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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 09:22:09 +0000
commit43a97878ce14b72f0981164f87f2e35e14151312 (patch)
tree620249daf56c0258faa40cbdcf9cfba06de2a846 /testing/web-platform/tests/css/CSS2/visudet/line-height-204.html
parentInitial commit. (diff)
downloadfirefox-upstream.tar.xz
firefox-upstream.zip
Adding upstream version 110.0.1.upstream/110.0.1upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+<!DOCTYPE html>
+<html class="reftest-wait">
+<meta charset="utf-8">
+<title>CSS2 Line height test: baseline position, normal sizing vs explicit sizing</title>
+<link rel="author" title="Florian Rivoal" href="https://florian.rivoal.net">
+<link rel="help" href="https://drafts.csswg.org/css2/visudet.html#line-height">
+<link rel="match" href="reference/line-height-202-ref.html">
+<meta name="assert" content="The position of the baseline in an inline-level box whose line-height is normal
+ 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
+ are the same,
+ assuming only the first available font is used.">
+<style>
+@font-face {
+ font-family: 'high';
+ font-style: normal;
+ font-weight: 400;
+ src: url(/fonts/Revalia.woff) format('woff');
+}
+
+div {
+ position: absolute;
+ font-size: 100px;
+ width: 2em; /* plenty of room for the (invisible) text */
+ text-align: right;
+ color: transparent;
+}
+span { /* visible thing aligned to the baseline, and small enough to not influence its position */
+ display: inline-block;
+ width: 20px;
+ height: 20px;
+}
+
+/* white #lh-auto is on top of red #lh-manual,
+ and as their baselines should line up
+ #lh-manual should be fully covered,
+ and no red should be visible */
+#lh-manual { font-family: high; }
+#lh-manual span { background: red; }
+
+#lh-auto { font-family: high; line-height: normal; }
+#lh-auto span { background: white; }
+
+</style>
+
+<body onload="measure()">
+<p>Test passes if there is <strong>no red</strong> below.
+
+<div id=lh-manual>a<span></span></div>
+<div id=lh-auto>a<span></span></div>
+
+<script>
+function measure() { /* let layout complete first, so that we can measure things */
+ var lha = document.getElementById("lh-auto");
+ var lhm = document.getElementById("lh-manual")
+ var h = window.getComputedStyle(lha).height; /*getting the used-value of line-height by proxy */
+ lhm.style.lineHeight = h;
+ document.documentElement.className = "";
+}
+</script>