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<!DOCTYPE html>
<html class="reftest-wait reftest-no-flush">
<meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
<!--
A test case that the nearest oveflow:hidden scroll frame is the clip frame
for the partial pre-render transform animation.
-->
<style>
html, body {
margin: 0;
padding: 0;
}
#target {
width: 30000px;
height: 100px;
transform: translateX(-2500px);
/*
* 1s delay so that we can avoid undesired composition, i.e. the first
* composition on the composition would be the final transition value.
*/
transition: transform 100s step-start 1s;
}
</style>
<div style="width: 50%; overflow: hidden">
<div id="target">
<!--
Put an SVG element so that the transform display item has a blob on
WebRender which means this test properly fails without the proper fix.
-->
<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 30000 100">
<rect fill="green" x="2500" width="400" height="100"></rect>
<rect fill="blue" x="2900" width="100" height="100"></rect>
</svg>
</div>
</div>
<script>
document.addEventListener("MozReftestInvalidate", () => {
target.style.transform = "translateX(-2600px)";
target.addEventListener("transitionstart", () => {
// Wait a second to make sure the transition has been composited on the
// compositor.
setTimeout(() => {
document.documentElement.classList.remove("reftest-wait");
}, 1000);
});
}, { once: true });
</script>
</html>
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