<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<title>MathML inside content-editable</title>
<link rel="help" href="https://w3c.github.io/mathml-core/#html-and-svg">
<meta name="assert" content="Verify that putting MathML inside a content-editable div shouldn't affect its layout.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/mathml/support/feature-detection.js"></script>
<script>
setup({ explicit_done: true });
window.addEventListener("DOMContentLoaded", function() {
var epsilon = 1;
var mfrac = document.getElementById("mfrac");
var num = mfrac.firstElementChild.getBoundingClientRect();
var denom = mfrac.lastElementChild.getBoundingClientRect();
test(function() {
assert_true(MathMLFeatureDetection.has_mspace());
assert_approx_equals(num.width, 30, epsilon, "numerator width");
assert_approx_equals(num.height, 40, epsilon, "numerator height");
assert_approx_equals(denom.width, 50, epsilon, "denominator width");
assert_approx_equals(denom.height, 60, epsilon, "denominator height");
}, "mspace layout in content-editable div");
test(function() {
assert_true(MathMLFeatureDetection.has_mfrac());
assert_greater_than_equal(denom.bottom - num.top,
(40 + 60),
"numerator is above the denominator");
assert_approx_equals((num.left + num.right) / 2,
(denom.left + denom.right) / 2,
epsilon, "numerator and denominator are horizontally aligned");
}, "mfrac layout in content-editable div");
done();
});
</script>
</head>
<body>
<div id="log"></div>
<div contenteditable="true">
This is
<math>
<mfrac id="mfrac">
<mspace width="30px" height="40px" style="background: cyan"></mspace>
<mspace width="50px" height="60px" style="background: yellow"></mspace>
</mfrac>
</math>
a content editable div
</div>
</body>
</html>
Codebase Browser
chromium