Blitz - WPT: html-becomes-fixed.html

wpt / css / css-view-transitions / html-becomes-fixed.html

/css/css-view-transitions/html-becomes-fixed.html

<!DOCTYPE html>
<html id=r class=reftest-wait>
<head>
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-2/">
<link rel="match" href="html-becomes-fixed-ref.html">
<script src="/common/reftest-wait.js"></script>
<script src="/web-animations/testcommon.js"></script>
<style>

html { view-transition-name: none }
.f { position: fixed; background: #eee }
::view-transition-group(*) { animation-duration: 0s }
#part { position: absolute; left: 50px; top: 50px; width: 50px; height: 50px;
        padding: 5px; view-transition-name: p; background: #acf; }

</style>
</head>
<body>
<div id=part>A</div>
<script>

raf = () => new Promise(r => { requestAnimationFrame(r); });
async function runTest() {
  await waitForCompositorReady();

  const t = document.startViewTransition(() => { part.innerText = "B"; })
  await raf();
  await raf();
  r.classList.add("f");
  await t.finished;

  const t2 = document.startViewTransition(() => { part.innerText = "A"; });
  await t2.finished;

  await raf();
  takeScreenshot();
}
onload = () => runTest();

</script>
</body>
</html>

/css/css-view-transitions/html-becomes-fixed-ref.html

<!DOCTYPE html>
<html id=r class=f>
<head>
<style>

.f { position: fixed; background: #eee }
#part { position: absolute; left: 50px; top: 50px; width: 50px; height: 50px;
        padding: 5px; view-transition-name: p; background: #acf; }

</style>
</head>
<body>
<div id=part>A</div>
</body>
</html>