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8f1d496972
* docs: fix typo in docs * remove rc-util/lib/Dom/addEventListener * fix * fix
27 lines
873 B
TypeScript
27 lines
873 B
TypeScript
export type BindElement = HTMLElement | Window | null | undefined;
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export function getTargetRect(target: BindElement): DOMRect {
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return target !== window
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? (target as HTMLElement).getBoundingClientRect()
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: ({ top: 0, bottom: window.innerHeight } as DOMRect);
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}
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export function getFixedTop(placeholderRect: DOMRect, targetRect: DOMRect, offsetTop?: number) {
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if (offsetTop !== undefined && targetRect.top > placeholderRect.top - offsetTop) {
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return offsetTop + targetRect.top;
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}
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return undefined;
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}
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export function getFixedBottom(
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placeholderRect: DOMRect,
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targetRect: DOMRect,
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offsetBottom?: number,
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) {
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if (offsetBottom !== undefined && targetRect.bottom < placeholderRect.bottom + offsetBottom) {
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const targetBottomOffset = window.innerHeight - targetRect.bottom;
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return offsetBottom + targetBottomOffset;
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}
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return undefined;
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}
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