Blitz - WPT: pause-rendering-resize.html

wpt / css / css-view-transitions / scoped / pause-rendering-resize.html

/css/css-view-transitions/scoped/pause-rendering-resize.html

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

body { margin: 20px; }
#scope {
  width: 200px;
  height: 100px;
  border: 20px solid #acf;
  padding: 20px;
  outline: 5px solid green;
  font: 18pt monospace;
  contain: layout;
}
#scope.changed {
  width: 180px;
  height: 120px;
  outline-width: 10px;
}

</style>
</head>
<body>
<div id=scope>SCOPE</div>
<script>

const scope = document.querySelector("#scope");
failIfNot(scope.startViewTransition, "Missing element.startViewTransition");

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

async function runTest() {
  await waitForCompositorReady();
  await new Promise(finish => {
    scope.startViewTransition(async () => {
      scope.className = "changed";

      await raf();
      takeScreenshot();

      // Finish test, transition never starts.
      finish();
      await new Promise(r => {});
    });
  });
}

onload = () => runTest();

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

/css/css-view-transitions/scoped/pause-rendering-resize-ref.html

<!DOCTYPE html>
<html>
<head>
<style>

body { margin: 20px; }
#scope {
  width: 200px;
  height: 100px;
  border: 20px solid #acf;
  padding: 20px;
  outline: 5px solid green;
  font: 18pt monospace;
  contain: layout;
}

</style>
</head>
<body>
<div id=scope>SCOPE</div>
</body>
</html>