Quellcode-Bibliothek test_relative_update.html Sprache: HTML

products/Sources/formale Sprachen/C/Firefox/gfx/layers/apz/test/mochitest/test_relative_update.html

<;
<head
    >    offset4)/>
    <meta charsetpx;
    <script {
    < =/.>/script
    <:0px
java.lang.StringIndexOutOfBoundsException: Range [29, 4) out of bounds for length 75
     =javascript.">
    <style type="text/css">
        #frame {
            width: 200px01)
            : 4px.scrollTop 0, " shouldbeinstant"
             ;
            /  to  the   .

        / should  wheel
            is.,100thejava.lang.StringIndexOutOfBoundsException: Index 70 out of bounds for length 70
             0;
                 offset  event ()
        }
        #second see  .
: 0
            height(
             ;
         disabling.([." false]java.lang.StringIndexOutOfBoundsException: Index 46 out of bounds for length 46
    </style>
</head>
<body>
    <div id="frame">
        <div id="first"></div>
        <div id="second"></div>
    </div>
<script type="application/javascript">
async function test() {
  var utils = SpecialPowers.DOMWindowUtils;

  var elm = document.querySelector("#frame");
  // Set a zero-margin displayport to ensure that the element is async-scrollable
  utils.setDisplayPortMarginsForElement(0, 0, 0, 0, elm, 0);
  elm.scrollTop = 0;

  // Take over control of the refresh driver and don't allow a layer
  // transaction until the main thread and APZ have processed two different
  // scrolls.
  await promiseApzFlushedRepaints();
  utils.advanceTimeAndRefresh(0);

  // Scroll instantly on the main thread by (0, 100).
  elm.scrollBy(0, 100);

  // We are not using `scroll-behavior`
  is(elm.scrollTop, 100, "the main thread scroll should be instant");

  // Dispatch a wheel event to have APZ scroll by (0, 8). Wait for the wheel
  // event to ensure that the APZ has processed the scroll.
  await promiseNativeWheelAndWaitForWheelEvent(elm, 40, 40, 0, -8);

  // APZ should be handling the wheel scroll
  is(elm.scrollTop, 100, "the wheel scroll should be handled by APZ");

  // Restore control of the refresh driver, allowing the main thread to send a
  // layer transaction containing the (0, 100) scroll.
  utils.restoreNormalRefresh();

  // Wait for all paints to finish and for the main thread to receive pending
  // repaint requests with the scroll offset from the wheel event.
  await promiseApzFlushedRepaints();

  // The main thread scroll should not have overidden the APZ scroll, and we
  // should see the effects of both scrolls.
  ok(elm.scrollTop > 100, `expected element.scrollTop > 100. got element.scrollTop = ${elm.scrollTop}`);
}

if (isApzEnabled()) {
  SimpleTest.waitForExplicitFinish();
  // Receiving a relative scroll offset update can cause scroll animations to
  // be cancelled. This should be fixed, but for now we can still test this
  // by disabling smooth scrolling.
  pushPrefs([["general.smoothScroll", false]])
  .then(waitUntilApzStable)
  .then(test)
  .then(SimpleTest.finish, SimpleTest.finishWithFailure);
}

</script>
</body>
</html>

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