tor-browser

The Tor Browser
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TestInputQueue.cpp (3974B)

      1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
      2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
      3 /* This Source Code Form is subject to the terms of the Mozilla Public
      4 * License, v. 2.0. If a copy of the MPL was not distributed with this
      5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
      6 
      7 #include "APZCTreeManagerTester.h"
      8 #include "APZTestCommon.h"
      9 #include "InputUtils.h"
     10 #include "mozilla/layers/ScrollableLayerGuid.h"
     11 
     12 // Test of scenario described in bug 1269067 - that a continuing mouse drag
     13 // doesn't interrupt a wheel scrolling animation
     14 TEST_F(APZCTreeManagerTester, WheelInterruptedByMouseDrag) {
     15  // Needed because the test uses SmoothWheel()
     16  SCOPED_GFX_PREF_BOOL("general.smoothScroll", true);
     17 
     18  // Set up a scrollable layer
     19  CreateSimpleScrollingLayer();
     20  ScopedLayerTreeRegistration registration(LayersId{0}, mcc);
     21  UpdateHitTestingTree();
     22  RefPtr<TestAsyncPanZoomController> apzc = ApzcOf(root);
     23 
     24  // First start the mouse drag
     25  uint64_t dragBlockId =
     26      MouseDown(apzc, ScreenIntPoint(5, 5), mcc->Time()).mInputBlockId;
     27  uint64_t tmpBlockId =
     28      MouseMove(apzc, ScreenIntPoint(6, 6), mcc->Time()).mInputBlockId;
     29  EXPECT_EQ(dragBlockId, tmpBlockId);
     30 
     31  // Insert the wheel event, check that it has a new block id
     32  uint64_t wheelBlockId =
     33      SmoothWheel(apzc, ScreenIntPoint(6, 6), ScreenPoint(0, 1), mcc->Time())
     34          .mInputBlockId;
     35  EXPECT_NE(dragBlockId, wheelBlockId);
     36 
     37  // Continue the drag, check that the block id is the same as before
     38  tmpBlockId = MouseMove(apzc, ScreenIntPoint(7, 5), mcc->Time()).mInputBlockId;
     39  EXPECT_EQ(dragBlockId, tmpBlockId);
     40 
     41  // Finish the wheel animation
     42  apzc->AdvanceAnimationsUntilEnd();
     43 
     44  // Check that it scrolled
     45  ParentLayerPoint scroll = apzc->GetCurrentAsyncScrollOffset(
     46      AsyncPanZoomController::eForEventHandling);
     47  EXPECT_EQ(scroll.x, 0);
     48  EXPECT_EQ(scroll.y, 10);  // We scrolled 1 "line" or 10 pixels
     49 }
     50 
     51 // Test of the scenario in bug 1894228, where the touchpad generates a
     52 // mixture of wheel events with horizontal and vertical deltas, and if the
     53 // content is only scrollable in the vertical direction, then an input
     54 // block starting with a wheel event with a horizontal can prevent the
     55 // entire input block from causing any scrolling.
     56 TEST_F(APZCTreeManagerTester, HorizontalDeltaInterferesWithVerticalScrolling) {
     57  using ViewID = ScrollableLayerGuid::ViewID;
     58  ViewID rootScrollId = ScrollableLayerGuid::START_SCROLL_ID;
     59  const char* treeShape = "x";
     60  LayerIntRect layerVisibleRect[] = {
     61      LayerIntRect(0, 0, 100, 100),
     62  };
     63  CreateScrollData(treeShape, layerVisibleRect);
     64  // Only vertically scrollable
     65  SetScrollableFrameMetrics(layers[0], rootScrollId, CSSRect(0, 0, 100, 1000));
     66 
     67  ScopedLayerTreeRegistration registration(LayersId{0}, mcc);
     68  UpdateHitTestingTree();
     69  RefPtr<TestAsyncPanZoomController> apzc = ApzcOf(root);
     70 
     71  // Configure the APZC to wait for main-thread confirmations before
     72  // processing events. (This is needed to trigger the buggy codepath.)
     73  apzc->SetWaitForMainThread();
     74 
     75  // Send a wheel event with a horizontal delta.
     76  ScreenIntPoint cursorLocation(50, 50);
     77  uint64_t wheelBlockId1 =
     78      Wheel(apzc, cursorLocation, ScreenIntPoint(-10, 0), mcc->Time())
     79          .mInputBlockId;
     80 
     81  // Send a wheel event with a vertical delta.
     82  uint64_t wheelBlockId2 =
     83      Wheel(apzc, cursorLocation, ScreenIntPoint(0, 10), mcc->Time())
     84          .mInputBlockId;
     85 
     86  // Since the wheel block's target APZC has not been confirmed yet, the second
     87  // event will go into the same block as the first.
     88  EXPECT_EQ(wheelBlockId1, wheelBlockId2);
     89 
     90  // Confirm the input block.
     91  manager->ContentReceivedInputBlock(wheelBlockId1, false);
     92  manager->SetTargetAPZC(wheelBlockId1, {apzc->GetGuid()});
     93 
     94  // We should have scrolled vertically.
     95  EXPECT_EQ(ParentLayerPoint(0, 10),
     96            apzc->GetCurrentAsyncScrollOffset(
     97                AsyncPanZoomController::eForEventHandling));
     98 }