ant-design-vue/components/_util/getRequestAnimationFrame.js
2020-10-02 15:44:10 +08:00

47 lines
1.4 KiB
JavaScript

const availablePrefixs = ['moz', 'ms', 'webkit'];
function requestAnimationFramePolyfill() {
let lastTime = 0;
return function(callback) {
const currTime = new Date().getTime();
const timeToCall = Math.max(0, 16 - (currTime - lastTime));
const id = window.setTimeout(function() {
callback(currTime + timeToCall);
}, timeToCall);
lastTime = currTime + timeToCall;
return id;
};
}
export default function getRequestAnimationFrame() {
if (typeof window === 'undefined') {
return () => {};
}
if (window.requestAnimationFrame) {
// https://github.com/vuejs/vue/issues/4465
return window.requestAnimationFrame.bind(window);
}
const prefix = availablePrefixs.filter(key => `${key}RequestAnimationFrame` in window)[0];
return prefix ? window[`${prefix}RequestAnimationFrame`] : requestAnimationFramePolyfill();
}
export function cancelRequestAnimationFrame(id) {
if (typeof window === 'undefined') {
return null;
}
if (window.cancelAnimationFrame) {
return window.cancelAnimationFrame(id);
}
const prefix = availablePrefixs.filter(
key => `${key}CancelAnimationFrame` in window || `${key}CancelRequestAnimationFrame` in window,
)[0];
return prefix
? (
window[`${prefix}CancelAnimationFrame`] || window[`${prefix}CancelRequestAnimationFrame`]
).call(this, id)
: clearTimeout(id);
}