Files
web-cad/frontend/src/components/CanvasArea.tsx
T

446 lines
18 KiB
TypeScript

import React, { useRef, useEffect, useState } from 'react';
import type { CanvasAreaProps, ViewMode } from '../types/ui.types';
import type { CADElement } from '../types/cad.types';
import type { ToolType } from '../types/cad.types';
import type { UserCursor } from '../crdt';
import { RenderEngine } from '../canvas/RenderEngine';
import { ZoomPanController } from '../canvas/ZoomPanController';
import { InteractionEngine } from '../interaction';
import { SnapEngine } from '../canvas/SnapEngine';
import { SelectionEngine } from '../canvas/SelectionEngine';
import { SpatialIndex } from '../canvas/SpatialIndex';
import { LayerManager } from '../canvas/LayerManager';
import { GroupManager } from '../tools/modification/GroupTool';
const CanvasArea: React.FC<CanvasAreaProps> = ({
cursorPos, viewMode, onViewChange, gridEnabled, orthoEnabled, snapEnabled,
polarEnabled,
activeTool, elements, layers, activeLayerId, onElementCreated, onElementsDeleted, onElementsModified, onCursorMoved, onToolStateChanged,
onToggleGrid, onToggleOrtho, onToggleSnap, onZoomIn, onZoomOut, onZoomFit, onTextEdit, onCommandTrigger, blocks, onBlockDrop, onSelectionChange, selectedTemplate, bgConfig, remoteCursors, zoomCommand,
groups,
}) => {
const canvasRef = useRef<HTMLCanvasElement>(null);
const zoomPanRef = useRef<ZoomPanController | null>(null);
const renderEngineRef = useRef<RenderEngine | null>(null);
const interactionRef = useRef<InteractionEngine | null>(null);
const spatialIndexRef = useRef<SpatialIndex | null>(null);
const layerManagerRef = useRef<LayerManager | null>(null);
useEffect(() => {
const canvas = canvasRef.current;
if (!canvas) return;
const zoomPan = new ZoomPanController(canvas);
const spatialIndex = new SpatialIndex();
const layerManager = new LayerManager();
const renderEngine = new RenderEngine(canvas, zoomPan, spatialIndex, layerManager);
const snapEngine = new SnapEngine();
const selectionEngine = new SelectionEngine(renderEngine, spatialIndex, layerManager);
const interaction = new InteractionEngine(
canvas, zoomPan, renderEngine, snapEngine, selectionEngine, spatialIndex, layerManager,
);
zoomPanRef.current = zoomPan;
renderEngineRef.current = renderEngine;
interactionRef.current = interaction;
spatialIndexRef.current = spatialIndex;
layerManagerRef.current = layerManager;
interaction.setCallbacks({
onElementCreated,
onElementsDeleted,
onElementsModified,
onCursorMoved,
onToolStateChanged,
onTextEdit,
onCommandTrigger,
onSelectionChange,
});
interaction.attach();
return () => {
interaction.detach();
zoomPanRef.current = null;
renderEngineRef.current = null;
interactionRef.current = null;
spatialIndexRef.current = null;
layerManagerRef.current = null;
};
// eslint-disable-next-line react-hooks/exhaustive-deps
}, []);
// Update callbacks when they change (avoids stale closures)
useEffect(() => {
const interaction = interactionRef.current;
if (!interaction) return;
interaction.setCallbacks({
onElementCreated,
onElementsDeleted,
onElementsModified,
onCursorMoved,
onToolStateChanged,
onTextEdit,
onCommandTrigger,
onSelectionChange,
});
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [onElementCreated, onElementsDeleted, onElementsModified, onCursorMoved, onToolStateChanged, onTextEdit, onCommandTrigger, onSelectionChange]);
// Resize canvas to fill container
useEffect(() => {
const canvas = canvasRef.current;
if (!canvas) return;
const container = canvas.parentElement;
if (!container) return;
const resize = () => {
const w = container.clientWidth;
const h = container.clientHeight;
if (w > 0 && h > 0) {
canvas.width = w;
canvas.height = h;
renderEngineRef.current?.render();
}
};
resize();
const ro = new ResizeObserver(resize);
ro.observe(container);
window.addEventListener('resize', resize);
return () => {
ro.disconnect();
window.removeEventListener('resize', resize);
};
}, []);
// Sync elements to interaction engine + spatial index + render
useEffect(() => {
const interaction = interactionRef.current;
const spatialIndex = spatialIndexRef.current;
const renderEngine = renderEngineRef.current;
if (!interaction || !spatialIndex || !renderEngine) return;
interaction.setElements(elements);
spatialIndex.clear();
spatialIndex.bulkInsert(elements);
renderEngine.render();
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [elements]);
// Sync layers to LayerManager + render
useEffect(() => {
const renderEngine = renderEngineRef.current;
const layerManager = layerManagerRef.current;
if (!renderEngine) return;
if (layerManager) {
layerManager.clear();
layers.forEach(l => layerManager.addLayer(l));
}
renderEngine.setLayers(layers);
renderEngine.render();
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [layers]);
// Sync blocks to RenderEngine
useEffect(() => {
const renderEngine = renderEngineRef.current;
if (!renderEngine || !blocks) return;
renderEngine.setBlockDefinitions(blocks);
renderEngine.render();
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [blocks]);
// Sync groups to RenderEngine and InteractionEngine
useEffect(() => {
const renderEngine = renderEngineRef.current;
const interaction = interactionRef.current;
if (!renderEngine) return;
renderEngine.setGroups(groups ?? []);
renderEngine.render();
// InteractionEngine uses GroupManager from App — we pass it via a simple adapter
if (interaction && groups) {
const gm = new GroupManager();
gm.fromJSON(groups);
interaction.setGroupManager(gm);
} else if (interaction) {
interaction.setGroupManager(null);
}
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [groups]);
// Sync active layer to LayerManager
useEffect(() => {
const layerManager = layerManagerRef.current;
if (!layerManager || !activeLayerId) return;
layerManager.setActiveLayer(activeLayerId);
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [activeLayerId, layers]);
// Sync grid/snap/ortho toggles
useEffect(() => {
const renderEngine = renderEngineRef.current;
const interaction = interactionRef.current;
if (!renderEngine || !interaction) return;
renderEngine.setOptions({ showGrid: gridEnabled });
renderEngine.setOptions({ showSnapPoints: snapEnabled });
renderEngine.setOptions({ showOrtho: orthoEnabled });
interaction.setSnapEnabled(snapEnabled);
interaction.setOrthoEnabled(orthoEnabled);
interaction.setPolarEnabled(polarEnabled);
renderEngine.render();
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [gridEnabled, snapEnabled, orthoEnabled, polarEnabled]);
// Sync active tool
useEffect(() => {
const interaction = interactionRef.current;
if (!interaction) return;
interaction.setTool(activeTool as ToolType);
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [activeTool]);
// Sync selected template to interaction engine
useEffect(() => {
const interaction = interactionRef.current;
if (!interaction) return;
interaction.setSelectedTemplate(selectedTemplate ?? null);
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [selectedTemplate]);
// Compute screen positions for remote cursors
const [cursorScreenPositions, setCursorScreenPositions] = useState<Array<{ cursor: UserCursor; sx: number; sy: number }>>([]);
useEffect(() => {
const zoomPan = zoomPanRef.current;
if (!zoomPan || !remoteCursors || remoteCursors.length === 0) {
setCursorScreenPositions([]);
return;
}
const positions = remoteCursors
.filter((c) => c.visible)
.map((cursor) => {
const screen = zoomPan.worldToScreen(cursor.x, cursor.y);
return { cursor, sx: screen.x, sy: screen.y };
});
setCursorScreenPositions(positions);
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [remoteCursors]);
// Re-render cursor overlay when canvas renders (zoom/pan changes)
useEffect(() => {
const renderEngine = renderEngineRef.current;
const zoomPan = zoomPanRef.current;
if (!renderEngine || !zoomPan || !remoteCursors || remoteCursors.length === 0) return;
const origRender = renderEngine.render.bind(renderEngine);
renderEngine.render = () => {
origRender();
const positions = remoteCursors
.filter((c) => c.visible)
.map((cursor) => {
const screen = zoomPan.worldToScreen(cursor.x, cursor.y);
return { cursor, sx: screen.x, sy: screen.y };
});
setCursorScreenPositions(positions);
};
return () => { renderEngine.render = origRender; };
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [remoteCursors]);
const handleZoomIn = () => {
const zoomPan = zoomPanRef.current;
const canvas = canvasRef.current;
if (zoomPan && canvas) {
zoomPan.zoomAt(canvas.width / 2, canvas.height / 2, 1.2);
renderEngineRef.current?.render();
}
onZoomIn();
};
const handleZoomOut = () => {
const zoomPan = zoomPanRef.current;
const canvas = canvasRef.current;
if (zoomPan && canvas) {
zoomPan.zoomAt(canvas.width / 2, canvas.height / 2, 0.8);
renderEngineRef.current?.render();
}
onZoomOut();
};
const handleZoomFit = () => {
const interaction = interactionRef.current;
if (interaction) {
interaction.zoomFit();
}
onZoomFit();
};
// Handle zoom commands from App (ribbon/menu actions)
useEffect(() => {
if (!zoomCommand) return;
const zoomPan = zoomPanRef.current;
const canvas = canvasRef.current;
if (!zoomPan || !canvas) return;
switch (zoomCommand) {
case 'in':
zoomPan.zoomAt(canvas.width / 2, canvas.height / 2, 1.2);
break;
case 'out':
zoomPan.zoomAt(canvas.width / 2, canvas.height / 2, 0.8);
break;
case 'fit':
zoomPan.zoomFit(elements);
break;
case '100':
zoomPan.reset();
break;
}
renderEngineRef.current?.render();
// eslint-disable-next-line react-hooks/exhaustive-deps
}, [zoomCommand]);
return (
<section className="canvas-area" id="canvas-area" aria-label="CAD Zeichenfläche">
<div className="canvas-coords" role="status" aria-live="polite">
<span><span className="canvas-coords-label">X</span><span className="canvas-coords-val" id="coord-x">{cursorPos.x.toFixed(3)}</span></span>
<span><span className="canvas-coords-label">Y</span><span className="canvas-coords-val" id="coord-y">{cursorPos.y.toFixed(3)}</span></span>
<span style={{ color: 'var(--color-text-faint)' }}>m</span>
</div>
<canvas
ref={canvasRef}
className="canvas-svg"
role="img"
aria-label="CAD Zeichenfläche"
onDragOver={(e) => { e.preventDefault(); e.dataTransfer.dropEffect = 'copy'; }}
onDrop={(e) => {
e.preventDefault();
const rect = e.currentTarget.getBoundingClientRect();
const sx = e.clientX - rect.left;
const sy = e.clientY - rect.top;
const zoomPan = zoomPanRef.current;
if (!zoomPan) return;
const world = zoomPan.screenToWorld(sx, sy);
// Project block drop
const blockId = e.dataTransfer.getData('text/block-id');
if (blockId && onBlockDrop) {
onBlockDrop(blockId, world.x, world.y);
return;
}
// Global block drop — parse block_data and create element(s)
const globalBlockData = e.dataTransfer.getData('text/global-block-data');
if (globalBlockData) {
try {
const parsed = JSON.parse(globalBlockData);
if (parsed.type === 'svg' && parsed.svg) {
// SVG block — create a block_instance element
const svgEl: CADElement = {
id: `el_${Date.now()}_${Math.random().toString(36).slice(2, 9)}`,
type: 'block_instance',
layerId: 'layer-0',
x: world.x,
y: world.y,
width: 100,
height: 100,
properties: { blockId: `svg_${Date.now()}`, svgData: parsed.svg, scale: 1 },
};
onElementCreated(svgEl);
} else if (Array.isArray(parsed)) {
// Array of elements — create them with offset
parsed.forEach((el: CADElement, i: number) => {
onElementCreated({
...el,
id: `el_${Date.now()}_${i}`,
x: (el.x ?? 0) + world.x,
y: (el.y ?? 0) + world.y,
});
});
} else if (parsed.type) {
// Single element
onElementCreated({
...parsed,
id: `el_${Date.now()}_${Math.random().toString(36).slice(2, 9)}`,
x: world.x,
y: world.y,
});
}
} catch {
// Invalid block data — ignore
}
}
}}
/>
{cursorScreenPositions.map(({ cursor, sx, sy }) => (
<div
key={cursor.userId}
className="remote-cursor"
style={{
position: 'absolute',
left: `${sx}px`,
top: `${sy}px`,
pointerEvents: 'none',
zIndex: 1000,
}}
>
<div
style={{
width: '12px',
height: '12px',
borderRadius: '50%',
backgroundColor: cursor.color,
border: '2px solid white',
boxShadow: '0 0 4px rgba(0,0,0,0.5)',
}}
/>
<div
style={{
position: 'absolute',
left: '16px',
top: '8px',
backgroundColor: cursor.color,
color: 'white',
padding: '2px 6px',
borderRadius: '4px',
fontSize: '11px',
fontFamily: 'sans-serif',
whiteSpace: 'nowrap',
boxShadow: '0 1px 3px rgba(0,0,0,0.4)',
}}
>
{cursor.userName}
</div>
</div>
))}
<div className="canvas-toolbar" role="toolbar" aria-label="Canvas-Werkzeuge">
<button className="canvas-toolbar-btn" title="Herauszoomen (-)" aria-label="Herauszoomen" onClick={handleZoomOut}>
<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><circle cx="11" cy="11" r="8"/><line x1="21" y1="21" x2="16.65" y2="16.65"/><line x1="8" y1="11" x2="14" y2="11"/></svg>
</button>
<span className="canvas-zoom-display" id="zoom-display">100%</span>
<button className="canvas-toolbar-btn" title="Hineinzoomen (+)" aria-label="Hineinzoomen" onClick={handleZoomIn}>
<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><circle cx="11" cy="11" r="8"/><line x1="21" y1="21" x2="16.65" y2="16.65"/><line x1="11" y1="8" x2="11" y2="14"/><line x1="8" y1="11" x2="14" y2="11"/></svg>
</button>
<button className="canvas-toolbar-btn" title="Zoom anpassen (F)" aria-label="Zoom anpassen" onClick={handleZoomFit}>
<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M3 7V5a2 2 0 0 1 2-2h2"/><path d="M17 3h2a2 2 0 0 1 2 2v2"/><path d="M21 17v2a2 2 0 0 1-2 2h-2"/><path d="M7 21H5a2 2 0 0 1-2-2v-2"/><line x1="7" y1="12" x2="17" y2="12"/></svg>
</button>
<div className="canvas-toolbar-divider"></div>
<button className={`canvas-toolbar-btn${gridEnabled ? ' active' : ''}`} title="Grid ein/aus (F7)" aria-label="Grid umschalten" aria-pressed={gridEnabled} onClick={onToggleGrid}>
<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><rect x="3" y="3" width="18" height="18"/><line x1="3" y1="9" x2="21" y2="9"/><line x1="3" y1="15" x2="21" y2="15"/><line x1="9" y1="3" x2="9" y2="21"/><line x1="15" y1="3" x2="15" y2="21"/></svg>
</button>
<button className={`canvas-toolbar-btn${orthoEnabled ? ' active' : ''}`} title="Ortho-Modus (F8)" aria-label="Ortho-Modus umschalten" aria-pressed={orthoEnabled} onClick={onToggleOrtho}>
<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M3 3l18 18M3 21l18-18"/></svg>
</button>
<button className={`canvas-toolbar-btn${snapEnabled ? ' active' : ''}`} title="Snap ein/aus (F3)" aria-label="Snap umschalten" aria-pressed={snapEnabled} onClick={onToggleSnap}>
<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><path d="M12 2v4M12 18v4M2 12h4M18 12h4M5.6 5.6l2.8 2.8M15.6 15.6l2.8 2.8M5.6 18.4l2.8-2.8M15.6 8.4l2.8-2.8"/><circle cx="12" cy="12" r="3"/></svg>
</button>
<div className="canvas-toolbar-divider"></div>
<button className="canvas-toolbar-btn" title="Vorherige Ansicht" aria-label="Vorherige Ansicht">
<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" strokeWidth="2" strokeLinecap="round" strokeLinejoin="round"><polyline points="15 18 9 12 15 6"/></svg>
</button>
</div>
</section>
);
};
export default CanvasArea;