tldraw/dist-esm/lib/tools/SelectTool/childStates/Brushing.mjs.map

A tiny little drawing editor.

{
  "version": 3,
  "sources": ["../../../../../src/lib/tools/SelectTool/childStates/Brushing.ts"],
  "sourcesContent": ["import {\n\tBox,\n\tMat,\n\tStateNode,\n\tTLCancelEventInfo,\n\tTLKeyboardEventInfo,\n\tTLPageId,\n\tTLPointerEventInfo,\n\tTLShape,\n\tTLShapeId,\n\tTLTickEventInfo,\n\tVec,\n\tpointInPolygon,\n\tpolygonsIntersect,\n\treact,\n} from '@tldraw/editor'\n\nexport class Brushing extends StateNode {\n\tstatic override id = 'brushing'\n\n\tinfo = {} as TLPointerEventInfo & { target: 'canvas' }\n\n\tinitialSelectedShapeIds: TLShapeId[] = []\n\texcludedShapeIds = new Set<TLShapeId>()\n\tisWrapMode = false\n\n\tviewportDidChange = false\n\tcleanupViewportChangeReactor() {\n\t\tvoid null\n\t} // cleanup function for the viewport reactor\n\n\toverride onEnter(info: TLPointerEventInfo & { target: 'canvas' }) {\n\t\tconst { editor } = this\n\t\tconst altKey = editor.inputs.getAltKey()\n\n\t\tthis.isWrapMode = editor.user.getIsWrapMode()\n\n\t\tthis.viewportDidChange = false\n\n\t\tlet isInitialCheck = true\n\n\t\tthis.cleanupViewportChangeReactor = react('viewport change while brushing', () => {\n\t\t\teditor.getViewportPageBounds() // capture the viewport change\n\t\t\tif (!isInitialCheck && !this.viewportDidChange) {\n\t\t\t\tthis.viewportDidChange = true\n\t\t\t}\n\t\t})\n\n\t\tif (altKey) {\n\t\t\tthis.parent.transition('scribble_brushing', info)\n\t\t\treturn\n\t\t}\n\n\t\tthis.excludedShapeIds = new Set(\n\t\t\teditor\n\t\t\t\t.getCurrentPageShapes()\n\t\t\t\t.filter(\n\t\t\t\t\t(shape) => editor.isShapeOfType(shape, 'group') || editor.isShapeOrAncestorLocked(shape)\n\t\t\t\t)\n\t\t\t\t.map((shape) => shape.id)\n\t\t)\n\n\t\tthis.info = info\n\t\tthis.initialSelectedShapeIds = editor.getSelectedShapeIds().slice()\n\t\tthis.hitTestShapes()\n\t\tisInitialCheck = false\n\t}\n\n\toverride onExit() {\n\t\tthis.initialSelectedShapeIds = []\n\t\tthis.editor.updateInstanceState({ brush: null })\n\n\t\tthis.cleanupViewportChangeReactor()\n\t}\n\n\toverride onTick({ elapsed }: TLTickEventInfo) {\n\t\tconst { editor } = this\n\t\tif (!editor.inputs.getIsDragging() || editor.inputs.getIsPanning()) return\n\t\teditor.edgeScrollManager.updateEdgeScrolling(elapsed)\n\t}\n\n\toverride onPointerMove() {\n\t\tthis.hitTestShapes()\n\t}\n\n\toverride onPointerUp() {\n\t\tthis.complete()\n\t}\n\n\toverride onComplete() {\n\t\tthis.complete()\n\t}\n\n\toverride onCancel(info: TLCancelEventInfo) {\n\t\tthis.editor.setSelectedShapes(this.initialSelectedShapeIds)\n\t\tthis.parent.transition('idle', info)\n\t}\n\n\toverride onKeyDown(info: TLKeyboardEventInfo) {\n\t\tif (this.editor.inputs.getAltKey()) {\n\t\t\tthis.parent.transition('scribble_brushing', info)\n\t\t} else {\n\t\t\tthis.hitTestShapes()\n\t\t}\n\t}\n\n\toverride onKeyUp() {\n\t\tthis.hitTestShapes()\n\t}\n\n\tprivate complete() {\n\t\tthis.hitTestShapes()\n\t\tthis.parent.transition('idle')\n\t}\n\n\tprivate hitTestShapes() {\n\t\tconst { editor, excludedShapeIds, isWrapMode } = this\n\t\tconst originPagePoint = editor.inputs.getOriginPagePoint()\n\t\tconst currentPagePoint = editor.inputs.getCurrentPagePoint()\n\t\tconst shiftKey = editor.inputs.getShiftKey()\n\t\tconst ctrlKey = editor.inputs.getCtrlKey()\n\n\t\t// We'll be collecting shape ids of selected shapes; if we're holding shift key, we start from our initial shapes\n\t\tconst results = new Set(shiftKey ? this.initialSelectedShapeIds : [])\n\n\t\t// In wrap mode, we need to completely enclose a shape to select it\n\t\tconst isWrapping = isWrapMode ? !ctrlKey : ctrlKey\n\n\t\t// Set the brush to contain the current and origin points\n\t\tconst brush = Box.FromPoints([originPagePoint, currentPagePoint])\n\n\t\t// We'll be testing the corners of the brush against the shapes\n\t\tconst { corners } = brush\n\n\t\tlet A: Vec,\n\t\t\tB: Vec,\n\t\t\tshape: TLShape,\n\t\t\tpageBounds: Box | undefined,\n\t\t\tpageTransform: Mat | undefined,\n\t\t\tlocalCorners: Vec[]\n\n\t\t// Some notes on optimization. We could easily cache all of the shape positions at\n\t\t// the start of the interaction and then do very fast checks against them, but that\n\t\t// would mean changes introduced by other collaborators wouldn't be reflected\u2014a user\n\t\t// could select a shape by selecting where it _used_ to be.\n\n\t\t// We still want to avoid hit tests as much as possible, however, so we test only the\n\t\t// shapes that are on screen UNLESS: the user has scrolled their viewpor; or the user\n\t\t// is dragging outside of the screen (e.g. in a window). In those cases, we need to\n\t\t// test all shapes.\n\n\t\t// On a page with ~5000 shapes, on-screen hit tests are about 2x faster than\n\t\t// testing all shapes.\n\n\t\tconst brushBoxIsInsideViewport = editor.getViewportPageBounds().contains(brush)\n\t\tconst currentPageId = editor.getCurrentPageId()\n\n\t\t// Use spatial index to filter candidates\n\t\tconst candidateIds = editor.getShapeIdsInsideBounds(brush)\n\n\t\t// Early return if no candidates - avoid expensive getCurrentPageShapesSorted()\n\t\t// But still update brush visual and selection\n\t\tif (candidateIds.size === 0) {\n\t\t\tconst currentBrush = editor.getInstanceState().brush\n\t\t\tif (!currentBrush || !brush.equals(currentBrush)) {\n\t\t\t\teditor.updateInstanceState({ brush: { ...brush.toJson() } })\n\t\t\t}\n\n\t\t\tconst current = editor.getSelectedShapeIds()\n\t\t\tif (current.length !== results.size || current.some((id) => !results.has(id))) {\n\t\t\t\teditor.setSelectedShapes(Array.from(results))\n\t\t\t}\n\t\t\treturn\n\t\t}\n\n\t\tconst allShapes =\n\t\t\tbrushBoxIsInsideViewport && !this.viewportDidChange\n\t\t\t\t? editor.getCurrentPageRenderingShapesSorted()\n\t\t\t\t: editor.getCurrentPageShapesSorted()\n\t\tconst shapesToHitTest = allShapes.filter((shape) => candidateIds.has(shape.id))\n\n\t\ttestAllShapes: for (let i = 0, n = shapesToHitTest.length; i < n; i++) {\n\t\t\tshape = shapesToHitTest[i]\n\t\t\tif (excludedShapeIds.has(shape.id) || results.has(shape.id)) continue testAllShapes\n\n\t\t\tpageBounds = editor.getShapePageBounds(shape)\n\t\t\tif (!pageBounds) continue testAllShapes\n\n\t\t\t// If the brush fully wraps a shape, it's almost certainly a hit\n\t\t\tif (brush.contains(pageBounds)) {\n\t\t\t\tthis.handleHit(shape, currentPagePoint, currentPageId, results, corners)\n\t\t\t\tcontinue testAllShapes\n\t\t\t}\n\n\t\t\t// If we're in wrap mode and the brush did not fully encloses the shape, it's a miss\n\t\t\t// We also skip frames unless we've completely selected the frame.\n\t\t\tif (isWrapping || editor.isShapeOfType(shape, 'frame')) {\n\t\t\t\tcontinue testAllShapes\n\t\t\t}\n\n\t\t\t// If the brush collides the page bounds, then do hit tests against\n\t\t\t// each of the brush's four sides.\n\t\t\tif (brush.collides(pageBounds)) {\n\t\t\t\t// Shapes expect to hit test line segments in their own coordinate system,\n\t\t\t\t// so we first need to get the brush corners in the shape's local space.\n\t\t\t\tpageTransform = editor.getShapePageTransform(shape)\n\t\t\t\tif (!pageTransform) continue testAllShapes\n\t\t\t\tlocalCorners = pageTransform.clone().invert().applyToPoints(corners)\n\t\t\t\t// See if any of the edges intersect the shape's geometry\n\t\t\t\tconst geometry = editor.getShapeGeometry(shape)\n\t\t\t\thitTestBrushEdges: for (let i = 0; i < 4; i++) {\n\t\t\t\t\tA = localCorners[i]\n\t\t\t\t\tB = localCorners[(i + 1) % 4]\n\t\t\t\t\tif (geometry.hitTestLineSegment(A, B, 0)) {\n\t\t\t\t\t\tthis.handleHit(shape, currentPagePoint, currentPageId, results, corners)\n\t\t\t\t\t\tbreak hitTestBrushEdges\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t}\n\t\t}\n\n\t\tconst currentBrush = editor.getInstanceState().brush\n\t\tif (!currentBrush || !brush.equals(currentBrush)) {\n\t\t\teditor.updateInstanceState({ brush: { ...brush.toJson() } })\n\t\t}\n\n\t\tconst current = editor.getSelectedShapeIds()\n\t\tif (current.length !== results.size || current.some((id) => !results.has(id))) {\n\t\t\teditor.setSelectedShapes(Array.from(results))\n\t\t}\n\t}\n\n\toverride onInterrupt() {\n\t\tthis.editor.updateInstanceState({ brush: null })\n\t}\n\n\tprivate handleHit(\n\t\tshape: TLShape,\n\t\tcurrentPagePoint: Vec,\n\t\tcurrentPageId: TLPageId,\n\t\tresults: Set<TLShapeId>,\n\t\tcorners: Vec[]\n\t) {\n\t\tif (shape.parentId === currentPageId) {\n\t\t\tresults.add(shape.id)\n\t\t\treturn\n\t\t}\n\n\t\t// Find the outermost selectable shape, check to see if it has a\n\t\t// page mask; and if so, check to see if the brush intersects it\n\t\tconst selectedShape = this.editor.getOutermostSelectableShape(shape)\n\t\tconst pageMask = this.editor.getShapeMask(selectedShape.id)\n\t\tif (\n\t\t\tpageMask &&\n\t\t\t!polygonsIntersect(pageMask, corners) &&\n\t\t\t!pointInPolygon(currentPagePoint, pageMask)\n\t\t) {\n\t\t\treturn\n\t\t}\n\t\tresults.add(selectedShape.id)\n\t}\n}\n"],
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  "names": ["currentBrush", "current", "shape", "i"]
}