Quelle helper_hittest_basic.html Sprache: HTML

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

<!DOCTYPE HTML>
<html>
<head>
  <title>Various tests to exercise the APZ hit-testing codepaths</title>
  <script type="application/javascript" src="apz_test_utils.js"></script>
  <script type="application/javascript" src="apz_test_native_event_utils.js"></script>
  <script src="/tests/SimpleTest/paint_listener.js"></script>
  <meta name="viewport" content="width=device-width"/>
</head>
<body>
<div id="scroller" style="width: 300px; height: 300px; overflow:scroll; margin-top: 100px; margin-left: 50px">
  <div id="contents" style="width: 500px; height: 500px; background-image: linear-gradient(blue,red)">
   <div id="apzaware" style="position: relative; width: 100px; height: 100px; top: 300px; background-color: red" onwheel="return false;"></div>
  </div>
</div>
<div id="make_root_scrollable" style="height: 5000px"></div>
</body>
<script type="application/javascript">

async function test() {
  var config = getHitTestConfig();
  var utils = config.utils;

  var scroller = document.getElementById("scroller");
  var apzaware = document.getElementById("apzaware");

  let expectedHitInfo = APZHitResultFlags.VISIBLE;
  if (!config.activateAllScrollFrames) {
    expectedHitInfo |= APZHitResultFlags.INACTIVE_SCROLLFRAME;
  }
  checkHitResult(hitTest(centerOf(scroller)),
                 expectedHitInfo,
                 (config.activateAllScrollFrames ? utils.getViewId(scroller)
                                                 : utils.getViewId(document.scrollingElement)),
                 utils.getLayersId(),
                 "inactive scrollframe");

  // The apz-aware div (which has a non-passive wheel listener) is not visible
  // and so the hit-test should just return the root scrollframe area that's
  // covering it
  checkHitResult(hitTest(centerOf(apzaware)),
                 APZHitResultFlags.VISIBLE,
                 utils.getViewId(document.scrollingElement),
                 utils.getLayersId(),
                 "inactive scrollframe - apzaware block");

  // Hit test where the scroll thumbs should be.
  hitTestScrollbar({
    element: scroller,
    directions: { vertical: true, horizontal: true },
    expectedScrollId: utils.getViewId(document.scrollingElement),
    expectedLayersId: utils.getLayersId(),
    trackLocation: ScrollbarTrackLocation.START,
    expectThumb: true,
    layerState: LayerState.INACTIVE,
  });

  // activate the scrollframe but keep the main-thread scroll position at 0.
  // also apply a async scroll offset in the y-direction such that the
  // scrollframe scrolls to the bottom of its range.
  utils.setDisplayPortForElement(0, 0, 500, 500, scroller, 1);
  await promiseApzFlushedRepaints();
  var scrollY = scroller.scrollTopMax;
  utils.setAsyncScrollOffset(scroller, 0, scrollY);
  // Tick the refresh driver once to make sure the compositor has applied the
  // async scroll offset (for WebRender hit-testing we need to make sure WR has
  // the latest info).
  utils.advanceTimeAndRefresh(16);
  utils.restoreNormalRefresh();

  var scrollerViewId = utils.getViewId(scroller);

  // Now we again test the middle of the scrollframe, which is now active
  checkHitResult(hitTest(centerOf(scroller)),
                 APZHitResultFlags.VISIBLE,
                 scrollerViewId,
                 utils.getLayersId(),
                 "active scrollframe");

  // Test the apz-aware block
  var apzawarePosition = centerOf(apzaware); // main thread position
  apzawarePosition.y -= scrollY; // APZ position
  checkHitResult(hitTest(apzawarePosition),
                 APZHitResultFlags.VISIBLE |
                 APZHitResultFlags.APZ_AWARE_LISTENERS,
                 scrollerViewId,
                 utils.getLayersId(),
                 "active scrollframe - apzaware block");

  // Test the scrollbars. Note that this time the vertical scrollthumb is
  // going to be at the bottom of the track. We'll test both the top and the
  // bottom.

  // top of scrollbar track
  hitTestScrollbar({
    element: scroller,
    directions: { vertical: true },
    expectedScrollId: scrollerViewId,
    expectedLayersId: utils.getLayersId(),
    trackLocation: ScrollbarTrackLocation.START,
    expectThumb: false,
    layerState: LayerState.ACTIVE,
  });
  // bottom of scrollbar track (scrollthumb)
  hitTestScrollbar({
    element: scroller,
    directions: { vertical: true },
    expectedScrollId: scrollerViewId,
    expectedLayersId: utils.getLayersId(),
    trackLocation: ScrollbarTrackLocation.END,
    expectThumb: true,
    layerState: LayerState.ACTIVE,
  });
  // left part of scrollbar track (has scrollthumb)
  hitTestScrollbar({
    element: scroller,
    directions: { horizontal: true },
    expectedScrollId: scrollerViewId,
    expectedLayersId: utils.getLayersId(),
    trackLocation: ScrollbarTrackLocation.START,
    expectThumb: true,
    layerState: LayerState.ACTIVE,
  });
  // right part of scrollbar track
  hitTestScrollbar({
    element: scroller,
    directions: { horizontal: true },
    expectedScrollId: scrollerViewId,
    expectedLayersId: utils.getLayersId(),
    trackLocation: ScrollbarTrackLocation.END,
    expectThumb: false,
    layerState: LayerState.ACTIVE,
  });
}

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

</script>
</html>

Messung V0.5

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