55 lines
1.4 KiB
HTML
55 lines
1.4 KiB
HTML
<!DOCTYPE html>
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<html class=reftest-wait>
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<title>View transitions: use snapshot containing block for static position in iframe</title>
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<link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/#snapshot-containing-block-concept/">
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<link rel="match" href="snapshot-containing-block-static-iframe-ref.html">
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<script src="/common/reftest-wait.js"></script>
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<script src="/common/rendering-utils.js"></script>
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<style>
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#inner {
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width: 400px;
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height: 200px;
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}
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</style>
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<iframe id="inner" srcdoc="
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<style>
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body {
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height: 200vh;
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overflow: hidden;
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}
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::view-transition {
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position: static;
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display: block;
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width: 100%;
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height: 100%;
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background: limegreen;
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}
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::view-transition-group(*),
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::view-transition-image-pair(*),
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::view-transition-old(*),
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::view-transition-new(*) {
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animation-play-state: paused;
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}
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</style>
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<body></body>
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"></iframe>
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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.
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inner.contentWindow.scrollTo(0, 100);
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await waitForAtLeastOneFrame();
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const contentDocument = inner.contentDocument;
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let vt = inner.contentDocument.startViewTransition();
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await vt.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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