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<!DOCTYPE html>
<meta charset="utf-8"/>
<title>Open Font Format: USE_TYPO_METRICS</title>
<link rel="help" href="https://w3c.github.io/mathml-core/#text-layout"/>
<link rel="match" href="use-typo-metrics-1-ref.html"/>
<meta name="assert" content="Verify that the USE_TYPO_METRICS flag from the OS/2 table is taken into account to calculate line height.">
<style>
@font-face {
font-family: TestFont;
src: url("/fonts/math/lineheight5000-typolineheight2300.woff");
}
.green {
position: absolute;
background: green;
width: 115px;
}
.red {
position: absolute;
background: red;
width: 115px;
}
.forceHeight {
height: 230px;
}
.leftSide {
left: 10px;
}
.rightSide {
left: 125px;
}
span {
/* em=1000, lineHeight=5000, typoLineHeight=2300 and font-size=100px
implies typoLineHeightPx = 230px < 500px = lineHeightPx */
font-family: TestFont;
font-size: 100px;
color: transparent;
}
</style>
<body>
<p>Test passes if there is a green square and no red.</p>
<div>
<!-- Left side verifies that typoLineHeightPx <= 230px -->
<div class="leftSide red"><span>O</span></div>
<div class="leftSide green forceHeight"></div>
<!-- Right side verifies that typoLineHeightPx => 230px -->
<div class="rightSide red forceHeight"></div>
<div class="rightSide green"><span>O</span></div>
</div>
</body>
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