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<!DOCTYPE html>
<html class="reftest-wait reftest-no-flush">
<head>
<title>Scroll the scroll-driven animation from the active phase to delay</title>
<style>
@keyframes anim {
from { translate: 100px; }
to { translate: 200px; }
}
#scroller {
width: 100px;
height: 100px;
overflow: scroll;
scrollbar-width: none;
scroll-timeline: scroll_timeline;
}
#target {
width: 100px;
height: 100px;
background: green;
rotate: 45deg;
translate: 50px;
animation-name: anim;
animation-duration: 5s;
animation-timing-function: linear;
animation-delay: 5s;
animation-timeline: scroll_timeline;
}
</style>
<script>
window.addEventListener("MozReftestInvalidate", async () => {
const scroller = document.getElementById("scroller");
scroller.scrollTop = 75;
// Wait for the MozAfterPaint to make the view id of |scroller| gets ready.
window.addEventListener('MozAfterPaint', async () => {
let utils = SpecialPowers.wrap(window).windowUtils;
utils.setAsyncScrollOffset(scroller, 0, -50);
await new Promise(function(resolve, reject) {
let repaintDone = function() {
SpecialPowers.Services.obs.removeObserver(
repaintDone,
"apz-repaints-flushed"
);
resolve();
};
SpecialPowers.Services.obs.addObserver(repaintDone,
"apz-repaints-flushed");
if (!utils.flushApzRepaints()) {
repaintDone();
}
});
// Wait for composition and then take the snapshot.
await new Promise(resolve => { requestAnimationFrame(resolve); });
await new Promise(resolve => { requestAnimationFrame(resolve); });
document.documentElement.classList.remove('reftest-wait');
}, {once: true});
});
</script>
</head>
<body>
<div id="scroller">
<div style="height: 100px; padding-bottom: 100px;"></div>
</div>
<div id="target"></div>
</body>
</html>
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