51 lines
1.5 KiB
JavaScript
51 lines
1.5 KiB
JavaScript
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'use strict';
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Object.defineProperty(exports, "__esModule", {
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value: true
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});
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exports['default'] = getRequestAnimationFrame;
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exports.cancelRequestAnimationFrame = cancelRequestAnimationFrame;
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var availablePrefixs = ['moz', 'ms', 'webkit'];
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function requestAnimationFramePolyfill() {
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var lastTime = 0;
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return function (callback) {
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var currTime = new Date().getTime();
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var timeToCall = Math.max(0, 16 - (currTime - lastTime));
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var id = window.setTimeout(function () {
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callback(currTime + timeToCall);
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}, timeToCall);
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lastTime = currTime + timeToCall;
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return id;
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};
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}
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function getRequestAnimationFrame() {
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if (typeof window === 'undefined') {
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return function () {};
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}
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if (window.requestAnimationFrame) {
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// https://github.com/vuejs/vue/issues/4465
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return window.requestAnimationFrame.bind(window);
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}
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var prefix = availablePrefixs.filter(function (key) {
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return key + 'RequestAnimationFrame' in window;
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})[0];
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return prefix ? window[prefix + 'RequestAnimationFrame'] : requestAnimationFramePolyfill();
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}
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function cancelRequestAnimationFrame(id) {
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if (typeof window === 'undefined') {
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return null;
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}
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if (window.cancelAnimationFrame) {
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return window.cancelAnimationFrame(id);
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}
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var prefix = availablePrefixs.filter(function (key) {
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return key + 'CancelAnimationFrame' in window || key + 'CancelRequestAnimationFrame' in window;
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})[0];
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return prefix ? (window[prefix + 'CancelAnimationFrame'] || window[prefix + 'CancelRequestAnimationFrame']).call(this, id) : clearTimeout(id);
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}
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