gfx/layers/apz/test/mochitest/helper_fullscreen.html
author Sebastian Hengst <archaeopteryx@coole-files.de>
Sun, 05 Feb 2023 13:12:06 +0100
changeset 651755 2e6262a410b7c25a3a7349825a7367462d4420fa
parent 560730 65394ac48dd4109dfa728d726646e9adda540fe5
permissions -rw-r--r--
Bug 1815090 - regenerate certificates in build/pgo/certs/. a=me * the build/pgo/certs/ changes were made using `./mach python build/pgo/genpgocert.py`

<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width; initial-scale=1.0">
  <title>Tests that layout viewport is not larger than visual viewport on fullscreen</title>
  <script type="application/javascript" src="apz_test_utils.js"></script>
  <script src="/tests/SimpleTest/paint_listener.js"></script>
  <style>
    body {
      margin: 0;
      padding: 0;
      overflow-x: hidden;
    }
  </style>
</head>
<body>
  <div style="background: blue; width: 100%; height: 100%;"></div>
  <div style="background: red; width: 200%; height: 100px;">overflowed element</div>
  <div id="target" style="background: green; width: 100px; height: 100px;"></div>
  <script type="application/javascript">
    const utils = SpecialPowers.getDOMWindowUtils(window);

    function waitForFullscreenChange() {
      return new Promise(resolve => {
        document.addEventListener("fullscreenchange", resolve);
      });
    }

    async function test(testDriver) {
      target.requestFullscreen();

      await waitForFullscreenChange();

      is(document.fullscreenElement, target,
         "The target element should have been fullscreen-ed");

      // Try to move rightward, but it should NOT happen.
      utils.scrollToVisual(200, 0, utils.UPDATE_TYPE_MAIN_THREAD,
                           utils.SCROLL_MODE_INSTANT);

      await waitUntilApzStable();

      is(visualViewport.offsetLeft, 0,
         "The visual viewport offset should never be moved");

      document.exitFullscreen();
    }

    waitUntilApzStable().then(test).then(subtestDone, subtestFailed);
  </script>
</body>
</html>