83 lines
1.8 KiB
HTML
83 lines
1.8 KiB
HTML
<!DOCTYPE html>
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<html class=reftest-wait>
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<title>View transitions: use snapshot containing block for absolute position</title>
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<link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/">
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<link rel="author" href="mailto:bokan@chromium.org">
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<link rel="match" href="snapshot-containing-block-absolute-ref.html">
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<meta name="fuzzy" content="maxDifference=0-20; totalPixels=0-100">
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<script src="/common/reftest-wait.js"></script>
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<style>
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:root {
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view-transition-name: none;
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background-color: red;
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}
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body {
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height: 400vh;
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}
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#target {
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position: absolute;
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left: 0px;
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top: 600px;
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width: 100px;
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height: 100px;
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display: flex;
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justify-content: center;
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flex-direction: column;
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align-items: center;
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background: darkseagreen;
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view-transition-name: target;
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}
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::view-transition-group(target) {
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animation-duration: 50s;
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animation-play-state: paused;
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top: unset;
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left: unset;
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right: 0px;
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bottom: 0px;
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}
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::view-transition {
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position: absolute;
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left: 20px;
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top: 40px;
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width: 700px;
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height: 500px;
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background-color: limegreen;
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}
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::view-transition-old(*) {
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animation: unset;
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opacity: 1;
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}
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::view-transition-new(*) {
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animation: unset;
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opacity: 0;
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}
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</style>
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<div id="target">TARGET</div>
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<script>
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failIfNot(document.startViewTransition, "Missing document.startViewTransition");
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async function runTest() {
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// Start the view transition at a scroll offset so that the snapshot
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// containing block differs from the initial containing block. Scroll so that
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// the target is at 0,0 so its transition group has an identity transform.
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const scrollTargetY = document.getElementById('target').offsetTop;
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window.scrollTo(0, scrollTargetY);
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let transition = document.startViewTransition();
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await transition.ready;
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takeScreenshot();
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}
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onload = () => requestAnimationFrame(() => requestAnimationFrame(runTest));
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</script>
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