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content-visibility-auto-shared-element.html
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<!DOCTYPE html>
<html class=reftest-wait>
<title>View transitions: offscreen content with content-visibility auto</title>
<link rel="help" href="https://github.com/WICG/view-transitions">
<link rel="author" href="mailto:vmpstr@chromium.org">
<link rel="match" href="content-visibility-auto-shared-element-ref.html">
<script src="/common/reftest-wait.js"></script>
<style>
body {
overflow: hidden;
}
.flex {
display: flex;
flex-direction: row;
justify-content: flex-start;
align-items: flex-start;
}
.box {
width: 100px;
height: 500px;
contain: paint;
}
.shared {
background: green;
border: 1px solid black;
box-sizing: border-box;
}
.spacer {
height: 3000px;
}
#hidden {
width: 10px;
height: 10px;
background: red;
contain: paint;
view-transition-name: hidden;
}
.locked {
content-visibility: auto;
contain-intrinsic-size: 500px;
}
html::view-transition-group(hidden) { animation-duration: 300s; }
html::view-transition-image-pair(hidden) { visibility: hidden; }
html::view-transition-group(*) { animation-duration: 0s; }
html::view-transition-new(*) { animation: unset; opacity: 0; }
html::view-transition-old(*) { animation: unset; opacity: 1; }
html::view-transition-group(root) { display: none; }
html::view-transition { background: pink }
</style>
<div class=flex>
<div id=dst1 class=box></div>
<div id=dst2 class=box></div>
<div id=dst3 class=box></div>
</div>
<div id=hidden></div>
<div class=spacer></div>
<div id=content>
<div id=lockme><div id=src1 class="box shared" style="view-transition-name: one">ancestor c-v</div></div>
<div id=src2 class="box shared locked" style="view-transition-name: two">self c-v</div>
<div id=src3 class="box shared" style="view-transition-name: three"><div class=locked>descendant c-v</div></div>
</div>
<script>
failIfNot(document.startViewTransition, "Missing document.startViewTransition");
async function runTest() {
lockme.classList.add("locked");
document.startViewTransition(() => {
content.remove();
dst1.style = "view-transition-name: one";
dst2.style = "view-transition-name: two";
dst3.style = "view-transition-name: three";
requestAnimationFrame(() => requestAnimationFrame(takeScreenshot));
});
}
onload = () => requestAnimationFrame(() => requestAnimationFrame(runTest));
</script>