forked from mirrors/gecko-dev
96db36c21e
--HG-- extra : rebase_source : 51c27b69f29ce299954ddafc6140a91fc508b917 extra : source : 5cb02c09512316d63f6a3fbda81d04a081cf2907 extra : histedit_source : 01eccfaa0faf1d92e45324e3bb296334fbd53449
33 lines
1.1 KiB
JavaScript
33 lines
1.1 KiB
JavaScript
function getBlockAxisName(elem) {
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var wm = getComputedStyle(elem).writingMode;
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return (!wm || wm == 'horizontal-tb') ? 'height' : 'width';
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}
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function getBSize(elem) {
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return elem.getBoundingClientRect()[getBlockAxisName(elem)] + 'px';
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}
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function setBSize(elem, bsize) {
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elem.style[getBlockAxisName(elem)] = bsize;
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elem.style.lineHeight = bsize;
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}
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// Ruby annotations are placed based on block-axis size of inline boxes
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// instead of line box. Block-axis size of an inline box is the max
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// height of the font, while that of line box is line height. Hence we
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// sometimes need to explicitly set the block-axis size of an inline
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// box to a block to simulate the exact behavior, which is what the
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// following two functions do.
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function makeBSizeMatchInlineBox(block, inline) {
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setBSize(block, getBSize(inline));
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}
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function makeBSizeOfParentMatch(elems) {
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// The size change is divided into two phases to avoid
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// triggering reflow for every element.
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for (var elem of elems)
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elem.dataset.bsize = getBSize(elem);
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for (var elem of elems)
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setBSize(elem.parentNode, elem.dataset.bsize);
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}
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