59 lines
2 KiB
HTML
59 lines
2 KiB
HTML
<!DOCTYPE html>
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<html class="reftest-wait">
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<meta charset="utf-8">
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<title>CSS2 Line height test: baseline position, normal sizing vs explicit sizing</title>
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<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net">
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<link rel="help" href="https://drafts.csswg.org/css2/visudet.html#line-height">
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<link rel="match" href="reference/line-height-202-ref.html">
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<meta name="assert" content="The position of the baseline in an inline-level box whose line-height is normal
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and the position of the baseline in an inline-level box whose line-height is set to a non normal value resulting in the same height
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are the same,
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assuming only the first available font is used.">
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<style>
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@font-face {
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font-family: 'high';
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font-style: normal;
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font-weight: 400;
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src: url(/fonts/Revalia.woff) format('woff');
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}
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div {
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position: absolute;
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font-size: 100px;
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width: 2em; /* plenty of room for the (invisible) text */
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text-align: right;
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color: transparent;
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}
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span { /* visible thing aligned to the baseline, and small enough to not influence its position */
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display: inline-block;
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width: 20px;
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height: 20px;
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}
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/* white #lh-auto is on top of red #lh-manual,
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and as their baselines should line up
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#lh-manual should be fully covered,
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and no red should be visible */
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#lh-manual { font-family: high; }
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#lh-manual span { background: red; }
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#lh-auto { font-family: high; line-height: normal; }
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#lh-auto span { background: white; }
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</style>
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<body onload="measure()">
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<p>Test passes if there is <strong>no red</strong> below.
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<div id=lh-manual>a<span></span></div>
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<div id=lh-auto>a<span></span></div>
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<script>
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function measure() { /* let layout complete first, so that we can measure things */
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var lha = document.getElementById("lh-auto");
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var lhm = document.getElementById("lh-manual")
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var h = window.getComputedStyle(lha).height; /*getting the used-value of line-height by proxy */
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lhm.style.lineHeight = h;
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document.documentElement.className = "";
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}
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</script>
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