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<!DOCTYPE html>
<html class="test-wait">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="help" href="https://crbug.com/391632970">
<title>clip path animation with a view timeline doesn't crash</title>
</head>
<style type="text/css">
.spacer {
height: 200vh;
}
@keyframes clip {
0% { clip-path: circle(50% at 50% 50%); }
50% { clip-path: circle(5% at 50% 50%); }
100% { clip-path: circle(50% at 50% 50%); }
}
#target {
height: 100px;
width: 100px;
clip-path: circle(50% at 50% 50%);
background-color: blue;
animation: clip auto linear;
animation-timeline: --t1;
view-timeline: --t1;
animation-range-start: cover 20%;
animation-range-end: cover 80%;
}
</style>
<body>
<div class="spacer"></div>
<div id="target"></div>
<div class="spacer"></div>
</body>
<script>
function raf() {
return new Promise(resolve => {
requestAnimationFrame(resolve);
});
}
window.onload = async () => {
await raf();
await raf();
const scroller = document.scrollingElement;
const spacer = document.querySelector('.spacer');
scroller.scrollTop = spacer.clientHeight;
const anim = document.getAnimations()[0];
anim.ready.then(async () => {
await raf();
await raf();
// Remove test-wait to indicate that the test is complete.
document.documentElement.className = "";
});
};
</script>
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