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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Dynamic stretch properties</title>
<link rel="stylesheet" type="text/css" href="/fonts/ahem.css" />
<link rel="help" href="https://w3c.github.io/mathml-core/#dictionary-based-attributes">
<meta name="assert" content="Verify stretchy, symmetric, largeop, minsize and maxsize are updated dynamically.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/mathml/support/fonts.js"></script>
<style>
math {
font: 25px/1 Ahem;
}
@font-face {
font-family: operators;
src: url("/fonts/math/operators.woff");
}
mo {
font-family: operators;
}
</style>
<script>
setup({ explicit_done: true });
window.addEventListener("load", () => { loadAllFonts().then(runTests); });
function runTests() {
var epsilon = 1;
var emToPx = 25;
var element;
test(function() {
element = document.getElementById("minsize_attach");
element.setAttribute("minsize", "4em");
assert_approx_equals(element.getBoundingClientRect().height, 4 * emToPx, epsilon, "attach");
element = document.getElementById("minsize_modify");
element.setAttribute("minsize", "5em");
assert_approx_equals(element.getBoundingClientRect().height, 5 * emToPx, epsilon, "modify");
element = document.getElementById("minsize_remove");
element.removeAttribute("minsize");
const unstretched_size = 1 * emToPx;
assert_approx_equals(element.getBoundingClientRect().height, unstretched_size, epsilon, "remove");
}, `minsize`);
test(function() {
element = document.getElementById("maxsize_attach");
element.setAttribute("maxsize", "4em");
assert_approx_equals(element.getBoundingClientRect().height, 4 * emToPx, epsilon, "attach");
element = document.getElementById("maxsize_modify");
element.setAttribute("maxsize", "5em");
assert_approx_equals(element.getBoundingClientRect().height, 5 * emToPx, epsilon, "modify");
element = document.getElementById("maxsize_remove");
element.removeAttribute("maxsize");
assert_approx_equals(element.getBoundingClientRect().height, 6 * emToPx, epsilon, "remove");
}, `maxsize`);
test(function() {
element = document.getElementById("largeop_set_true");
element.setAttribute("largeop", "true");
assert_approx_equals(element.getBoundingClientRect().height, 2 * emToPx, epsilon, "set true");
element = document.getElementById("largeop_set_false");
element.setAttribute("largeop", "false");
assert_approx_equals(element.getBoundingClientRect().height, 1 * emToPx, epsilon, "set false");
}, `largeop`);
test(function() {
element = document.getElementById("symmetric_set_true");
element.setAttribute("symmetric", "true");
assert_approx_equals(element.getBoundingClientRect().height, 6 * emToPx, epsilon, "set true");
element = document.getElementById("symmetric_set_false");
element.setAttribute("symmetric", "false");
assert_approx_equals(element.getBoundingClientRect().height, 3 * emToPx, epsilon, "set false");
}, `symmetric`);
test(function() {
element = document.getElementById("stretchy_set_true");
element.setAttribute("stretchy", "true");
assert_approx_equals(element.getBoundingClientRect().height, 3 * emToPx, epsilon, "set true");
element = document.getElementById("stretchy_set_false");
element.setAttribute("stretchy", "false");
assert_approx_equals(element.getBoundingClientRect().height, 1 * emToPx, epsilon, "set false");
}, `stretchy`);
done();
}
</script>
</head>
<body>
<div id="log"></div>
<p>
<math>
<mrow>
<mspace width="1em" height="1em" style="background: blue"/>
<mo id="minsize_attach" stretchy="true" symmetric="false">⥯</mo>
<mo id="minsize_modify" minsize="3em" stretchy="true" symmetric="false">⥯</mo>
<mo id="minsize_remove" minsize="2em" stretchy="true" symmetric="false">⥯</mo>
<mn><!-- not space like --></mn>
</mrow>
</math>
</p>
<p>
<math>
<mrow>
<mspace width="1em" height="6em" style="background: blue"/>
<mo id="maxsize_attach" stretchy="true" symmetric="false">⥯</mo>
<mo id="maxsize_modify" maxsize="3em" stretchy="true" symmetric="false">⥯</mo>
<mo id="maxsize_remove" maxsize="2em" stretchy="true" symmetric="false">⥯</mo>
<mn><!-- not space like --></mn>
</mrow>
</math>
</p>
<p>
<math displaystyle="true">
<mspace width="1em" height="1em" style="background: blue"/>
<mrow>
<mo id="largeop_set_true" largeop="false" stretchy="false">⥯</mo>
<mn><!-- not space like --></mn>
</mrow>
<mrow>
<mo id="largeop_set_false" largeop="true" stretchy="false">⥯</mo>
<mn><!-- not space like --></mn>
</mrow>
</math>
</p>
<p>
<math>
<mrow>
<mspace width="1em" height="3em" style="background: blue"/>
<mo id="symmetric_set_true" symmetric="false" stretchy="true">⥯</mo>
<mo id="symmetric_set_false" symmetric="true" stretchy="true">⥯</mo>
<mn><!-- not space like --></mn>
</mrow>
</math>
</p>
<p>
<math>
<mrow>
<mspace width="1em" height="3em" style="background: blue"/>
<mo id="stretchy_set_true" symmetric="false" stretchy="false">⥯</mo>
<mo id="stretchy_set_false" symmetric="false" stretchy="true">⥯</mo>
<mn><!-- not space like --></mn>
</mrow>
</math>
</p>
</body>
</html>
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