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underover-parameters-4.html
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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Underscripts and Overscripts parameters</title>
<link rel="help" href="http://www.mathml-association.org/MathMLinHTML5/S3.html#SS4">
<meta name="assert" content="Elements munder, mover, munderover correctly use underbar/overbar and AccentBaseHeight parameters from the MATH table.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
math, mspace, mo {
font-size: 10px;
}
@font-face {
font-family: accentbaseheight4000underbarextradescender5000;
src: url("/fonts/math/underover-accentbaseheight4000-underbarextradescender5000.woff");
}
@font-face {
font-family: accentbaseheight4000underbarverticalgap7000;
src: url("/fonts/math/underover-accentbaseheight4000-underbarverticalgap7000.woff");
}
@font-face {
font-family: accentbaseheight4000overbarextraascender3000;
src: url("/fonts/math/underover-accentbaseheight4000-overbarextraascender3000.woff");
}
@font-face {
font-family: accentbaseheight4000overbarverticalgap11000;
src: url("/fonts/math/underover-accentbaseheight4000-overbarverticalgap11000.woff");
}
</style>
<script>
var emToPx = 10 / 1000; // font-size: 10px, font.em = 1000
var epsilon = 2;
var axisBaseHeight = 4000 * emToPx;
var shortBaseHeight = 3000 * emToPx; // shortBaseHeight < axisBaseHeight
var tallBaseHeight = 5000 * emToPx; // tallBaseHeight > axisBaseHeight
function getBox(aId) {
return document.getElementById(aId).getBoundingClientRect();
}
setup({ explicit_done: true });
window.addEventListener("load", function() {
document.fonts.ready.then(runTests);
});
function runTests() {
test(function() {
for (var i = 1; i <= 4; i++) {
for (var j = 1; j <= 6; j++) {
var baseId = ("base00" + i) + j;
assert_approx_equals(getBox("ref00" + i).bottom,
getBox(baseId).bottom,
epsilon,
"alignment of " + baseId);
}
}
}, "Baseline alignment");
test(function() {
for (var i = 1; i <= 4; i++) {
for (var j = 1; j <= 6; j++) {
var baseId = ("base00" + i) + j;
assert_approx_equals(getBox(baseId).height,
j == 2 || j == 5 ?
tallBaseHeight :shortBaseHeight,
epsilon,
"height of " + baseId);
}
}
}, "Heights of bases");
test(function() {
var v = 5000 * emToPx;
assert_approx_equals(getBox("ref001").bottom - getBox("over0014").bottom,
shortBaseHeight, epsilon,
"munderover: nonaccent over short base");
assert_approx_equals(getBox("ref001").bottom - getBox("over0015").bottom,
tallBaseHeight, epsilon,
"munderover: accent over tall base");
assert_approx_equals(getBox("ref001").bottom - getBox("over0016").bottom,
axisBaseHeight, epsilon,
"munderover: accent over short base");
for (var j = 1; j <= 6; j++) {
var elId = "el001" + j;
var baseId = "base001" + j;
var underId = "under001" + j;
assert_approx_equals(getBox(underId).top - getBox(baseId).bottom,
0, epsilon,
"gap between " + baseId + " and " + underId);
assert_approx_equals(getBox(elId).bottom - getBox(underId).bottom,
v, epsilon,
"extra descender below " + underId);
}
}, "AccentBaseHeight, UnderbarExtraDescender");
test(function() {
var v = 7000 * emToPx;
assert_approx_equals(getBox("ref002").bottom - getBox("over0024").bottom,
shortBaseHeight, epsilon,
"munderover: nonaccent over short base");
assert_approx_equals(getBox("ref002").bottom - getBox("over0025").bottom,
tallBaseHeight, epsilon,
"munderover: accent over tall base");
assert_approx_equals(getBox("ref002").bottom - getBox("over0026").bottom,
axisBaseHeight, epsilon,
"munderover: accent over short base");
for (var j = 1; j <= 6; j++) {
var elId = "el002" + j;
var baseId = "base002" + j;
var underId = "under002" + j;
var gap = (j == 2 || j == 3 ? 0 : v);
assert_approx_equals(getBox(underId).top - getBox(baseId).bottom,
gap, epsilon,
"gap between " + baseId + " and " + underId);
}
}, "AccentBaseHeight, UnderbarVerticalGap");
test(function() {
var v = 3000 * emToPx;
assert_approx_equals(getBox("ref003").bottom - getBox("over0031").bottom,
shortBaseHeight, epsilon,
"mover: nonaccent over short base");
assert_approx_equals(getBox("ref003").bottom - getBox("over0032").bottom,
tallBaseHeight, epsilon,
"mover: accent over tall base");
assert_approx_equals(getBox("ref003").bottom - getBox("over0033").bottom,
axisBaseHeight, epsilon,
"mover: accent over short base");
assert_approx_equals(getBox("ref003").bottom - getBox("over0034").bottom,
shortBaseHeight, epsilon,
"munderover: nonaccent over short base");
assert_approx_equals(getBox("ref003").bottom - getBox("over0035").bottom,
tallBaseHeight, epsilon,
"munderover: accent over tall base");
assert_approx_equals(getBox("ref003").bottom - getBox("over0036").bottom,
axisBaseHeight, epsilon,
"munderover: accent over short base");
for (var j = 1; j <= 6; j++) {
var elId = "el003" + j;
var baseId = "base003" + j;
if (j >= 4) {
var underId = "under003" + j;
assert_approx_equals(getBox(underId).top - getBox(baseId).bottom,
0, epsilon,
"gap between " + baseId + " and " + underId);
}
var overId = "over003" + j;
assert_approx_equals(getBox(overId).top - getBox(elId).top,
v, epsilon,
"extra ascender below " + overId);
}
}, "AccentBaseHeight, OverbarExtraAscender");
test(function() {
v = 11000 * emToPx;
assert_approx_equals(getBox("ref004").bottom - getBox("over0041").bottom,
shortBaseHeight + v, epsilon,
"mover: nonaccent over short base");
assert_approx_equals(getBox("ref004").bottom - getBox("over0042").bottom,
tallBaseHeight, epsilon,
"mover: accent over tall base");
assert_approx_equals(getBox("ref004").bottom - getBox("over0043").bottom,
axisBaseHeight, epsilon,
"mover: accent over short base");
assert_approx_equals(getBox("ref004").bottom - getBox("over0044").bottom,
shortBaseHeight + v, epsilon,
"munderover: nonaccent over short base");
assert_approx_equals(getBox("ref004").bottom - getBox("over0045").bottom,
tallBaseHeight, epsilon,
"munderover: accent over tall base");
assert_approx_equals(getBox("ref004").bottom - getBox("over0046").bottom,
axisBaseHeight, epsilon,
"munderover: accent over short base");
for (var j = 4; j <= 6; j++) {
var baseId = "base004" + j;
var underId = "under004" + j;
assert_approx_equals(getBox(underId).top - getBox(baseId).bottom,
0, epsilon,
"gap between " + baseId + " and " + underId);
}
}, "AccentBaseHeight, OverbarVerticalGap");
done();
}
</script>
</head>
<body>
<p>
<math style="font-family: accentbaseheight4000underbarextradescender5000;">
<mspace id="ref001" height="1em" width="3em" mathbackground="green"/>
<munder mathbackground="cyan" id="el0011">
<mspace id="base0011" height="3em" width="1em" mathbackground="black"/>
<mo id="under0011" mathcolor="blue">°</mo>
</munder>
<munder mathbackground="cyan" id="el0012">
<mspace id="base0012" height="5em" width="1em" mathbackground="black"/>
<mo id="under0012" mathcolor="blue">˘</mo>
</munder>
<munder mathbackground="cyan" id="el0013">
<mspace id="base0013" height="3em" width="1em" mathbackground="black"/>
<mo id="under0013" mathcolor="blue">˘</mo>
</munder>
<munderover mathbackground="cyan" id="el0014">
<mspace id="base0014" height="3em" width="1em" mathbackground="black"/>
<mo id="under0014" mathcolor="blue">°</mo>
<mo id="over0014" mathcolor="red">°</mo>
</munderover>
<munderover mathbackground="cyan" id="el0015" accent="true">
<mspace id="base0015" height="5em" width="1em" mathbackground="black"/>
<mo id="under0015" mathcolor="blue">˘</mo>
<mo id="over0015" mathcolor="red">˘</mo>
</munderover>
<munderover mathbackground="cyan" id="el0016" accent="true">
<mspace id="base0016" height="3em" width="1em" mathbackground="black"/>
<mo id="under0016" mathcolor="blue">˘</mo>
<mo id="over0016" mathcolor="red">˘</mo>
</munderover>
</math>
</p>
<hr/>
<p>
<math style="font-family: accentbaseheight4000underbarverticalgap7000;">
<mspace id="ref002" height="1em" width="3em" mathbackground="green"/>
<munder mathbackground="cyan" id="el0021" accentunder="false">
<mspace id="base0021" height="3em" width="1em" mathbackground="black"/>
<mo id="under0021" mathcolor="blue">˘</mo>
</munder>
<munder mathbackground="cyan" id="el0022">
<mspace id="base0022" height="5em" width="1em" mathbackground="black"/>
<mo id="under0022" mathcolor="blue" accent="true">˘</mo>
</munder>
<munder mathbackground="cyan" id="el0023">
<mspace id="base0023" height="3em" width="1em" mathbackground="black"/>
<mo id="under0023" mathcolor="blue" accent="true">°</mo>
</munder>
<munderover mathbackground="cyan" id="el0024">
<mspace id="base0024" height="3em" width="1em" mathbackground="black"/>
<mo id="under0024" mathcolor="blue" accent="false">˘</mo>
<mo id="over0024" mathcolor="red" accent="false">˘</mo>
</munderover>
<munderover mathbackground="cyan" id="el0025">
<mspace id="base0025" height="5em" width="1em" mathbackground="black"/>
<mo id="under0025" mathcolor="blue" accent="false">˘</mo>
<mo id="over0025" mathcolor="red">˘</mo>
</munderover>
<munderover mathbackground="cyan" id="el0026">
<mspace id="base0026" height="3em" width="1em" mathbackground="black"/>
<mo id="under0026" mathcolor="blue" accent="false">˘</mo>
<mo id="over0026" mathcolor="red">˘</mo>
</munderover>
</math>
</p>
<hr/>
<p>
<math style="font-family: accentbaseheight4000overbarextraascender3000;">
<mspace id="ref003" height="1em" width="3em" mathbackground="green"/>
<mover mathbackground="cyan" id="el0031">
<mspace id="base0031" height="3em" width="1em" mathbackground="black"/>
<mo id="over0031" mathcolor="red">°</mo>
</mover>
<mover mathbackground="cyan" id="el0032" accent="true">
<mspace id="base0032" height="5em" width="1em" mathbackground="black"/>
<mo id="over0032" mathcolor="red">°</mo>
</mover>
<mover mathbackground="cyan" id="el0033">
<mspace id="base0033" height="3em" width="1em" mathbackground="black"/>
<mo id="over0033" mathcolor="red">˘</mo>
</mover>
<munderover mathbackground="cyan" id="el0034">
<mspace id="base0034" height="3em" width="1em" mathbackground="black"/>
<mo id="under0034" mathcolor="blue">°</mo>
<mo id="over0034" mathcolor="red" accent="false">˘</mo>
</munderover>
<munderover mathbackground="cyan" id="el0035" accent="true">
<mspace id="base0035" height="5em" width="1em" mathbackground="black"/>
<mo id="under0035" mathcolor="blue">˘</mo>
<mo id="over0035" mathcolor="red">˘</mo>
</munderover>
<munderover mathbackground="cyan" id="el0036" accent="true">
<mspace id="base0036" height="3em" width="1em" mathbackground="black"/>
<mo id="under0036" mathcolor="blue">˘</mo>
<mo id="over0036" mathcolor="red">˘</mo>
</munderover>
</math>
</p>
<hr/>
<p>
<math style="font-family: accentbaseheight4000overbarverticalgap11000;">
<mspace id="ref004" height="1em" width="3em" mathbackground="green"/>
<mover mathbackground="cyan" id="el0041">
<mspace id="base0041" height="3em" width="1em" mathbackground="black"/>
<mo id="over0041" mathcolor="red">°</mo>
</mover>
<mover mathbackground="cyan" id="el0042" accent="true">
<mspace id="base0042" height="5em" width="1em" mathbackground="black"/>
<mo id="over0042" mathcolor="red">°</mo>
</mover>
<mover mathbackground="cyan" id="el0043">
<mspace id="base0043" height="3em" width="1em" mathbackground="black"/>
<mo id="over0043" mathcolor="red">˘</mo>
</mover>
<munderover mathbackground="cyan" id="el0044">
<mspace id="base0044" height="3em" width="1em" mathbackground="black"/>
<mo id="under0044" mathcolor="blue">°</mo>
<mo id="over0044" mathcolor="red" accent="false">˘</mo>
</munderover>
<munderover mathbackground="cyan" id="el0045" accent="true">
<mspace id="base0045" height="5em" width="1em" mathbackground="black"/>
<mo id="under0045" mathcolor="blue">˘</mo>
<mo id="over0045" mathcolor="red">˘</mo>
</munderover>
<munderover mathbackground="cyan" id="el0046" accent="true">
<mspace id="base0046" height="3em" width="1em" mathbackground="black"/>
<mo id="under0046" mathcolor="blue">˘</mo>
<mo id="over0046" mathcolor="red">˘</mo>
</munderover>
</math>
</p>
<hr/>
</body>
</html>