tldraw/dist-esm/lib/ui/components/Minimap/MinimapManager.mjs.map

A tiny little drawing editor.

{
  "version": 3,
  "sources": ["../../../../../src/lib/ui/components/Minimap/MinimapManager.ts"],
  "sourcesContent": ["import {\n\tBox,\n\tComputedCache,\n\tEditor,\n\tTLShape,\n\tVec,\n\tatom,\n\tbind,\n\tclamp,\n\tcomputed,\n\treact,\n\ttlenv,\n\tuniqueId,\n} from '@tldraw/editor'\nimport { getRgba } from './getRgba'\nimport { BufferStuff, appendVertices, setupWebGl } from './minimap-webgl-setup'\nimport { pie, rectangle, roundedRectangle } from './minimap-webgl-shapes'\n\nexport class MinimapManager {\n\tdisposables = [] as (() => void)[]\n\n\t@bind\n\tclose() {\n\t\treturn this.disposables.forEach((d) => d())\n\t}\n\tgl: ReturnType<typeof setupWebGl>\n\tshapeGeometryCache: ComputedCache<Float32Array | null, TLShape>\n\tconstructor(\n\t\tpublic editor: Editor,\n\t\tpublic readonly elem: HTMLCanvasElement,\n\t\tpublic readonly container: HTMLElement\n\t) {\n\t\tthis.gl = setupWebGl(elem)\n\t\tthis.shapeGeometryCache = editor.store.createComputedCache('webgl-geometry', (r: TLShape) => {\n\t\t\tconst bounds = editor.getShapeMaskedPageBounds(r.id)\n\t\t\tif (!bounds) return null\n\t\t\tconst arr = new Float32Array(12)\n\t\t\trectangle(arr, 0, bounds.x, bounds.y, bounds.w, bounds.h)\n\t\t\treturn arr\n\t\t})\n\t\tthis.colors = this._getColors()\n\t\tthis.disposables.push(this._listenForCanvasResize(), react('minimap render', this.render))\n\t}\n\n\tprivate _getColors() {\n\t\tconst style = getComputedStyle(this.editor.getContainer())\n\n\t\treturn {\n\t\t\tshapeFill: getRgba(style.getPropertyValue('--tl-color-text-3').trim()),\n\t\t\tselectFill: getRgba(style.getPropertyValue('--tl-color-selected').trim()),\n\t\t\tviewportFill: getRgba(style.getPropertyValue('--tl-color-muted-1').trim()),\n\t\t\tbackground: getRgba(style.getPropertyValue('--tl-color-low').trim()),\n\t\t}\n\t}\n\n\tprivate colors: ReturnType<MinimapManager['_getColors']>\n\t// this should be called after dark/light mode changes have propagated to the dom\n\tupdateColors() {\n\t\tthis.colors = this._getColors()\n\t}\n\n\treadonly id = uniqueId()\n\t@computed\n\tgetDpr() {\n\t\treturn this.editor.getInstanceState().devicePixelRatio\n\t}\n\n\t@computed\n\tgetContentPageBounds() {\n\t\tconst viewportPageBounds = this.editor.getViewportPageBounds()\n\t\tconst commonShapeBounds = this.editor.getCurrentPageBounds()\n\t\treturn commonShapeBounds\n\t\t\t? Box.Expand(commonShapeBounds, viewportPageBounds)\n\t\t\t: viewportPageBounds\n\t}\n\n\t@computed\n\tgetContentScreenBounds() {\n\t\tconst contentPageBounds = this.getContentPageBounds()\n\t\tconst topLeft = this.editor.pageToScreen(contentPageBounds.point)\n\t\tconst bottomRight = this.editor.pageToScreen(\n\t\t\tnew Vec(contentPageBounds.maxX, contentPageBounds.maxY)\n\t\t)\n\t\treturn new Box(topLeft.x, topLeft.y, bottomRight.x - topLeft.x, bottomRight.y - topLeft.y)\n\t}\n\n\tprivate _getCanvasBoundingRect() {\n\t\tconst { x, y, width, height } = this.elem.getBoundingClientRect()\n\t\treturn new Box(x, y, width, height)\n\t}\n\n\tprivate readonly canvasBoundingClientRect = atom('canvasBoundingClientRect', new Box())\n\n\tgetCanvasScreenBounds() {\n\t\treturn this.canvasBoundingClientRect.get()\n\t}\n\n\tprivate _listenForCanvasResize() {\n\t\tconst observer = new ResizeObserver(() => {\n\t\t\tconst rect = this._getCanvasBoundingRect()\n\t\t\tthis.canvasBoundingClientRect.set(rect)\n\t\t})\n\t\tobserver.observe(this.elem)\n\t\tobserver.observe(this.container)\n\t\treturn () => observer.disconnect()\n\t}\n\n\t@computed\n\tgetCanvasSize() {\n\t\tconst rect = this.canvasBoundingClientRect.get()\n\t\tconst dpr = this.getDpr()\n\t\treturn new Vec(rect.width * dpr, rect.height * dpr)\n\t}\n\n\t@computed\n\tgetCanvasClientPosition() {\n\t\treturn this.canvasBoundingClientRect.get().point\n\t}\n\n\toriginPagePoint = new Vec()\n\toriginPageCenter = new Vec()\n\n\tisInViewport = false\n\n\t/** Get the canvas's true bounds converted to page bounds. */\n\t@computed getCanvasPageBounds() {\n\t\tconst canvasScreenBounds = this.getCanvasScreenBounds()\n\t\tconst contentPageBounds = this.getContentPageBounds()\n\n\t\tconst aspectRatio = canvasScreenBounds.width / canvasScreenBounds.height\n\n\t\tlet targetWidth = contentPageBounds.width\n\t\tlet targetHeight = targetWidth / aspectRatio\n\t\tif (targetHeight < contentPageBounds.height) {\n\t\t\ttargetHeight = contentPageBounds.height\n\t\t\ttargetWidth = targetHeight * aspectRatio\n\t\t}\n\n\t\tconst box = new Box(0, 0, targetWidth, targetHeight)\n\t\tbox.center = contentPageBounds.center\n\t\treturn box\n\t}\n\n\t@computed getZoom() {\n\t\treturn this.getCanvasPageBounds().width / this.getCanvasScreenBounds().width\n\t}\n\n\t@computed getCanvasPageBoundsArray() {\n\t\tconst { x, y, w, h } = this.getCanvasPageBounds()\n\t\treturn new Float32Array([x, y, w, h])\n\t}\n\n\tgetMinimapPagePoint(clientX: number, clientY: number) {\n\t\tconst canvasPageBounds = this.getCanvasPageBounds()\n\t\tconst canvasScreenBounds = this.getCanvasScreenBounds()\n\n\t\t// first offset the canvas position\n\t\tlet x = clientX - canvasScreenBounds.x\n\t\tlet y = clientY - canvasScreenBounds.y\n\n\t\t// then multiply by the ratio between the page and screen bounds\n\t\tx *= canvasPageBounds.width / canvasScreenBounds.width\n\t\ty *= canvasPageBounds.height / canvasScreenBounds.height\n\n\t\t// then add the canvas page bounds' offset\n\t\tx += canvasPageBounds.minX\n\t\ty += canvasPageBounds.minY\n\n\t\treturn new Vec(x, y, 1)\n\t}\n\n\tminimapScreenPointToPagePoint(x: number, y: number, shiftKey = false, clampToBounds = false) {\n\t\tconst { editor } = this\n\t\tconst vpPageBounds = editor.getViewportPageBounds()\n\n\t\tlet { x: px, y: py } = this.getMinimapPagePoint(x, y)\n\n\t\tif (clampToBounds) {\n\t\t\tconst shapesPageBounds = this.editor.getCurrentPageBounds() ?? new Box()\n\n\t\t\tconst minX = shapesPageBounds.minX - vpPageBounds.width / 2\n\t\t\tconst maxX = shapesPageBounds.maxX + vpPageBounds.width / 2\n\t\t\tconst minY = shapesPageBounds.minY - vpPageBounds.height / 2\n\t\t\tconst maxY = shapesPageBounds.maxY + vpPageBounds.height / 2\n\n\t\t\tconst lx = Math.max(0, minX + vpPageBounds.width - px)\n\t\t\tconst rx = Math.max(0, -(maxX - vpPageBounds.width - px))\n\t\t\tconst ly = Math.max(0, minY + vpPageBounds.height - py)\n\t\t\tconst ry = Math.max(0, -(maxY - vpPageBounds.height - py))\n\n\t\t\tpx += (lx - rx) / 2\n\t\t\tpy += (ly - ry) / 2\n\n\t\t\tpx = clamp(px, minX, maxX)\n\t\t\tpy = clamp(py, minY, maxY)\n\t\t}\n\n\t\tif (shiftKey) {\n\t\t\tconst { originPagePoint } = this\n\t\t\tconst dx = Math.abs(px - originPagePoint.x)\n\t\t\tconst dy = Math.abs(py - originPagePoint.y)\n\t\t\tif (dx > dy) {\n\t\t\t\tpy = originPagePoint.y\n\t\t\t} else {\n\t\t\t\tpx = originPagePoint.x\n\t\t\t}\n\t\t}\n\n\t\treturn new Vec(px, py)\n\t}\n\n\t@bind\n\trender() {\n\t\t// make sure we update when dark mode switches\n\t\tconst context = this.gl.context\n\t\tconst canvasSize = this.getCanvasSize()\n\n\t\tthis.gl.setCanvasPageBounds(this.getCanvasPageBoundsArray())\n\n\t\tthis.elem.width = canvasSize.x\n\t\tthis.elem.height = canvasSize.y\n\t\tcontext.viewport(0, 0, canvasSize.x, canvasSize.y)\n\n\t\t// this affects which color transparent shapes are blended with\n\t\t// during rendering. If we were to invert this any shapes narrower\n\t\t// than 1 px in screen space would have much lower contrast. e.g.\n\t\t// draw shapes on a large canvas.\n\t\tcontext.clearColor(\n\t\t\tthis.colors.background[0],\n\t\t\tthis.colors.background[1],\n\t\t\tthis.colors.background[2],\n\t\t\t1\n\t\t)\n\n\t\tcontext.clear(context.COLOR_BUFFER_BIT)\n\n\t\tconst selectedShapes = new Set(this.editor.getSelectedShapeIds())\n\n\t\tconst colors = this.colors\n\t\tlet selectedShapeOffset = 0\n\t\tlet unselectedShapeOffset = 0\n\n\t\tconst ids = this.editor.getCurrentPageShapeIdsSorted()\n\n\t\tfor (let i = 0, len = ids.length; i < len; i++) {\n\t\t\tconst shapeId = ids[i]\n\t\t\tconst geometry = this.shapeGeometryCache.get(shapeId)\n\t\t\tif (!geometry) continue\n\n\t\t\tconst len = geometry.length\n\n\t\t\tconst shape = this.editor.getShape(shapeId)\n\t\t\tif (shape) {\n\t\t\t\tconst shapeUtil = this.editor.getShapeUtil(shape.type)\n\t\t\t\tif (shapeUtil.hideInMinimap?.(shape)) continue\n\t\t\t}\n\n\t\t\tif (selectedShapes.has(shapeId)) {\n\t\t\t\tappendVertices(this.gl.selectedShapes, selectedShapeOffset, geometry)\n\t\t\t\tselectedShapeOffset += len\n\t\t\t} else {\n\t\t\t\tappendVertices(this.gl.unselectedShapes, unselectedShapeOffset, geometry)\n\t\t\t\tunselectedShapeOffset += len\n\t\t\t}\n\t\t}\n\n\t\tthis.drawShapes(this.gl.unselectedShapes, unselectedShapeOffset, colors.shapeFill)\n\t\tthis.drawShapes(this.gl.selectedShapes, selectedShapeOffset, colors.selectFill)\n\n\t\tthis.drawViewport()\n\t\tthis.drawCollaborators()\n\t}\n\n\tprivate drawShapes(stuff: BufferStuff, len: number, color: Float32Array) {\n\t\tthis.gl.prepareTriangles(stuff, len)\n\t\tthis.gl.setFillColor(color)\n\t\tthis.gl.drawTriangles(len)\n\t}\n\n\tprivate drawViewport() {\n\t\tconst viewport = this.editor.getViewportPageBounds()\n\t\tconst len = roundedRectangle(this.gl.viewport.vertices, viewport, 4 * this.getZoom())\n\n\t\tthis.gl.prepareTriangles(this.gl.viewport, len)\n\t\tthis.gl.setFillColor(this.colors.viewportFill)\n\t\tthis.gl.drawTrianglesTransparently(len)\n\t\tif (tlenv.isSafari) {\n\t\t\tthis.gl.drawTrianglesTransparently(len)\n\t\t\tthis.gl.drawTrianglesTransparently(len)\n\t\t\tthis.gl.drawTrianglesTransparently(len)\n\t\t}\n\t}\n\n\tdrawCollaborators() {\n\t\tconst collaborators = this.editor.getCollaboratorsOnCurrentPage()\n\t\tif (!collaborators.length) return\n\n\t\t// just draw a little circle for each collaborator\n\t\tconst numSegmentsPerCircle = 20\n\t\tconst dataSizePerCircle = numSegmentsPerCircle * 6\n\t\tconst totalSize = dataSizePerCircle * collaborators.length\n\n\t\t// expand vertex array if needed\n\t\tif (this.gl.collaborators.vertices.length < totalSize) {\n\t\t\tthis.gl.collaborators.vertices = new Float32Array(totalSize)\n\t\t}\n\n\t\tconst vertices = this.gl.collaborators.vertices\n\t\tlet offset = 0\n\t\tconst zoom = this.getZoom()\n\t\tfor (const { cursor } of collaborators) {\n\t\t\tif (!cursor) continue\n\t\t\tpie(vertices, {\n\t\t\t\tcenter: Vec.From(cursor),\n\t\t\t\tradius: 3 * zoom,\n\t\t\t\toffset,\n\t\t\t\tnumArcSegments: numSegmentsPerCircle,\n\t\t\t})\n\t\t\toffset += dataSizePerCircle\n\t\t}\n\n\t\tthis.gl.prepareTriangles(this.gl.collaborators, totalSize)\n\n\t\toffset = 0\n\t\tfor (const { color } of collaborators) {\n\t\t\tthis.gl.setFillColor(getRgba(color))\n\t\t\tthis.gl.context.drawArrays(this.gl.context.TRIANGLES, offset / 2, dataSizePerCircle / 2)\n\t\t\toffset += dataSizePerCircle\n\t\t}\n\t}\n}\n"],
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