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<!DOCTYPE html>
<html class="reftest-wait">
<head>
<meta charset="utf-8">
<title>fractions bar</title>
<link rel="help" href="https://w3c.github.io/mathml-core/#fractions-mfrac">
<meta name="assert" content="Verify painting of the fraction bar when margin/padding/border are involved.">
<link rel="match" href="frac-bar-002-ref.html">
<style type="text/css">
@font-face {
font-family: TestFont;
src: url("/fonts/math/fraction-rulethickness10000.woff");
}
math {
/* FractionRuleThickness = 10000 * 1 / 1000 = 10px; */
/* The gap / shift / axisheight parameters are set to 0. */
font-family: "TestFont";
font-size: 1px;
}
#container {
position: absolute;
left: 0;
top: 0;
}
#red {
position: absolute;
background: red;
margin: 1px;
width: 148px;
height: 148px;
}
</style>
<script src="/mathml/support/fonts.js"></script>
<script src="/common/reftest-wait.js"></script>
<script>
window.addEventListener("load", () => { loadAllFonts().then(adjustPositionOfFraction); });
function adjustPositionOfFraction()
{
requestAnimationFrame(() => {
var container = document.getElementById("container");
var red = document.getElementById("red");
var numeratorBox = document.getElementById("numerator").getBoundingClientRect();
const shift = 50;
const numeratorMargin = 20;
/* Move the red square at the expected position,
with a 1px gap to avoid antialiasing issues. */
red.style.left = `${shift}px`;
red.style.top = `${shift}px`;
/* Move the fraction bar at the expected position. */
container.style.left = (shift - numeratorBox.left + numeratorMargin) + "px";
container.style.top = (shift - numeratorBox.bottom - numeratorMargin) + "px";
requestAnimationFrame(takeScreenshot);
});
}
</script>
</head>
<body>
<p>This test passes if you see a green <strong>square</strong> and no red.</p>
<div>
<div id="red"></div>
<div id="container">
<math>
<!-- border, padding and margin should not affect the width of the fraction bar. -->
<mfrac style="color: green; font-size: 15em;
border: 30px solid transparent;
padding: 60px; margin: 120px;
">
<!-- the bar width is the one of the numerator margin box i.e. 80 + 2 * (5 + 10 + 20) = 150px -->
<mspace id="numerator" width="80px"
style="border: 5px solid transparent;
padding: 10px; margin: 20px;"></mspace>
<mspace></mspace>
</mfrac>
</math>
</div>
</div>
<script src="/mathml/support/feature-detection.js"></script>
<script>MathMLFeatureDetection.ensure_for_match_reftest("has_mfrac");</script>
</body>
</html>
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