41 lines
1.7 KiB
JavaScript
41 lines
1.7 KiB
JavaScript
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export function bias(val) {
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const c = 0.501;
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const x = Math.abs(val);
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return Math.sign(val) * (x / ((1 / c - 2) * (1 - x) + 1));
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}
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export function calculateUpdatedOffset(_ref) {
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let {
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selectedElement,
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containerSize,
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contentSize,
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isRtl,
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currentScrollOffset,
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isHorizontal
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} = _ref;
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const clientSize = isHorizontal ? selectedElement.clientWidth : selectedElement.clientHeight;
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const offsetStart = isHorizontal ? selectedElement.offsetLeft : selectedElement.offsetTop;
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const adjustedOffsetStart = isRtl && isHorizontal ? contentSize - offsetStart - clientSize : offsetStart;
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const totalSize = containerSize + currentScrollOffset;
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const itemOffset = clientSize + adjustedOffsetStart;
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const additionalOffset = clientSize * 0.4;
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if (adjustedOffsetStart <= currentScrollOffset) {
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currentScrollOffset = Math.max(adjustedOffsetStart - additionalOffset, 0);
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} else if (totalSize <= itemOffset) {
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currentScrollOffset = Math.min(currentScrollOffset - (totalSize - itemOffset - additionalOffset), contentSize - containerSize);
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}
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return currentScrollOffset;
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}
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export function calculateCenteredOffset(_ref2) {
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let {
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selectedElement,
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containerSize,
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contentSize,
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isRtl,
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isHorizontal
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} = _ref2;
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const clientSize = isHorizontal ? selectedElement.clientWidth : selectedElement.clientHeight;
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const offsetStart = isHorizontal ? selectedElement.offsetLeft : selectedElement.offsetTop;
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const offsetCentered = isRtl && isHorizontal ? contentSize - offsetStart - clientSize / 2 - containerSize / 2 : offsetStart + clientSize / 2 - containerSize / 2;
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return Math.min(contentSize - containerSize, Math.max(0, offsetCentered));
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}
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//# sourceMappingURL=helpers.mjs.map
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