ant-design-vue/components/_util/raf.ts

37 lines
759 B
TypeScript

interface RafMap {
[id: number]: number;
}
let id = 0;
const ids: RafMap = {};
// Support call raf with delay specified frame
export default function wrapperRaf(callback: () => void, delayFrames = 1): number {
const myId: number = id++;
let restFrames: number = delayFrames;
function internalCallback() {
restFrames -= 1;
if (restFrames <= 0) {
callback();
delete ids[myId];
} else {
ids[myId] = requestAnimationFrame(internalCallback);
}
}
ids[myId] = requestAnimationFrame(internalCallback);
return myId;
}
wrapperRaf.cancel = function cancel(pid?: number) {
if (pid === undefined) return;
cancelAnimationFrame(ids[pid]);
delete ids[pid];
};
wrapperRaf.ids = ids; // export this for test usage