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<!doctype HTML>
<html class="reftest-wait">
<meta charset="utf8">
<title>CSS Content Visibility: toggling auto with composited descedant</title>
<link rel="author" title="Vladimir Levin" href="mailto:vmpstr@chromium.org">
<link rel="help" href="https://drafts.csswg.org/css-contain/#content-visibility">
<link rel="match" href="content-visibility-074-ref.html">
<meta name="assert" content="after toggling content-visibility auto a few times, composited descedant is visible.">
<script src="/common/reftest-wait.js"></script>
<style>
#a { will-change: transform; }
#b { height: 15000px; }
#c {
width: 800px;
height: 600px;
}
#d {
will-change: transform;
top: 0px;
width: 500px;
height: 500px;
background: green;
}
.auto {
content-visibility: auto;
}
</style>
<div id="a">
</div>
<div id="b">
<div id="c" class=auto>
<div id="d"></div>
</div>
</div>
</div>
<script>
function runTest(step) {
if (step % 2 == 0) {
requestAnimationFrame(() => runTest(step + 1));
return;
}
switch(step) {
case 1:
document.getElementById("c").classList.remove("auto");
break;
case 3:
document.getElementById("c").classList.add("auto");
break;
case 5:
document.getElementById("c").classList.remove("auto");
break;
case 7:
document.getElementById("c").classList.add("auto");
break;
case 9:
takeScreenshot();
return;
}
requestAnimationFrame(() => runTest(step + 1));
}
window.onload = () => requestAnimationFrame(() => runTest(0));
</script>
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