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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /scroll-animations/css/view-timeline-range-update-reversed-animation.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html class="reftest-wait">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Update timeline range on reversed animation refTest</title>
<link rel="match" href="./animation-update-ref.html?translate=60px">
<script src="/web-animations/testcommon.js"></script>
</head>
<style type="text/css">
@keyframes anim {
from { transform: translateX(100px) }
to { transform: translateX(0px) }
}
#scroller {
border: 1px solid black;
overflow: hidden;
width: 300px;
height: 200px;
}
#target {
margin-bottom: 800px;
margin-top: 800px;
margin-left: 10px;
margin-right: 10px;
width: 100px;
height: 100px;
z-index: -1;
background-color: green;
animation: anim auto linear;
animation-timeline: --timeline;
view-timeline: --timeline;
}
#target.exit-range {
animation-range-start: exit 0%;
animation-range-end: exit 100%;
}
</style>
<body>
<div id="scroller">
<div id="target"></div>
</div>
</body>
<script type="text/javascript">
document.documentElement.addEventListener('TestRendered', async () => {
runTest();
}, { once: true });
async function runTest() {
await waitForCompositorReady();
const anim = target.getAnimations()[0];
// If animation-duration:auto is not supported, getAnimations() may not
// return this animation.
if (typeof anim !== 'undefined') {
anim.playbackRate = -1;
// Scroll to exit 60%.
scroller.scrollTop = 860;
await waitForNextFrame();
// Update the animation range.
target.classList.add('exit-range');
await waitForNextFrame();
}
// Make sure change to animation range was properly picked up.
document.documentElement.classList.remove("reftest-wait");
}
</script>
</body>
</html>