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75 lines
2.8 KiB
75 lines
2.8 KiB
import { ElementEvent, Image as GImage, Rect as GRect } from '@antv/g';
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import { getAncestorShapes } from '../../utils/shape';
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export class Image extends GImage {
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constructor(options) {
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super(options);
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this.onMounted = () => {
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this.handleRadius();
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};
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this.onAttrModified = () => {
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this.handleRadius();
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};
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current = this;
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this.isMutationObserved = true;
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this.addEventListener(ElementEvent.MOUNTED, this.onMounted);
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this.addEventListener(ElementEvent.ATTR_MODIFIED, this.onAttrModified);
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}
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handleRadius() {
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const { radius, clipPath, width = 0, height = 0 } = this.attributes;
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if (radius && width && height) {
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const [x, y] = this.getBounds().min;
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const clipPathStyle = { x, y, radius, width, height };
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if (clipPath) {
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Object.assign(this.parsedStyle.clipPath.style, clipPathStyle);
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}
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else {
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const rect = new GRect({ style: clipPathStyle });
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this.style.clipPath = rect;
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}
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}
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else {
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if (clipPath)
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this.style.clipPath = null;
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}
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}
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}
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const ImagesWeakMap = new WeakMap();
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let current = null;
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/**
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* <zh/> 由于 g clipPath 不支持相对位置，因此当作用的元素发生位置变化时，需要通知 Image 更新 clipPath。
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*
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* 通过 connectImage 创建图形与图片的关联，并结合 dispatchPositionChange 方法触发更新
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*
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* ⚠️ 这是一种临时的、黑盒的解决方案，如果后续 g 支持相对位置，会移除该方法。
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*
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* <en/> Since g clipPath does not support relative positions, when the position of the affected element changes, the Image needs to be notified to update the clipPath.
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*
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* Use connectImage to create an association between the shape and the image, and combine it with the dispatchPositionChange method to trigger the update.
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*
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* ⚠️ This is a temporary, black-box solution, and if g supports relative positions in the future, this method will be removed.
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* @param target - <zh/> 目标元素 <en/> Target element
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*/
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export const connectImage = (target) => {
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if (current && getAncestorShapes(current).includes(target)) {
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const images = ImagesWeakMap.get(target);
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if (images) {
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if (!images.includes(current))
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images.push(current);
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}
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else
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ImagesWeakMap.set(target, [current]);
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}
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};
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/**
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* <zh/> 触发关联的图片更新位置
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*
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* <en/> Trigger the associated image to update its position
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* @param target - <zh/> 目标元素 <en/> Target element
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*/
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export const dispatchPositionChange = (target) => {
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const image = ImagesWeakMap.get(target);
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if (image) {
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image.forEach((i) => i.handleRadius());
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}
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};
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//# sourceMappingURL=image.js.map
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