Quelle helper_scrollto_tap.html Sprache: HTML

products/sources/formale Sprachen/C/Firefox/gfx/layers/apz/test/mochitest/helper_scrollto_tap.html

<!DOCTYPE HTML>
<html>
<head>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width; initial-scale=1.0">
  <title>Sanity touch-tapping test</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() {
  while (window.scrollY == 0) {
    // the scrollframe is not yet marked as APZ-scrollable. Mark it so
    // before continuing.
    window.scrollTo(0, 1);
    await promiseApzFlushedRepaints();
  }

  // This is a scroll by 20px that should use paint-skipping if possible.
  // If paint-skipping is enabled, this should not trigger a paint, but go
  // directly to the compositor using an empty transaction. We check for this
  // by ensuring the document element did not get painted.
  var utils = window.opener.SpecialPowers.getDOMWindowUtils(window);
  var elem = document.documentElement;
  var skipping = location.search == "?true";
  utils.checkAndClearPaintedState(elem);
  window.scrollTo(0, 20);
  await promiseAllPaintsDone();

  if (skipping) {
    is(utils.checkAndClearPaintedState(elem), false, "Document element didn't get painted");
  }

  // After that's done, we click on the button to make sure the
  // skipped-paint codepath still has working APZ event transformations.
  let clickPromise = new Promise(resolve => {
    document.addEventListener("click", resolve);
  });

  await synthesizeNativeTap(document.getElementById("b"), 5, 5, function() {
    dump("Finished synthesizing tap, waiting for button to be clicked...\n");
  });

  let clickEvent = await clickPromise;
  is(clickEvent.target, document.getElementById("b"), "Clicked on button, yay! (at " + clickEvent.clientX + "," + clickEvent.clientY + ")");
}

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

  </script>
</head>
<body style="height: 5000px">
<div style="height: 50px">spacer</div>
<button id="b" style="width: 10px; height: 10px"></button>
</body>
</html>

Messung V0.5

¤ Dauer der Verarbeitung: 0.19 Sekunden (vorverarbeitet) ¤

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Cephes Mathematical Library

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