<!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>
