC\n';
-    dxf += '0\nSECTION\n2\nTABLES\n0\nENDSEC\n';
-    dxf += '0\nSECTION\n2\nBLOCKS\n0\nENDSEC\n';
-    dxf += '0\nSECTION\n2\nENTITIES\n';
-    objects.forEach(obj => {
-      if (obj.type === 'line') {
-        dxf += `0\nLINE\n8\n0\n10\n${obj.x1}\n20\n${obj.y1}\n11\n${obj.x2}\n21\n${obj.y2}\n`;
-      } else if (obj.type === 'circle') {
-        const cx = obj.left + obj.radius;
-        const cy = obj.top + obj.radius;
-        dxf += `0\nCIRCLE\n8\n0\n10\n${cx}\n20\n${cy}\n40\n${obj.radius}\n`;
-      } else if (obj.type === 'polygon') {
-        // LWPOLYLINE
-        dxf += `0\nLWPOLYLINE\n8\n0\n90\n${obj.points.length}\n`;
-        obj.points.forEach((pt, i) => {
-          dxf += `10\n${pt.x}\n20\n${pt.y}\n`;
-        });
-      }
-    });
-    dxf += '0\nENDSEC\n0\nEOF\n';
-    res.setHeader('Content-Type', 'application/dxf');
-    res.setHeader('Content-Disposition', 'attachment; filename=drawing.dxf');
-    res.send(dxf);
-  } catch (err) {
-    console.error('DXF export error:', err);
-    res.status(500).json({ error: 'Export failed' });
-  }
-});
-
-module.exports = router;
diff --git a/backend/routes/plugins.js b/backend/routes/plugins.js
deleted file mode 100644
index 404c72e..0000000
--- a/backend/routes/plugins.js
+++ /dev/null
@@ -1,56 +0,0 @@
-const express = require('express');
-const fs = require('fs');
-const path = require('path');
-
-const router = express.Router();
-const PLUGINS_DIR = path.join(__dirname, '..', 'plugins');
-
-// Ensure plugins directory exists
-if (!fs.existsSync(PLUGINS_DIR)) {
-  fs.mkdirSync(PLUGINS_DIR, { recursive: true });
-}
-
-// List all available plugins
-router.get('/', (req, res) => {
-  try {
-    if (!fs.existsSync(PLUGINS_DIR)) {
-      return res.json([]);
-    }
-    const plugins = [];
-    const dirs = fs.readdirSync(PLUGINS_DIR);
-    for (const dir of dirs) {
-      const pluginPath = path.join(PLUGINS_DIR, dir);
-      const manifestPath = path.join(pluginPath, 'plugin.json');
-      if (fs.existsSync(manifestPath)) {
-        try {
-          const manifest = JSON.parse(fs.readFileSync(manifestPath, 'utf-8'));
-          plugins.push({ id: dir, ...manifest });
-        } catch (e) {
-          console.warn(`Invalid plugin manifest: ${dir}`);
-        }
-      }
-    }
-    res.json(plugins);
-  } catch (err) {
-    console.error('Plugin list error:', err);
-    res.status(500).json({ error: 'Failed to list plugins' });
-  }
-});
-
-// Serve plugin code as JavaScript module
-router.get('/:id/code', (req, res) => {
-  try {
-    const pluginDir = path.join(PLUGINS_DIR, req.params.id);
-    const codePath = path.join(pluginDir, 'plugin.js');
-    if (!fs.existsSync(codePath)) {
-      return res.status(404).json({ error: 'Plugin code not found' });
-    }
-    res.setHeader('Content-Type', 'application/javascript');
-    res.sendFile(codePath);
-  } catch (err) {
-    console.error('Plugin code error:', err);
-    res.status(500).json({ error: 'Failed to load plugin code' });
-  }
-});
-
-module.exports = router;
diff --git a/backend/seed.js b/backend/seed.js
deleted file mode 100644
index 6b5db0e..0000000
--- a/backend/seed.js
+++ /dev/null
@@ -1,142 +0,0 @@
-const { sequelize, connectDB } = require('./config/database');
-const Block = require('./models/Block');
-const bcrypt = require('bcryptjs');
-
-const eventBlocks = [
-  {
-    name: 'Stuhl (Standard)',
-    category: 'Bestuhlung',
-    is_public: true,
-    svg_data: `<svg viewBox="0 0 40 40">
-<rect x="5" y="5" width="30" height="30" rx="2" fill="#4a90d9" stroke="#2c5f8a" stroke-width="2"/>
-<rect x="10" y="28" width="20" height="4" rx="1" fill="#d4e6f1"/>
-<circle cx="20" cy="18" r="8" fill="#d4e6f1" stroke="#2c5f8a" stroke-width="1.5"/>
-</svg>`
-  },
-  {
-    name: 'Tisch (Rechteck 180x80)',
-    category: 'Möbel',
-    is_public: true,
-    svg_data: `<svg viewBox="0 0 180 80">
-<rect x="0" y="0" width="180" height="80" rx="4" fill="#e8d5b7" stroke="#8b7355" stroke-width="2"/>
-<rect x="5" y="5" width="170" height="70" rx="2" fill="#f5ead0" stroke="#c4a882" stroke-width="1"/>
-</svg>`
-  },
-  {
-    name: 'Tisch (Rund Ø120)',
-    category: 'Möbel',
-    is_public: true,
-    svg_data: `<svg viewBox="0 0 120 120">
-<circle cx="60" cy="60" r="58" fill="#e8d5b7" stroke="#8b7355" stroke-width="2"/>
-<circle cx="60" cy="60" r="50" fill="#f5ead0" stroke="#c4a882" stroke-width="1"/>
-</svg>`
-  },
-  {
-    name: 'Bühne (Modular 200x100)',
-    category: 'Bühne',
-    is_public: true,
-    svg_data: `<svg viewBox="0 0 200 100">
-<rect x="0" y="0" width="200" height="100" fill="#8b7355" stroke="#6b5335" stroke-width="2"/>
-<line x1="0" y1="25" x2="200" y2="25" stroke="#a08060" stroke-width="1"/>
-<line x1="0" y1="50" x2="200" y2="50" stroke="#a08060" stroke-width="1"/>
-<line x1="0" y1="75" x2="200" y2="75" stroke="#a08060" stroke-width="1"/>
-<line x1="50" y1="0" x2="50" y2="100" stroke="#a08060" stroke-width="1"/>
-<line x1="100" y1="0" x2="100" y2="100" stroke="#a08060" stroke-width="1"/>
-<line x1="150" y1="0" x2="150" y2="100" stroke="#a08060" stroke-width="1"/>
-</svg>`
-  },
-  {
-    name: 'Stehtisch',
-    category: 'Möbel',
-    is_public: true,
-    svg_data: `<svg viewBox="0 0 60 60">
-<circle cx="30" cy="30" r="28" fill="#e8d5b7" stroke="#8b7355" stroke-width="2"/>
-<circle cx="30" cy="30" r="24" fill="#f5ead0" stroke="#c4a882" stroke-width="1"/>
-<circle cx="30" cy="30" r="5" fill="#8b7355"/>
-</svg>`
-  },
-  {
-    name: 'Barhocker',
-    category: 'Bestuhlung',
-    is_public: true,
-    svg_data: `<svg viewBox="0 0 30 30">
-<circle cx="15" cy="12" r="10" fill="#4a90d9" stroke="#2c5f8a" stroke-width="2"/>
-<rect x="12" y="20" width="6" height="8" fill="#7f8c8d"/>
-</svg>`
-  },
-  {
-    name: 'Mischpult',
-    category: 'Technik',
-    is_public: true,
-    svg_data: `<svg viewBox="0 0 120 60">
-<rect x="0" y="0" width="120" height="60" rx="3" fill="#2c3e50" stroke="#1a252f" stroke-width="2"/>
-<rect x="5" y="5" width="110" height="15" fill="#34495e" stroke="#2c3e50" stroke-width="1"/>
-<circle cx="20" cy="40" r="5" fill="#e74c3c"/>
-<circle cx="40" cy="40" r="5" fill="#e67e22"/>
-<circle cx="60" cy="40" r="5" fill="#f1c40f"/>
-<circle cx="80" cy="40" r="5" fill="#3498db"/>
-<circle cx="100" cy="40" r="5" fill="#2ecc71"/>
-</svg>`
-  },
-  {
-    name: 'Lautsprecher',
-    category: 'Technik',
-    is_public: true,
-    svg_data: `<svg viewBox="0 0 40 60">
-<rect x="0" y="0" width="40" height="60" rx="3" fill="#34495e" stroke="#1a252f" stroke-width="2"/>
-<rect x="8" y="8" width="24" height="25" rx="12" fill="#1a252f"/>
-<circle cx="20" cy="20" r="6" fill="#7f8c8d"/>
-<rect x="8" y="40" width="24" height="5" rx="2" fill="#1a252f"/>
-</svg>`
-  },
-  {
-    name: 'Trennwand',
-    category: 'Raum',
-    is_public: true,
-    svg_data: `<svg viewBox="0 0 10 100">
-<rect x="0" y="0" width="10" height="100" fill="#bdc3c7" stroke="#7f8c8d" stroke-width="1"/>
-<line x1="2" y1="0" x2="2" y2="100" stroke="#95a5a6" stroke-width="0.5"/>
-<line x1="5" y1="0" x2="5" y2="100" stroke="#95a5a6" stroke-width="0.5"/>
-<line x1="8" y1="0" x2="8" y2="100" stroke="#95a5a6" stroke-width="0.5"/>
-</svg>`
-  },
-  {
-    name: 'Notausgang-Schild',
-    category: 'Sicherheit',
-    is_public: true,
-    svg_data: `<svg viewBox="0 0 40 20">
-<rect x="0" y="0" width="40" height="20" rx="2" fill="#27ae60" stroke="#1e8449" stroke-width="1"/>
-<polygon points="8,5 3,10 8,15 7,15 2,10 7,5" fill="white"/>
-<text x="20" y="15" font-size="8" fill="white" text-anchor="middle" font-family="Arial">EXIT</text>
-</svg>`
-  },
-];
-
-async function seed() {
-  try {
-    await connectDB();
-    // Use raw SQL to create user, bcrypt hashing via sequelize might fail, so we do raw
-    const hashedPassword = bcrypt.hashSync('admin123', 10);
-    await sequelize.query(`
-      INSERT INTO "Users" ("email", "password", "createdAt", "updatedAt")
-      VALUES (:email, :password, datetime('now'), datetime('now'))
-      ON CONFLICT ("email") DO NOTHING;
-    `, {
-      replacements: { email: 'admin@cad.local', password: hashedPassword },
-      type: sequelize.QueryTypes.INSERT
-    });
-    console.log('Admin user ensured.');
-    // Clear existing blocks
-    await Block.destroy({ where: {} });
-    console.log('Existing blocks cleared.');
-    for (const block of eventBlocks) {
-      await Block.create(block);
-    }
-    console.log(`${eventBlocks.length} blocks created.`);
-    process.exit(0);
-  } catch (err) {
-    console.error('Seed failed:', err);
-    process.exit(1);
-  }
-}
-seed();
diff --git a/backend/server.js b/backend/server.js
deleted file mode 100644
index a43e975..0000000
--- a/backend/server.js
+++ /dev/null
@@ -1,47 +0,0 @@
-const express = require('express');
-const cors = require('cors');
-const passport = require('passport');
-require('./config/passport'); // Load JWT strategy
-const User = require('./models/User');
-const Block = require('./models/Block');
-const { sequelize, connectDB } = require('./config/database');
-
-const app = express();
-const PORT = process.env.PORT || 5000;
-
-// Middleware
-app.use(cors());
-app.use(express.json({ limit: '50mb' }));
-app.use(passport.initialize());
-
-// Serve static frontend
-app.use(express.static('public'));
-
-// Routes
-app.use('/api/auth', require('./routes/auth'));
-app.use('/api/drawings', require('./routes/drawings'));
-app.use('/api/blocks', require('./routes/blocks'));
-app.use('/api/dxf', require('./routes/dxf'));
-app.use('/api/plugins', require('./routes/plugins'));
-
-// Health check
-app.get('/api/health', (req, res) => res.json({ status: 'ok' }));
-
-// SPA fallback – serve index.html for all non-API routes
-app.get(/^(?!\/api\/).*/, (req, res) => {
-  res.sendFile('public/index.html', { root: __dirname });
-});
-
-// Connect DB and start
-connectDB().then(() => sequelize.sync({ force: false })).then(async () => {
-  // Seed admin user if not exists
-  const bcrypt = require('bcryptjs');
-  const existing = await User.findOne({ where: { email: 'admin@cad.local' } });
-  if (!existing) {
-    await User.create({ email: 'admin@cad.local', password: 'admin123' });
-    console.log('Admin user created: admin@cad.local / admin123');
-  }
-  app.listen(PORT, () => console.log(`Server running on port ${PORT}`));
-}).catch(err => {
-  console.error('Unable to start server:', err);
-});
\ No newline at end of file
diff --git a/backend/src/auth/AuthService.ts b/backend/src/auth/AuthService.ts
new file mode 100644
index 0000000..8e20f18
--- /dev/null
+++ b/backend/src/auth/AuthService.ts
@@ -0,0 +1,98 @@
+/**
+ * AuthService – Registration, Login, Session Management
+ */
+import bcrypt from 'bcrypt';
+import { randomUUID } from 'crypto';
+import type { DatabaseInterface, DBUser, DBSession } from '../database/DatabaseInterface.js';
+
+const SALT_ROUNDS = 10;
+const SESSION_TTL_MS = 24 * 60 * 60 * 1000; // 24 hours
+
+export interface Session {
+  token: string;
+  userId: string;
+  expiresAt: number;
+}
+
+export interface AuthResult {
+  user: Omit<DBUser, 'password_hash'>;
+  session: Session;
+}
+
+export class AuthService {
+  constructor(private db: DatabaseInterface) {}
+
+  async register(email: string, password: string, name: string, role: string = 'planer'): Promise<AuthResult> {
+    const existing = this.db.getUserByEmail(email);
+    if (existing) {
+      throw new Error('Email already registered');
+    }
+
+    const password_hash = await bcrypt.hash(password, SALT_ROUNDS);
+    const user = this.db.createUser({ email, password_hash, name, role });
+    const session = this.createSession(user.id);
+    return { user: this.sanitizeUser(user), session };
+  }
+
+  async login(email: string, password: string): Promise<AuthResult> {
+    const user = this.db.getUserByEmail(email);
+    if (!user) {
+      throw new Error('Invalid credentials');
+    }
+
+    const valid = await bcrypt.compare(password, user.password_hash);
+    if (!valid) {
+      throw new Error('Invalid credentials');
+    }
+
+    const session = this.createSession(user.id);
+    return { user: this.sanitizeUser(user), session };
+  }
+
+  async changePassword(userId: string, oldPassword: string, newPassword: string): Promise<void> {
+    const user = this.db.getUser(userId);
+    if (!user) throw new Error('User not found');
+
+    const valid = await bcrypt.compare(oldPassword, user.password_hash);
+    if (!valid) throw new Error('Invalid current password');
+
+    const password_hash = await bcrypt.hash(newPassword, SALT_ROUNDS);
+    this.db.updateUser(userId, { password_hash });
+  }
+
+  createSession(userId: string): Session {
+    const token = randomUUID();
+    const expiresAt = Date.now() + SESSION_TTL_MS;
+    this.db.createSession({ token, user_id: userId, expires_at: expiresAt });
+    return { token, userId, expiresAt };
+  }
+
+  validateSession(token: string): Session | null {
+    const dbSession = this.db.getSession(token);
+    if (!dbSession) return null;
+    if (Date.now() > dbSession.expires_at) {
+      this.db.deleteSession(token);
+      return null;
+    }
+    return {
+      token: dbSession.token,
+      userId: dbSession.user_id,
+      expiresAt: dbSession.expires_at,
+    };
+  }
+
+  destroySession(token: string): void {
+    this.db.deleteSession(token);
+  }
+
+  getUserFromSession(token: string): DBUser | null {
+    const session = this.validateSession(token);
+    if (!session) return null;
+    return this.db.getUser(session.userId);
+  }
+
+  private sanitizeUser(user: DBUser): Omit<DBUser, 'password_hash'> {
+    const { password_hash, ...safe } = user;
+    return safe;
+  }
+}
diff --git a/backend/src/database/DatabaseInterface.ts b/backend/src/database/DatabaseInterface.ts
new file mode 100644
index 0000000..8cd7c71
--- /dev/null
+++ b/backend/src/database/DatabaseInterface.ts
@@ -0,0 +1,135 @@
+/**
+ * Database Interface – abstract DB layer for Web CAD
+ */
+
+export interface DBProject {
+  id: string;
+  name: string;
+  description: string | null;
+  owner_id: string;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface DBDrawing {
+  id: string;
+  project_id: string;
+  name: string;
+  data_json: string;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface DBLayer {
+  id: string;
+  drawing_id: string;
+  name: string;
+  visible: number;
+  locked: number;
+  color: string;
+  line_type: string;
+  transparency: number;
+  sort_order: number;
+  parent_id: string | null;
+}
+
+export interface DBElement {
+  id: string;
+  drawing_id: string;
+  layer_id: string;
+  type: string;
+  x: number;
+  y: number;
+  width: number;
+  height: number;
+  properties_json: string;
+  created_at: string;
+}
+
+export interface DBBlock {
+  id: string;
+  drawing_id: string;
+  name: string;
+  description: string | null;
+  category: string;
+  elements_json: string;
+  thumbnail: string | null;
+}
+
+export interface DBSetting {
+  key: string;
+  value: string;
+  updated_at: string;
+}
+
+export interface DBUser {
+  id: string;
+  email: string;
+  password_hash: string;
+  name: string;
+  role: string;
+  created_at: string;
+  updated_at: string;
+}
+
+export interface DBSession {
+  token: string;
+  user_id: string;
+  expires_at: number;
+  created_at: string;
+}
+
+export interface DatabaseInterface {
+  init(): Promise<void>;
+  close(): void;
+
+  // Users
+  getUser(id: string): DBUser | null;
+  getUserByEmail(email: string): DBUser | null;
+  createUser(data: Partial<DBUser>): DBUser;
+  updateUser(id: string, data: Partial<DBUser>): DBUser | null;
+  deleteUser(id: string): boolean;
+  listUsers(): DBUser[];
+
+  // Projects
+  listProjects(): DBProject[];
+  getProject(id: string): DBProject | null;
+  createProject(data: Partial<DBProject>): DBProject;
+  updateProject(id: string, data: Partial<DBProject>): DBProject | null;
+  deleteProject(id: string): boolean;
+
+  // Drawings
+  listDrawings(projectId: string): DBDrawing[];
+  getDrawing(id: string): DBDrawing | null;
+  createDrawing(data: Partial<DBDrawing>): DBDrawing;
+  updateDrawing(id: string, data: Partial<DBDrawing>): DBDrawing | null;
+  deleteDrawing(id: string): boolean;
+
+  // Layers
+  listLayers(drawingId: string): DBLayer[];
+  createLayer(data: Partial<DBLayer>): DBLayer;
+  updateLayer(id: string, data: Partial<DBLayer>): DBLayer | null;
+  deleteLayer(id: string): boolean;
+
+  // Elements
+  listElements(drawingId: string): DBElement[];
+  createElement(data: Partial<DBElement>): DBElement;
+  updateElement(id: string, data: Partial<DBElement>): DBElement | null;
+  deleteElement(id: string): boolean;
+
+  // Blocks
+  listBlocks(drawingId: string): DBBlock[];
+  createBlock(data: Partial<DBBlock>): DBBlock;
+  updateBlock(id: string, data: Partial<DBBlock>): DBBlock | null;
+  deleteBlock(id: string): boolean;
+
+  // Settings
+  getSetting(key: string): DBSetting | null;
+  setSetting(key: string, value: string): void;
+
+  // Sessions
+  createSession(data: Partial<DBSession>): DBSession;
+  getSession(token: string): DBSession | null;
+  deleteSession(token: string): boolean;
+  deleteExpiredSessions(): void;
+}
diff --git a/backend/src/database/SqliteAdapter.ts b/backend/src/database/SqliteAdapter.ts
new file mode 100644
index 0000000..79777f3
--- /dev/null
+++ b/backend/src/database/SqliteAdapter.ts
@@ -0,0 +1,268 @@
+/**
+ * SQLite Adapter – implements DatabaseInterface with better-sqlite3
+ */
+import Database from 'better-sqlite3';
+import { readFileSync } from 'fs';
+import { join, dirname } from 'path';
+import { fileURLToPath } from 'url';
+import { randomUUID } from 'crypto';
+import type {
+  DatabaseInterface, DBProject, DBDrawing, DBLayer,
+  DBElement, DBBlock, DBSetting, DBUser, DBSession,
+} from './DatabaseInterface.js';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+
+export class SqliteAdapter implements DatabaseInterface {
+  private db: Database.Database;
+
+  constructor(dbPath: string = ':memory:') {
+    this.db = new Database(dbPath);
+    this.db.pragma('journal_mode = WAL');
+    this.db.pragma('foreign_keys = ON');
+  }
+
+  async init(): Promise<void> {
+    const schemaPath = join(__dirname, 'schema.sql');
+    const schema = readFileSync(schemaPath, 'utf-8');
+    this.db.exec(schema);
+  }
+
+  close(): void {
+    this.db.close();
+  }
+
+  // ─── Users ──────────────────────────────────────────
+  getUser(id: string): DBUser | null {
+    return (this.db.prepare('SELECT * FROM users WHERE id = ?').get(id) as DBUser) ?? null;
+  }
+
+  getUserByEmail(email: string): DBUser | null {
+    return (this.db.prepare('SELECT * FROM users WHERE email = ?').get(email) as DBUser) ?? null;
+  }
+
+  createUser(data: Partial<DBUser>): DBUser {
+    const id = data.id ?? `user-${Date.now()}`;
+    this.db.prepare(
+      'INSERT INTO users (id, email, password_hash, name, role) VALUES (?, ?, ?, ?, ?)',
+    ).run(id, data.email!, data.password_hash!, data.name!, data.role ?? 'planer');
+    return this.getUser(id)!;
+  }
+
+  updateUser(id: string, data: Partial<DBUser>): DBUser | null {
+    const sets: string[] = [];
+    const vals: any[] = [];
+    if (data.email !== undefined) { sets.push('email = ?'); vals.push(data.email); }
+    if (data.password_hash !== undefined) { sets.push('password_hash = ?'); vals.push(data.password_hash); }
+    if (data.name !== undefined) { sets.push('name = ?'); vals.push(data.name); }
+    if (data.role !== undefined) { sets.push('role = ?'); vals.push(data.role); }
+    sets.push("updated_at = datetime('now')");
+    if (sets.length > 1) {
+      this.db.prepare(`UPDATE users SET ${sets.join(', ')} WHERE id = ?`).run(...vals, id);
+    }
+    return this.getUser(id);
+  }
+
+  deleteUser(id: string): boolean {
+    return this.db.prepare('DELETE FROM users WHERE id = ?').run(id).changes > 0;
+  }
+
+  listUsers(): DBUser[] {
+    return this.db.prepare('SELECT * FROM users ORDER BY created_at DESC').all() as DBUser[];
+  }
+
+  // ─── Projects ──────────────────────────────────────
+  listProjects(): DBProject[] {
+    return this.db.prepare('SELECT * FROM projects ORDER BY updated_at DESC').all() as DBProject[];
+  }
+
+  getProject(id: string): DBProject | null {
+    return (this.db.prepare('SELECT * FROM projects WHERE id = ?').get(id) as DBProject) ?? null;
+  }
+
+  createProject(data: Partial<DBProject>): DBProject {
+    const id = data.id ?? `proj-${Date.now()}`;
+    this.db.prepare(
+      'INSERT INTO projects (id, name, description, owner_id) VALUES (?, ?, ?, ?)',
+    ).run(id, data.name ?? 'Unbenannt', data.description ?? null, data.owner_id ?? 'user-default');
+    return this.getProject(id)!;
+  }
+
+  updateProject(id: string, data: Partial<DBProject>): DBProject | null {
+ const sets: string[] = [];
+    const vals: any[] = [];
+    if (data.name !== undefined) { sets.push('name = ?'); vals.push(data.name); }
+    if (data.description !== undefined) { sets.push('description = ?'); vals.push(data.description); }
+    sets.push("updated_at = datetime('now')");
+    if (sets.length > 1) {
+      this.db.prepare(`UPDATE projects SET ${sets.join(', ')} WHERE id = ?`).run(...vals, id);
+    }
+    return this.getProject(id);
+  }
+
+  deleteProject(id: string): boolean {
+    return this.db.prepare('DELETE FROM projects WHERE id = ?').run(id).changes > 0;
+  }
+
+  // ─── Drawings ──────────────────────────────────────
+  listDrawings(projectId: string): DBDrawing[] {
+    return this.db.prepare('SELECT * FROM drawings WHERE project_id = ? ORDER BY updated_at DESC').all(projectId) as DBDrawing[];
+  }
+
+  getDrawing(id: string): DBDrawing | null {
+    return (this.db.prepare('SELECT * FROM drawings WHERE id = ?').get(id) as DBDrawing) ?? null;
+  }
+
+  createDrawing(data: Partial<DBDrawing>): DBDrawing {
+    const id = data.id ?? `draw-${Date.now()}`;
+    this.db.prepare(
+      'INSERT INTO drawings (id, project_id, name, data_json) VALUES (?, ?, ?, ?)',
+    ).run(id, data.project_id!, data.name ?? 'Unbenannt', data.data_json ?? '{}');
+    return this.getDrawing(id)!;
+  }
+
+  updateDrawing(id: string, data: Partial<DBDrawing>): DBDrawing | null {
+    const sets: string[] = [];
+    const vals: any[] = [];
+    if (data.name !== undefined) { sets.push('name = ?'); vals.push(data.name); }
+    if (data.data_json !== undefined) { sets.push('data_json = ?'); vals.push(data.data_json); }
+    sets.push("updated_at = datetime('now')");
+    if (sets.length > 1) {
+      this.db.prepare(`UPDATE drawings SET ${sets.join(', ')} WHERE id = ?`).run(...vals, id);
+    }
+    return this.getDrawing(id);
+  }
+
+  deleteDrawing(id: string): boolean {
+    return this.db.prepare('DELETE FROM drawings WHERE id = ?').run(id).changes > 0;
+  }
+
+  // ─── Layers ────────────────────────────────────────
+  listLayers(drawingId: string): DBLayer[] {
+    return this.db.prepare('SELECT * FROM layers WHERE drawing_id = ? ORDER BY sort_order').all(drawingId) as DBLayer[];
+  }
+
+  createLayer(data: Partial<DBLayer>): DBLayer {
+    const id = data.id ?? `layer-${Date.now()}`;
+    this.db.prepare(
+      'INSERT INTO layers (id, drawing_id, name, visible, locked, color, line_type, transparency, sort_order, parent_id) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?)',
+    ).run(id, data.drawing_id!, data.name ?? 'Layer', data.visible ?? 1, data.locked ?? 0,
+      data.color ?? '#ffffff', data.line_type ?? 'solid', data.transparency ?? 0,
+      data.sort_order ?? 0, data.parent_id ?? null);
+    return this.db.prepare('SELECT * FROM layers WHERE id = ?').get(id) as DBLayer;
+  }
+
+  updateLayer(id: string, data: Partial<DBLayer>): DBLayer | null {
+    const sets: string[] = [];
+    const vals: any[] = [];
+    for (const [k, v] of Object.entries(data)) {
+      if (['name','visible','locked','color','line_type','transparency','sort_order','parent_id'].includes(k)) {
+        sets.push(`${k} = ?`); vals.push(v);
+      }
+    }
+    if (sets.length > 0) {
+      this.db.prepare(`UPDATE layers SET ${sets.join(', ')} WHERE id = ?`).run(...vals, id);
+    }
+    return this.db.prepare('SELECT * FROM layers WHERE id = ?').get(id) as DBLayer ?? null;
+  }
+
+  deleteLayer(id: string): boolean {
+    return this.db.prepare('DELETE FROM layers WHERE id = ?').run(id).changes > 0;
+  }
+
+  // ─── Elements ──────────────────────────────────────
+  listElements(drawingId: string): DBElement[] {
+    return this.db.prepare('SELECT * FROM elements WHERE drawing_id = ?').all(drawingId) as DBElement[];
+  }
+
+  createElement(data: Partial<DBElement>): DBElement {
+    const id = data.id ?? `elem-${Date.now()}`;
+    this.db.prepare(
+      'INSERT INTO elements (id, drawing_id, layer_id, type, x, y, width, height, properties_json) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)',
+    ).run(id, data.drawing_id!, data.layer_id!, data.type!, data.x ?? 0, data.y ?? 0,
+      data.width ?? 0, data.height ?? 0, data.properties_json ?? '{}');
+    return this.db.prepare('SELECT * FROM elements WHERE id = ?').get(id) as DBElement;
+  }
+
+  updateElement(id: string, data: Partial<DBElement>): DBElement | null {
+    const sets: string[] = [];
+    const vals: any[] = [];
+    for (const [k, v] of Object.entries(data)) {
+      if (['layer_id','type','x','y','width','height','properties_json'].includes(k)) {
+        sets.push(`${k} = ?`); vals.push(v);
+      }
+    }
+    if (sets.length > 0) {
+      this.db.prepare(`UPDATE elements SET ${sets.join(', ')} WHERE id = ?`).run(...vals, id);
+    }
+    return this.db.prepare('SELECT * FROM elements WHERE id = ?').get(id) as DBElement ?? null;
+  }
+
+  deleteElement(id: string): boolean {
+    return this.db.prepare('DELETE FROM elements WHERE id = ?').run(id).changes > 0;
+  }
+
+  // ─── Blocks ────────────────────────────────────────
+  listBlocks(drawingId: string): DBBlock[] {
+    return this.db.prepare('SELECT * FROM blocks WHERE drawing_id = ?').all(drawingId) as DBBlock[];
+  }
+
+  createBlock(data: Partial<DBBlock>): DBBlock {
+    const id = data.id ?? `block-${Date.now()}`;
+    this.db.prepare(
+      'INSERT INTO blocks (id, drawing_id, name, description, category, elements_json, thumbnail) VALUES (?, ?, ?, ?, ?, ?, ?)',
+    ).run(id, data.drawing_id!, data.name ?? 'Block', data.description ?? null,
+      data.category ?? 'Allgemein', data.elements_json ?? '[]', data.thumbnail ?? null);
+    return this.db.prepare('SELECT * FROM blocks WHERE id = ?').get(id) as DBBlock;
+  }
+
+  updateBlock(id: string, data: Partial<DBBlock>): DBBlock | null {
+    const sets: string[] = [];
+    const vals: any[] = [];
+    for (const [k, v] of Object.entries(data)) {
+      if (['name','description','category','elements_json','thumbnail'].includes(k)) {
+        sets.push(`${k} = ?`); vals.push(v);
+      }
+    }
+    if (sets.length > 0) {
+      this.db.prepare(`UPDATE blocks SET ${sets.join(', ')} WHERE id = ?`).run(...vals, id);
+    }
+    return this.db.prepare('SELECT * FROM blocks WHERE id = ?').get(id) as DBBlock ?? null;
+  }
+
+  deleteBlock(id: string): boolean {
+    return this.db.prepare('DELETE FROM blocks WHERE id = ?').run(id).changes > 0;
+  }
+
+  // ─── Settings ──────────────────────────────────────
+  getSetting(key: string): DBSetting | null {
+    return (this.db.prepare('SELECT * FROM settings WHERE key = ?').get(key) as DBSetting) ?? null;
+  }
+
+  setSetting(key: string, value: string): void {
+    this.db.prepare(
+      "INSERT INTO settings (key, value, updated_at) VALUES (?, ?, datetime('now')) ON CONFLICT(key) DO UPDATE SET value = excluded.value, updated_at = datetime('now')",
+    ).run(key, value);
+  }
+
+  // ─── Sessions ───────────────────────────────────────
+  createSession(data: Partial<DBSession>): DBSession {
+    const token = data.token ?? randomUUID();
+    this.db.prepare(
+      'INSERT INTO sessions (token, user_id, expires_at) VALUES (?, ?, ?)',
+    ).run(token, data.user_id!, data.expires_at!);
+    return this.getSession(token)!;
+  }
+
+  getSession(token: string): DBSession | null {
+    return (this.db.prepare('SELECT * FROM sessions WHERE token = ?').get(token) as DBSession) ?? null;
+  }
+
+  deleteSession(token: string): boolean {
+    return this.db.prepare('DELETE FROM sessions WHERE token = ?').run(token).changes > 0;
+  }
+
+  deleteExpiredSessions(): void {
+    this.db.prepare('DELETE FROM sessions WHERE expires_at < ?').run(Date.now());
+  }
+}
diff --git a/backend/src/database/schema.sql b/backend/src/database/schema.sql
new file mode 100644
index 0000000..0fb66e7
--- /dev/null
+++ b/backend/src/database/schema.sql
@@ -0,0 +1,107 @@
+-- Web CAD Backend – SQLite Schema
+-- Version 1.0
+
+PRAGMA journal_mode = WAL;
+PRAGMA foreign_keys = ON;
+
+-- ─── Users ──────────────────────────────────────────
+CREATE TABLE IF NOT EXISTS users (
+  id TEXT PRIMARY KEY,
+  email TEXT UNIQUE NOT NULL,
+  password_hash TEXT NOT NULL,
+  name TEXT NOT NULL,
+  role TEXT NOT NULL DEFAULT 'planer' CHECK(role IN ('admin','planer','betrachter','gast')),
+  created_at TEXT NOT NULL DEFAULT (datetime('now')),
+  updated_at TEXT NOT NULL DEFAULT (datetime('now'))
+);
+
+-- ─── Default User (seed) ────────────────────────────
+INSERT OR IGNORE INTO users (id, email, password_hash, name, role) VALUES ('user-default', 'default@webcad.local', '', 'Default User', 'admin');
+
+-- ─── Projects ───────────────────────────────────────
+CREATE TABLE IF NOT EXISTS projects (
+  id TEXT PRIMARY KEY,
+  name TEXT NOT NULL,
+  description TEXT,
+  owner_id TEXT NOT NULL,
+  created_at TEXT NOT NULL DEFAULT (datetime('now')),
+  updated_at TEXT NOT NULL DEFAULT (datetime('now')),
+  FOREIGN KEY (owner_id) REFERENCES users(id) ON DELETE CASCADE
+);
+
+-- ─── Drawings ───────────────────────────────────────
+CREATE TABLE IF NOT EXISTS drawings (
+  id TEXT PRIMARY KEY,
+  project_id TEXT NOT NULL,
+  name TEXT NOT NULL,
+  data_json TEXT NOT NULL DEFAULT '{}',
+  created_at TEXT NOT NULL DEFAULT (datetime('now')),
+  updated_at TEXT NOT NULL DEFAULT (datetime('now')),
+  FOREIGN KEY (project_id) REFERENCES projects(id) ON DELETE CASCADE
+);
+
+-- ─── Layers ─────────────────────────────────────────
+CREATE TABLE IF NOT EXISTS layers (
+  id TEXT PRIMARY KEY,
+  drawing_id TEXT NOT NULL,
+  name TEXT NOT NULL,
+  visible INTEGER NOT NULL DEFAULT 1,
+  locked INTEGER NOT NULL DEFAULT 0,
+  color TEXT NOT NULL DEFAULT '#ffffff',
+  line_type TEXT NOT NULL DEFAULT 'solid',
+  transparency REAL NOT NULL DEFAULT 0,
+  sort_order INTEGER NOT NULL DEFAULT 0,
+  parent_id TEXT,
+  FOREIGN KEY (drawing_id) REFERENCES drawings(id) ON DELETE CASCADE
+);
+
+-- ─── Elements ───────────────────────────────────────
+CREATE TABLE IF NOT EXISTS elements (
+  id TEXT PRIMARY KEY,
+  drawing_id TEXT NOT NULL,
+  layer_id TEXT NOT NULL,
+  type TEXT NOT NULL,
+  x REAL NOT NULL,
+  y REAL NOT NULL,
+  width REAL NOT NULL,
+  height REAL NOT NULL,
+  properties_json TEXT NOT NULL DEFAULT '{}',
+  created_at TEXT NOT NULL DEFAULT (datetime('now')),
+  FOREIGN KEY (drawing_id) REFERENCES drawings(id) ON DELETE CASCADE,
+  FOREIGN KEY (layer_id) REFERENCES layers(id) ON DELETE CASCADE
+);
+
+-- ─── Block Definitions ──────────────────────────────
+CREATE TABLE IF NOT EXISTS blocks (
+  id TEXT PRIMARY KEY,
+  drawing_id TEXT NOT NULL,
+  name TEXT NOT NULL,
+  description TEXT,
+  category TEXT NOT NULL DEFAULT 'Allgemein',
+  elements_json TEXT NOT NULL DEFAULT '[]',
+  thumbnail TEXT,
+  FOREIGN KEY (drawing_id) REFERENCES drawings(id) ON DELETE CASCADE
+);
+
+-- ─── Sessions ──────────────────────────────────────
+CREATE TABLE IF NOT EXISTS sessions (
+  token TEXT PRIMARY KEY,
+  user_id TEXT NOT NULL,
+  expires_at INTEGER NOT NULL,
+  created_at TEXT NOT NULL DEFAULT (datetime('now')),
+  FOREIGN KEY (user_id) REFERENCES users(id) ON DELETE CASCADE
+);
+
+-- ─── Settings ───────────────────────────────────────
+CREATE TABLE IF NOT EXISTS settings (
+  key TEXT PRIMARY KEY,
+  value TEXT NOT NULL,
+  updated_at TEXT NOT NULL DEFAULT (datetime('now'))
+);
+
+-- ─── Indexes ────────────────────────────────────────
+CREATE INDEX IF NOT EXISTS idx_drawings_project ON drawings(project_id);
+CREATE INDEX IF NOT EXISTS idx_layers_drawing ON layers(drawing_id);
+CREATE INDEX IF NOT EXISTS idx_elements_drawing ON elements(drawing_id);
+CREATE INDEX IF NOT EXISTS idx_elements_layer ON elements(layer_id);
+CREATE INDEX IF NOT EXISTS idx_blocks_drawing ON blocks(drawing_id);
diff --git a/backend/src/index.ts b/backend/src/index.ts
new file mode 100644
index 0000000..8c182b5
--- /dev/null
+++ b/backend/src/index.ts
@@ -0,0 +1,40 @@
+/**
+ * Web CAD Backend – Entry Point
+ */
+import { createServer } from './server.js';
+import { SqliteAdapter } from './database/SqliteAdapter.js';
+import { initYjsPersistence, closeYjsPersistence } from './websocket/yjsServer.js';
+
+const PORT = parseInt(process.env.PORT || '3001', 10);
+const HOST = process.env.HOST || '0.0.0.0';
+const DB_PATH = process.env.DB_PATH || '/data/web-cad.db';
+
+async function main() {
+  const db = new SqliteAdapter(DB_PATH);
+  await db.init();
+  await initYjsPersistence();
+
+  const fastify = await createServer({ port: PORT, host: HOST, db });
+
+  try {
+    await fastify.listen({ port: PORT, host: HOST });
+    console.log(`Web CAD Backend running on http://${HOST}:${PORT}`);
+  } catch (err) {
+    fastify.log.error(err);
+    process.exit(1);
+  }
+
+  // Graceful shutdown
+  process.on('SIGTERM', async () => {
+    await fastify.close();
+    db.close();
+    process.exit(0);
+  });
+  process.on('SIGINT', async () => {
+    await fastify.close();
+    db.close();
+    process.exit(0);
+  });
+}
+
+main();
diff --git a/backend/src/routes/ai.ts b/backend/src/routes/ai.ts
new file mode 100644
index 0000000..ed213a2
--- /dev/null
+++ b/backend/src/routes/ai.ts
@@ -0,0 +1,132 @@
+/**
+ * AI Routes – KI Copilot chat endpoint via OpenRouter
+ */
+import type { FastifyInstance } from 'fastify';
+import type { AuthService } from '../auth/AuthService.js';
+
+const OPENROUTER_URL = 'https://openrouter.ai/api/v1/chat/completions';
+const MODEL = 'anthropic/claude-sonnet-4.5';
+const TIMEOUT_MS = 30_000;
+
+function extractToken(request: any): string | null {
+  const auth = request.headers?.authorization;
+  if (auth && auth.startsWith('Bearer ')) {
+    return auth.slice(7);
+  }
+  return null;
+}
+
+export function registerAIRoutes(fastify: FastifyInstance, authService: AuthService) {
+  fastify.post('/api/ai/chat', async (request, reply) => {
+    // Auth check
+    const token = extractToken(request);
+    if (!token) {
+      return reply.code(401).send({ error: 'Authentication required' });
+    }
+    const user = authService.getUserFromSession(token);
+    if (!user) {
+      return reply.code(401).send({ error: 'Invalid or expired session' });
+    }
+
+    const { messages, context } = request.body as {
+      messages?: Array<{ role: string; content: string }>;
+      context?: {
+        projectName?: string;
+        elementCount?: number;
+        layerCount?: number;
+        elementTypeSummary?: Record<string, number>;
+      };
+    };
+
+    if (!messages || !Array.isArray(messages) || messages.length === 0) {
+      return reply.code(400).send({ error: 'Messages array is required' });
+    }
+
+    const apiKey = process.env.API_KEY_OPENROUTER;
+    if (!apiKey) {
+      return reply.code(503).send({ error: 'AI service not configured' });
+    }
+
+    // Build system prompt with CAD context
+    const ctxParts: string[] = [
+      'Du bist der KI Copilot für Web CAD, eine webbasierte CAD-Anwendung für Event- und Raumplanung.',
+      'Du hilfst beim Anlegen von Bestuhlung, Räumen, Bühnen und anderen CAD-Elementen.',
+      'Antworte auf Deutsch, klar und präzise. Verwende Markdown für Formatierung wenn sinnvoll.',
+    ];
+
+    if (context) {
+      if (context.projectName) ctxParts.push(`Aktuelles Projekt: ${context.projectName}`);
+      if (context.elementCount !== undefined) ctxParts.push(`Elemente im Projekt: ${context.elementCount}`);
+      if (context.layerCount !== undefined) ctxParts.push(`Ebenen: ${context.layerCount}`);
+      if (context.elementTypeSummary) {
+        const summary = Object.entries(context.elementTypeSummary)
+          .map(([type, count]) => `${type}: ${count}`)
+          .join(', ');
+        ctxParts.push(`Element-Typen: ${summary}`);
+      }
+    }
+
+    const systemPrompt = ctxParts.join('\n');
+
+    // Build OpenRouter request
+    const payload = {
+      model: MODEL,
+      messages: [
+        { role: 'system', content: systemPrompt },
+        ...messages.map((m) => ({ role: m.role, content: m.content })),
+      ],
+      max_tokens: 1024,
+      temperature: 0.7,
+    };
+
+    try {
+      const controller = new AbortController();
+      const timeout = setTimeout(() => controller.abort(), TIMEOUT_MS);
+
+      const response = await fetch(OPENROUTER_URL, {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+          'Authorization': `Bearer ${apiKey}`,
+          'HTTP-Referer': 'http://localhost:5173',
+          'X-Title': 'Web CAD KI Copilot',
+        },
+        body: JSON.stringify(payload),
+        signal: controller.signal,
+      });
+
+      clearTimeout(timeout);
+
+      if (!response.ok) {
+        const errText = await response.text();
+        request.log.error({ errText, status: response.status }, 'OpenRouter error');
+        return reply.code(502).send({ error: 'AI service returned an error' });
+      }
+
+      const data = await response.json() as any;
+      const content = data.choices?.[0]?.message?.content ?? '';
+
+      if (!content) {
+        return reply.code(502).send({ error: 'AI service returned empty response' });
+      }
+
+      // Extract suggestions from response if present (simple heuristic)
+      const suggestions: string[] = [];
+      const lines = content.split('\n');
+      for (const line of lines) {
+        const match = line.match(/^[-*]\s*(.+)/);
+        if (match && suggestions.length < 3) {
+          suggestions.push(match[1].trim());
+        }
+      }
+
+      return reply.send({ content, suggestions: suggestions.length > 0 ? suggestions : undefined });
+    } catch (err: any) {
+      if (err.name === 'AbortError') {
+        return reply.code(504).send({ error: 'AI service timeout' });
+      }
+      request.log.error({ err }, 'AI route error');
+      return reply.code(500).send({ error: 'Internal server error' });
+    }
+  });
+}
diff --git a/backend/src/routes/auth.ts b/backend/src/routes/auth.ts
new file mode 100644
index 0000000..325540a
--- /dev/null
+++ b/backend/src/routes/auth.ts
@@ -0,0 +1,82 @@
+/**
+ * Auth Routes – Registration, Login, Logout, Profile
+ */
+import type { FastifyInstance } from 'fastify';
+import type { AuthService } from '../auth/AuthService.js';
+
+export function registerAuthRoutes(fastify: FastifyInstance, authService: AuthService) {
+  // Register new user
+  fastify.post('/api/auth/register', async (request, reply) => {
+    const { email, password, name, role } = request.body as {
+      email?: string; password?: string; name?: string; role?: string;
+    };
+    if (!email || !password || !name) {
+      return reply.code(400).send({ error: 'Email, password and name are required' });
+    }
+    try {
+      const result = await authService.register(email, password, name, role);
+      return reply.code(201).send(result);
+    } catch (err: any) {     return reply.code(409).send({ error: err.message });
+    }
+  });
+
+  // Login
+  fastify.post('/api/auth/login', async (request, reply) => {
+    const { email, password } = request.body as { email?: string; password?: string };
+    if (!email || !password) {
+      return reply.code(400).send({ error: 'Email and password are required' });
+    }
+    try {
+      const result = await authService.login(email, password);
+      return reply.send(result);
+    } catch {
+      return reply.code(401).send({ error: 'Invalid credentials' });
+    }
+  });
+
+  // Logout
+  fastify.post('/api/auth/logout', async (request, reply) => {
+    const token = extractToken(request);
+    if (token) {
+      authService.destroySession(token);
+    }
+    return reply.code(204).send();
+  });
+
+  // Get current user profile
+  fastify.get('/api/auth/me', async (request, reply) => {
+    const token = extractToken(request);
+    if (!token) return reply.code(401).send({ error: 'Not authenticated' });
+    const user = authService.getUserFromSession(token);
+    if (!user) return reply.code(401).send({ error: 'Invalid or expired session' });
+    const { password_hash, ...safe } = user;
+    return safe;
+  });
+
+  // Change password
+  fastify.patch('/api/auth/password', async (request, reply) => {
+    const token = extractToken(request);
+    if (!token) return reply.code(401).send({ error: 'Not authenticated' });
+    const user = authService.getUserFromSession(token);
+    if (!user) return reply.code(401).send({ error: 'Invalid or expired session' });
+
+    const { oldPassword, newPassword } = request.body as { oldPassword?: string; newPassword?: string };
+    if (!oldPassword || !newPassword) {
+      return reply.code(400).send({ error: 'oldPassword and newPassword are required' });
+    }
+    try {
+      await authService.changePassword(user.id, oldPassword, newPassword);
+      return reply.code(204).send();
+    } catch (err: any) {
+      return reply.code(400).send({ error: err.message });
+    }
+  });
+}
+
+function extractToken(request: any): string | null {
+  const auth = request.headers?.authorization;
+  if (auth && auth.startsWith('Bearer ')) {
+    return auth.slice(7);
+  }
+  return null;
+}
diff --git a/backend/src/routes/blocks.ts b/backend/src/routes/blocks.ts
new file mode 100644
index 0000000..8286da6
--- /dev/null
+++ b/backend/src/routes/blocks.ts
@@ -0,0 +1,38 @@
+/**
+ * Blocks Routes – CRUD for reusable drawing blocks
+ */
+import type { FastifyInstance } from 'fastify';
+import type { DatabaseInterface, DBBlock } from '../database/DatabaseInterface.js';
+
+export function registerBlockRoutes(fastify: FastifyInstance, db: DatabaseInterface) {
+  // List all blocks for a drawing
+  fastify.get('/api/drawings/:drawingId/blocks', async (request) => {
+    const { drawingId } = request.params as { drawingId: string };
+    return db.listBlocks(drawingId);
+  });
+
+  // Create a new block
+  fastify.post('/api/drawings/:drawingId/blocks', async (request, reply) => {
+    const { drawingId } = request.params as { drawingId: string };
+    const body = request.body as Partial<DBBlock>;
+    if (!body.name) return reply.code(400).send({ error: 'Name is required' });
+    return reply.code(201).send(db.createBlock({ ...body, drawing_id: drawingId }));
+  });
+
+  // Update a block
+  fastify.patch('/api/blocks/:id', async (request, reply) => {
+    const { id } = request.params as { id: string };
+    const body = request.body as Partial<DBBlock>;
+    const updated = db.updateBlock(id, body);
+    if (!updated) return reply.code(404).send({ error: 'Block not found' });
+    return updated;
+  });
+
+  // Delete a block
+  fastify.delete('/api/blocks/:id', async (request, reply) => {
+    const { id } = request.params as { id: string };
+    const ok = db.deleteBlock(id);
+    if (!ok) return reply.code(404).send({ error: 'Block not found' });
+    return reply.code(204).send();
+  });
+}
diff --git a/backend/src/routes/drawings.ts b/backend/src/routes/drawings.ts
new file mode 100644
index 0000000..a1d6070
--- /dev/null
+++ b/backend/src/routes/drawings.ts
@@ -0,0 +1,45 @@
+/**
+ * Drawings Routes – CRUD for drawings
+ */
+import type { FastifyInstance } from 'fastify';
+import type { DatabaseInterface, DBDrawing } from '../database/DatabaseInterface.js';
+
+export function registerDrawingRoutes(fastify: FastifyInstance, db: DatabaseInterface) {
+  // List drawings for a project
+  fastify.get('/api/projects/:projectId/drawings', async (request) => {
+    const { projectId } = request.params as { projectId: string };
+    return db.listDrawings(projectId);
+  });
+
+  // Get single drawing
+  fastify.get('/api/drawings/:id', async (request, reply) => {
+    const { id } = request.params as { id: string };
+    const drawing = db.getDrawing(id);
+    if (!drawing) return reply.code(404).send({ error: 'Drawing not found' });
+    return drawing;
+  });
+
+  // Create drawing
+  fastify.post('/api/projects/:projectId/drawings', async (request, reply) => {
+    const { projectId } = request.params as { projectId: string };
+    const body = request.body as Partial<DBDrawing>;
+    return reply.code(201).send(db.createDrawing({ ...body, project_id: projectId }));
+  });
+
+  // Update drawing
+  fastify.patch('/api/drawings/:id', async (request, reply) => {
+    const { id } = request.params as { id: string };
+    const body = request.body as Partial<DBDrawing>;
+    const updated = db.updateDrawing(id, body);
+    if (!updated) return reply.code(404).send({ error: 'Drawing not found' });
+    return updated;
+  });
+
+  // Delete drawing
+  fastify.delete('/api/drawings/:id', async (request, reply) => {
+    const { id } = request.params as { id: string };
+    const ok = db.deleteDrawing(id);
+    if (!ok) return reply.code(404).send({ error: 'Drawing not found' });
+    return reply.code(204).send();
+  });
+}
diff --git a/backend/src/routes/elements.ts b/backend/src/routes/elements.ts
new file mode 100644
index 0000000..36db59c
--- /dev/null
+++ b/backend/src/routes/elements.ts
@@ -0,0 +1,37 @@
+/**
+ * Elements Routes – CRUD for elements
+ */
+import type { FastifyInstance } from 'fastify';
+import type { DatabaseInterface, DBElement } from '../database/DatabaseInterface.js';
+
+export function registerElementRoutes(fastify: FastifyInstance, db: DatabaseInterface) {
+  // List elements for a drawing
+  fastify.get('/api/drawings/:drawingId/elements', async (request) => {
+    const { drawingId } = request.params as { drawingId: string };
+    return db.listElements(drawingId);
+  });
+
+  // Create element
+  fastify.post('/api/drawings/:drawingId/elements', async (request, reply) => {
+    const { drawingId } = request.params as { drawingId: string };
+    const body = request.body as Partial<DBElement>;
+    return reply.code(201).send(db.createElement({ ...body, drawing_id: drawingId }));
+  });
+
+  // Update element
+  fastify.patch('/api/elements/:id', async (request, reply) => {
+    const { id } = request.params as { id: string };
+    const body = request.body as Partial<DBElement>;
+    const updated = db.updateElement(id, body);
+    if (!updated) return reply.code(404).send({ error: 'Element not found' });
+    return updated;
+  });
+
+  // Delete element
+  fastify.delete('/api/elements/:id', async (request, reply) => {
+    const { id } = request.params as { id: string };
+    const ok = db.deleteElement(id);
+    if (!ok) return reply.code(404).send({ error: 'Element not found' });
+    return reply.code(204).send();
+  });
+}
diff --git a/backend/src/routes/layers.ts b/backend/src/routes/layers.ts
new file mode 100644
index 0000000..aa4a929
--- /dev/null
+++ b/backend/src/routes/layers.ts
@@ -0,0 +1,37 @@
+/**
+ * Layers Routes – CRUD for layers
+ */
+import type { FastifyInstance } from 'fastify';
+import type { DatabaseInterface, DBLayer } from '../database/DatabaseInterface.js';
+
+export function registerLayerRoutes(fastify: FastifyInstance, db: DatabaseInterface) {
+  // List layers for a drawing
+  fastify.get('/api/drawings/:drawingId/layers', async (request) => {
+    const { drawingId } = request.params as { drawingId: string };
+    return db.listLayers(drawingId);
+  });
+
+  // Create layer
+  fastify.post('/api/drawings/:drawingId/layers', async (request, reply) => {
+    const { drawingId } = request.params as { drawingId: string };
+    const body = request.body as Partial<DBLayer>;
+    return reply.code(201).send(db.createLayer({ ...body, drawing_id: drawingId }));
+  });
+
+  // Update layer
+  fastify.patch('/api/layers/:id', async (request, reply) => {
+    const { id } = request.params as { id: string };
+    const body = request.body as Partial<DBLayer>;
+    const updated = db.updateLayer(id, body);
+    if (!updated) return reply.code(404).send({ error: 'Layer not found' });
+    return updated;
+  });
+
+  // Delete layer
+  fastify.delete('/api/layers/:id', async (request, reply) => {
+    const { id } = request.params as { id: string };
+    const ok = db.deleteLayer(id);
+    if (!ok) return reply.code(404).send({ error: 'Layer not found' });
+    return reply.code(204).send();
+  });
+}
diff --git a/backend/src/routes/projects.ts b/backend/src/routes/projects.ts
new file mode 100644
index 0000000..ef5e7af
--- /dev/null
+++ b/backend/src/routes/projects.ts
@@ -0,0 +1,44 @@
+/**
+ * Projects Routes – CRUD for projects
+ */
+import type { FastifyInstance } from 'fastify';
+import type { DatabaseInterface, DBProject } from '../database/DatabaseInterface.js';
+
+export function registerProjectRoutes(fastify: FastifyInstance, db: DatabaseInterface) {
+  // List all projects
+  fastify.get('/api/projects', async () => {
+    return db.listProjects();
+  });
+
+  // Get single project
+  fastify.get('/api/projects/:id', async (request, reply) => {
+    const { id } = request.params as { id: string };
+    const project = db.getProject(id);
+    if (!project) return reply.code(404).send({ error: 'Project not found' });
+    return project;
+  });
+
+  // Create project
+  fastify.post('/api/projects', async (request, reply) => {
+    const body = request.body as Partial<DBProject>;
+    if (!body.name) return reply.code(400).send({ error: 'Name is required' });
+    return reply.code(201).send(db.createProject(body));
+  });
+
+  // Update project
+  fastify.patch('/api/projects/:id', async (request, reply) => {
+    const { id } = request.params as { id: string };
+    const body = request.body as Partial<DBProject>;
+    const updated = db.updateProject(id, body);
+    if (!updated) return reply.code(404).send({ error: 'Project not found' });
+    return updated;
+  });
+
+  // Delete project
+  fastify.delete('/api/projects/:id', async (request, reply) => {
+    const { id } = request.params as { id: string };
+    const ok = db.deleteProject(id);
+    if (!ok) return reply.code(404).send({ error: 'Project not found' });
+    return reply.code(204).send();
+  });
+}
diff --git a/backend/src/routes/settings.ts b/backend/src/routes/settings.ts
new file mode 100644
index 0000000..b36507d
--- /dev/null
+++ b/backend/src/routes/settings.ts
@@ -0,0 +1,26 @@
+/**
+ * Settings Routes – key/value application settings
+ */
+import type { FastifyInstance } from 'fastify';
+import type { DatabaseInterface } from '../database/DatabaseInterface.js';
+
+export function registerSettingsRoutes(fastify: FastifyInstance, db: DatabaseInterface) {
+  // Get a single setting by key
+  fastify.get('/api/settings/:key', async (request, reply) => {
+    const { key } = request.params as { key: string };
+    const setting = db.getSetting(key);
+    if (!setting) return reply.code(404).send({ error: 'Setting not found' });
+    return setting;
+  });
+
+  // Create or update a setting (upsert)
+  fastify.put('/api/settings/:key', async (request) => {
+    const { key } = request.params as { key: string };
+    const body = request.body as { value?: string };
+    if (body.value === undefined) {
+      return { error: 'Value is required' };
+    }
+    db.setSetting(key, body.value);
+    return { key, value: body.value, updated_at: new Date().toISOString() };
+  });
+}
diff --git a/backend/src/routes/users.ts b/backend/src/routes/users.ts
new file mode 100644
index 0000000..9d57361
--- /dev/null
+++ b/backend/src/routes/users.ts
@@ -0,0 +1,43 @@
+/**
+ * Users Routes – Admin user management
+ */
+import type { FastifyInstance } from 'fastify';
+import type { DatabaseInterface, DBUser } from '../database/DatabaseInterface.js';
+import type { AuthService } from '../auth/AuthService.js';
+
+export function registerUserRoutes(fastify: FastifyInstance, db: DatabaseInterface, authService: AuthService) {
+  // List all users (admin only — TODO: add role check middleware)
+  fastify.get('/api/users', async () => {
+    const users = db.listUsers();
+    return users.map(({ password_hash, ...safe }) => safe);
+  });
+
+  // Get single user
+  fastify.get('/api/users/:id', async (request, reply) => {
+    const { id } = request.params as { id: string };
+    const user = db.getUser(id);
+    if (!user) return reply.code(404).send({ error: 'User not found' });
+    const { password_hash, ...safe } = user;
+    return safe;
+  });
+
+  // Update user (name, role, email)
+  fastify.patch('/api/users/:id', async (request, reply) => {
+    const { id } = request.params as { id: string };
+    const body = request.body as Partial<DBUser>;
+    // Prevent password update via this endpoint
+    delete body.password_hash;
+    const updated = db.updateUser(id, body);
+    if (!updated) return reply.code(404).send({ error: 'User not found' });
+    const { password_hash, ...safe } = updated;
+    return safe;
+  });
+
+  // Delete user
+  fastify.delete('/api/users/:id', async (request, reply) => {
+    const { id } = request.params as { id: string };
+    const ok = db.deleteUser(id);
+    if (!ok) return reply.code(404).send({ error: 'User not found' });
+    return reply.code(204).send();
+  });
+}
diff --git a/backend/src/server.ts b/backend/src/server.ts
new file mode 100644
index 0000000..750dc64
--- /dev/null
+++ b/backend/src/server.ts
@@ -0,0 +1,77 @@
+/**
+ * Server – Fastify configuration with CORS, static, and WebSocket
+ */
+import Fastify from 'fastify';
+import cors from '@fastify/cors';
+import staticPlugin from '@fastify/static';
+import websocket from '@fastify/websocket';
+import { join, dirname } from 'path';
+import { fileURLToPath } from 'url';
+import type { DatabaseInterface } from './database/DatabaseInterface.js';
+import { AuthService } from './auth/AuthService.js';
+import { registerYjsWebSocket, initYjsPersistence, closeYjsPersistence } from './websocket/yjsServer.js';
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+
+export interface ServerOptions {
+  port?: number;
+  host?: string;
+  db: DatabaseInterface;
+}
+
+export async function createServer(opts: ServerOptions) {
+  const fastify = Fastify({ logger: true });
+
+  // CORS
+  await fastify.register(cors, {
+    origin: true,
+    methods: ['GET', 'POST', 'PUT', 'PATCH', 'DELETE', 'OPTIONS'],
+  });
+
+  // WebSocket
+  await fastify.register(websocket, {
+    options: { maxPayload: 1048576 },
+  });
+
+  // Static files (serve frontend build if exists)
+  const frontendDist = join(__dirname, '..', '..', 'frontend', 'dist');
+  try {
+    await fastify.register(staticPlugin, {
+      root: frontendDist,
+      prefix: '/',
+    });
+  } catch {
+    // Frontend dist may not exist in dev mode
+  }
+
+  // Health check
+  fastify.get('/api/health', async () => ({ status: 'ok', timestamp: new Date().toISOString() }));
+
+  // Register route modules
+  const { registerProjectRoutes } = await import('./routes/projects.js');
+  const { registerDrawingRoutes } = await import('./routes/drawings.js');
+  const { registerLayerRoutes } = await import('./routes/layers.js');
+  const { registerElementRoutes } = await import('./routes/elements.js');
+  const { registerBlockRoutes } = await import('./routes/blocks.js');
+  const { registerSettingsRoutes } = await import('./routes/settings.js');
+  const { registerAuthRoutes } = await import('./routes/auth.js');
+  const { registerUserRoutes } = await import('./routes/users.js');
+  const { registerAIRoutes } = await import('./routes/ai.js');
+
+  const authService = new AuthService(opts.db);
+
+  registerAuthRoutes(fastify, authService);
+  registerProjectRoutes(fastify, opts.db);
+  registerDrawingRoutes(fastify, opts.db);
+  registerLayerRoutes(fastify, opts.db);
+  registerElementRoutes(fastify, opts.db);
+  registerBlockRoutes(fastify, opts.db);
+  registerSettingsRoutes(fastify, opts.db);
+  registerUserRoutes(fastify, opts.db, authService);
+  registerAIRoutes(fastify, authService);
+
+  // Yjs collaboration WebSocket
+  registerYjsWebSocket(fastify);
+
+  return fastify;
+}
diff --git a/backend/src/types/y-leveldb.d.ts b/backend/src/types/y-leveldb.d.ts
new file mode 100644
index 0000000..7408663
--- /dev/null
+++ b/backend/src/types/y-leveldb.d.ts
@@ -0,0 +1,11 @@
+declare module 'y-leveldb' {
+  import type * as Y from 'yjs';
+
+  export class LeveldbPersistence {
+    constructor(dbPath: string, opts?: Record<string, unknown>);
+    getYDoc(name: string): Promise<Y.Doc>;
+    storeUpdate(name: string, update: Uint8Array): Promise<number>;
+    destroy(): Promise<void>;
+    clearDocument(name: string): Promise<void>;
+  }
+}
diff --git a/backend/src/websocket/yjsServer.ts b/backend/src/websocket/yjsServer.ts
new file mode 100644
index 0000000..fb6b522
--- /dev/null
+++ b/backend/src/websocket/yjsServer.ts
@@ -0,0 +1,137 @@
+/**
+ * Yjs WebSocket Server – Real-time collaboration with LevelDB persistence
+ */
+import * as Y from 'yjs';
+import { LeveldbPersistence } from 'y-leveldb';
+import type { FastifyInstance } from 'fastify';
+import type { WebSocket } from '@fastify/websocket';
+
+const PERSISTENCE_DIR = process.env.YJS_PERSISTENCE_DIR || '/tmp/yjs-documents';
+
+// Document store: docName → Y.Doc
+const docs = new Map<string, Y.Doc>();
+// Connection tracking: docName → Set<WebSocket>
+const connections = new Map<string, Set<WebSocket>>();
+let persistence: LeveldbPersistence | null = null;
+let persistenceReady: Promise<void> | null = null;
+
+export async function initYjsPersistence(): Promise<void> {
+  try {
+    persistence = new LeveldbPersistence(PERSISTENCE_DIR);
+    console.log(`Yjs persistence initialized at ${PERSISTENCE_DIR}`);
+  } catch (err) {
+    console.warn('Yjs persistence failed to init (non-fatal):', err);
+  }
+}
+
+export async function closeYjsPersistence(): Promise<void> {
+  if (persistence) {
+    await persistence.destroy();
+    persistence = null;
+  }
+}
+
+async function getOrCreateDoc(docName: string): Promise<Y.Doc> {
+  if (docs.has(docName)) {
+    return docs.get(docName)!;
+  }
+
+  const doc = new Y.Doc();
+  docs.set(docName, doc);
+
+  // Load persisted state if available
+  if (persistence && persistenceReady) {
+    try {
+      await persistenceReady;
+      const persistedYdoc = await persistence.getYDoc(docName);
+      const update = Y.encodeStateAsUpdate(persistedYdoc);
+      if (update.length > 0) {
+        Y.applyUpdate(doc, update);
+      }
+    } catch (err) {
+      console.warn(`Failed to load doc ${docName}:`, err);
+    }
+  }
+
+  // Persist updates to LevelDB
+  doc.on('update', (update: Uint8Array) => {
+    if (persistence) {
+      persistence.storeUpdate(docName, update).catch((err: any) => {
+        console.warn(`Failed to persist update for ${docName}:`, err);
+      });
+    }
+  });
+
+  return doc;
+}
+
+function broadcastUpdate(docName: string, update: Uint8Array, exclude?: WebSocket): void {
+  const conns = connections.get(docName);
+  if (!conns) return;
+
+  for (const ws of conns) {
+    if (ws !== exclude && ws.readyState === 1 /* OPEN */) {
+      try {
+        ws.send(update);
+      } catch {
+        // Connection error — will be cleaned up on close
+      }
+    }
+  }
+}
+
+export function registerYjsWebSocket(fastify: FastifyInstance): void {
+  fastify.get('/ws/collab/:docName', { websocket: true }, async (socket: WebSocket, request: any) => {
+    const docName = request.params.docName as string;
+    if (!docName) {
+      socket.close(4000, 'Missing docName');
+      return;
+    }
+
+    const doc = await getOrCreateDoc(docName);
+
+    // Track connection
+    if (!connections.has(docName)) {
+      connections.set(docName, new Set());
+    }
+    connections.get(docName)!.add(socket);
+
+    // Send current document state to new client
+    const stateUpdate = Y.encodeStateAsUpdate(doc);
+    if (stateUpdate.length > 0 && socket.readyState === 1) {
+      socket.send(stateUpdate);
+    }
+
+    // Listen for updates from this client
+    socket.on('message', (data: Buffer) => {
+      try {
+        const update = new Uint8Array(data);
+        Y.applyUpdate(doc, update);
+        broadcastUpdate(docName, update, socket);
+      } catch (err) {
+        console.warn(`Invalid update from client for ${docName}:`, err);
+      }
+    });
+
+    // Clean up on disconnect
+    socket.on('close', () => {
+      const conns = connections.get(docName);
+      if (conns) {
+        conns.delete(socket);
+        if (conns.size === 0) {
+          connections.delete(docName);
+          // Optionally keep doc in memory for a while
+          // For now, remove it to free memory
+          docs.delete(docName);
+        }
+      }
+    });
+
+    socket.on('error', () => {
+      const conns = connections.get(docName);
+      if (conns) {
+        conns.delete(socket);
+      }
+    });
+  });
+}
diff --git a/backend/tests/AuthService.test.ts b/backend/tests/AuthService.test.ts
new file mode 100644
index 0000000..d70b19f
--- /dev/null
+++ b/backend/tests/AuthService.test.ts
@@ -0,0 +1,188 @@
+/**
+ * AuthService Unit Tests – Register / Login / ChangePassword / Session lifecycle
+ */
+import { describe, it, expect, beforeAll, afterAll } from 'vitest';
+import { SqliteAdapter } from '../src/database/SqliteAdapter.js';
+import { AuthService } from '../src/auth/AuthService.js';
+
+describe('AuthService', () => {
+  let db: SqliteAdapter;
+  let auth: AuthService;
+
+  beforeAll(async () => {
+    db = new SqliteAdapter(':memory:');
+    await db.init();
+    auth = new AuthService(db);
+  });
+
+  afterAll(() => {
+    db.close();
+  });
+
+  // ─── Register ───────────────────────────────────────
+
+  describe('register()', () => {
+    it('should register a new user successfully', async () => {
+      const result = await auth.register('register@example.com', 'Password123!', 'Register User', 'planer');
+      expect(result.user).toBeDefined();
+      expect(result.user.email).toBe('register@example.com');
+      expect(result.user.name).toBe('Register User');
+      expect(result.user.password_hash).toBeUndefined();
+      expect(result.session).toBeDefined();
+      expect(result.session.token).toBeDefined();
+      expect(result.session.userId).toBe(result.user.id);
+    });
+
+    it('should throw on duplicate email', async () => {
+      await expect(
+        auth.register('register@example.com', 'AnotherPass!', 'Another User', 'planer'),
+      ).rejects.toThrow('Email already registered');
+    });
+
+    it('should default role to planer when not specified', async () => {
+      const result = await auth.register('default-role@example.com', 'Pass123!', 'Default Role User');
+      expect(result.user.role).toBe('planer');
+    });
+  });
+
+  // ─── Login ─────────────────────────────────────────
+
+  describe('login()', () => {
+    it('should login with correct credentials', async () => {
+      const result = await auth.login('register@example.com', 'Password123!');
+      expect(result.user).toBeDefined();
+      expect(result.user.email).toBe('register@example.com');
+      expect(result.session.token).toBeDefined();
+      expect(result.session.userId).toBe(result.user.id);
+    });
+
+    it('should throw on wrong password', async () => {
+      await expect(
+        auth.login('register@example.com', 'WrongPassword!'),
+      ).rejects.toThrow('Invalid credentials');
+    });
+
+    it('should throw on non-existent email', async () => {
+      await expect(
+        auth.login('nobody@example.com', 'SomePassword!'),
+      ).rejects.toThrow('Invalid credentials');
+    });
+  });
+
+  // ─── Change Password ───────────────────────────────
+
+  describe('changePassword()', () => {
+    it('should change password with correct old password', async () => {
+      const result = await auth.register('changepw@example.com', 'OldPass123!', 'ChangePW User', 'admin');
+      const userId = result.user.id;
+
+      await auth.changePassword(userId, 'OldPass123!', 'NewPass456!');
+      // Should now be able to login with new password
+      const loginResult = await auth.login('changepw@example.com', 'NewPass456!');
+      expect(loginResult.user.id).toBe(userId);
+    });
+
+    it('should throw on wrong old password', async () => {
+      const result = await auth.register('changepw2@example.com', 'OriginalPass!', 'User2', 'planer');
+      await expect(
+        auth.changePassword(result.user.id, 'WrongOldPass!', 'NewPass!'),
+      ).rejects.toThrow('Invalid current password');
+    });
+
+    it('should throw on non-existent user', async () => {
+      await expect(
+        auth.changePassword('non-existent-user-id', 'OldPass!', 'NewPass!'),
+      ).rejects.toThrow('User not found');
+    });
+
+    it('should reject old password after change', async () => {
+      const result = await auth.register('changepw3@example.com', 'Original123!', 'User3', 'planer');
+      await auth.changePassword(result.user.id, 'Original123!', 'Changed456!');
+      await expect(
+        auth.login('changepw3@example.com', 'Original123!'),
+      ).rejects.toThrow('Invalid credentials');
+    });
+  });
+
+  // ─── Session Management ────────────────────────────
+
+  describe('Session lifecycle', () => {
+    it('should create and validate a session', async () => {
+      const regResult = await auth.register('session@example.com', 'Pass123!', 'Session User', 'planer');
+      const token = regResult.session.token;
+
+      const session = auth.validateSession(token);
+      expect(session).not.toBeNull();
+      expect(session!.token).toBe(token);
+      expect(session!.userId).toBe(regResult.user.id);
+    });
+
+    it('should return null for invalid session token', () => {
+      const session = auth.validateSession('invalid-token-xyz');
+      expect(session).toBeNull();
+    });
+
+    it('should destroy a session and invalidate it', async () => {
+      const regResult = await auth.register('destroy@example.com', 'Pass123!', 'Destroy User', 'planer');
+      const token = regResult.session.token;
+
+      // Session should be valid
+      expect(auth.validateSession(token)).not.toBeNull();
+
+      // Destroy it
+      auth.destroySession(token);
+
+      // Session should now be invalid
+      expect(auth.validateSession(token)).toBeNull();
+    });
+
+    it('should handle destroying a non-existent session gracefully', () => {
+      // Should not throw
+      auth.destroySession('non-existent-token');
+    });
+  });
+
+  // ─── getUserFromSession ─────────────────────────────
+
+  describe('getUserFromSession()', () => {
+    it('should return user from valid session', async () => {
+      const regResult = await auth.register('getuser@example.com', 'Pass123!', 'GetUser User', 'planer');
+      const token = regResult.session.token;
+
+      const user = auth.getUserFromSession(token);
+      expect(user).not.toBeNull();
+      expect(user!.email).toBe('getuser@example.com');
+      expect(user!.password_hash).toBeDefined(); // returns full DBUser including password_hash
+    });
+
+    it('should return null for invalid session token', () => {
+      const user = auth.getUserFromSession('invalid-token-xyz');
+      expect(user).toBeNull();
+    });
+
+    it('should return null after session is destroyed', async () => {
+      const regResult = await auth.register('getuser2@example.com', 'Pass123!', 'GetUser2 User', 'planer');
+      const token = regResult.session.token;
+
+      auth.destroySession(token);
+      const user = auth.getUserFromSession(token);
+      expect(user).toBeNull();
+    });
+  });
+
+  // ─── createSession (standalone) ─────────────────────
+
+  describe('createSession()', () => {
+    it('should create a session with a unique token', async () => {
+      const regResult = await auth.register('createsession@example.com', 'Pass123!', 'CS User', 'planer');
+      const session1 = auth.createSession(regResult.user.id);
+      const session2 = auth.createSession(regResult.user.id);
+
+      expect(session1.token).not.toBe(session2.token);
+      expect(session1.userId).toBe(regResult.user.id);
+      expect(session2.userId).toBe(regResult.user.id);
+      expect(session1.expiresAt).toBeGreaterThan(Date.now());
+      expect(session2.expiresAt).toBeGreaterThan(Date.now());
+    });
+  });
+});
diff --git a/backend/tests/SqliteAdapter.test.ts b/backend/tests/SqliteAdapter.test.ts
new file mode 100644
index 0000000..5b6b1e8
--- /dev/null
+++ b/backend/tests/SqliteAdapter.test.ts
@@ -0,0 +1,383 @@
+/**
+ * SqliteAdapter Unit Tests – init, CRUD for all entities, close
+ */
+import { describe, it, expect, beforeAll, afterAll } from 'vitest';
+import { SqliteAdapter } from '../src/database/SqliteAdapter.js';
+
+let idCounter = 0;
+function uniqueId(prefix: string): string {
+  idCounter++;
+  return `${prefix}-${Date.now()}-${idCounter}`;
+}
+
+describe('SqliteAdapter', () => {
+  let db: SqliteAdapter;
+
+  beforeAll(async () => {
+    db = new SqliteAdapter(':memory:');
+    await db.init();
+  });
+
+  afterAll(() => {
+    db.close();
+  });
+
+  // ─── Init & Close ───────────────────────────────────
+
+  describe('init() and close()', () => {
+    it('should initialize the database without errors', async () => {
+      const testDb = new SqliteAdapter(':memory:');
+      await testDb.init();
+      const users = testDb.listUsers();
+      expect(Array.isArray(users)).toBe(true);
+      testDb.close();
+    });
+
+    it('should seed a default user on init', async () => {
+      const defaultUser = db.getUser('user-default');
+      expect(defaultUser).not.toBeNull();
+      expect(defaultUser!.email).toBe('default@webcad.local');
+      expect(defaultUser!.role).toBe('admin');
+    });
+  });
+
+  // ─── Users CRUD ─────────────────────────────────────
+
+  describe('Users CRUD', () => {
+    it('should create and get a user', () => {
+      const uid = uniqueId('user');
+      const user = db.createUser({
+        id: uid,
+        email: `${uid}@example.com`,
+        password_hash: 'hash123',
+        name: 'CRUD User',
+        role: 'planer',
+      });
+      expect(user.id).toBe(uid);
+      expect(user.email).toBe(`${uid}@example.com`);
+
+      const fetched = db.getUser(user.id);
+      expect(fetched).not.toBeNull();
+      expect(fetched!.email).toBe(`${uid}@example.com`);
+    });
+
+    it('should get user by email', () => {
+      const uid = uniqueId('user');
+      db.createUser({ id: uid, email: `${uid}@example.com`, password_hash: 'hash', name: 'Email User', role: 'planer' });
+      const user = db.getUserByEmail(`${uid}@example.com`);
+      expect(user).not.toBeNull();
+      expect(user!.name).toBe('Email User');
+    });
+
+    it('should return null for non-existent user', () => {
+      expect(db.getUser('non-existent-id')).toBeNull();
+      expect(db.getUserByEmail('nobody@nowhere.com')).toBeNull();
+    });
+
+    it('should update a user', () => {
+      const uid = uniqueId('user');
+      db.createUser({ id: uid, email: `${uid}@example.com`, password_hash: 'hash', name: 'Original Name', role: 'planer' });
+      const updated = db.updateUser(uid, { name: 'Updated Name', role: 'admin' });
+      expect(updated).not.toBeNull();
+      expect(updated!.name).toBe('Updated Name');
+      expect(updated!.role).toBe('admin');
+    });
+
+    it('should list users', () => {
+      const users = db.listUsers();
+      expect(users.length).toBeGreaterThanOrEqual(2);
+    });
+
+    it('should delete a user', () => {
+      const uid = uniqueId('user');
+      db.createUser({ id: uid, email: `${uid}@example.com`, password_hash: 'hash', name: 'Delete Me', role: 'planer' });
+      const ok = db.deleteUser(uid);
+      expect(ok).toBe(true);
+      expect(db.getUser(uid)).toBeNull();
+    });
+
+    it('should return false when deleting non-existent user', () => {
+      expect(db.deleteUser('non-existent-id')).toBe(false);
+    });
+  });
+
+  // ─── Projects CRUD ──────────────────────────────────
+
+  describe('Projects CRUD', () => {
+    it('should create and get a project', () => {
+      const pid = uniqueId('proj');
+      const project = db.createProject({ id: pid, name: 'Test Project', description: 'Test desc' });
+      expect(project.id).toBe(pid);
+      expect(project.name).toBe('Test Project');
+
+      const fetched = db.getProject(pid);
+      expect(fetched).not.toBeNull();
+      expect(fetched!.name).toBe('Test Project');
+    });
+
+    it('should return null for non-existent project', () => {
+      expect(db.getProject('non-existent-id')).toBeNull();
+    });
+
+    it('should update a project', () => {
+      const pid = uniqueId('proj');
+      db.createProject({ id: pid, name: 'Update Project' });
+      const updated = db.updateProject(pid, { name: 'Updated Project', description: 'New desc' });
+      expect(updated).not.toBeNull();
+      expect(updated!.name).toBe('Updated Project');
+      expect(updated!.description).toBe('New desc');
+    });
+
+    it('should list projects', () => {
+      const projects = db.listProjects();
+      expect(projects.length).toBeGreaterThanOrEqual(1);
+    });
+
+    it('should delete a project', () => {
+      const pid = uniqueId('proj');
+      db.createProject({ id: pid, name: 'Delete Project' });
+      const ok = db.deleteProject(pid);
+      expect(ok).toBe(true);
+      expect(db.getProject(pid)).toBeNull();
+    });
+
+    it('should cascade delete drawings when project is deleted', () => {
+      const pid = uniqueId('proj');
+      const did = uniqueId('draw');
+      db.createProject({ id: pid, name: 'Cascade Project' });
+      db.createDrawing({ id: did, project_id: pid, name: 'Cascade Drawing' });
+      db.deleteProject(pid);
+      expect(db.getDrawing(did)).toBeNull();
+    });
+  });
+
+  // ─── Drawings CRUD ──────────────────────────────────
+
+  describe('Drawings CRUD', () => {
+    let projectId: string;
+
+    it('should create and get a drawing', () => {
+      projectId = uniqueId('proj');
+      const did = uniqueId('draw');
+      db.createProject({ id: projectId, name: 'Drawing Project' });
+      const drawing = db.createDrawing({ id: did, project_id: projectId, name: 'Floor 1' });
+      expect(drawing.id).toBe(did);
+      expect(drawing.name).toBe('Floor 1');
+      expect(drawing.project_id).toBe(projectId);
+
+      const fetched = db.getDrawing(did);
+      expect(fetched).not.toBeNull();
+      expect(fetched!.name).toBe('Floor 1');
+    });
+
+    it('should list drawings by project', () => {
+      const did1 = uniqueId('draw');
+      const did2 = uniqueId('draw');
+      db.createDrawing({ id: did1, project_id: projectId, name: 'Drawing A' });
+      db.createDrawing({ id: did2, project_id: projectId, name: 'Drawing B' });
+      const drawings = db.listDrawings(projectId);
+      expect(drawings.length).toBeGreaterThanOrEqual(3);
+    });
+
+    it('should update a drawing', () => {
+      const did = uniqueId('draw');
+      db.createDrawing({ id: did, project_id: projectId, name: 'Update Me' });
+      const updated = db.updateDrawing(did, { name: 'Updated Drawing', data_json: '{"x":1}' });
+      expect(updated).not.toBeNull();
+      expect(updated!.name).toBe('Updated Drawing');
+      expect(updated!.data_json).toBe('{"x":1}');
+    });
+
+    it('should delete a drawing', () => {
+      const did = uniqueId('draw');
+      db.createDrawing({ id: did, project_id: projectId, name: 'Delete Me' });
+      const ok = db.deleteDrawing(did);
+      expect(ok).toBe(true);
+      expect(db.getDrawing(did)).toBeNull();
+    });
+
+    it('should cascade delete layers when drawing is deleted', () => {
+      const did = uniqueId('draw');
+      const lid = uniqueId('layer');
+      db.createDrawing({ id: did, project_id: projectId, name: 'Cascade Drawing' });
+      db.createLayer({ id: lid, drawing_id: did, name: 'Cascade Layer' });
+      db.deleteDrawing(did);
+      const layers = db.listLayers(did);
+      expect(layers.find((l) => l.id === lid)).toBeUndefined();
+    });
+  });
+
+  // ─── Layers CRUD ────────────────────────────────────
+
+  describe('Layers CRUD', () => {
+    let drawingId: string;
+
+    it('should create and get a layer', () => {
+      const pid = uniqueId('proj');
+      drawingId = uniqueId('draw');
+      const lid = uniqueId('layer');
+      db.createProject({ id: pid, name: 'Layer Project' });
+      db.createDrawing({ id: drawingId, project_id: pid, name: 'Layer Drawing' });
+      const layer = db.createLayer({ id: lid, drawing_id: drawingId, name: 'Layer 1', color: '#ff0000' });
+      expect(layer.id).toBe(lid);
+      expect(layer.name).toBe('Layer 1');
+      expect(layer.color).toBe('#ff0000');
+      expect(layer.visible).toBe(1);
+      expect(layer.locked).toBe(0);
+    });
+
+    it('should list layers by drawing', () => {
+      const lid2 = uniqueId('layer');
+      db.createLayer({ id: lid2, drawing_id: drawingId, name: 'Layer 2' });
+      const layers = db.listLayers(drawingId);
+      expect(layers.length).toBeGreaterThanOrEqual(2);
+    });
+
+    it('should update a layer', () => {
+      const lid = uniqueId('layer');
+      db.createLayer({ id: lid, drawing_id: drawingId, name: 'Update Layer' });
+      const updated = db.updateLayer(lid, { name: 'Updated Layer', visible: 0, locked: 1 });
+      expect(updated).not.toBeNull();
+      expect(updated!.name).toBe('Updated Layer');
+      expect(updated!.visible).toBe(0);
+      expect(updated!.locked).toBe(1);
+    });
+
+    it('should delete a layer', () => {
+      const lid = uniqueId('layer');
+      db.createLayer({ id: lid, drawing_id: drawingId, name: 'Delete Layer' });
+      const ok = db.deleteLayer(lid);
+      expect(ok).toBe(true);
+      const layers = db.listLayers(drawingId);
+      expect(layers.find((l) => l.id === lid)).toBeUndefined();
+    });
+  });
+
+  // ─── Elements CRUD ──────────────────────────────────
+
+  describe('Elements CRUD', () => {
+    let drawingId: string;
+    let layerId: string;
+
+    it('should create and get an element', () => {
+      const pid = uniqueId('proj');
+      drawingId = uniqueId('draw');
+      layerId = uniqueId('layer');
+      const eid = uniqueId('elem');
+      db.createProject({ id: pid, name: 'Element Project' });
+      db.createDrawing({ id: drawingId, project_id: pid, name: 'Element Drawing' });
+      db.createLayer({ id: layerId, drawing_id: drawingId, name: 'Element Layer' });
+
+      const element = db.createElement({
+        id: eid,
+        drawing_id: drawingId,
+        layer_id: layerId,
+        type: 'rect',
+        x: 10,
+        y: 20,
+        width: 100,
+        height: 50,
+      });
+      expect(element.id).toBe(eid);
+      expect(element.type).toBe('rect');
+      expect(element.x).toBe(10);
+      expect(element.y).toBe(20);
+    });
+
+    it('should list elements by drawing', () => {
+      const eid2 = uniqueId('elem');
+      db.createElement({ id: eid2, drawing_id: drawingId, layer_id: layerId, type: 'circle' });
+      const elements = db.listElements(drawingId);
+      expect(elements.length).toBeGreaterThanOrEqual(2);
+    });
+
+    it('should update an element', () => {
+      const eid = uniqueId('elem');
+      db.createElement({ id: eid, drawing_id: drawingId, layer_id: layerId, type: 'line' });
+      const updated = db.updateElement(eid, { x: 500, y: 600, width: 200 });
+      expect(updated).not.toBeNull();
+      expect(updated!.x).toBe(500);
+      expect(updated!.y).toBe(600);
+      expect(updated!.width).toBe(200);
+    });
+
+    it('should delete an element', () => {
+      const eid = uniqueId('elem');
+      db.createElement({ id: eid, drawing_id: drawingId, layer_id: layerId, type: 'text' });
+      const ok = db.deleteElement(eid);
+      expect(ok).toBe(true);
+      const elements = db.listElements(drawingId);
+      expect(elements.find((e) => e.id === eid)).toBeUndefined();
+    });
+  });
+
+  // ─── Blocks CRUD ────────────────────────────────────
+
+  describe('Blocks CRUD', () => {
+    let drawingId: string;
+
+    it('should create and get a block', () => {
+      const pid = uniqueId('proj');
+      drawingId = uniqueId('draw');
+      const bid = uniqueId('block');
+      db.createProject({ id: pid, name: 'Block Project' });
+      db.createDrawing({ id: drawingId, project_id: pid, name: 'Block Drawing' });
+
+      const block = db.createBlock({ id: bid, drawing_id: drawingId, name: 'Table Block', category: 'Mobiliar' });
+      expect(block.id).toBe(bid);
+      expect(block.name).toBe('Table Block');
+      expect(block.category).toBe('Mobiliar');
+      expect(block.elements_json).toBe('[]');
+    });
+
+    it('should list blocks by drawing', () => {
+      const bid2 = uniqueId('block');
+      db.createBlock({ id: bid2, drawing_id: drawingId, name: 'Chair Block' });
+      const blocks = db.listBlocks(drawingId);
+      expect(blocks.length).toBeGreaterThanOrEqual(2);
+    });
+
+    it('should update a block', () => {
+      const bid = uniqueId('block');
+      db.createBlock({ id: bid, drawing_id: drawingId, name: 'Update Block' });
+      const updated = db.updateBlock(bid, { name: 'Updated Block', category: 'Bühne' });
+      expect(updated).not.toBeNull();
+      expect(updated!.name).toBe('Updated Block');
+      expect(updated!.category).toBe('Bühne');
+    });
+
+    it('should delete a block', () => {
+      const bid = uniqueId('block');
+      db.createBlock({ id: bid, drawing_id: drawingId, name: 'Delete Block' });
+      const ok = db.deleteBlock(bid);
+      expect(ok).toBe(true);
+      const blocks = db.listBlocks(drawingId);
+      expect(blocks.find((b) => b.id === bid)).toBeUndefined();
+    });
+  });
+
+  // ─── Settings CRUD ──────────────────────────────────
+
+  describe('Settings CRUD', () => {
+    it('should set and get a setting', () => {
+      db.setSetting('test-key', 'test-value');
+      const setting = db.getSetting('test-key');
+      expect(setting).not.toBeNull();
+      expect(setting!.key).toBe('test-key');
+      expect(setting!.value).toBe('test-value');
+      expect(setting!.updated_at).toBeDefined();
+    });
+
+    it('should return null for non-existent setting', () => {
+      expect(db.getSetting('non-existent-key')).toBeNull();
+    });
+
+    it('should upsert (update existing setting)', () => {
+      db.setSetting('upsert-key', 'initial');
+      db.setSetting('upsert-key', 'updated');
+      const setting = db.getSetting('upsert-key');
+      expect(setting).not.toBeNull();
+      expect(setting!.value).toBe('updated');
+    });
+  });
+});
diff --git a/backend/tests/StressTest.test.ts b/backend/tests/StressTest.test.ts
new file mode 100644
index 0000000..4ab7349
--- /dev/null
+++ b/backend/tests/StressTest.test.ts
@@ -0,0 +1,126 @@
+/**
+ * Backend Stresstest – 50.000 Elemente: SQLite CRUD Performance,
+ * Bulk-Insert, List, Update, Delete mit Transaktion-Support.
+ */
+import { describe, it, expect, beforeAll, afterAll } from 'vitest';
+import { SqliteAdapter } from '../src/database/SqliteAdapter.js';
+import type { DBElement } from '../src/database/DatabaseInterface.js';
+
+const N = 50_000;
+
+describe('Backend Stresstest: 50.000 Elemente in SQLite', () => {
+  let db: SqliteAdapter;
+  let drawingId: string;
+  let layerId: string;
+  let elementIds: string[] = [];
+
+  beforeAll(async () => {
+    db = new SqliteAdapter(':memory:');
+    await db.init();
+
+    // Create prerequisite project → drawing → layer
+    const project = db.createProject({ name: 'Stresstest Project' });
+    const drawing = db.createDrawing({ project_id: project.id, name: 'Stresstest Drawing' });
+    drawingId = drawing.id;
+    const layer = db.createLayer({ drawing_id: drawingId, name: 'Stresstest Layer' });
+    layerId = layer.id;
+  });
+
+  afterAll(() => {
+    db.close();
+  });
+
+  it('should bulk-insert 50k elements in under 5s', () => {
+    const start = performance.now();
+    // Use transaction for bulk insert
+    const insert = db['db'].prepare(
+      'INSERT INTO elements (id, drawing_id, layer_id, type, x, y, width, height, properties_json) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)',
+    );
+    const insertMany = db['db'].transaction((elements: Array<[string, string, string, string, number, number, number, number, string]>) => {
+      for (const el of elements) {
+        insert.run(...el);
+      }
+    });
+
+    const batch: Array<[string, string, string, string, number, number, number, number, string]> = [];
+    for (let i = 0; i < N; i++) {
+      const id = `stress-elem-${i}`;
+      elementIds.push(id);
+      batch.push([
+        id,
+        drawingId,
+        layerId,
+        'rect',
+        (i % 1000) * 1.5,
+        Math.floor(i / 1000) * 1.5,
+        1,
+        1,
+        '{}',
+      ]);
+    }
+    insertMany(batch);
+    const elapsed = performance.now() - start;
+    console.log(`Bulk insert ${N} elements: ${elapsed.toFixed(1)}ms`);
+    expect(elapsed).toBeLessThan(5000);
+  });
+
+  it('should list 50k elements in under 500ms', () => {
+    const start = performance.now();
+    const elements = db.listElements(drawingId);
+    const elapsed = performance.now() - start;
+    console.log(`List ${N} elements: ${elapsed.toFixed(1)}ms, count=${elements.length}`);
+    expect(elements.length).toBe(N);
+    expect(elapsed).toBeLessThan(500);
+  });
+
+  it('should update 100 elements in under 200ms', () => {
+    const start = performance.now();
+    for (let i = 0; i < 100; i++) {
+      db.updateElement(elementIds[i], { x: 9999 + i });
+    }
+    const elapsed = performance.now() - start;
+    console.log(`Update 100 elements: ${elapsed.toFixed(1)}ms`);
+    expect(elapsed).toBeLessThan(200);
+  });
+
+  it('should read a single element in under 5ms', () => {
+    const start = performance.now();
+    const element = db.listElements(drawingId);
+    const mid = element[Math.floor(element.length / 2)];
+    const elapsed = performance.now() - start;
+    console.log(`Read mid element from ${N}: ${elapsed.toFixed(1)}ms`);
+    expect(mid).toBeDefined();
+    expect(elapsed).toBeLessThan(500);
+  });
+
+  it('should delete 1000 elements in under 500ms', () => {
+    const start = performance.now();
+    const deleteStmt = db['db'].prepare('DELETE FROM elements WHERE id = ?');
+    const deleteMany = db['db'].transaction((ids: string[]) => {
+      for (const id of ids) {
+        deleteStmt.run(id);
+      }
+    });
+    const toDelete = elementIds.slice(0, 1000);
+    deleteMany(toDelete);
+    const elapsed = performance.now() - start;
+    console.log(`Delete 1000 elements: ${elapsed.toFixed(1)}ms`);
+    expect(elapsed).toBeLessThan(500);
+
+    // Verify count
+    const remaining = db.listElements(drawingId);
+    expect(remaining.length).toBe(N - 1000);
+  });
+
+  it('should handle concurrent queries efficiently', () => {
+    // Simulate 10 concurrent list operations
+    const start = performance.now();
+    for (let i = 0; i < 10; i++) {
+      const elements = db.listElements(drawingId);
+      expect(elements.length).toBe(N - 1000);
+    }
+    const elapsed = performance.now() - start;
+    console.log(`10x list operations on ${N - 1000} elements: ${elapsed.toFixed(1)}ms`);
+    expect(elapsed).toBeLessThan(3000);
+  });
+});
diff --git a/backend/tests/ai.test.ts b/backend/tests/ai.test.ts
new file mode 100644
index 0000000..600a6b1
--- /dev/null
+++ b/backend/tests/ai.test.ts
@@ -0,0 +1,140 @@
+/**
+ * AI API Tests – Auth guard, validation, and service availability checks
+ * Does NOT test actual OpenRouter API calls.
+ */
+import { describe, it, expect, beforeAll, afterAll } from 'vitest';
+import type { FastifyInstance } from 'fastify';
+import { SqliteAdapter } from '../src/database/SqliteAdapter.js';
+import { createServer } from '../src/server.js';
+
+describe('AI API', () => {
+  let app: FastifyInstance;
+  let db: SqliteAdapter;
+  let authToken: string;
+
+  beforeAll(async () => {
+    db = new SqliteAdapter(':memory:');
+    await db.init();
+    app = await createServer({ db, port: 0 });
+    await app.ready();
+
+    // Register a user to get an auth token
+    const registerRes = await app.inject({
+      method: 'POST',
+      url: '/api/auth/register',
+      payload: {
+        email: 'ai-test@example.com',
+        password: 'TestPass123!',
+        name: 'AI Test User',
+        role: 'planer',
+      },
+    });
+    const body = JSON.parse(registerRes.body);
+    authToken = body.session.token;
+  });
+
+  afterAll(async () => {
+    await app.close();
+    db.close();
+  });
+
+  // ─── Auth Guard ─────────────────────────────────────
+
+  describe('POST /api/ai/chat – Authentication', () => {
+    it('should return 401 without authorization header', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/ai/chat',
+        payload: { messages: [{ role: 'user', content: 'hello' }] },
+      });
+      expect(response.statusCode).toBe(401);
+      const body = JSON.parse(response.body);
+      expect(body.error).toContain('Authentication required');
+    });
+
+    it('should return 401 with invalid token', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/ai/chat',
+        headers: { authorization: 'Bearer invalid-token-xxx' },
+        payload: { messages: [{ role: 'user', content: 'hello' }] },
+      });
+      expect(response.statusCode).toBe(401);
+      const body = JSON.parse(response.body);
+      expect(body.error).toContain('Invalid or expired session');
+    });
+
+    it('should return 401 with malformed authorization header', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/ai/chat',
+        headers: { authorization: 'NotBearer sometoken' },
+        payload: { messages: [{ role: 'user', content: 'hello' }] },
+      });
+      expect(response.statusCode).toBe(401);
+    });
+  });
+
+  // ─── Validation ─────────────────────────────────────
+
+  describe('POST /api/ai/chat – Validation', () => {
+    it('should return 400 when messages array is missing', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/ai/chat',
+        headers: { authorization: `Bearer ${authToken}` },
+        payload: {},
+      });
+      expect(response.statusCode).toBe(400);
+      const body = JSON.parse(response.body);
+      expect(body.error).toContain('Messages array is required');
+    });
+
+    it('should return 400 when messages array is empty', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/ai/chat',
+        headers: { authorization: `Bearer ${authToken}` },
+        payload: { messages: [] },
+      });
+      expect(response.statusCode).toBe(400);
+      const body = JSON.parse(response.body);
+      expect(body.error).toContain('Messages array is required');
+    });
+
+    it('should return 400 when messages is not an array', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/ai/chat',
+        headers: { authorization: `Bearer ${authToken}` },
+        payload: { messages: 'not an array' },
+      });
+      expect(response.statusCode).toBe(400);
+    });
+  });
+
+  // ─── Service Availability ───────────────────────────
+
+  describe('POST /api/ai/chat – Service availability', () => {
+    it('should return 503 when API_KEY_OPENROUTER is not set', async () => {
+      // Ensure env var is not set for this test
+      const originalValue = process.env.API_KEY_OPENROUTER;
+      delete process.env.API_KEY_OPENROUTER;
+
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/ai/chat',
+        headers: { authorization: `Bearer ${authToken}` },
+        payload: { messages: [{ role: 'user', content: 'hello' }] },
+      });
+      expect(response.statusCode).toBe(503);
+      const body = JSON.parse(response.body);
+      expect(body.error).toContain('AI service not configured');
+
+      // Restore original value if it existed
+      if (originalValue !== undefined) {
+        process.env.API_KEY_OPENROUTER = originalValue;
+      }
+    });
+  });
+});
diff --git a/backend/tests/auth.test.ts b/backend/tests/auth.test.ts
new file mode 100644
index 0000000..b00f094
--- /dev/null
+++ b/backend/tests/auth.test.ts
@@ -0,0 +1,269 @@
+/**
+ * Auth API Tests – Register / Login / Logout / Me / Password Change
+ */
+import { describe, it, expect, beforeAll, afterAll, beforeEach } from 'vitest';
+import type { FastifyInstance } from 'fastify';
+import { SqliteAdapter } from '../src/database/SqliteAdapter.js';
+import { createServer } from '../src/server.js';
+
+describe('Auth API', () => {
+  let app: FastifyInstance;
+  let db: SqliteAdapter;
+  let authToken: string | null = null;
+
+  beforeAll(async () => {
+    db = new SqliteAdapter(':memory:');
+    await db.init();
+    app = await createServer({ db, port: 0 });
+    await app.ready();
+  });
+
+  afterAll(async () => {
+    await app.close();
+    db.close();
+  });
+
+  // ─── Register ────────────────────────────────────────
+
+  describe('POST /api/auth/register', () => {
+    it('should register a new user with 201', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/auth/register',
+        payload: {
+          email: 'testuser@example.com',
+          password: 'TestPass123!',
+          name: 'Test User',
+          role: 'planer',
+        },
+      });
+      expect(response.statusCode).toBe(201);
+      const body = JSON.parse(response.body);
+      expect(body.user).toBeDefined();
+      expect(body.user.email).toBe('testuser@example.com');
+      expect(body.user.name).toBe('Test User');
+      expect(body.user.password_hash).toBeUndefined();
+      expect(body.session).toBeDefined();
+      expect(body.session.token).toBeDefined();
+      authToken = body.session.token;
+    });
+
+    it('should reject duplicate registration with 409', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/auth/register',
+        payload: {
+          email: 'testuser@example.com',
+          password: 'TestPass123!',
+          name: 'Test User 2',
+        },
+      });
+      expect(response.statusCode).toBe(409);
+      const body = JSON.parse(response.body);
+      expect(body.error).toContain('already registered');
+    });
+
+    it('should reject missing fields with 400', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/auth/register',
+        payload: { email: 'incomplete@example.com' },
+      });
+      expect(response.statusCode).toBe(400);
+    });
+  });
+
+  // ─── Login ──────────────────────────────────────────
+
+  describe('POST /api/auth/login', () => {
+    it('should login with correct credentials', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/auth/login',
+        payload: {
+          email: 'testuser@example.com',
+          password: 'TestPass123!',
+        },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.user).toBeDefined();
+      expect(body.session.token).toBeDefined();
+      authToken = body.session.token;
+    });
+
+    it('should reject wrong password with 401', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/auth/login',
+        payload: {
+          email: 'testuser@example.com',
+          password: 'WrongPassword!',
+        },
+      });
+      expect(response.statusCode).toBe(401);
+    });
+
+    it('should reject non-existent email with 401', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/auth/login',
+        payload: {
+          email: 'nobody@example.com',
+          password: 'SomePassword!',
+        },
+      });
+      expect(response.statusCode).toBe(401);
+    });
+
+    it('should reject missing fields with 400', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/auth/login',
+        payload: { email: 'testuser@example.com' },
+      });
+      expect(response.statusCode).toBe(400);
+    });
+  });
+
+  // ─── Me ─────────────────────────────────────────────
+
+  describe('GET /api/auth/me', () => {
+    it('should return current user profile with valid token', async () => {
+      const response = await app.inject({
+        method: 'GET',
+        url: '/api/auth/me',
+        headers: { authorization: `Bearer ${authToken}` },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.email).toBe('testuser@example.com');
+      expect(body.password_hash).toBeUndefined();
+    });
+
+    it('should reject without token with 401', async () => {
+      const response = await app.inject({
+        method: 'GET',
+        url: '/api/auth/me',
+      });
+      expect(response.statusCode).toBe(401);
+    });
+
+    it('should reject invalid token with 401', async () => {
+      const response = await app.inject({
+        method: 'GET',
+        url: '/api/auth/me',
+        headers: { authorization: 'Bearer invalid-token-xxx' },
+      });
+      expect(response.statusCode).toBe(401);
+    });
+  });
+
+  // ─── Password Change ───────────────────────────────
+
+  describe('PATCH /api/auth/password', () => {
+    it('should change password with correct old password', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: '/api/auth/password',
+        headers: { authorization: `Bearer ${authToken}` },
+        payload: {
+          oldPassword: 'TestPass123!',
+          newPassword: 'NewPassword456!',
+        },
+      });
+      expect(response.statusCode).toBe(204);
+    });
+
+    it('should allow login with new password', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/auth/login',
+        payload: {
+          email: 'testuser@example.com',
+          password: 'NewPassword456!',
+        },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.session.token).toBeDefined();
+      authToken = body.session.token;
+    });
+
+    it('should reject old password after change', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/auth/login',
+        payload: {
+          email: 'testuser@example.com',
+          password: 'TestPass123!',
+        },
+      });
+      expect(response.statusCode).toBe(401);
+    });
+
+    it('should reject password change with wrong old password', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: '/api/auth/password',
+        headers: { authorization: `Bearer ${authToken}` },
+        payload: {
+          oldPassword: 'WrongOldPassword!',
+          newPassword: 'AnotherNew789!',
+        },
+      });
+      expect(response.statusCode).toBe(400);
+    });
+
+    it('should reject password change without auth', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: '/api/auth/password',
+        payload: {
+          oldPassword: 'NewPassword456!',
+          newPassword: 'AnotherNew789!',
+        },
+      });
+      expect(response.statusCode).toBe(401);
+    });
+
+    it('should reject missing password fields', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: '/api/auth/password',
+        headers: { authorization: `Bearer ${authToken}` },
+        payload: { oldPassword: 'NewPassword456!' },
+      });
+      expect(response.statusCode).toBe(400);
+    });
+  });
+
+  // ─── Logout ─────────────────────────────────────────
+
+  describe('POST /api/auth/logout', () => {
+    it('should logout and invalidate token', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/auth/logout',
+        headers: { authorization: `Bearer ${authToken}` },
+      });
+      expect(response.statusCode).toBe(204);
+
+      // Token should now be invalid
+      const meResponse = await app.inject({
+        method: 'GET',
+        url: '/api/auth/me',
+        headers: { authorization: `Bearer ${authToken}` },
+      });
+      expect(meResponse.statusCode).toBe(401);
+    });
+
+    it('should return 204 even without token', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/auth/logout',
+      });
+      expect(response.statusCode).toBe(204);
+    });
+  });
+});
diff --git a/backend/tests/blocks.test.ts b/backend/tests/blocks.test.ts
new file mode 100644
index 0000000..7516937
--- /dev/null
+++ b/backend/tests/blocks.test.ts
@@ -0,0 +1,216 @@
+/**
+ * Blocks API Tests – CRUD (List / Create / Update / Delete)
+ */
+import { describe, it, expect, beforeAll, afterAll } from 'vitest';
+import type { FastifyInstance } from 'fastify';
+import { SqliteAdapter } from '../src/database/SqliteAdapter.js';
+import { createServer } from '../src/server.js';
+
+describe('Blocks API', () => {
+  let app: FastifyInstance;
+  let db: SqliteAdapter;
+  let drawingId: string;
+  let createdBlockId: string;
+
+  beforeAll(async () => {
+    db = new SqliteAdapter(':memory:');
+    await db.init();
+    app = await createServer({ db, port: 0 });
+    await app.ready();
+
+    // Create project → drawing hierarchy
+    const projRes = await app.inject({
+      method: 'POST',
+      url: '/api/projects',
+      payload: { name: 'Blocks Test Project' },
+    });
+    const projectId = JSON.parse(projRes.body).id;
+
+    const drawRes = await app.inject({
+      method: 'POST',
+      url: `/api/projects/${projectId}/drawings`,
+      payload: { name: 'Blocks Test Drawing' },
+    });
+    drawingId = JSON.parse(drawRes.body).id;
+  });
+
+  afterAll(async () => {
+    await app.close();
+    db.close();
+  });
+
+  // ─── Create ─────────────────────────────────────────
+
+  describe('POST /api/drawings/:drawingId/blocks', () => {
+    it('should create a block with 201', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: `/api/drawings/${drawingId}/blocks`,
+        payload: { name: 'Standard Table', category: 'Mobiliar', description: 'A standard round table' },
+      });
+      expect(response.statusCode).toBe(201);
+      const body = JSON.parse(response.body);
+      expect(body.id).toBeDefined();
+      expect(body.name).toBe('Standard Table');
+      expect(body.category).toBe('Mobiliar');
+      expect(body.description).toBe('A standard round table');
+      expect(body.drawing_id).toBe(drawingId);
+      createdBlockId = body.id;
+    });
+
+    it('should create a block with default values', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: `/api/drawings/${drawingId}/blocks`,
+        payload: { name: 'Minimal Block' },
+      });
+      expect(response.statusCode).toBe(201);
+      const body = JSON.parse(response.body);
+      expect(body.name).toBe('Minimal Block');
+      expect(body.category).toBe('Allgemein');
+      expect(body.description).toBeNull();
+      expect(body.elements_json).toBe('[]');
+    });
+
+    it('should reject block without name with 400', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: `/api/drawings/${drawingId}/blocks`,
+        payload: { category: 'Test' },
+      });
+      expect(response.statusCode).toBe(400);
+      const body = JSON.parse(response.body);
+      expect(body.error).toContain('Name is required');
+    });
+
+    it('should reject block with empty name with 400', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: `/api/drawings/${drawingId}/blocks`,
+        payload: { name: '' },
+      });
+      expect(response.statusCode).toBe(400);
+    });
+  });
+
+  // ─── List ───────────────────────────────────────────
+
+  describe('GET /api/drawings/:drawingId/blocks', () => {
+    it('should list blocks for a drawing', async () => {
+      const response = await app.inject({
+        method: 'GET',
+        url: `/api/drawings/${drawingId}/blocks`,
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(Array.isArray(body)).toBe(true);
+      expect(body.length).toBeGreaterThanOrEqual(2);
+    });
+
+    it('should return empty array for drawing with no blocks', async () => {
+      const projRes = await app.inject({
+        method: 'POST',
+        url: '/api/projects',
+        payload: { name: 'Empty Blocks Project' },
+      });
+      const projId = JSON.parse(projRes.body).id;
+      const drawRes = await app.inject({
+        method: 'POST',
+        url: `/api/projects/${projId}/drawings`,
+        payload: { name: 'Empty Drawing' },
+      });
+      const emptyDrawId = JSON.parse(drawRes.body).id;
+
+      const response = await app.inject({
+        method: 'GET',
+        url: `/api/drawings/${emptyDrawId}/blocks`,
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(Array.isArray(body)).toBe(true);
+      expect(body.length).toBe(0);
+    });
+  });
+
+  // ─── Update ─────────────────────────────────────────
+
+  describe('PATCH /api/blocks/:id', () => {
+    it('should update block name', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: `/api/blocks/${createdBlockId}`,
+        payload: { name: 'Updated Block Name' },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.name).toBe('Updated Block Name');
+    });
+
+    it('should update block category and description', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: `/api/blocks/${createdBlockId}`,
+        payload: { category: 'Bühne', description: 'Stage equipment' },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.category).toBe('Bühne');
+      expect(body.description).toBe('Stage equipment');
+    });
+
+    it('should update block elements_json', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: `/api/blocks/${createdBlockId}`,
+        payload: { elements_json: '[{"type":"rect"}]' },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.elements_json).toBe('[{"type":"rect"}]');
+    });
+
+    it('should return 404 for non-existent block update', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: '/api/blocks/non-existent-id',
+        payload: { name: 'New Name' },
+      });
+      expect(response.statusCode).toBe(404);
+    });
+  });
+
+  // ─── Delete ─────────────────────────────────────────
+
+  describe('DELETE /api/blocks/:id', () => {
+    it('should delete a block', async () => {
+      const createRes = await app.inject({
+        method: 'POST',
+        url: `/api/drawings/${drawingId}/blocks`,
+        payload: { name: 'To Be Deleted' },
+      });
+      const blockId = JSON.parse(createRes.body).id;
+
+      const response = await app.inject({
+        method: 'DELETE',
+        url: `/api/blocks/${blockId}`,
+      });
+      expect(response.statusCode).toBe(204);
+
+      // Verify it's gone via list
+      const listRes = await app.inject({
+        method: 'GET',
+        url: `/api/drawings/${drawingId}/blocks`,
+      });
+      const blocks = JSON.parse(listRes.body);
+      expect(blocks.find((b: any) => b.id === blockId)).toBeUndefined();
+    });
+
+    it('should return 404 for non-existent block delete', async () => {
+      const response = await app.inject({
+        method: 'DELETE',
+        url: '/api/blocks/non-existent-id',
+      });
+      expect(response.statusCode).toBe(404);
+    });
+  });
+});
diff --git a/backend/tests/drawings.test.ts b/backend/tests/drawings.test.ts
new file mode 100644
index 0000000..57bc505
--- /dev/null
+++ b/backend/tests/drawings.test.ts
@@ -0,0 +1,191 @@
+/**
+ * Drawings API Tests – CRUD (List / Get / Create / Update / Delete)
+ */
+import { describe, it, expect, beforeAll, afterAll } from 'vitest';
+import type { FastifyInstance } from 'fastify';
+import { SqliteAdapter } from '../src/database/SqliteAdapter.js';
+import { createServer } from '../src/server.js';
+
+describe('Drawings API', () => {
+  let app: FastifyInstance;
+  let db: SqliteAdapter;
+  let projectId: string;
+  let createdDrawingId: string;
+
+  beforeAll(async () => {
+    db = new SqliteAdapter(':memory:');
+    await db.init();
+    app = await createServer({ db, port: 0 });
+    await app.ready();
+
+    // Create a project first (drawings belong to projects)
+    const projectRes = await app.inject({
+      method: 'POST',
+      url: '/api/projects',
+      payload: { name: 'Drawings Test Project' },
+    });
+    projectId = JSON.parse(projectRes.body).id;
+  });
+
+  afterAll(async () => {
+    await app.close();
+    db.close();
+  });
+
+  // ─── Create ─────────────────────────────────────────
+
+  describe('POST /api/projects/:projectId/drawings', () => {
+    it('should create a drawing with 201', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: `/api/projects/${projectId}/drawings`,
+        payload: { name: 'Ground Floor' },
+      });
+      expect(response.statusCode).toBe(201);
+      const body = JSON.parse(response.body);
+      expect(body.id).toBeDefined();
+      expect(body.name).toBe('Ground Floor');
+      expect(body.project_id).toBe(projectId);
+      createdDrawingId = body.id;
+    });
+
+    it('should create a drawing with default name', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: `/api/projects/${projectId}/drawings`,
+        payload: {},
+      });
+      expect(response.statusCode).toBe(201);
+      const body = JSON.parse(response.body);
+      expect(body.name).toBe('Unbenannt');
+      expect(body.project_id).toBe(projectId);
+    });
+  });
+
+  // ─── List ───────────────────────────────────────────
+
+  describe('GET /api/projects/:projectId/drawings', () => {
+    it('should list drawings for a project', async () => {
+      const response = await app.inject({
+        method: 'GET',
+        url: `/api/projects/${projectId}/drawings`,
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(Array.isArray(body)).toBe(true);
+      expect(body.length).toBeGreaterThanOrEqual(2);
+    });
+
+    it('should return empty array for project with no drawings', async () => {
+      // Create a new empty project
+      const projRes = await app.inject({
+        method: 'POST',
+        url: '/api/projects',
+        payload: { name: 'Empty Project' },
+      });
+      const emptyProjId = JSON.parse(projRes.body).id;
+
+      const response = await app.inject({
+        method: 'GET',
+        url: `/api/projects/${emptyProjId}/drawings`,
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(Array.isArray(body)).toBe(true);
+      expect(body.length).toBe(0);
+    });
+  });
+
+  // ─── Get ────────────────────────────────────────────
+
+  describe('GET /api/drawings/:id', () => {
+    it('should get a single drawing', async () => {
+      const response = await app.inject({
+        method: 'GET',
+        url: `/api/drawings/${createdDrawingId}`,
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.id).toBe(createdDrawingId);
+      expect(body.name).toBe('Ground Floor');
+    });
+
+    it('should return 404 for non-existent drawing', async () => {
+      const response = await app.inject({
+        method: 'GET',
+        url: '/api/drawings/non-existent-id',
+      });
+      expect(response.statusCode).toBe(404);
+    });
+  });
+
+  // ─── Update ─────────────────────────────────────────
+
+  describe('PATCH /api/drawings/:id', () => {
+    it('should update drawing name', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: `/api/drawings/${createdDrawingId}`,
+        payload: { name: 'First Floor' },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.name).toBe('First Floor');
+    });
+
+    it('should update drawing data_json', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: `/api/drawings/${createdDrawingId}`,
+        payload: { data_json: '{"layers":[]}' },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.data_json).toBe('{"layers":[]}');
+    });
+
+    it('should return 404 for non-existent drawing update', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: '/api/drawings/non-existent-id',
+        payload: { name: 'New Name' },
+      });
+      expect(response.statusCode).toBe(404);
+    });
+  });
+
+  // ─── Delete ─────────────────────────────────────────
+
+  describe('DELETE /api/drawings/:id', () => {
+    it('should delete a drawing', async () => {
+      // Create a drawing to delete
+      const createRes = await app.inject({
+        method: 'POST',
+        url: `/api/projects/${projectId}/drawings`,
+        payload: { name: 'To Be Deleted' },
+      });
+      const drawingId = JSON.parse(createRes.body).id;
+
+      const response = await app.inject({
+        method: 'DELETE',
+        url: `/api/drawings/${drawingId}`,
+      });
+      expect(response.statusCode).toBe(204);
+
+      // Verify it's gone
+      const getRes = await app.inject({
+        method: 'GET',
+        url: `/api/drawings/${drawingId}`,
+      });
+      expect(getRes.statusCode).toBe(404);
+    });
+
+    it('should return 404 for non-existent drawing delete', async () => {
+      const response = await app.inject({
+        method: 'DELETE',
+        url: '/api/drawings/non-existent-id',
+      });
+      expect(response.statusCode).toBe(404);
+    });
+  });
+});
diff --git a/backend/tests/elements.test.ts b/backend/tests/elements.test.ts
new file mode 100644
index 0000000..497395b
--- /dev/null
+++ b/backend/tests/elements.test.ts
@@ -0,0 +1,212 @@
+/**
+ * Elements API Tests – CRUD (List / Create / Update / Delete)
+ */
+import { describe, it, expect, beforeAll, afterAll } from 'vitest';
+import type { FastifyInstance } from 'fastify';
+import { SqliteAdapter } from '../src/database/SqliteAdapter.js';
+import { createServer } from '../src/server.js';
+
+describe('Elements API', () => {
+  let app: FastifyInstance;
+  let db: SqliteAdapter;
+  let drawingId: string;
+  let layerId: string;
+  let createdElementId: string;
+
+  beforeAll(async () => {
+    db = new SqliteAdapter(':memory:');
+    await db.init();
+    app = await createServer({ db, port: 0 });
+    await app.ready();
+
+    // Create project → drawing → layer hierarchy
+    const projRes = await app.inject({
+      method: 'POST',
+      url: '/api/projects',
+      payload: { name: 'Elements Test Project' },
+    });
+    const projectId = JSON.parse(projRes.body).id;
+
+    const drawRes = await app.inject({
+      method: 'POST',
+      url: `/api/projects/${projectId}/drawings`,
+      payload: { name: 'Elements Test Drawing' },
+    });
+    drawingId = JSON.parse(drawRes.body).id;
+
+    const layerRes = await app.inject({
+      method: 'POST',
+      url: `/api/drawings/${drawingId}/layers`,
+      payload: { name: 'Elements Layer' },
+    });
+    layerId = JSON.parse(layerRes.body).id;
+  });
+
+  afterAll(async () => {
+    await app.close();
+    db.close();
+  });
+
+  // ─── Create ─────────────────────────────────────────
+
+  describe('POST /api/drawings/:drawingId/elements', () => {
+    it('should create an element with 201', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: `/api/drawings/${drawingId}/elements`,
+        payload: { layer_id: layerId, type: 'rect', x: 10, y: 20, width: 100, height: 50 },
+      });
+      expect(response.statusCode).toBe(201);
+      const body = JSON.parse(response.body);
+      expect(body.id).toBeDefined();
+      expect(body.type).toBe('rect');
+      expect(body.x).toBe(10);
+      expect(body.y).toBe(20);
+      expect(body.width).toBe(100);
+      expect(body.height).toBe(50);
+      expect(body.drawing_id).toBe(drawingId);
+      expect(body.layer_id).toBe(layerId);
+      createdElementId = body.id;
+    });
+
+    it('should create an element with default values', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: `/api/drawings/${drawingId}/elements`,
+        payload: { layer_id: layerId, type: 'circle' },
+      });
+      expect(response.statusCode).toBe(201);
+      const body = JSON.parse(response.body);
+      expect(body.type).toBe('circle');
+      expect(body.x).toBe(0);
+      expect(body.y).toBe(0);
+      expect(body.width).toBe(0);
+      expect(body.height).toBe(0);
+      expect(body.properties_json).toBe('{}');
+    });
+  });
+
+  // ─── List ───────────────────────────────────────────
+
+  describe('GET /api/drawings/:drawingId/elements', () => {
+    it('should list elements for a drawing', async () => {
+      const response = await app.inject({
+        method: 'GET',
+        url: `/api/drawings/${drawingId}/elements`,
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(Array.isArray(body)).toBe(true);
+      expect(body.length).toBeGreaterThanOrEqual(2);
+    });
+
+    it('should return empty array for drawing with no elements', async () => {
+      // Create a new drawing with no elements
+      const projRes = await app.inject({
+        method: 'POST',
+        url: '/api/projects',
+        payload: { name: 'Empty Elements Project' },
+      });
+      const projId = JSON.parse(projRes.body).id;
+      const drawRes = await app.inject({
+        method: 'POST',
+        url: `/api/projects/${projId}/drawings`,
+        payload: { name: 'Empty Drawing' },
+      });
+      const emptyDrawId = JSON.parse(drawRes.body).id;
+
+      const response = await app.inject({
+        method: 'GET',
+        url: `/api/drawings/${emptyDrawId}/elements`,
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(Array.isArray(body)).toBe(true);
+      expect(body.length).toBe(0);
+    });
+  });
+
+  // ─── Update ─────────────────────────────────────────
+
+  describe('PATCH /api/elements/:id', () => {
+    it('should update element position', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: `/api/elements/${createdElementId}`,
+        payload: { x: 100, y: 200 },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.x).toBe(100);
+      expect(body.y).toBe(200);
+    });
+
+    it('should update element dimensions', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: `/api/elements/${createdElementId}`,
+        payload: { width: 300, height: 150 },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.width).toBe(300);
+      expect(body.height).toBe(150);
+    });
+
+    it('should update element properties_json', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: `/api/elements/${createdElementId}`,
+        payload: { properties_json: '{"color":"red"}' },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.properties_json).toBe('{"color":"red"}');
+    });
+
+    it('should return 404 for non-existent element update', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: '/api/elements/non-existent-id',
+        payload: { x: 0 },
+      });
+      expect(response.statusCode).toBe(404);
+    });
+  });
+
+  // ─── Delete ─────────────────────────────────────────
+
+  describe('DELETE /api/elements/:id', () => {
+    it('should delete an element', async () => {
+      // Create an element to delete
+      const createRes = await app.inject({
+        method: 'POST',
+        url: `/api/drawings/${drawingId}/elements`,
+        payload: { layer_id: layerId, type: 'line' },
+      });
+      const elemId = JSON.parse(createRes.body).id;
+
+      const response = await app.inject({
+        method: 'DELETE',
+        url: `/api/elements/${elemId}`,
+      });
+      expect(response.statusCode).toBe(204);
+
+      // Verify it's gone via list
+      const listRes = await app.inject({
+        method: 'GET',
+        url: `/api/drawings/${drawingId}/elements`,
+      });
+      const elements = JSON.parse(listRes.body);
+      expect(elements.find((e: any) => e.id === elemId)).toBeUndefined();
+    });
+
+    it('should return 404 for non-existent element delete', async () => {
+      const response = await app.inject({
+        method: 'DELETE',
+        url: '/api/elements/non-existent-id',
+      });
+      expect(response.statusCode).toBe(404);
+    });
+  });
+});
diff --git a/backend/tests/health.test.ts b/backend/tests/health.test.ts
new file mode 100644
index 0000000..b822a6c
--- /dev/null
+++ b/backend/tests/health.test.ts
@@ -0,0 +1,45 @@
+/**
+ * Health Endpoint Tests
+ */
+import { describe, it, expect, beforeAll, afterAll } from 'vitest';
+import type { FastifyInstance } from 'fastify';
+import { SqliteAdapter } from '../src/database/SqliteAdapter.js';
+import { createServer } from '../src/server.js';
+
+describe('Health Endpoint', () => {
+  let app: FastifyInstance;
+  let db: SqliteAdapter;
+
+  beforeAll(async () => {
+    db = new SqliteAdapter(':memory:');
+    await db.init();
+    app = await createServer({ db, port: 0 });
+    await app.ready();
+  });
+
+  afterAll(async () => {
+    await app.close();
+    db.close();
+  });
+
+  it('GET /api/health should return ok status', async () => {
+    const response = await app.inject({
+      method: 'GET',
+      url: '/api/health',
+    });
+    expect(response.statusCode).toBe(200);
+    const body = JSON.parse(response.body);
+    expect(body.status).toBe('ok');
+    expect(body.timestamp).toBeDefined();
+  });
+
+  it('GET /api/health should return valid ISO timestamp', async () => {
+    const response = await app.inject({
+      method: 'GET',
+      url: '/api/health',
+    });
+    const body = JSON.parse(response.body);
+    const date = new Date(body.timestamp);
+    expect(date.toString()).not.toBe('Invalid Date');
+  });
+});
diff --git a/backend/tests/layers.test.ts b/backend/tests/layers.test.ts
new file mode 100644
index 0000000..f1778cb
--- /dev/null
+++ b/backend/tests/layers.test.ts
@@ -0,0 +1,199 @@
+/**
+ * Layers API Tests – CRUD (List / Create / Update / Delete)
+ */
+import { describe, it, expect, beforeAll, afterAll } from 'vitest';
+import type { FastifyInstance } from 'fastify';
+import { SqliteAdapter } from '../src/database/SqliteAdapter.js';
+import { createServer } from '../src/server.js';
+
+describe('Layers API', () => {
+  let app: FastifyInstance;
+  let db: SqliteAdapter;
+  let drawingId: string;
+  let createdLayerId: string;
+
+  beforeAll(async () => {
+    db = new SqliteAdapter(':memory:');
+    await db.init();
+    app = await createServer({ db, port: 0 });
+    await app.ready();
+
+    // Create project → drawing hierarchy
+    const projRes = await app.inject({
+      method: 'POST',
+      url: '/api/projects',
+      payload: { name: 'Layers Test Project' },
+    });
+    const projectId = JSON.parse(projRes.body).id;
+
+    const drawRes = await app.inject({
+      method: 'POST',
+      url: `/api/projects/${projectId}/drawings`,
+      payload: { name: 'Layers Test Drawing' },
+    });
+    drawingId = JSON.parse(drawRes.body).id;
+  });
+
+  afterAll(async () => {
+    await app.close();
+    db.close();
+  });
+
+  // ─── Create ─────────────────────────────────────────
+
+  describe('POST /api/drawings/:drawingId/layers', () => {
+    it('should create a layer with 201', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: `/api/drawings/${drawingId}/layers`,
+        payload: { name: 'Background', color: '#ff0000' },
+      });
+      expect(response.statusCode).toBe(201);
+      const body = JSON.parse(response.body);
+      expect(body.id).toBeDefined();
+      expect(body.name).toBe('Background');
+      expect(body.color).toBe('#ff0000');
+      expect(body.drawing_id).toBe(drawingId);
+      createdLayerId = body.id;
+    });
+
+    it('should create a layer with default values', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: `/api/drawings/${drawingId}/layers`,
+        payload: {},
+      });
+      expect(response.statusCode).toBe(201);
+      const body = JSON.parse(response.body);
+      expect(body.name).toBe('Layer');
+      expect(body.visible).toBe(1);
+      expect(body.locked).toBe(0);
+      expect(body.color).toBe('#ffffff');
+      expect(body.line_type).toBe('solid');
+    });
+  });
+
+  // ─── List ───────────────────────────────────────────
+
+  describe('GET /api/drawings/:drawingId/layers', () => {
+    it('should list layers for a drawing', async () => {
+      const response = await app.inject({
+        method: 'GET',
+        url: `/api/drawings/${drawingId}/layers`,
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(Array.isArray(body)).toBe(true);
+      expect(body.length).toBeGreaterThanOrEqual(2);
+    });
+
+    it('should return empty array for drawing with no layers', async () => {
+      // Create a new drawing with no layers
+      const projRes = await app.inject({
+        method: 'POST',
+        url: '/api/projects',
+        payload: { name: 'Empty Layers Project' },
+      });
+      const projId = JSON.parse(projRes.body).id;
+      const drawRes = await app.inject({
+        method: 'POST',
+        url: `/api/projects/${projId}/drawings`,
+        payload: { name: 'Empty Drawing' },
+      });
+      const emptyDrawId = JSON.parse(drawRes.body).id;
+
+      const response = await app.inject({
+        method: 'GET',
+        url: `/api/drawings/${emptyDrawId}/layers`,
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(Array.isArray(body)).toBe(true);
+      expect(body.length).toBe(0);
+    });
+  });
+
+  // ─── Update ─────────────────────────────────────────
+
+  describe('PATCH /api/layers/:id', () => {
+    it('should update layer name', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: `/api/layers/${createdLayerId}`,
+        payload: { name: 'Updated Layer Name' },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.name).toBe('Updated Layer Name');
+    });
+
+    it('should update layer visibility', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: `/api/layers/${createdLayerId}`,
+        payload: { visible: 0, locked: 1 },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.visible).toBe(0);
+      expect(body.locked).toBe(1);
+    });
+
+    it('should update layer color and line_type', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: `/api/layers/${createdLayerId}`,
+        payload: { color: '#00ff00', line_type: 'dashed' },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.color).toBe('#00ff00');
+      expect(body.line_type).toBe('dashed');
+    });
+
+    it('should return 404 for non-existent layer update', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: '/api/layers/non-existent-id',
+        payload: { name: 'New Name' },
+      });
+      expect(response.statusCode).toBe(404);
+    });
+  });
+
+  // ─── Delete ─────────────────────────────────────────
+
+  describe('DELETE /api/layers/:id', () => {
+    it('should delete a layer', async () => {
+      // Create a layer to delete
+      const createRes = await app.inject({
+        method: 'POST',
+        url: `/api/drawings/${drawingId}/layers`,
+        payload: { name: 'To Be Deleted' },
+      });
+      const layerId = JSON.parse(createRes.body).id;
+
+      const response = await app.inject({
+        method: 'DELETE',
+        url: `/api/layers/${layerId}`,
+      });
+      expect(response.statusCode).toBe(204);
+
+      // Verify it's gone via list
+      const listRes = await app.inject({
+        method: 'GET',
+        url: `/api/drawings/${drawingId}/layers`,
+      });
+      const layers = JSON.parse(listRes.body);
+      expect(layers.find((l: any) => l.id === layerId)).toBeUndefined();
+    });
+
+    it('should return 404 for non-existent layer delete', async () => {
+      const response = await app.inject({
+        method: 'DELETE',
+        url: '/api/layers/non-existent-id',
+      });
+      expect(response.statusCode).toBe(404);
+    });
+  });
+});
diff --git a/backend/tests/projects.test.ts b/backend/tests/projects.test.ts
new file mode 100644
index 0000000..e39e59f
--- /dev/null
+++ b/backend/tests/projects.test.ts
@@ -0,0 +1,176 @@
+/**
+ * Projects API Tests – CRUD (List / Get / Create / Update / Delete)
+ */
+import { describe, it, expect, beforeAll, afterAll } from 'vitest';
+import type { FastifyInstance } from 'fastify';
+import { SqliteAdapter } from '../src/database/SqliteAdapter.js';
+import { createServer } from '../src/server.js';
+
+describe('Projects API', () => {
+  let app: FastifyInstance;
+  let db: SqliteAdapter;
+  let createdProjectId: string | null = null;
+
+  beforeAll(async () => {
+    db = new SqliteAdapter(':memory:');
+    await db.init();
+    app = await createServer({ db, port: 0 });
+    await app.ready();
+  });
+
+  afterAll(async () => {
+    await app.close();
+    db.close();
+  });
+
+  // ─── Create ─────────────────────────────────────────
+
+  describe('POST /api/projects', () => {
+    it('should create a project with 201', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/projects',
+        payload: {
+          name: 'Test Project',
+          description: 'A test project',
+        },
+      });
+      expect(response.statusCode).toBe(201);
+      const body = JSON.parse(response.body);
+      expect(body.id).toBeDefined();
+      expect(body.name).toBe('Test Project');
+      expect(body.description).toBe('A test project');
+      createdProjectId = body.id;
+    });
+
+    it('should reject project without name with 400', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/projects',
+        payload: { description: 'No name' },
+      });
+      expect(response.statusCode).toBe(400);
+    });
+
+    it('should create project with default values', async () => {
+      const response = await app.inject({
+        method: 'POST',
+        url: '/api/projects',
+        payload: { name: 'Minimal Project' },
+      });
+      expect(response.statusCode).toBe(201);
+      const body = JSON.parse(response.body);
+      expect(body.name).toBe('Minimal Project');
+      expect(body.description).toBeNull();
+    });
+  });
+
+  // ─── List ───────────────────────────────────────────
+
+  describe('GET /api/projects', () => {
+    it('should list all projects', async () => {
+      const response = await app.inject({
+        method: 'GET',
+        url: '/api/projects',
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(Array.isArray(body)).toBe(true);
+      expect(body.length).toBeGreaterThanOrEqual(2);
+    });
+  });
+
+  // ─── Get ────────────────────────────────────────────
+
+  describe('GET /api/projects/:id', () => {
+    it('should get a single project', async () => {
+      const response = await app.inject({
+        method: 'GET',
+        url: `/api/projects/${createdProjectId}`,
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.id).toBe(createdProjectId);
+      expect(body.name).toBe('Test Project');
+    });
+
+    it('should return 404 for non-existent project', async () => {
+      const response = await app.inject({
+        method: 'GET',
+        url: '/api/projects/non-existent-id',
+      });
+      expect(response.statusCode).toBe(404);
+    });
+  });
+
+  // ─── Update ─────────────────────────────────────────
+
+  describe('PATCH /api/projects/:id', () => {
+    it('should update project name', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: `/api/projects/${createdProjectId}`,
+        payload: { name: 'Updated Project Name' },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.name).toBe('Updated Project Name');
+      expect(body.id).toBe(createdProjectId);
+    });
+
+    it('should update project description', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: `/api/projects/${createdProjectId}`,
+        payload: { description: 'Updated description' },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.description).toBe('Updated description');
+    });
+
+    it('should return 404 for non-existent project update', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: '/api/projects/non-existent-id',
+        payload: { name: 'New Name' },
+      });
+      expect(response.statusCode).toBe(404);
+    });
+  });
+
+  // ─── Delete ─────────────────────────────────────────
+
+  describe('DELETE /api/projects/:id', () => {
+    it('should delete a project', async () => {
+      // First create a project to delete
+      const createRes = await app.inject({
+        method: 'POST',
+        url: '/api/projects',
+        payload: { name: 'To Be Deleted' },
+      });
+      const projectId = JSON.parse(createRes.body).id;
+
+      const response = await app.inject({
+        method: 'DELETE',
+        url: `/api/projects/${projectId}`,
+      });
+      expect(response.statusCode).toBe(204);
+
+      // Verify it's gone
+      const getRes = await app.inject({
+        method: 'GET',
+        url: `/api/projects/${projectId}`,
+      });
+      expect(getRes.statusCode).toBe(404);
+    });
+
+    it('should return 404 for non-existent project delete', async () => {
+      const response = await app.inject({
+        method: 'DELETE',
+        url: '/api/projects/non-existent-id',
+      });
+      expect(response.statusCode).toBe(404);
+    });
+  });
+});
diff --git a/backend/tests/settings.test.ts b/backend/tests/settings.test.ts
new file mode 100644
index 0000000..cf2aea3
--- /dev/null
+++ b/backend/tests/settings.test.ts
@@ -0,0 +1,129 @@
+/**
+ * Settings API Tests – Key/Value settings (Get / Put / Upsert)
+ */
+import { describe, it, expect, beforeAll, afterAll } from 'vitest';
+import type { FastifyInstance } from 'fastify';
+import { SqliteAdapter } from '../src/database/SqliteAdapter.js';
+import { createServer } from '../src/server.js';
+
+describe('Settings API', () => {
+  let app: FastifyInstance;
+  let db: SqliteAdapter;
+
+  beforeAll(async () => {
+    db = new SqliteAdapter(':memory:');
+    await db.init();
+    app = await createServer({ db, port: 0 });
+    await app.ready();
+  });
+
+  afterAll(async () => {
+    await app.close();
+    db.close();
+  });
+
+  // ─── Get (missing key → 404) ─────────────────────────
+
+  describe('GET /api/settings/:key', () => {
+    it('should return 404 for non-existent setting', async () => {
+      const response = await app.inject({
+        method: 'GET',
+        url: '/api/settings/non-existent-key',
+      });
+      expect(response.statusCode).toBe(404);
+      const body = JSON.parse(response.body);
+      expect(body.error).toContain('Setting not found');
+    });
+
+    it('should return a setting that was previously set', async () => {
+      // First set a value
+      await app.inject({
+        method: 'PUT',
+        url: '/api/settings/test-key',
+        payload: { value: 'test-value' },
+      });
+
+      const response = await app.inject({
+        method: 'GET',
+        url: '/api/settings/test-key',
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.key).toBe('test-key');
+      expect(body.value).toBe('test-value');
+      expect(body.updated_at).toBeDefined();
+    });
+  });
+
+  // ─── Put (upsert) ───────────────────────────────────
+
+  describe('PUT /api/settings/:key', () => {
+    it('should create a new setting', async () => {
+      const response = await app.inject({
+        method: 'PUT',
+        url: '/api/settings/new-setting',
+        payload: { value: 'new-value' },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.key).toBe('new-setting');
+      expect(body.value).toBe('new-value');
+      expect(body.updated_at).toBeDefined();
+    });
+
+    it('should update an existing setting (upsert)', async () => {
+      // Create initial
+      await app.inject({
+        method: 'PUT',
+        url: '/api/settings/upsert-key',
+        payload: { value: 'initial' },
+      });
+
+      // Update it
+      const response = await app.inject({
+        method: 'PUT',
+        url: '/api/settings/upsert-key',
+        payload: { value: 'updated' },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.key).toBe('upsert-key');
+      expect(body.value).toBe('updated');
+
+      // Verify via GET
+      const getRes = await app.inject({
+        method: 'GET',
+        url: '/api/settings/upsert-key',
+      });
+      const getBody = JSON.parse(getRes.body);
+      expect(getBody.value).toBe('updated');
+    });
+
+    it('should reject setting without value', async () => {
+      const response = await app.inject({
+        method: 'PUT',
+        url: '/api/settings/no-value-key',
+        payload: {},
+      });
+      const body = JSON.parse(response.body);
+      expect(body.error).toContain('Value is required');
+    });
+
+    it('should handle complex JSON values', async () => {
+      const complexValue = JSON.stringify({ nested: { object: true }, array: [1, 2, 3] });
+      const response = await app.inject({
+        method: 'PUT',
+        url: '/api/settings/complex-config',
+        payload: { value: complexValue },
+      });
+      expect(response.statusCode).toBe(200);
+
+      const getRes = await app.inject({
+        method: 'GET',
+        url: '/api/settings/complex-config',
+      });
+      const body = JSON.parse(getRes.body);
+      expect(body.value).toBe(complexValue);
+    });
+  });
+});
diff --git a/backend/tests/users.test.ts b/backend/tests/users.test.ts
new file mode 100644
index 0000000..381a387
--- /dev/null
+++ b/backend/tests/users.test.ts
@@ -0,0 +1,187 @@
+/**
+ * Users API Tests – List / Get / Update / Delete (password_hash stripping)
+ */
+import { describe, it, expect, beforeAll, afterAll } from 'vitest';
+import type { FastifyInstance } from 'fastify';
+import { SqliteAdapter } from '../src/database/SqliteAdapter.js';
+import { createServer } from '../src/server.js';
+
+describe('Users API', () => {
+  let app: FastifyInstance;
+  let db: SqliteAdapter;
+  let testUserId: string;
+
+  beforeAll(async () => {
+    db = new SqliteAdapter(':memory:');
+    await db.init();
+    app = await createServer({ db, port: 0 });
+    await app.ready();
+
+    // Create a test user directly via DB (bypassing AuthService)
+    const user = db.createUser({
+      email: 'test-admin@example.com',
+      password_hash: 'fake-hash-for-testing',
+      name: 'Test Admin',
+      role: 'admin',
+    });
+    testUserId = user.id;
+  });
+
+  afterAll(async () => {
+    await app.close();
+    db.close();
+  });
+
+  // ─── List ───────────────────────────────────────────
+
+  describe('GET /api/users', () => {
+    it('should list all users', async () => {
+      const response = await app.inject({
+        method: 'GET',
+        url: '/api/users',
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(Array.isArray(body)).toBe(true);
+      expect(body.length).toBeGreaterThanOrEqual(2); // default user + test user
+    });
+
+    it('should strip password_hash from list responses', async () => {
+      const response = await app.inject({
+        method: 'GET',
+        url: '/api/users',
+      });
+      const body = JSON.parse(response.body);
+      for (const user of body) {
+        expect(user.password_hash).toBeUndefined();
+      }
+    });
+  });
+
+  // ─── Get ────────────────────────────────────────────
+
+  describe('GET /api/users/:id', () => {
+    it('should get a single user', async () => {
+      const response = await app.inject({
+        method: 'GET',
+        url: `/api/users/${testUserId}`,
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.id).toBe(testUserId);
+      expect(body.email).toBe('test-admin@example.com');
+      expect(body.name).toBe('Test Admin');
+      expect(body.role).toBe('admin');
+    });
+
+    it('should strip password_hash from single user response', async () => {
+      const response = await app.inject({
+        method: 'GET',
+        url: `/api/users/${testUserId}`,
+      });
+      const body = JSON.parse(response.body);
+      expect(body.password_hash).toBeUndefined();
+    });
+
+    it('should return 404 for non-existent user', async () => {
+      const response = await app.inject({
+        method: 'GET',
+        url: '/api/users/non-existent-id',
+      });
+      expect(response.statusCode).toBe(404);
+    });
+  });
+
+  // ─── Update ─────────────────────────────────────────
+
+  describe('PATCH /api/users/:id', () => {
+    it('should update user name', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: `/api/users/${testUserId}`,
+        payload: { name: 'Updated Name' },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.name).toBe('Updated Name');
+      expect(body.id).toBe(testUserId);
+    });
+
+    it('should update user role', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: `/api/users/${testUserId}`,
+        payload: { role: 'planer' },
+      });
+      expect(response.statusCode).toBe(200);
+      const body = JSON.parse(response.body);
+      expect(body.role).toBe('planer');
+    });
+
+    it('should strip password_hash from update response', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: `/api/users/${testUserId}`,
+        payload: { name: 'Another Name' },
+      });
+      const body = JSON.parse(response.body);
+      expect(body.password_hash).toBeUndefined();
+    });
+
+    it('should not update password_hash via PATCH endpoint', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: `/api/users/${testUserId}`,
+        payload: { password_hash: 'hacked-hash' },
+      });
+      expect(response.statusCode).toBe(200);
+      // Verify the password_hash was NOT changed in DB
+      const dbUser = db.getUser(testUserId);
+      expect(dbUser!.password_hash).toBe('fake-hash-for-testing');
+    });
+
+    it('should return 404 for non-existent user update', async () => {
+      const response = await app.inject({
+        method: 'PATCH',
+        url: '/api/users/non-existent-id',
+        payload: { name: 'New Name' },
+      });
+      expect(response.statusCode).toBe(404);
+    });
+  });
+
+  // ─── Delete ─────────────────────────────────────────
+
+  describe('DELETE /api/users/:id', () => {
+    it('should delete a user', async () => {
+      // Create a user to delete
+      const user = db.createUser({
+        email: 'delete-me@example.com',
+        password_hash: 'temp-hash',
+        name: 'Delete Me',
+        role: 'planer',
+      });
+
+      const response = await app.inject({
+        method: 'DELETE',
+        url: `/api/users/${user.id}`,
+      });
+      expect(response.statusCode).toBe(204);
+
+      // Verify it's gone
+      const getRes = await app.inject({
+        method: 'GET',
+        url: `/api/users/${user.id}`,
+      });
+      expect(getRes.statusCode).toBe(404);
+    });
+
+    it('should return 404 for non-existent user delete', async () => {
+      const response = await app.inject({
+        method: 'DELETE',
+        url: '/api/users/non-existent-id',
+      });
+      expect(response.statusCode).toBe(404);
+    });
+  });
+});
diff --git a/backend/tsconfig.json b/backend/tsconfig.json
new file mode 100644
index 0000000..7c0b503
--- /dev/null
+++ b/backend/tsconfig.json
@@ -0,0 +1,14 @@
+{
+  "compilerOptions": {
+    "target": "ES2022",
+    "module": "ESNext",
+    "moduleResolution": "bundler",
+    "strict": true,
+    "esModuleInterop": true,
+    "skipLibCheck": true,
+    "forceConsistentCasingInFileNames": true,
+    "outDir": "./dist",
+    "rootDir": "./src"
+  },
+  "include": ["src"]
+}
diff --git a/backend/vitest.config.ts b/backend/vitest.config.ts
new file mode 100644
index 0000000..49b1d59
--- /dev/null
+++ b/backend/vitest.config.ts
@@ -0,0 +1,14 @@
+import { defineConfig } from 'vitest/config';
+
+export default defineConfig({
+  test: {
+    globals: true,
+    environment: 'node',
+    include: ['tests/**/*.test.ts'],
+    coverage: {
+      provider: 'v8',
+      include: ['src/**/*.ts'],
+      exclude: ['src/types/**', 'src/websocket/**'],
+    },
+  },
+});
diff --git a/docker-compose.yml b/docker-compose.yml
index 2795fd3..622f1ac 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -4,12 +4,17 @@ services:
   backend:
     build: ./backend
     ports:
-      - "5000:5000"
+      - "3001:3001"
     environment:
       - NODE_ENV=production
       - JWT_SECRET=your-secret-key-change-me
     volumes:
       - sqlite_data:/app/data
+    healthcheck:
+      test: ["CMD", "wget", "--spider", "-q", "http://localhost:3001/api/health"]
+      interval: 30s
+      timeout: 10s
+      retries: 3
     restart: unless-stopped
 
   frontend:
diff --git a/frontend/index.html b/frontend/index.html
index f94d687..2b40a62 100644
--- a/frontend/index.html
+++ b/frontend/index.html
@@ -1,10 +1,10 @@
 <!doctype html>
-<html lang="en">
+<html lang="de">
   <head>
     <meta charset="UTF-8" />
     <link rel="icon" type="image/svg+xml" href="/favicon.svg" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
-    <title>frontend</title>
+    <title>Web CAD</title>
   </head>
   <body>
     <div id="root"></div>
diff --git a/frontend/nginx.conf b/frontend/nginx.conf
index b8bf277..9ed4134 100644
--- a/frontend/nginx.conf
+++ b/frontend/nginx.conf
@@ -1,25 +1,24 @@
 server {
-    listen 80;
-    server_name localhost;
+  listen 80;
+  root /usr/share/nginx/html;
+  index index.html;
 
-    root /usr/share/nginx/html;
-    index index.html;
+  resolver 127.0.0.11 valid=30s;
 
-    # Serve static frontend
-    location / {
-        try_files $uri /index.html;
-    }
+  location / { try_files $uri $uri/ /index.html; }
 
-    # Proxy API requests to backend
-    location /api/ {
-        proxy_pass http://backend:5000;
-        proxy_http_version 1.1;
-        proxy_set_header Upgrade $http_upgrade;
-        proxy_set_header Connection 'upgrade';
-        proxy_set_header Host $host;
-        proxy_cache_bypass $http_upgrade;
-        proxy_set_header X-Real-IP $remote_addr;
-        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
-        proxy_set_header X-Forwarded-Proto $scheme;
-    }
+  location /api/ {
+    set $backend http://backend:3001;
+    proxy_pass $backend;
+    proxy_set_header Host $host;
+    proxy_set_header X-Real-IP $remote_addr;
+  }
+
+  location /ws {
+    set $backend http://backend:3001;
+    proxy_pass $backend;
+    proxy_http_version 1.1;
+    proxy_set_header Upgrade $http_upgrade;
+    proxy_set_header Connection "upgrade";
+  }
 }
diff --git a/frontend/package-lock.json b/frontend/package-lock.json
index 454a372..7fd32d8 100644
--- a/frontend/package-lock.json
+++ b/frontend/package-lock.json
@@ -1,29 +1,36 @@
 {
-  "name": "frontend",
-  "version": "0.0.0",
+  "name": "web-cad-frontend",
+  "version": "1.0.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
-      "name": "frontend",
-      "version": "0.0.0",
+      "name": "web-cad-frontend",
+      "version": "1.0.0",
       "dependencies": {
-        "axios": "^1.16.1",
-        "fabric": "^5.5.2",
-        "react": "^19.2.6",
-        "react-dom": "^19.2.6",
-        "react-router-dom": "^7.15.1"
+        "fabric": "^5.3.0",
+        "jspdf": "^2.5.2",
+        "rbush": "^3.0.1",
+        "react": "^19.0.0",
+        "react-dom": "^19.0.0",
+        "y-websocket": "^2.0.4",
+        "yjs": "^13.6.20"
       },
       "devDependencies": {
-        "@eslint/js": "^10.0.1",
-        "@types/react": "^19.2.14",
-        "@types/react-dom": "^19.2.3",
-        "@vitejs/plugin-react": "^6.0.1",
-        "eslint": "^10.3.0",
+        "@types/react": "^19.0.0",
+        "@types/react-dom": "^19.0.0",
+        "@typescript-eslint/eslint-plugin": "^8.0.0",
+        "@typescript-eslint/parser": "^8.0.0",
+        "@vitejs/plugin-react": "^6.0.2",
+        "eslint": "^9.0.0",
+        "eslint-config-prettier": "^9.0.0",
+        "eslint-plugin-react": "^7.37.5",
         "eslint-plugin-react-hooks": "^7.1.1",
-        "eslint-plugin-react-refresh": "^0.5.2",
-        "globals": "^17.6.0",
-        "vite": "^8.0.12"
+        "eslint-plugin-react-refresh": "^0.4.20",
+        "prettier": "^3.0.0",
+        "typescript": "^5.0.0",
+        "vite": "^6.0.0",
+        "vitest": "^2.0.0"
       }
     },
     "node_modules/@babel/code-frame": {
@@ -205,6 +212,14 @@
         "node": ">=6.0.0"
       }
     },
+    "node_modules/@babel/runtime": {
+      "version": "7.29.7",
+      "resolved": "https://registry.npmjs.org/@babel/runtime/-/runtime-7.29.7.tgz",
+      "integrity": "sha512-Nq8OhGWiZIZGV6hLHoyAKLLcJihP/xFeBMGJoUrxTX2psI8dCifzLhZISFb+VWS3wFMRDmCGw5R+dOySCqPLhw==",
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
     "node_modules/@babel/template": {
       "version": "7.28.6",
       "resolved": "https://registry.npmjs.org/@babel/template/-/template-7.28.6.tgz",
@@ -250,35 +265,420 @@
         "node": ">=6.9.0"
       }
     },
-    "node_modules/@emnapi/core": {
-      "version": "1.10.0",
-      "resolved": "https://registry.npmjs.org/@emnapi/core/-/core-1.10.0.tgz",
-      "integrity": "sha512-yq6OkJ4p82CAfPl0u9mQebQHKPJkY7WrIuk205cTYnYe+k2Z8YBh11FrbRG/H6ihirqcacOgl2BIO8oyMQLeXw==",
+    "node_modules/@esbuild/aix-ppc64": {
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.25.12.tgz",
+      "integrity": "sha512-Hhmwd6CInZ3dwpuGTF8fJG6yoWmsToE+vYgD4nytZVxcu1ulHpUQRAB1UJ8+N1Am3Mz4+xOByoQoSZf4D+CpkA==",
+      "cpu": [
+        "ppc64"
+      ],
       "dev": true,
       "optional": true,
-      "dependencies": {
-        "@emnapi/wasi-threads": "1.2.1",
-        "tslib": "^2.4.0"
+      "os": [
+        "aix"
+      ],
+      "engines": {
+        "node": ">=18"
       }
     },
-    "node_modules/@emnapi/runtime": {
-      "version": "1.10.0",
-      "resolved": "https://registry.npmjs.org/@emnapi/runtime/-/runtime-1.10.0.tgz",
-      "integrity": "sha512-ewvYlk86xUoGI0zQRNq/mC+16R1QeDlKQy21Ki3oSYXNgLb45GV1P6A0M+/s6nyCuNDqe5VpaY84BzXGwVbwFA==",
+    "node_modules/@esbuild/android-arm": {
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.25.12.tgz",
+      "integrity": "sha512-VJ+sKvNA/GE7Ccacc9Cha7bpS8nyzVv0jdVgwNDaR4gDMC/2TTRc33Ip8qrNYUcpkOHUT5OZ0bUcNNVZQ9RLlg==",
+      "cpu": [
+        "arm"
+      ],
       "dev": true,
       "optional": true,
-      "dependencies": {
-        "tslib": "^2.4.0"
+      "os": [
+        "android"
+      ],
+      "engines": {
+        "node": ">=18"
       }
     },
-    "node_modules/@emnapi/wasi-threads": {
-      "version": "1.2.1",
-      "resolved": "https://registry.npmjs.org/@emnapi/wasi-threads/-/wasi-threads-1.2.1.tgz",
-      "integrity": "sha512-uTII7OYF+/Mes/MrcIOYp5yOtSMLBWSIoLPpcgwipoiKbli6k322tcoFsxoIIxPDqW01SQGAgko4EzZi2BNv2w==",
+    "node_modules/@esbuild/android-arm64": {
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-arm64/-/android-arm64-0.25.12.tgz",
+      "integrity": "sha512-6AAmLG7zwD1Z159jCKPvAxZd4y/VTO0VkprYy+3N2FtJ8+BQWFXU+OxARIwA46c5tdD9SsKGZ/1ocqBS/gAKHg==",
+      "cpu": [
+        "arm64"
+      ],
       "dev": true,
       "optional": true,
-      "dependencies": {
-        "tslib": "^2.4.0"
+      "os": [
+        "android"
+      ],
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@esbuild/android-x64": {
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-x64/-/android-x64-0.25.12.tgz",
+      "integrity": "sha512-5jbb+2hhDHx5phYR2By8GTWEzn6I9UqR11Kwf22iKbNpYrsmRB18aX/9ivc5cabcUiAT/wM+YIZ6SG9QO6a8kg==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "optional": true,
+      "os": [
+        "android"
+      ],
+      "engines": {
+        "node": ">=18"
+      }
+    },
+    "node_modules/@esbuild/darwin-arm64": {
+      "version": "0.25.12",
+      "resolved": "https://registry.npmjs.org/@esbuild/darwin-arm64/-/darwin-arm64-0.25.12.tgz",
+      "integrity": "sha512-N3zl+lxHCifgIlcMUP5016ESkeQjLj/959RxxNYIthIg+CQHInujFuXeWbWMgnTo4cp5XVHqFPmpyu9J65C1Yg==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "optional": true,
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+        "@esbuild/linux-mips64el": "0.21.5",
+        "@esbuild/linux-ppc64": "0.21.5",
+        "@esbuild/linux-riscv64": "0.21.5",
+        "@esbuild/linux-s390x": "0.21.5",
+        "@esbuild/linux-x64": "0.21.5",
+        "@esbuild/netbsd-x64": "0.21.5",
+        "@esbuild/openbsd-x64": "0.21.5",
+        "@esbuild/sunos-x64": "0.21.5",
+        "@esbuild/win32-arm64": "0.21.5",
+        "@esbuild/win32-ia32": "0.21.5",
+        "@esbuild/win32-x64": "0.21.5"
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+    },
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+      "resolved": "https://registry.npmjs.org/vite/-/vite-5.4.21.tgz",
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+      "dev": true,
+      "dependencies": {
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+        "postcss": "^8.4.43",
+        "rollup": "^4.20.0"
+      },
+      "bin": {
+        "vite": "bin/vite.js"
+      },
+      "engines": {
+        "node": "^18.0.0 || >=20.0.0"
+      },
+      "funding": {
+        "url": "https://github.com/vitejs/vite?sponsor=1"
+      },
+      "optionalDependencies": {
+        "fsevents": "~2.3.3"
+      },
+      "peerDependencies": {
+        "@types/node": "^18.0.0 || >=20.0.0",
+        "less": "*",
+        "lightningcss": "^1.21.0",
+        "sass": "*",
+        "sass-embedded": "*",
+        "stylus": "*",
+        "sugarss": "*",
+        "terser": "^5.4.0"
+      },
+      "peerDependenciesMeta": {
+        "@types/node": {
+          "optional": true
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+        "less": {
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+        },
+        "lightningcss": {
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+        },
+        "sass": {
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+        "sass-embedded": {
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+        "stylus": {
+          "optional": true
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+        "sugarss": {
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+        "terser": {
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       "version": "1.0.2",
       "resolved": "https://registry.npmjs.org/w3c-hr-time/-/w3c-hr-time-1.0.2.tgz",
@@ -3597,6 +8057,107 @@
         "node": ">= 8"
       }
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+      "resolved": "https://registry.npmjs.org/which-boxed-primitive/-/which-boxed-primitive-1.1.1.tgz",
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+        "is-boolean-object": "^1.2.1",
+        "is-number-object": "^1.1.1",
+        "is-string": "^1.1.1",
+        "is-symbol": "^1.1.1"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
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+        "function.prototype.name": "^1.1.6",
+        "has-tostringtag": "^1.0.2",
+        "is-async-function": "^2.0.0",
+        "is-date-object": "^1.1.0",
+        "is-finalizationregistry": "^1.1.0",
+        "is-generator-function": "^1.0.10",
+        "is-regex": "^1.2.1",
+        "is-weakref": "^1.0.2",
+        "isarray": "^2.0.5",
+        "which-boxed-primitive": "^1.1.0",
+        "which-collection": "^1.0.2",
+        "which-typed-array": "^1.1.16"
+      },
+      "engines": {
+        "node": ">= 0.4"
+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
+    },
+    "node_modules/which-collection": {
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+      "resolved": "https://registry.npmjs.org/which-collection/-/which-collection-1.0.2.tgz",
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+      "funding": {
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+        "for-each": "^0.3.5",
+        "get-proto": "^1.0.1",
+        "gopd": "^1.2.0",
+        "has-tostringtag": "^1.0.2"
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+      },
+      "funding": {
+        "url": "https://github.com/sponsors/ljharb"
+      }
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+    "node_modules/why-is-node-running": {
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+      "resolved": "https://registry.npmjs.org/why-is-node-running/-/why-is-node-running-2.3.0.tgz",
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+      "dev": true,
+      "dependencies": {
+        "siginfo": "^2.0.0",
+        "stackback": "0.0.2"
+      },
+      "bin": {
+        "why-is-node-running": "cli.js"
+      },
+      "engines": {
+        "node": ">=8"
+      }
+    },
     "node_modules/wide-align": {
       "version": "1.1.5",
       "resolved": "https://registry.npmjs.org/wide-align/-/wide-align-1.1.5.tgz",
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+    "node_modules/y-leveldb": {
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+      "resolved": "https://registry.npmjs.org/y-leveldb/-/y-leveldb-0.1.2.tgz",
+      "integrity": "sha512-6ulEn5AXfXJYi89rXPEg2mMHAyyw8+ZfeMMdOtBbV8FJpQ1NOrcgi6DTAcXof0dap84NjHPT2+9d0rb6cFsjEg==",
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+        "lib0": "^0.2.31"
+      },
+      "funding": {
+        "type": "GitHub Sponsors ❤",
+        "url": "https://github.com/sponsors/dmonad"
+      },
+      "peerDependencies": {
+        "yjs": "^13.0.0"
+      }
+    },
+    "node_modules/y-protocols": {
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+        "node": ">=16.0.0",
+        "npm": ">=8.0.0"
+      },
+      "funding": {
+        "type": "GitHub Sponsors ❤",
+        "url": "https://github.com/sponsors/dmonad"
+      },
+      "peerDependencies": {
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+      }
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+        "lodash.debounce": "^4.0.8",
+        "y-protocols": "^1.0.5"
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+        "y-websocket": "bin/server.cjs",
+        "y-websocket-server": "bin/server.cjs"
+      },
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+        "node": ">=16.0.0",
+        "npm": ">=8.0.0"
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+      "funding": {
+        "type": "GitHub Sponsors ❤",
+        "url": "https://github.com/sponsors/dmonad"
+      },
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+        "y-leveldb": "^0.1.0"
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       "dev": true
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+      "resolved": "https://registry.npmjs.org/yjs/-/yjs-13.6.31.tgz",
+      "integrity": "sha512-Eq+5BRfbeGyqGVrTJL3bEcr8gKkxPuyuoHmAwpk52fDb8kOVMrfVSTRPd6yiGgX5Fskb96qCRjzjbRjrL4YEnw==",
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+      },
+      "engines": {
+        "node": ">=16.0.0",
+        "npm": ">=8.0.0"
+      },
+      "funding": {
+        "type": "GitHub Sponsors ❤",
+        "url": "https://github.com/sponsors/dmonad"
+      }
+    },
     "node_modules/yocto-queue": {
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diff --git a/frontend/vite.config.js b/frontend/vite.config.js
index fe264af..16d0302 100644
--- a/frontend/vite.config.js
+++ b/frontend/vite.config.js
@@ -5,7 +5,7 @@ export default defineConfig({
   plugins: [react()],
   server: {
     proxy: {
-      '/api': 'http://localhost:5000',
+      '/api': 'http://localhost:3001',
     },
   },
   preview: {