bc518174
 王天杨
提交两个项目文件
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"use strict";
var __defProp = Object.defineProperty;
var __getOwnPropDesc = Object.getOwnPropertyDescriptor;
var __getOwnPropNames = Object.getOwnPropertyNames;
var __hasOwnProp = Object.prototype.hasOwnProperty;
var __export = (target, all) => {
for (var name in all)
__defProp(target, name, { get: all[name], enumerable: true });
};
var __copyProps = (to, from, except, desc) => {
if (from && typeof from === "object" || typeof from === "function") {
for (let key of __getOwnPropNames(from))
if (!__hasOwnProp.call(to, key) && key !== except)
__defProp(to, key, { get: () => from[key], enumerable: !(desc = __getOwnPropDesc(from, key)) || desc.enumerable });
}
return to;
};
var __toCommonJS = (mod) => __copyProps(__defProp({}, "__esModule", { value: true }), mod);
// packages/core/rect/src/index.ts
var src_exports = {};
__export(src_exports, {
observeElementRect: () => observeElementRect
});
module.exports = __toCommonJS(src_exports);
// packages/core/rect/src/observeElementRect.ts
function observeElementRect(elementToObserve, callback) {
const observedData = observedElements.get(elementToObserve);
if (observedData === void 0) {
observedElements.set(elementToObserve, { rect: {}, callbacks: [callback] });
if (observedElements.size === 1) {
rafId = requestAnimationFrame(runLoop);
}
} else {
observedData.callbacks.push(callback);
callback(elementToObserve.getBoundingClientRect());
}
return () => {
const observedData2 = observedElements.get(elementToObserve);
if (observedData2 === void 0) return;
const index = observedData2.callbacks.indexOf(callback);
if (index > -1) {
observedData2.callbacks.splice(index, 1);
}
if (observedData2.callbacks.length === 0) {
observedElements.delete(elementToObserve);
if (observedElements.size === 0) {
cancelAnimationFrame(rafId);
}
}
};
}
var rafId;
var observedElements = /* @__PURE__ */ new Map();
function runLoop() {
const changedRectsData = [];
observedElements.forEach((data, element) => {
const newRect = element.getBoundingClientRect();
if (!rectEquals(data.rect, newRect)) {
data.rect = newRect;
changedRectsData.push(data);
}
});
changedRectsData.forEach((data) => {
data.callbacks.forEach((callback) => callback(data.rect));
});
rafId = requestAnimationFrame(runLoop);
}
function rectEquals(rect1, rect2) {
return rect1.width === rect2.width && rect1.height === rect2.height && rect1.top === rect2.top && rect1.right === rect2.right && rect1.bottom === rect2.bottom && rect1.left === rect2.left;
}
//# sourceMappingURL=index.js.map
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