73 lines
2 KiB
HTML
73 lines
2 KiB
HTML
<!DOCTYPE html>
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<html class=reftest-wait>
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<title>View transitions: new element is modified while offscren and brought onscreen using pseudo</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:khushalsagar@chromium.org">
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<link rel="match" href="offscreen-element-modified-before-coming-onscreen-ref.html">
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<script src="/common/reftest-wait.js"></script>
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<style>
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#target {
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width: 100px;
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height: 100px;
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view-transition-name: target;
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position: fixed;
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background: green;
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left: 0;
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top: 200vh;
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}
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.hidden {
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width: 10px;
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height: 10px;
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background: grey;
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view-transition-name: hidden;
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}
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.onscreen::view-transition-group(target) {
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transform: unset;
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position: fixed;
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top: 0;
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left: 0;
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animation: unset;
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}
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html::view-transition-group(hidden) { animation-duration: 300s; }
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html::view-transition-image-pair(hidden) { animation: unset; opacity: 0; }
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html::view-transition-old(target) { animation: unset; opacity: 0; }
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html::view-transition-new(target) { animation: unset; opacity: 1; }
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</style>
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<div id=target class=target>
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<div id=hidden class=hidden></div>
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<script>
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failIfNot(document.startViewTransition, "Missing document.startViewTransition");
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function bringOnscreenAndScreenshot() {
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document.documentElement.classList.add("onscreen");
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requestAnimationFrame(() => requestAnimationFrame(() =>
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requestAnimationFrame(() => requestAnimationFrame(takeScreenshot))
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));
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}
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async function runTest() {
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// Start the transition while the element is offscreen.
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let transition = document.startViewTransition();
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await transition.ready;
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// Change the element's color while its still offscreen.
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target.style.background = "blue";
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// Bring the element onscreen and ensure the color change is presented.
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requestAnimationFrame(() => requestAnimationFrame(() =>
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requestAnimationFrame(() => requestAnimationFrame(
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bringOnscreenAndScreenshot))
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));
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}
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onload = () => requestAnimationFrame(() => requestAnimationFrame(runTest));
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</script>
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