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<!DOCTYPE html>
<html class=reftest-wait>
<title>View transitions: invalidating VT pseudo elements renders correctly</title>
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-1/">
<link rel="author" href="mailto:bokan@chromium.org">
<link rel="match" href="pseudo-rendering-invalidation-ref.html">
<meta name="fuzzy" content="maxDifference=0-20; totalPixels=0-300">
<script src="/common/reftest-wait.js"></script>
<style>
:root {
view-transition-name: none;
background-color: red;
}
div {
position: absolute;
left: 0px;
top: 600px;
width: 100px;
height: 100px;
display: flex;
justify-content: center;
flex-direction: column;
align-items: center;
background: darkseagreen;
}
::view-transition-group(*),
::view-transition-image-pair(*),
::view-transition-old(*),
::view-transition-new(*) {
animation-play-state: paused;
}
::view-transition {
background-color: limegreen;
}
::view-transition-new(new) {
animation: none;
opacity: 1;
}
::view-transition-old(new) {
animation: none;
opacity: 0;
}
::view-transition-new(old) {
animation: none;
opacity: 0;
}
::view-transition-old(old) {
animation: none;
opacity: 1;
}
.invalidateRoot::view-transition {
/* Making view-transition `display: none` will abort the transition. Changing
it to position: static (at least in Chrome) will cause it to rebuild its
layout tree. */
position: static;
}
.invalidateGroup::view-transition-group(group) {
display: none;
}
.invalidateImagePair::view-transition-image-pair(imagepair) {
display: none;
}
.invalidateNew::view-transition-new(new) {
display: none;
}
.invalidateOld::view-transition-old(old) {
display: none;
}
</style>
<div style="left: 0px; top: 100px; view-transition-name:group;">Group</div>
<div style="left: 150px; top: 100px; view-transition-name:imagepair;">Image-Pair</div>
<div style="left: 0px; top: 250px; view-transition-name:old;">Old</div>
<div style="left: 150px; top: 250px; view-transition-name:new;">New</div>
<script>
failIfNot(document.startViewTransition, "Missing document.startViewTransition");
async function rAF() {
return new Promise(resolve => requestAnimationFrame(resolve));
}
async function performInvalidations() {
await rAF();
await rAF();
const docClassList = document.documentElement.classList;
const classNames = [
'invalidateRoot', // Invalidates ::view-transition
'invalidateGroup', // Invalidates ::view-transition-group
'invalidateImagePair', // Invalidates ::view-transition-image-pair
'invalidateOld', // Invalidates ::view-transition-old
'invalidateNew' // Invalidates ::view-transition-new
];
for (let className of classNames) {
document.documentElement.classList.add(className);
await rAF();
document.documentElement.classList.remove(className);
await rAF();
}
}
// This test ensures each of the view-transition pseudos is able to be
// individually recreated after becoming display: none.
async function runTest() {
let transition = document.startViewTransition();
await transition.ready;
await performInvalidations();
takeScreenshot();
}
onload = () => requestAnimationFrame(() => requestAnimationFrame(runTest));
</script>
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