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Test Info:
- Manifest: layout/reftests/transform/reftest.list
<!DOCTYPE html>
<html class="reftest-wait reftest-no-flush">
<meta name="viewport" content="width=device-width,minimum-scale=1,initial-scale=1">
<!--
Another variant of partial-prerender-translate-2.html, but the transform
animation is scaled by the parent element.
-->
<style>
html {
overflow: hidden;
}
body {
margin: 0px;
padding: 0px;
}
@keyframes anim {
/* translate to a position where the left edge of partial pre-rendered on */
/* the left edge of the viewport. */
0% { transform: translateX(-649px); }
100% { transform: translateX(-2000px); }
}
#target {
width: 4000px;
height: 2000px;
position: absolute;
transform: translateX(0);
}
</style>
<div style="transform: scale(0.5); transform-origin: 0 0">
<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.
-->
<rect fill="green" x="0" width="2250" height="2000"></rect>
<rect fill="red" x="2250" width="1750" height="2000"></rect>
</svg>
</div>
</div>
<script>
document.addEventListener("MozReftestInvalidate", () => {
target.style.animation = "anim 10s 1s";
target.addEventListener("animationstart", () => {
// Wait a second to make sure the animation gets stucked (i.e. jank) at the
// boundary (650px).
setTimeout(() => {
document.documentElement.classList.remove("reftest-wait");
}, 1000);
});
}, { once: true });
</script>
</html>