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| ## Minimap Widget |
297 changes: 297 additions & 0 deletions
297
packages/blocks/src/root-block/widgets/minimap/index.ts
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| import { WidgetElement } from '@blocksuite/block-std'; | ||
| import { throttle } from '@blocksuite/global/utils'; | ||
| import { css, html } from 'lit'; | ||
| import { customElement, query, state } from 'lit/decorators.js'; | ||
| import { styleMap } from 'lit/directives/style-map.js'; | ||
|
|
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| import { on, once, stopPropagation } from '../../../_common/utils/event.js'; | ||
| import { Bound } from '../../../surface-block/index.js'; | ||
| import { EdgelessRootBlockComponent } from '../../edgeless/edgeless-root-block.js'; | ||
| import { edgelessElementsBound } from '../../edgeless/utils/bound-utils.js'; | ||
|
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| export const AFFINE_MINIMAP_WIDGET = 'affine-minimap-widget'; | ||
|
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| const DEFAULT_WIDTH = 160 * 2; | ||
| const DEFAULT_HEIGHT = 90 * 2; | ||
|
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| @customElement(AFFINE_MINIMAP_WIDGET) | ||
| export class AffineMinimapWidget extends WidgetElement { | ||
| static override styles = css` | ||
| :host { | ||
| display: flex; | ||
| position: absolute; | ||
| width: fit-content; | ||
| height: fit-content; | ||
| right: 12px; | ||
| // bottom: 20px; | ||
| top: 20px; | ||
| z-index: 2; | ||
| padding: 8px; | ||
| border-radius: 8px; | ||
| border: 1px solid var(--affine-border-color); | ||
| background-color: var(--affine-background-overlay-panel-color); | ||
| box-shadow: var(--affine-shadow-2); | ||
| overflow: hidden; | ||
| user-select: none; | ||
| } | ||
| canvas[aria-label='minimap'] { | ||
| display: flex; | ||
| flex: 1; | ||
| width: 100%; | ||
| } | ||
| .slider { | ||
| position: absolute; | ||
| transform: translate3d(0px, 0px, 0px); | ||
| background: rgba(100, 100, 100, 0.2); | ||
| contain: strict; | ||
| &:hover { | ||
| background: rgba(100, 100, 100, 0.35); | ||
| } | ||
| &.active { | ||
| background: rgba(0, 0, 0, 0.3); | ||
| } | ||
| } | ||
| `; | ||
|
|
||
| get isEdgeless() { | ||
| return this.blockElement instanceof EdgelessRootBlockComponent; | ||
| } | ||
|
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| @query('canvas') | ||
| canvas!: HTMLCanvasElement; | ||
|
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| @query('.slider') | ||
| slider!: HTMLDivElement; | ||
|
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| @state() | ||
| zoom: number = 1; | ||
|
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| @state() | ||
| viewportBounds: Bound = new Bound(); | ||
|
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| bounds: Bound = new Bound(); | ||
|
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| scale: number = 1; | ||
|
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| // Dragging slider | ||
| dragging: boolean = false; | ||
|
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| private _draw(width: number, height: number) { | ||
| const edgeless = this.blockElement as EdgelessRootBlockComponent; | ||
| const bounds = edgelessElementsBound(edgeless.service.edgelessElements); | ||
|
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| // @TODO(fundon): offset should be checked, prev bounds | ||
| this.bounds = bounds; | ||
| this.scale = Math.min( | ||
| width / (bounds.w || width), | ||
| height / (bounds.h || height) | ||
| ); | ||
|
|
||
| const ctx = this.canvas.getContext('2d')!; | ||
| ctx.clearRect(0, 0, this.canvas.width, this.canvas.height); | ||
| ctx.save(); | ||
| ctx.fillStyle = 'rgba(127.5, 127.5, 127.5, 0.6)'; | ||
|
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||
| const dpr = window.devicePixelRatio; | ||
| const matrix = new DOMMatrix() | ||
| .scaleSelf(dpr) | ||
| .scaleSelf(this.scale) | ||
| .translateSelf( | ||
| -bounds.x + (width / this.scale - bounds.w) / 2, | ||
| -bounds.y + (height / this.scale - bounds.h) / 2 | ||
| ); | ||
|
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| ctx.setTransform(matrix); | ||
|
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| edgeless.service.edgelessElements.forEach(ele => { | ||
| const { x, y, w, h } = ele.elementBound; | ||
| const m = matrix.translate(x, y); | ||
|
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||
| ctx.save(); | ||
| ctx.setTransform(m); | ||
| // const cx = w / 2; | ||
| // const cy = h / 2; | ||
| // ctx.setTransform(m.translateSelf(cx, cy).translateSelf(-cx, -cy)); | ||
|
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| ctx.fillRect(0, 0, w, h); | ||
| ctx.fill(); | ||
|
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| ctx.restore(); | ||
| }); | ||
|
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| ctx.setTransform(matrix.inverse()); | ||
| } | ||
|
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| override firstUpdated() { | ||
| const dpr = window.devicePixelRatio; | ||
| const width = DEFAULT_WIDTH; | ||
| const height = DEFAULT_HEIGHT; | ||
| this.canvas.style.width = `${DEFAULT_WIDTH}px`; | ||
| this.canvas.style.height = `${DEFAULT_HEIGHT}px`; | ||
| this.canvas.width = DEFAULT_WIDTH * dpr; | ||
| this.canvas.height = DEFAULT_HEIGHT * dpr; | ||
|
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| if (this.isEdgeless) { | ||
| const edgeless = this.blockElement as EdgelessRootBlockComponent; | ||
|
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| this.disposables.add( | ||
| edgeless.service.viewport.sizeUpdated.on(rect => { | ||
| this._draw(width, height); | ||
|
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||
| this.viewportBounds.w = rect.width * this.scale; | ||
| this.viewportBounds.h = rect.height * this.scale; | ||
| this.viewportBounds.x = (width - this.viewportBounds.w) / 2; | ||
| this.viewportBounds.y = (height - this.viewportBounds.h) / 2; | ||
| this.requestUpdate(); | ||
| }) | ||
| ); | ||
| this.disposables.add( | ||
| edgeless.service.viewport.viewportUpdated.on(({ zoom, center }) => { | ||
| if (this.dragging) return; | ||
|
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||
| const cx = (width - this.viewportBounds.w) / 2; | ||
| const cy = (height - this.viewportBounds.h) / 2; | ||
| const dx = center[0] - this.bounds.w / 2 - this.bounds.x; | ||
| const dy = center[1] - this.bounds.h / 2 - this.bounds.y; | ||
|
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| this.zoom = zoom; | ||
| this.viewportBounds.x = cx + dx * this.scale; | ||
| this.viewportBounds.y = cy + dy * this.scale; | ||
| this.requestUpdate(); | ||
| }) | ||
| ); | ||
|
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| /* | ||
| this.disposables.add( | ||
| edgeless.service.viewport.viewportMoved.on(delta => { | ||
| if (this.dragging) return; | ||
| this.viewportBounds.x += delta[0] * this.scale; | ||
| this.viewportBounds.y += delta[1] * this.scale; | ||
| this.requestUpdate(); | ||
| }) | ||
| ); | ||
| */ | ||
|
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| this.disposables.addFromEvent(this, 'pointerdown', stopPropagation); | ||
| this.disposables.addFromEvent(this, 'wheel', stopPropagation); | ||
| this.disposables.addFromEvent(this.canvas, 'click', (e: MouseEvent) => { | ||
| e.stopPropagation(); | ||
|
|
||
| const box = this.canvas.getBoundingClientRect(); | ||
| const x = e.clientX - box.left - this.viewportBounds.w / 2; | ||
| const y = e.clientY - box.top - this.viewportBounds.h / 2; | ||
| const dx = x - this.viewportBounds.x; | ||
| const dy = y - this.viewportBounds.y; | ||
|
|
||
| this.viewportBounds.x = x; | ||
| this.viewportBounds.y = y; | ||
| this.requestUpdate(); | ||
|
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| edgeless.service.viewport.applyDeltaCenter( | ||
| dx / this.scale, | ||
| dy / this.scale | ||
| ); | ||
| }); | ||
| this.disposables.addFromEvent( | ||
| this.slider, | ||
| 'pointerdown', | ||
| (e: PointerEvent) => { | ||
| e.stopPropagation(); | ||
|
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| this.slider.classList.add('active'); | ||
|
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| const point = [e.clientX, e.clientY]; | ||
| const stopDragging = on( | ||
| this.slider.ownerDocument, | ||
| 'pointermove', | ||
| throttle((e: PointerEvent) => { | ||
| e.stopPropagation(); | ||
| this.dragging = true; | ||
|
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| const { clientX, clientY } = e; | ||
| const dx = clientX - point[0]; | ||
| const dy = clientY - point[1]; | ||
|
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| point[0] = clientX; | ||
| point[1] = clientY; | ||
|
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| this.viewportBounds.x += dx; | ||
| this.viewportBounds.y += dy; | ||
| this.requestUpdate(); | ||
|
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| edgeless.service.viewport.applyDeltaCenter( | ||
| dx / this.scale, | ||
| dy / this.scale | ||
| ); | ||
| }, 1000 / 60) | ||
| ); | ||
|
|
||
| once(this.slider.ownerDocument, 'pointerup', (e: PointerEvent) => { | ||
| e.stopPropagation(); | ||
| stopDragging(); | ||
| this.dragging = false; | ||
| this.slider.classList.remove('active'); | ||
| }); | ||
| } | ||
| ); | ||
|
|
||
| this.disposables.add( | ||
| edgeless.surfaceBlockModel.elementAdded.on(() => { | ||
| this._draw(width, height); | ||
| }) | ||
| ); | ||
| this.disposables.add( | ||
| edgeless.surfaceBlockModel.elementRemoved.on(() => { | ||
| this._draw(width, height); | ||
| }) | ||
| ); | ||
| this.disposables.add( | ||
| edgeless.surfaceBlockModel.elementUpdated.on(() => { | ||
| this._draw(width, height); | ||
| }) | ||
| ); | ||
| this.disposables.add( | ||
| edgeless.doc.slots.blockUpdated.on(() => { | ||
| this._draw(width, height); | ||
| }) | ||
| ); | ||
| } | ||
| } | ||
|
|
||
| override connectedCallback() { | ||
| super.connectedCallback(); | ||
| } | ||
|
|
||
| override disconnectedCallback() { | ||
| super.disconnectedCallback(); | ||
| this.disposables.dispose(); | ||
| } | ||
|
|
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| override render() { | ||
| const { viewportBounds, zoom } = this; | ||
|
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| return html`<canvas aria-label="minimap"></canvas> | ||
| <div | ||
| class="slider" | ||
| style=${styleMap({ | ||
| width: `${viewportBounds.w}px`, | ||
| height: `${viewportBounds.h}px`, | ||
| transform: `translate3d(${viewportBounds.x}px,${viewportBounds.y}px, 0px) scale(${1 / zoom})`, | ||
| })} | ||
| ></div>`; | ||
| } | ||
| } | ||
|
|
||
| declare global { | ||
| interface HTMLElementTagNameMap { | ||
| [AFFINE_MINIMAP_WIDGET]: AffineMinimapWidget; | ||
| } | ||
| } |