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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>fractions linethickness</title>
<link rel="help" href="https://w3c.github.io/mathml-core/#fractions-mfrac">
<link rel="help" href="https://w3c.github.io/mathml-core/#dom-and-javascript">
<meta name="assert" content="Verifies fraction with positive, negative, percent and named space linethickness values.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/mathml/support/feature-detection.js"></script>
<script src="/mathml/support/fonts.js"></script>
<style type="text/css">
@font-face {
font-family: TestFont;
src: url("/fonts/math/fraction-rulethickness10000.woff");
}
math {
/* FractionRuleThickness = 10000 * 10 / 1000 = 100px; */
font-family: "TestFont";
font-size: 10px;
}
</style>
<script>
function LineThickness(aId) {
var mfrac = document.getElementById(aId);
var numBox = mfrac.firstElementChild.getBoundingClientRect();
var denumBox = mfrac.lastElementChild.getBoundingClientRect();
return denumBox.top - numBox.bottom;
}
setup({ explicit_done: true });
window.addEventListener("load", () => { loadAllFonts().then(runTests); });
function runTests() {
var defaultRuleThickness = 100;
var epsilon = 2;
test(function() {
assert_true(MathMLFeatureDetection.has_mspace());
assert_approx_equals(LineThickness("positive"), 5.67 * 10, epsilon);
}, "Positive");
test(function() {
assert_true(MathMLFeatureDetection.has_mspace());
/* Negative values are treated as 0 */
assert_approx_equals(LineThickness("negative"), 0, epsilon);
}, "Negative");
test(function() {
assert_true(MathMLFeatureDetection.has_mspace());
assert_approx_equals(LineThickness("percent"), defaultRuleThickness * 234 / 100, epsilon);
}, "Percentage");
test(function() {
assert_true(MathMLFeatureDetection.has_mspace());
/* Namedspace values are invalid in MathML Core. */
assert_approx_equals(LineThickness("namedspace"), defaultRuleThickness, epsilon);
}, "Named space");
test(function() {
assert_true(MathMLFeatureDetection.has_mspace());
/* Calc() expressions are invalid in MathML Core. */
assert_approx_equals(LineThickness("calc"), defaultRuleThickness, epsilon);
}, "Calc() expression");
test(function() {
assert_true(MathMLFeatureDetection.has_mspace());
document.getElementById("dynamic-attach").setAttribute("linethickness", "400%");
document.getElementById("dynamic-modify").setAttribute("linethickness", "200%");
document.getElementById("dynamic-remove").removeAttribute("linethickness");
assert_approx_equals(LineThickness("dynamic-attach"), defaultRuleThickness * 4, epsilon, "attach");
assert_approx_equals(LineThickness("dynamic-modify"), defaultRuleThickness * 2, epsilon, "modify");
assert_approx_equals(LineThickness("dynamic-remove"), defaultRuleThickness, epsilon, "remove");
}, "Dynamic linethickness");
done();
}
</script>
</head>
<body>
<math>
<mfrac id="positive" linethickness="5.67em">
<mspace width="20px" height="10px" style="background: blue"></mspace>
<mspace width="20px" height="10px" style="background: cyan"></mspace>
</mfrac>
</math>
<math>
<mfrac id="negative" linethickness="-1.23em">
<mspace width="20px" height="10px" style="background: blue"></mspace>
<mspace width="20px" height="10px" style="background: cyan"></mspace>
</mfrac>
</math>
<math>
<mfrac id="percent" linethickness="234%">
<mspace width="20px" height="10px" style="background: blue"></mspace>
<mspace width="20px" height="10px" style="background: cyan"></mspace>
</mfrac>
</math>
<math>
<mfrac id="namedspace" linethickness="veryverythickmathspace">
<mspace width="20px" height="10px" style="background: blue"></mspace>
<mspace width="20px" height="10px" style="background: cyan"></mspace>
</mfrac>
</math>
<math>
<mfrac id="calc" linethickness="calc(20px)">
<mspace width="20px" height="10px" style="background: blue"></mspace>
<mspace width="20px" height="10px" style="background: cyan"></mspace>
</mfrac>
</math>
<math>
<mfrac id="dynamic-attach">
<mspace width="20px" height="10px" style="background: blue"></mspace>
<mspace width="20px" height="10px" style="background: cyan"></mspace>
</mfrac>
</math>
<math>
<mfrac id="dynamic-modify" linethickness="300%">
<mspace width="20px" height="10px" style="background: blue"></mspace>
<mspace width="20px" height="10px" style="background: cyan"></mspace>
</mfrac>
</math>
<math>
<mfrac id="dynamic-remove" linethickness="300%">
<mspace width="20px" height="10px" style="background: blue"></mspace>
<mspace width="20px" height="10px" style="background: cyan"></mspace>
</mfrac>
</math>
</body>
</html>
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