Quelle test_bug607464.html Sprache: HTML

products/sources/formale Sprachen/C/Firefox/dom/events/test/test_bug607464.html

<!DOCTYPE HTML>
<html>

<head>
  <title>Test for Bug 607464</title>
  <script src="/tests/SimpleTest/SimpleTest.js"></script>
  <script src="/tests/SimpleTest/EventUtils.js"></script>
  <script type="text/javascript" src="/tests/gfx/layers/apz/test/mochitest/apz_test_utils.js"></script>
  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=607464">Mozilla Bug 607464</a>
<p id="display"></p>
<div id="content" style="display: none">

</div>
<pre id="test">
<script type="application/javascript">

/**
* Test for Bug 607464:
* Pixel scrolling shouldn't scroll smoothly, even if general.smoothScroll is on.
**/

function scrollDown150PxWithPixelScrolling(scrollbox) {
  var win = scrollbox.ownerDocument.defaultView;
  let event = {
    deltaMode: WheelEvent.DOM_DELTA_PIXEL,
    deltaY: 30.0,
    lineOrPageDeltaY: 1
  };
  // A pixel scroll with lineOrPageDeltaY.
  synthesizeWheel(scrollbox, 10, 10, event, win);
  // then 4 pixel scrolls without lineOrPageDeltaY.
  event.lineOrPageDeltaY = 0;
  for (let i = 0; i < 4; ++i) {
    synthesizeWheel(scrollbox, 10, 10, event, win);
  }

  // Note: the line scroll shouldn't have any effect because it has
  // hasPixels = true set on it. We send it to emulate normal
  // behavior.
}

function runTest() {
  var win = open('bug607464.html', '_blank', 'width=300,height=300');
  SimpleTest.waitForFocus(function () {
    var scrollbox = win.document.getElementById("scrollbox");
    let scrollTopBefore = scrollbox.scrollTop;

    win.addEventListener("scroll", function(e) {
      is(scrollbox.scrollTop % 30, 0,
         "Pixel scrolling should happen instantly, not smoothly. The " +
         "scroll position " + scrollbox.scrollTop + " in this sequence of wheel " +
         "events should be a multiple of 30.");
      if (scrollbox.scrollTop == 150) {
        win.close();
        SimpleTest.finish();
      }
    }, true);

    promiseOnlyApzControllerFlushed(win).then(function() {
      scrollDown150PxWithPixelScrolling(scrollbox);
    });
  }, win);
}

window.onload = function() {
  SpecialPowers.pushPrefEnv({
    "set":[["general.smoothScroll", true],
           ["mousewheel.acceleration.start", -1],
           ["mousewheel.system_scroll_override.enabled", false]]}, runTest);
}

SimpleTest.waitForExplicitFinish();
SimpleTest.testInChaosMode();

</script>
</pre>

</body>
</html>

Messung V0.5

¤ Dauer der Verarbeitung: 0.11 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung und die Messung sind noch experimentell.