47 lines
1.2 KiB
TypeScript
47 lines
1.2 KiB
TypeScript
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// =============================== Motion ===============================
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export function getMotionName(prefixCls: string, transitionName?: string, animationName?: string) {
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let motionName = transitionName;
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if (!motionName && animationName) {
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motionName = `${prefixCls}-${animationName}`;
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}
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return motionName;
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}
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// ================================ UUID ================================
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let uuid = -1;
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export function getUUID() {
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uuid += 1;
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return uuid;
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}
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// =============================== Offset ===============================
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function getScroll(w: Window, top?: boolean): number {
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let ret = w[`page${top ? 'Y' : 'X'}Offset`];
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const method = `scroll${top ? 'Top' : 'Left'}`;
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if (typeof ret !== 'number') {
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const d = w.document;
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ret = d.documentElement[method];
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if (typeof ret !== 'number') {
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ret = d.body[method];
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}
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}
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return ret;
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}
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type CompatibleDocument = {
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parentWindow?: Window;
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} & Document;
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export function offset(el: Element) {
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const rect = el.getBoundingClientRect();
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const pos = {
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left: rect.left,
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top: rect.top,
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};
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const doc = el.ownerDocument as CompatibleDocument;
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const w = doc.defaultView || doc.parentWindow;
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pos.left += getScroll(w);
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pos.top += getScroll(w, true);
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return pos;
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}
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