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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>View Timeline attached to an SVG graphics element in a nested <svg></title>
</head>
<style type="text/css">
@keyframes stroke {
from { stroke: rgb(0, 0, 254); }
to { stroke: rgb(0, 128, 0); }
}
#line {
animation: stroke auto linear both;
animation-timeline: view();
animation-range: exit-crossing;
}
.spacer {
height: 100vh;
}
</style>
<body>
<svg width="100" height="3000" stroke="red" stroke-width="5">
<svg>
<path id="line" d="M 50 0 V 3000"></path>
</svg>
</svg>
<div class="spacer"></div>
</body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/web-animations/testcommon.js"></script>
<script>
promise_test(async t => {
const scroller = document.scrollingElement;
const target = document.getElementById('line');
const anim = target.getAnimations()[0];
await anim.ready;
assert_equals(getComputedStyle(target).stroke, 'rgb(0, 0, 254)');
scroller.scrollTop =
0.5*(scroller.scrollHeight - scroller.clientHeight);
await waitForNextFrame();
assert_equals(getComputedStyle(target).stroke, 'rgb(0, 64, 127)');
}, 'View timeline attached to SVG graphics element');
</script>
</html>
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