feat(edgeless): auto-connect indicator and index label #5136
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,138 @@ | ||
| import { WithDisposable } from '@blocksuite/lit'; | ||
| import { css, LitElement, nothing, svg } from 'lit'; | ||
| import { customElement, property } from 'lit/decorators.js'; | ||
| import { repeat } from 'lit/directives/repeat.js'; | ||
| import { styleMap } from 'lit/directives/style-map.js'; | ||
|
|
||
| import { EdgelessBlockType } from '../../../../surface-block/edgeless-types.js'; | ||
| import { Bound, type IVec, Vec } from '../../../../surface-block/index.js'; | ||
| import type { SurfaceBlockComponent } from '../../../../surface-block/surface-block.js'; | ||
| import { isNoteBlock } from '../../utils/query.js'; | ||
|
|
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| const { NOTE } = EdgelessBlockType; | ||
|
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| @customElement('edgeless-auto-connect-line') | ||
| export class EdgelessAutoConnectLine extends WithDisposable(LitElement) { | ||
| static override styles = css` | ||
| :host { | ||
| position: absolute; | ||
| top: 0; | ||
| left: 0; | ||
| pointer-events: none; | ||
| } | ||
| `; | ||
| @property({ attribute: false }) | ||
| surface!: SurfaceBlockComponent; | ||
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| @property({ attribute: false }) | ||
| show = false; | ||
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| protected override firstUpdated(): void { | ||
| const { _disposables, surface } = this; | ||
| _disposables.add( | ||
| surface.viewport.slots.viewportUpdated.on(() => { | ||
| this.requestUpdate(); | ||
| }) | ||
| ); | ||
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||
| _disposables.add( | ||
| surface.page.slots.blockUpdated.on(({ type, id }) => { | ||
| if (type === 'update' && isNoteBlock(surface.pickById(id))) { | ||
| this.requestUpdate(); | ||
| } | ||
| }) | ||
| ); | ||
| } | ||
|
|
||
| protected override render() { | ||
| if (!this.show) return nothing; | ||
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| const { viewport } = this.surface; | ||
| const notes = this.surface.getblocks(NOTE).filter(note => !note.hidden); | ||
| const points: [IVec, IVec][] = []; | ||
| for (let i = 1; i < notes.length; i++) { | ||
| const last = notes[i - 1]; | ||
| const current = notes[i]; | ||
| const lastBound = Bound.deserialize(last.xywh); | ||
| const currentBound = Bound.deserialize(current.xywh); | ||
| const start = viewport.toViewCoord(lastBound.center[0], lastBound.maxY); | ||
| const end = viewport.toViewCoord( | ||
| currentBound.center[0], | ||
| currentBound.maxY | ||
| ); | ||
| points.push([start, end]); | ||
| } | ||
| const expand = 20; | ||
|
|
||
| return repeat( | ||
| points, | ||
| (_, index) => index, | ||
| ([start, end]) => { | ||
| const width = Math.abs(start[0] - end[0]); | ||
| const height = Math.abs(start[1] - end[1]); | ||
| const style = styleMap({ | ||
| position: 'absolute', | ||
| transform: `translate(${Math.min(start[0], end[0]) - expand / 2}px, ${ | ||
| Math.min(start[1], end[1]) - expand / 2 | ||
| }px)`, | ||
| }); | ||
| const lineStart = [0, 0]; | ||
| const lineEnd = [width, height]; | ||
| if (start[0] > end[0]) { | ||
| lineStart[0] = width; | ||
| lineEnd[0] = 0; | ||
| } else { | ||
| lineStart[0] = 0; | ||
| lineEnd[0] = width; | ||
| } | ||
|
|
||
| if (start[1] > end[1]) { | ||
| lineStart[1] = height; | ||
| lineEnd[1] = 0; | ||
| } else { | ||
| lineStart[1] = 0; | ||
| lineEnd[1] = height; | ||
| } | ||
|
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| const newWidth = width + expand; | ||
| const newHeight = height + expand; | ||
|
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| const newstart = Vec.add(Vec.pointOffset(lineStart, lineEnd, 16), [ | ||
|
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| expand / 2, | ||
| expand / 2, | ||
| ]); | ||
| const newend = Vec.add(Vec.pointOffset(lineEnd, lineStart, 16), [ | ||
| expand / 2, | ||
| expand / 2, | ||
| ]); | ||
|
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||
| return svg` | ||
| <svg style=${style} width="${newWidth}px" height="${newHeight}px" viewBox="0 0 ${newWidth} ${newHeight}" xmlns="http://www.w3.org/2000/svg"> | ||
| <defs> | ||
| <marker | ||
| id="arrow" | ||
| refX="10" | ||
| refY="10" | ||
| markerWidth="10" | ||
| markerHeight="20" | ||
| orient="auto" | ||
| > | ||
| <path d="M 2 2 L 10 10 L 2 18" fill="none" stroke="var(--affine-black-10)" stroke-linecap="round" stroke-linejoin="round" /> | ||
| </marker> | ||
| </defs> | ||
|
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| <line | ||
| x1="${newstart[0]}" | ||
| y1="${newstart[1]}" | ||
| x2="${newend[0]}" | ||
| y2="${newend[1]}" | ||
| stroke="var(--affine-black-10)" | ||
| stroke-width="2" | ||
| marker-end="url(#arrow)" | ||
| /> | ||
| </svg> | ||
| `; | ||
| } | ||
| ); | ||
| } | ||
| } | ||
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Should this be a const defined in top level of this module?