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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Radical parameters</title>
<link rel="help" href="https://w3c.github.io/mathml-core/#radicals-msqrt-mroot">
<meta name="assert" content="Test edge kerning values for radicals.">
<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>
@font-face {
font-family: radical-negativekernbeforedegree1000-rulethickness1000;
src: url("/fonts/math/radical-negativekernbeforedegree1000-rulethickness1000.woff");
}
@font-face {
font-family: radical-kernafterdegreeminus5000-rulethickness1000;
src: url("/fonts/math/radical-kernafterdegreeminus5000-rulethickness1000.woff");
}
math, mspace {
font-size: 10px;
}
mspace {
opacity: .5;
}
</style>
<script>
var emToPx = 10 / 1000; // font-size: 10px, font.em = 1000
var epsilon = 1;
function getBox(aId) {
return document.getElementById(aId).getBoundingClientRect();
}
function runTests() {
test(function() {
assert_true(MathMLFeatureDetection.has_mspace());
assert_approx_equals(getBox("index001").left - getBox("mroot001").left,
0, epsilon, "should be clamped to 0");
}, "RadicalKernBeforeDegree = -1em < 0");
test(function() {
assert_true(MathMLFeatureDetection.has_mspace());
var radicalSymbolWidth = 1000 * emToPx;
var radicalLeft = getBox("base002").left - radicalSymbolWidth;
assert_approx_equals(getBox("index002").right - radicalLeft,
30, epsilon, "should be clamped to 3em");
}, "RadicalKernBeforeAfterDegree = -5em < -3em = -degree's inline size");
done();
}
setup({ explicit_done: true });
window.addEventListener("load", () => { loadAllFonts().then(runTests); });
</script>
</head>
<body>
<div id="log"></div>
<p>
<math style="font-family: radical-negativekernbeforedegree1000-rulethickness1000">
<mroot id="mroot001">
<mspace id="base001" height="6em" width="6em" style="background: blue"/>
<mspace id="index001" height="6em" width="6em" style="background: green"/>
</mroot>
</math>
</p>
<hr/>
<p>
<math style="font-family: radical-kernafterdegreeminus5000-rulethickness1000">
<mroot id="mroot002">
<mspace id="base002" height="3em" width="3em" style="background: blue"/>
<mspace id="index002" height="3em" width="3em" style="background: green"/>
</mroot>
</math>
</p>
</body>
</html>
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