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- This WPT test may be referenced by the following Test IDs:
- /css/css-highlight-api/highlight-pseudo-from-font-computed.html - WPT Dashboard Interop Dashboard
<!doctype html>
<meta charset="utf-8">
<title>CSS ::highlight Pseudo-Element Test: ::highlight selector getComputedStyle</title>
<meta name="assert" value="Font relative units are correctly reported in getComputedStyle">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
:root {
font-size: 16px;
}
div {
margin: 40px;
font-size: 20px;
}
::highlight(highlight1) {
text-underline-offset: 0.5em;
text-decoration-line: underline;
text-decoration-color: green;
text-decoration-thickness: 0.25rem;
}
#h2::highlight(highlight1) {
text-underline-offset: 1.0em;
text-decoration-line: underline;
text-decoration-color: blue;
text-decoration-thickness: 0.125rem;
}
</style>
<div id="h1">A green 10px offset underline 4px thick</div>
<div id="h2">A blue 20px offset underline 2px thick</div>
<script>
let r1 = new Range();
r1.setStart(h1, 0);
r1.setEnd(h1, 1);
let r2 = new Range();
r2.setStart(h2, 0);
r2.setEnd(h2, 1);
CSS.highlights.set("highlight1", new Highlight(r1, r2));
let highlightPseudo = "::highlight(highlight1)";
test(() => {
let style = getComputedStyle(document.documentElement, highlightPseudo);
assert_equals(style.textUnderlineOffset, "8px", "Text underline offset is 8px.");
assert_equals(style.textDecorationThickness, "4px", "Text decoration thickness is 4px.");
}, `getComputedStyle() for root element`);
test(() => {
let style = getComputedStyle(h1, highlightPseudo);
assert_equals(style.textUnderlineOffset, "10px", "Text underline offset is 10px.");
assert_equals(style.textDecorationThickness, "4px", "Text decoration thickness is 4px.");
}, `getComputedStyle() for root highlight applied to div`);
test(() => {
let style = getComputedStyle(h2, highlightPseudo);
assert_equals(style.textUnderlineOffset, "20px", "Text underline offset is 20px.");
assert_equals(style.textDecorationThickness, "2px", "Text decoration thickness is 2px.");
}, `getComputedStyle() for div specific highlight`);
</script>