gfx/layers/apz/test/mochitest/helper_doubletap_zoom_htmlelement.html
author Cosmin Sabou <csabou@mozilla.com>
Sun, 05 Feb 2023 19:37:33 +0000
changeset 651812 d8601249f1eb8c52c742b0c19c9ca0fa8f2e31fe
parent 589289 7e795e95ddda3f9b8fb6fe4cff9077834f8b898e
permissions -rw-r--r--
Bug 1806090 - temporarily disable browser_quickactions.js on linux for frequent failures. r=intermittent-reviewers,MasterWayZ Differential Revision: https://phabricator.services.mozilla.com/D168909

<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=2100"/>
  <title>Check that double tapping on a scrollbar does not scroll to top</title>
  <script type="application/javascript" src="apz_test_native_event_utils.js"></script>
  <script type="application/javascript" src="apz_test_utils.js"></script>
  <script src="/tests/SimpleTest/paint_listener.js"></script>
  <script type="application/javascript">

async function test() {
  let useTouchpad = (location.search == "?touchpad");

  var resolution = await getResolution();
  var start_resolution = resolution;
  ok(resolution > 0,
     "The initial_resolution is " + resolution + ", which is some sane value");

  // Check that double-tapping once zooms in
  await doubleTapOn(document.getElementById("target"), 10, 10, useTouchpad);
  var prev_resolution = resolution;
  resolution = await getResolution();
  ok(resolution > prev_resolution, "The first double-tap has increased the resolution to " + resolution);

  // instant scroll to the middle of the page
  window.scrollTo({
    top: 4 * window.innerHeight,
    left: 0,
    behavior: 'auto'
  });

  await promiseApzFlushedRepaints();

  let prevScrollX = window.scrollX;
  let prevScrollY = window.scrollY;

  ok(3.9 * window.innerHeight < window.scrollY && window.scrollY < 4.1 * window.innerHeight,
    "scrollY looks good");

  // Check that double-tapping on the bottom scrollbar does not scroll us to the top
  // Need to divide by resolution because the coords are assumed to be inside the resolution
  await doubleTapOn(window, (window.innerWidth/2)/resolution, (window.innerHeight - 5)/resolution, useTouchpad);
  prev_resolution = resolution;
  resolution = await getResolution();
  ok(resolution < prev_resolution, "The second double-tap has decreased the resolution to " + resolution);
  ok(resolution == start_resolution, "The second double-tap has decreased the resolution to the start to " + resolution);

  info("prevscroll " + prevScrollX + " " + prevScrollY + "\n");
  info("window.scroll " + window.scrollX + " " + window.scrollY + "\n");

  ok(0.88*prevScrollY < window.scrollY && window.scrollY < prevScrollY*1.12, "scroll y didn't change by much");
}

waitUntilApzStable()
.then(test)
.then(subtestDone, subtestFailed);

  </script>
  <style type="text/css">
    .spacer {
      background-color: #eee;
      width: 10px;
      height: 800vh;
    }
</style>
</head>
<body>

<div id="target" style="width: 100px; height: 100px; background: red;">
</div>
<div class="spacer">
</div>

</body>
</html>