import type { ZRenderType } from '../zrender';
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import type CanvasPainter from '../canvas/Painter';
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import type BoundingRect from '../core/BoundingRect';
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import { extend } from '../core/util';
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class DebugRect {
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dom: HTMLDivElement
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private _hideTimeout: number
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constructor(style: Opts['style']) {
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const dom = this.dom = document.createElement('div');
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dom.className = 'ec-debug-dirty-rect';
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style = extend({}, style);
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extend(style, {
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backgroundColor: 'rgba(0, 0, 255, 0.2)',
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border: '1px solid #00f'
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});
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dom.style.cssText = `
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position: absolute;
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opacity: 0;
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transition: opacity 0.5s linear;
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pointer-events: none;
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`;
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for (let key in style) {
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if (style.hasOwnProperty(key)) {
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(dom.style as any)[key] = (style as any)[key];
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}
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}
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}
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update(rect: BoundingRect) {
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const domStyle = this.dom.style;
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domStyle.width = rect.width + 'px';
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domStyle.height = rect.height + 'px';
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domStyle.left = rect.x + 'px';
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domStyle.top = rect.y + 'px';
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}
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hide() {
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this.dom.style.opacity = '0';
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}
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show(autoHideDelay?: number) {
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clearTimeout(this._hideTimeout);
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this.dom.style.opacity = '1';
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// Auto hide after 2 second
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this._hideTimeout = setTimeout(() => {
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this.hide();
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}, autoHideDelay || 1000) as unknown as number;
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}
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}
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interface Opts {
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style?: {
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backgroundColor?: string
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color?: string
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}
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autoHideDelay?: number
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}
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export default function showDebugDirtyRect(zr: ZRenderType, opts?: Opts) {
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opts = opts || {};
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const painter = zr.painter as CanvasPainter;
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if (!painter.getLayers) {
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throw new Error('Debug dirty rect can only been used on canvas renderer.');
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}
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if (painter.isSingleCanvas()) {
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throw new Error('Debug dirty rect can only been used on zrender inited with container.');
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}
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const debugViewRoot = document.createElement('div');
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debugViewRoot.style.cssText = `
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position:absolute;
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left:0;
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top:0;
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right:0;
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bottom:0;
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pointer-events:none;
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`;
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debugViewRoot.className = 'ec-debug-dirty-rect-container';
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const debugRects: DebugRect[] = [];
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const dom = zr.dom;
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dom.appendChild(debugViewRoot);
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const computedStyle = getComputedStyle(dom);
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if (computedStyle.position === 'static') {
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dom.style.position = 'relative';
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}
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zr.on('rendered', function () {
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if (painter.getLayers) {
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let idx = 0;
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painter.eachBuiltinLayer((layer) => {
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if (!layer.debugGetPaintRects) {
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return;
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}
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const paintRects = layer.debugGetPaintRects();
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for (let i = 0; i < paintRects.length; i++) {
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if (!paintRects[i].width || !paintRects[i].height) {
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continue;
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}
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if (!debugRects[idx]) {
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debugRects[idx] = new DebugRect(opts.style);
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debugViewRoot.appendChild(debugRects[idx].dom);
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}
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debugRects[idx].show(opts.autoHideDelay);
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debugRects[idx].update(paintRects[i]);
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idx++;
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}
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});
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for (let i = idx; i < debugRects.length; i++) {
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debugRects[i].hide();
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}
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}
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});
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}
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