Blitz - WPT: rounded-border-clipper.html

wpt / css / css-view-transitions / nested / rounded-border-clipper.html

/css/css-view-transitions/nested/rounded-border-clipper.html

<!doctype html>
<html class=reftest-wait>
<title>Nested View Transitions: Rounded border clipper</title>
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-2/">
<link rel="match" href="rounded-border-clipper-ref.html">
<script src="/common/reftest-wait.js"></script>
<script src="resources/compute-test.js"></script>
<script src="/dom/events/scrolling/scroll_support.js"></script>

<style>
:root { view-transition-name: none }

#clipper {
  view-transition-group: contain;
  view-transition-name: clipper;
  overflow: clip;
  height: 200px;
  width: 100px;
  border-radius: 20px;
}

.item {
  will-change: transform;
  view-transition-name: item;
  background: green;
  position: relative;
  height: 50px;
}

.lower {
  top: 50px;
}

::view-transition-group(clipper) {
  animation-play-state: paused;
  overflow: clip;
  border-radius: 20px;
}
</style>

<div id=clipper>
  <div id=item class=item></div>
</div>

<script>

async function runTest() {
  await document.startViewTransition(() => item.classList.add("lower")).ready;

  let anims = document.documentElement.getAnimations({ subtree: true });
  let promises = anims.map(anim => {
    if (anim.playState != "paused") {
      return anim.finished;
    }
  });
  Promise.all(promises).then(takeScreenshot);
}

onload = () => {
  waitForCompositorReady().then(runTest);
}
</script>

/css/css-view-transitions/nested/rounded-border-clipper-ref.html

<!doctype html>
<title>Nested View Transitions: Rounded border clipper</title>
<link rel="help" href="https://drafts.csswg.org/css-view-transitions-2/">

<style>
#clipper {
  overflow: clip;
  height: 200px;
  width: 100px;
  border-radius: 20px;
}

.item {
  will-change: transform;
  background: green;
  position: relative;
  height: 50px;
  top: 50px;
}
</style>

<div id=clipper>
  <div class=item></div>
</div>