animation.ts
1.76 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
import { isServer } from '/@/utils/is';
let lastTime = 0;
const prefixes = 'webkit moz ms o'.split(' ');
let requestAnimationFrame: typeof window.requestAnimationFrame;
let cancelAnimationFrame: typeof window.cancelAnimationFrame;
(() => {
const NO_LOOP: any = () => {};
const getWindowFrame = (name: string) => {
return name as any;
};
if (isServer) {
requestAnimationFrame = cancelAnimationFrame = NO_LOOP;
} else {
requestAnimationFrame = window.requestAnimationFrame;
cancelAnimationFrame = window.cancelAnimationFrame;
let prefix;
for (let i = 0; i < prefixes.length; i++) {
if (requestAnimationFrame && cancelAnimationFrame) {
break;
}
prefix = prefixes[i];
requestAnimationFrame =
requestAnimationFrame || window[getWindowFrame(prefix + 'RequestAnimationFrame')];
cancelAnimationFrame =
cancelAnimationFrame ||
window[getWindowFrame(prefix + 'CancelAnimationFrame')] ||
window[getWindowFrame(prefix + 'CancelRequestAnimationFrame')];
}
// If the current browser does not support requestAnimationFrame and cancelAnimationFrame, it will fall back to setTimeout
if (!requestAnimationFrame || !cancelAnimationFrame) {
requestAnimationFrame = function (callback: Fn) {
const currTime = new Date().getTime();
const timeToCall = Math.max(0, 16 - (currTime - lastTime));
const id = window.setTimeout(() => {
/* eslint-disable-next-line */
callback(currTime + timeToCall);
}, timeToCall);
lastTime = currTime + timeToCall;
return id;
};
cancelAnimationFrame = function (id: number) {
window.clearTimeout(id);
};
}
}
})();
export { requestAnimationFrame, cancelAnimationFrame };