{
  "version": 3,
  "sources": ["../../../../src/lib/components/default-components/CanvasShapeIndicators.tsx"],
  "sourcesContent": ["import { useComputed, useQuickReactor } from '@tldraw/state-react'\nimport { createComputedCache } from '@tldraw/store'\nimport { TLShape, TLShapeId } from '@tldraw/tlschema'\nimport { dedupe } from '@tldraw/utils'\nimport { memo, useEffect, useRef } from 'react'\nimport { Editor } from '../../editor/Editor'\nimport { TLIndicatorPath } from '../../editor/shapes/ShapeUtil'\nimport { useEditor } from '../../hooks/useEditor'\nimport { useIsDarkMode } from '../../hooks/useIsDarkMode'\nimport { useActivePeerIds$ } from '../../hooks/usePeerIds'\n\ninterface CollaboratorIndicatorData {\n\tcolor: string\n\tshapeIds: TLShapeId[]\n}\n\ninterface RenderData {\n\tidsToDisplay: Set<TLShapeId>\n\trenderingShapeIds: Set<TLShapeId>\n\thintingShapeIds: TLShapeId[]\n\tcollaboratorIndicators: CollaboratorIndicatorData[]\n}\n\nfunction setsEqual<T>(a: Set<T>, b: Set<T>): boolean {\n\tif (a.size !== b.size) return false\n\tfor (const item of a) {\n\t\tif (!b.has(item)) return false\n\t}\n\treturn true\n}\n\nfunction arraysEqual<T>(a: readonly T[], b: readonly T[]): boolean {\n\tif (a.length !== b.length) return false\n\tfor (let i = 0; i < a.length; i++) {\n\t\tif (a[i] !== b[i]) return false\n\t}\n\treturn true\n}\n\nfunction collaboratorIndicatorsEqual(\n\ta: CollaboratorIndicatorData[],\n\tb: CollaboratorIndicatorData[]\n): boolean {\n\tif (a.length !== b.length) return false\n\tfor (let i = 0; i < a.length; i++) {\n\t\tif (a[i].color !== b[i].color) return false\n\t\tif (!arraysEqual(a[i].shapeIds, b[i].shapeIds)) return false\n\t}\n\treturn true\n}\n\nfunction renderDataEqual(a: RenderData, b: RenderData): boolean {\n\treturn (\n\t\tsetsEqual(a.idsToDisplay, b.idsToDisplay) &&\n\t\tsetsEqual(a.renderingShapeIds, b.renderingShapeIds) &&\n\t\tarraysEqual(a.hintingShapeIds, b.hintingShapeIds) &&\n\t\tcollaboratorIndicatorsEqual(a.collaboratorIndicators, b.collaboratorIndicators)\n\t)\n}\n\nconst indicatorPathCache = createComputedCache(\n\t'indicatorPath',\n\t(editor: Editor, shape: TLShape) => {\n\t\tconst util = editor.getShapeUtil(shape)\n\t\treturn util.getIndicatorPath(shape)\n\t}\n)\n\nconst getIndicatorPath = (editor: Editor, shape: TLShape) => {\n\treturn indicatorPathCache.get(editor, shape.id)\n}\n\nfunction renderShapeIndicator(\n\tctx: CanvasRenderingContext2D,\n\teditor: Editor,\n\tshapeId: TLShapeId,\n\trenderingShapeIds: Set<TLShapeId>\n): boolean {\n\tif (!renderingShapeIds.has(shapeId)) return false\n\n\tconst shape = editor.getShape(shapeId)\n\tif (!shape || shape.isLocked) return false\n\n\tconst pageTransform = editor.getShapePageTransform(shape)\n\tif (!pageTransform) return false\n\n\tconst indicatorPath = getIndicatorPath(editor, shape)\n\tif (!indicatorPath) return false\n\n\tctx.save()\n\tctx.transform(\n\t\tpageTransform.a,\n\t\tpageTransform.b,\n\t\tpageTransform.c,\n\t\tpageTransform.d,\n\t\tpageTransform.e,\n\t\tpageTransform.f\n\t)\n\trenderIndicatorPath(ctx, indicatorPath)\n\tctx.restore()\n\n\treturn true\n}\n\nfunction renderIndicatorPath(ctx: CanvasRenderingContext2D, indicatorPath: TLIndicatorPath) {\n\tif (indicatorPath instanceof Path2D) {\n\t\tctx.stroke(indicatorPath)\n\t} else {\n\t\tconst { path, clipPath, additionalPaths } = indicatorPath\n\n\t\tif (clipPath) {\n\t\t\tctx.save()\n\t\t\tctx.clip(clipPath, 'evenodd')\n\t\t\tctx.stroke(path)\n\t\t\tctx.restore()\n\t\t} else {\n\t\t\tctx.stroke(path)\n\t\t}\n\n\t\tif (additionalPaths) {\n\t\t\tfor (const additionalPath of additionalPaths) {\n\t\t\t\tctx.stroke(additionalPath)\n\t\t\t}\n\t\t}\n\t}\n}\n\n/** @internal @react */\nexport const CanvasShapeIndicators = memo(function CanvasShapeIndicators() {\n\tconst editor = useEditor()\n\tconst canvasRef = useRef<HTMLCanvasElement>(null)\n\n\t// Cache the selected color to avoid getComputedStyle on every render\n\tconst rSelectedColor = useRef<string | null>(null)\n\tconst isDarkMode = useIsDarkMode()\n\n\tuseEffect(() => {\n\t\tconst timer = editor.timers.setTimeout(() => {\n\t\t\trSelectedColor.current = null\n\t\t}, 0)\n\t\treturn () => clearTimeout(timer)\n\t}, [isDarkMode, editor])\n\n\t// Get active peer IDs (already handles time-based state transitions)\n\tconst activePeerIds$ = useActivePeerIds$()\n\n\tconst $renderData = useComputed(\n\t\t'indicator render data',\n\t\t() => {\n\t\t\tconst renderingShapeIds = new Set(editor.getRenderingShapes().map((s) => s.id))\n\n\t\t\t// Compute ids to display for selected/hovered shapes\n\t\t\tconst idsToDisplay = new Set<TLShapeId>()\n\t\t\tconst instanceState = editor.getInstanceState()\n\t\t\tconst isChangingStyle = instanceState.isChangingStyle\n\t\t\tconst isIdleOrEditing = editor.isInAny('select.idle', 'select.editing_shape')\n\t\t\tconst isInSelectState = editor.isInAny(\n\t\t\t\t'select.brushing',\n\t\t\t\t'select.scribble_brushing',\n\t\t\t\t'select.pointing_shape',\n\t\t\t\t'select.pointing_selection',\n\t\t\t\t'select.pointing_handle'\n\t\t\t)\n\n\t\t\tif (!isChangingStyle && (isIdleOrEditing || isInSelectState)) {\n\t\t\t\tfor (const id of editor.getSelectedShapeIds()) {\n\t\t\t\t\tidsToDisplay.add(id)\n\t\t\t\t}\n\t\t\t\tif (isIdleOrEditing && instanceState.isHoveringCanvas && !instanceState.isCoarsePointer) {\n\t\t\t\t\tconst hovered = editor.getHoveredShapeId()\n\t\t\t\t\tif (hovered) idsToDisplay.add(hovered)\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Compute hinting shape ids\n\t\t\tconst hintingShapeIds = dedupe(editor.getHintingShapeIds())\n\n\t\t\t// Compute collaborator indicators\n\t\t\tconst collaboratorIndicators: CollaboratorIndicatorData[] = []\n\t\t\tconst currentPageId = editor.getCurrentPageId()\n\t\t\tconst activePeerIds = activePeerIds$.get()\n\n\t\t\tconst collaborators = editor.getCollaborators()\n\t\t\tfor (const peerId of activePeerIds.values()) {\n\t\t\t\t// Skip collaborators on different pages\n\t\t\t\tconst presence = collaborators.find((c) => c.userId === peerId)\n\t\t\t\tif (!presence || presence.currentPageId !== currentPageId) continue\n\n\t\t\t\t// Filter to shapes that are visible and on the current rendering set\n\t\t\t\tconst visibleShapeIds = presence.selectedShapeIds.filter(\n\t\t\t\t\t(id) => renderingShapeIds.has(id) && !editor.isShapeHidden(id)\n\t\t\t\t)\n\n\t\t\t\tif (visibleShapeIds.length > 0) {\n\t\t\t\t\tcollaboratorIndicators.push({\n\t\t\t\t\t\tcolor: presence.color,\n\t\t\t\t\t\tshapeIds: visibleShapeIds,\n\t\t\t\t\t})\n\t\t\t\t}\n\t\t\t}\n\n\t\t\treturn {\n\t\t\t\tidsToDisplay,\n\t\t\t\trenderingShapeIds,\n\t\t\t\thintingShapeIds,\n\t\t\t\tcollaboratorIndicators,\n\t\t\t}\n\t\t},\n\t\t{ isEqual: renderDataEqual },\n\t\t[editor, activePeerIds$]\n\t)\n\n\tuseQuickReactor(\n\t\t'canvas indicators render',\n\t\t() => {\n\t\t\tconst canvas = canvasRef.current\n\t\t\tif (!canvas) return\n\n\t\t\tconst ctx = canvas.getContext('2d')\n\t\t\tif (!ctx) return\n\n\t\t\tconst { idsToDisplay, renderingShapeIds, hintingShapeIds, collaboratorIndicators } =\n\t\t\t\t$renderData.get()\n\n\t\t\tconst { w, h } = editor.getViewportScreenBounds()\n\t\t\tconst dpr = window.devicePixelRatio || 1\n\t\t\tconst { x: cx, y: cy, z: zoom } = editor.getCamera()\n\n\t\t\tconst canvasWidth = Math.ceil(w * dpr)\n\t\t\tconst canvasHeight = Math.ceil(h * dpr)\n\n\t\t\tif (canvas.width !== canvasWidth || canvas.height !== canvasHeight) {\n\t\t\t\tcanvas.width = canvasWidth\n\t\t\t\tcanvas.height = canvasHeight\n\t\t\t\tcanvas.style.width = `${w}px`\n\t\t\t\tcanvas.style.height = `${h}px`\n\t\t\t}\n\n\t\t\tctx.resetTransform()\n\t\t\tctx.clearRect(0, 0, canvas.width, canvas.height)\n\n\t\t\tctx.scale(dpr, dpr)\n\t\t\tctx.scale(zoom, zoom)\n\t\t\tctx.translate(cx, cy)\n\n\t\t\tctx.lineCap = 'round'\n\t\t\tctx.lineJoin = 'round'\n\n\t\t\t// Draw collaborator indicators first (underneath local indicators)\n\t\t\t// Use 0.5 opacity to match the original SVG-based collaborator indicators\n\t\t\tctx.lineWidth = 1.5 / zoom\n\t\t\tfor (const collaborator of collaboratorIndicators) {\n\t\t\t\tctx.strokeStyle = collaborator.color\n\t\t\t\tctx.globalAlpha = 0.7\n\t\t\t\tfor (const shapeId of collaborator.shapeIds) {\n\t\t\t\t\trenderShapeIndicator(ctx, editor, shapeId, renderingShapeIds)\n\t\t\t\t}\n\t\t\t}\n\n\t\t\t// Reset alpha for local indicators\n\t\t\tctx.globalAlpha = 1.0\n\n\t\t\t// Use cached color, only call getComputedStyle when cache is empty\n\t\t\tif (!rSelectedColor.current) {\n\t\t\t\trSelectedColor.current = getComputedStyle(canvas).getPropertyValue('--tl-color-selected')\n\t\t\t}\n\n\t\t\tctx.strokeStyle = rSelectedColor.current\n\n\t\t\t// Draw selected/hovered indicators (1.5px stroke)\n\t\t\tctx.lineWidth = 1.5 / zoom\n\t\t\tfor (const shapeId of idsToDisplay) {\n\t\t\t\trenderShapeIndicator(ctx, editor, shapeId, renderingShapeIds)\n\t\t\t}\n\n\t\t\t// Draw hinted indicators with a thicker stroke (2.5px)\n\t\t\tif (hintingShapeIds.length > 0) {\n\t\t\t\tctx.lineWidth = 2.5 / zoom\n\t\t\t\tfor (const shapeId of hintingShapeIds) {\n\t\t\t\t\trenderShapeIndicator(ctx, editor, shapeId, renderingShapeIds)\n\t\t\t\t}\n\t\t\t}\n\t\t},\n\t\t[editor, $renderData]\n\t)\n\n\treturn <canvas ref={canvasRef} className=\"tl-canvas-indicators\" />\n})\n"],
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  "names": ["CanvasShapeIndicators"]
}