testing/web-platform/tests/html/canvas/offscreen/layers/2d.layer.clearRect.full.html
author Dana Keeler <dkeeler@mozilla.com>
Sat, 12 Jul 2025 15:57:37 +0000 (17 hours ago)
changeset 796342 3a804f83c6b282c3c6b6ed9b67bacbc277bfb300
parent 752939 1996e4a4973941fa87e76e5646d5bb0088c0de84
permissions -rw-r--r--
Bug 1976779 - rsclientcerts: make each backend responsible for rate-limiting calls to find_objects r=jschanck Before this patch, `rsclientcerts::manager` would rate-limit calls to `find_objects` to once every 3 seconds because the underlying operation can be time-consuming (in particular, on macOS and Windows, if there are many certificates/keys available). On Android, keys aren't available until the user selects one, which means that if a call to `find_objects` happened before the selection prompt was shown (which is what happens) and the user chose one in less than 3 seconds, the backend wouldn't search again, thus making it seem like no keys were available, which would cause Firefox to not send a client certificate. This patch makes each backend implementation responsible for this rate-limiting, because only they know if it's appropriate to do so (in particular, on Android, `find_objects` doesn't have the same performance concern as on macOS and Windows because rather than searching for certificates and keys, it asks `ClientAuthCertificateManager` for the cached list of certificates and keys that have already been approved for use by the user). Differential Revision: https://phabricator.services.mozilla.com/D257065
<!DOCTYPE html>
<!-- DO NOT EDIT! This test has been generated by /html/canvas/tools/gentest.py. -->
<meta charset="UTF-8">
<link rel="match" href="2d.layer.clearRect.full-expected.html">
<title>Canvas test: 2d.layer.clearRect.full</title>
<h1>2d.layer.clearRect.full</h1>
<p class="desc">clearRect inside a layer can clear all of the layer content.</p>
<canvas id="canvas" width="100" height="100">
  <p class="fallback">FAIL (fallback content)</p>
</canvas>
<script>
  const canvas = new OffscreenCanvas(100, 100);
  const ctx = canvas.getContext('2d');

  ctx.fillStyle = 'blue';
  ctx.fillRect(10, 10, 80, 50);

  ctx.beginLayer();
  ctx.fillStyle = 'red';
  ctx.fillRect(20, 20, 80, 50);
  ctx.fillStyle = 'green';
  ctx.clearRect(0, 0, 100, 100);
  ctx.endLayer();

  const outputCanvas = document.getElementById("canvas");
  outputCanvas.getContext('2d').drawImage(canvas, 0, 0);
</script>