@tldraw/editor/dist-esm/lib/editor/managers/SnapManager/SnapManager.mjs.map

tldraw infinite canvas SDK (editor).

{
  "version": 3,
  "sources": ["../../../../../src/lib/editor/managers/SnapManager/SnapManager.ts"],
  "sourcesContent": ["import { EMPTY_ARRAY, atom, computed } from '@tldraw/state'\nimport { TLFrameShape, TLGroupShape, TLParentId, TLShapeId, isShapeId } from '@tldraw/tlschema'\nimport { Vec, VecLike } from '../../../primitives/Vec'\nimport type { Editor } from '../../Editor'\nimport { BoundsSnaps } from './BoundsSnaps'\nimport { HandleSnaps } from './HandleSnaps'\n\n/** @public */\nexport interface PointsSnapIndicator {\n\tid: string\n\ttype: 'points'\n\tpoints: VecLike[]\n}\n\n/** @public */\nexport interface GapsSnapIndicator {\n\tid: string\n\ttype: 'gaps'\n\tdirection: 'horizontal' | 'vertical'\n\tgaps: Array<{\n\t\tstartEdge: [VecLike, VecLike]\n\t\tendEdge: [VecLike, VecLike]\n\t}>\n}\n\n/** @public */\nexport type SnapIndicator = PointsSnapIndicator | GapsSnapIndicator\n\n/** @public */\nexport interface SnapData {\n\tnudge: Vec\n}\n\n/** @public */\nexport class SnapManager {\n\treadonly shapeBounds: BoundsSnaps\n\treadonly handles: HandleSnaps\n\n\tprivate _snapIndicators = atom<SnapIndicator[] | undefined>('snapLines', undefined)\n\n\tconstructor(public readonly editor: Editor) {\n\t\tthis.shapeBounds = new BoundsSnaps(this)\n\t\tthis.handles = new HandleSnaps(this)\n\t}\n\n\tgetIndicators() {\n\t\treturn this._snapIndicators.get() ?? (EMPTY_ARRAY as SnapIndicator[])\n\t}\n\n\tclearIndicators() {\n\t\tif (this.getIndicators().length) {\n\t\t\tthis._snapIndicators.set(undefined)\n\t\t}\n\t}\n\n\tsetIndicators(indicators: SnapIndicator[]) {\n\t\tthis._snapIndicators.set(indicators)\n\t}\n\n\t@computed getSnapThreshold() {\n\t\treturn 8 / this.editor.getZoomLevel()\n\t}\n\n\t// TODO: make this an incremental derivation\n\t@computed getSnappableShapes(): Set<TLShapeId> {\n\t\tconst { editor } = this\n\t\tconst renderingBounds = editor.getViewportPageBounds()\n\t\tconst selectedShapeIds = editor.getSelectedShapeIds()\n\n\t\tconst snappableShapes: Set<TLShapeId> = new Set()\n\n\t\tconst collectSnappableShapesFromParent = (parentId: TLParentId) => {\n\t\t\tif (isShapeId(parentId)) {\n\t\t\t\tconst parent = editor.getShape(parentId)\n\t\t\t\tif (parent && editor.isShapeOfType<TLFrameShape>(parent, 'frame')) {\n\t\t\t\t\tsnappableShapes.add(parentId)\n\t\t\t\t}\n\t\t\t}\n\t\t\tconst sortedChildIds = editor.getSortedChildIdsForParent(parentId)\n\t\t\tfor (const childId of sortedChildIds) {\n\t\t\t\t// Skip any selected ids\n\t\t\t\tif (selectedShapeIds.includes(childId)) continue\n\t\t\t\tconst childShape = editor.getShape(childId)\n\t\t\t\tif (!childShape) continue\n\t\t\t\tconst util = editor.getShapeUtil(childShape)\n\t\t\t\t// Skip any shapes that don't allow snapping\n\t\t\t\tif (!util.canSnap(childShape)) continue\n\t\t\t\t// Only consider shapes if they're inside of the viewport page bounds\n\t\t\t\tconst pageBounds = editor.getShapePageBounds(childId)\n\t\t\t\tif (!(pageBounds && renderingBounds.includes(pageBounds))) continue\n\t\t\t\t// Snap to children of groups but not group itself\n\t\t\t\tif (editor.isShapeOfType<TLGroupShape>(childShape, 'group')) {\n\t\t\t\t\tcollectSnappableShapesFromParent(childId)\n\t\t\t\t\tcontinue\n\t\t\t\t}\n\t\t\t\tsnappableShapes.add(childId)\n\t\t\t}\n\t\t}\n\n\t\tcollectSnappableShapesFromParent(this.getCurrentCommonAncestor() ?? editor.getCurrentPageId())\n\n\t\treturn snappableShapes\n\t}\n\n\t// This needs to be external from any expensive work\n\t@computed getCurrentCommonAncestor() {\n\t\treturn this.editor.findCommonAncestor(this.editor.getSelectedShapes())\n\t}\n}\n"],
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