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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>width, height, inline-size and block-size</title>
<link rel="help" href="https://w3c.github.io/mathml-core/#layout-algorithms">
<meta name="assert" content="Verify that width, height, inline-size and block-size properties set the size of the content box.">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/mathml/support/feature-detection.js"></script>
<script src="/mathml/support/mathml-fragments.js"></script>
<script src="/mathml/support/box-comparison.js"></script>
<style>
/* Revert style specified in the UA style sheet that changes box size. */
merror { border: 0; }
mfrac { padding: 0; }
</style>
<script>
var epsilon = 1;
setup({ explicit_done: true });
window.addEventListener("load", runTests);
function runTests() {
for (tag in MathMLFragments) {
if (!FragmentHelper.isValidChildOfMrow(tag))
continue;
document.body.insertAdjacentHTML("beforeend", `<div style="position: absolute;"><math><mrow>${MathMLFragments[tag]}</mrow></math></div>`);
let div = document.body.lastElementChild;
let element = FragmentHelper.element(div.firstElementChild);
FragmentHelper.forceNonEmptyDescendants(element);
test(function() {
assert_true(MathMLFeatureDetection[`has_${tag}`](), `${tag} is supported`);
var style = `width: 500px; height: 400px;`;
element.setAttribute("style", style);
let box = element.getBoundingClientRect();
assert_approx_equals(box.width, 500, epsilon, "width");
assert_approx_equals(box.height, 400, epsilon, "height");
}, `width and height properties on ${tag}`);
test(function() {
assert_true(MathMLFeatureDetection[`has_${tag}`](), `${tag} is supported`);
var style = `inline-size: 600px; block-size: 700px;`;
element.setAttribute("style", style);
let box = element.getBoundingClientRect();
assert_approx_equals(box.width, 600, epsilon, "width");
assert_approx_equals(box.height, 700, epsilon, "height");
}, `inline-size and block-size properties on ${tag}`);
// Test that if we specify a size smaller than the content, then
// it is used too. Note that we skip mtable, which follows CSS
// tables rules and behave differently in that case.
if (tag != "mtable") {
test(function() {
assert_true(MathMLFeatureDetection[`has_${tag}`](), `${tag} is supported`);
var style = `width: 2px; height: 1px;`;
element.setAttribute("style", style);
let box = element.getBoundingClientRect();
assert_approx_equals(box.width, 2, epsilon, "width");
assert_approx_equals(box.height, 1, epsilon, "height");
}, `width and height properties on ${tag} (content overflowing)`);
}
div.style = "display: none;"; // Hide the div after measurement.
document.body.insertAdjacentHTML("beforeend", `<div style="position: absolute;"><div style="display: inline-block"><math><mrow>${MathMLFragments[tag]}</mrow></math></div></div>`);
let shrinkWrapDiv = document.body.lastElementChild.firstElementChild;
element = FragmentHelper.element(shrinkWrapDiv.firstElementChild);
FragmentHelper.forceNonEmptyDescendants(element);
test(function() {
assert_true(MathMLFeatureDetection[`has_${tag}`](), `${tag} is supported`);
var style = `width: 300px;`;
element.setAttribute("style", style);
let refPreferredWidth = 300;
// In the case of mo, spacing is added around the element so that it is included
// in the preferred width calculation, which should be the sum of lspace, rspace and width.
if (tag === "mo") {
element.setAttribute("lspace", "50px");
element.setAttribute("rspace", "30px");
refPreferredWidth = 380;
}
let box = shrinkWrapDiv.getBoundingClientRect();
assert_approx_equals(box.width, refPreferredWidth, epsilon);
}, `width property on ${tag} (preferred width)`);
div.style = "display: none;"; // Hide the div after measurement.
}
done();
}
</script>
</head>
<body>
<div id="log"></div>
</body>
</html>
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