tor-browser

The Tor Browser
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TestSnappingOnMomentum.cpp (4306B)

      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 
     10 #include "InputUtils.h"
     11 #include "mozilla/StaticPrefs_layout.h"
     12 
     13 class APZCSnappingOnMomentumTesterMock : public APZCTreeManagerTester {
     14 public:
     15  APZCSnappingOnMomentumTesterMock() { CreateMockHitTester(); }
     16 };
     17 
     18 TEST_F(APZCSnappingOnMomentumTesterMock, Snap_On_Momentum) {
     19  const char* treeShape = "x";
     20  LayerIntRect layerVisibleRect[] = {
     21      LayerIntRect(0, 0, 100, 100),
     22  };
     23  CreateScrollData(treeShape, layerVisibleRect);
     24  SetScrollableFrameMetrics(root, ScrollableLayerGuid::START_SCROLL_ID,
     25                            CSSRect(0, 0, 100, 500));
     26 
     27  // Set up some basic scroll snapping
     28  ScrollSnapInfo snap;
     29  snap.mScrollSnapStrictnessY = StyleScrollSnapStrictness::Mandatory;
     30  snap.mSnapportSize =
     31      CSSSize::ToAppUnits(layerVisibleRect[0].Size() * LayerToCSSScale(1.0));
     32  snap.mSnapTargets.AppendElement(ScrollSnapInfo::SnapTarget(
     33      Nothing(), Some(0 * AppUnitsPerCSSPixel()),
     34      CSSRect::ToAppUnits(CSSRect(0, 0, 10, 10)), StyleScrollSnapStop::Normal,
     35      ScrollSnapTargetId{1}));
     36  snap.mSnapTargets.AppendElement(ScrollSnapInfo::SnapTarget(
     37      Nothing(), Some(100 * AppUnitsPerCSSPixel()),
     38      CSSRect::ToAppUnits(CSSRect(0, 100, 10, 10)), StyleScrollSnapStop::Normal,
     39      ScrollSnapTargetId{2}));
     40 
     41  ModifyFrameMetrics(root, [&](ScrollMetadata& aSm, FrameMetrics&) {
     42    aSm.SetSnapInfo(ScrollSnapInfo(snap));
     43  });
     44 
     45  UniquePtr<ScopedLayerTreeRegistration> registration =
     46      MakeUnique<ScopedLayerTreeRegistration>(LayersId{0}, mcc);
     47  UpdateHitTestingTree();
     48 
     49  RefPtr<TestAsyncPanZoomController> apzc = ApzcOf(root);
     50 
     51  TimeStamp now = mcc->Time();
     52 
     53  QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
     54  PanGesture(PanGestureInput::PANGESTURE_START, manager, ScreenIntPoint(50, 80),
     55             ScreenPoint(0, 2), now);
     56  mcc->AdvanceByMillis(5);
     57  apzc->AdvanceAnimations(mcc->GetSampleTime());
     58  QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
     59  PanGesture(PanGestureInput::PANGESTURE_PAN, manager, ScreenIntPoint(50, 80),
     60             ScreenPoint(0, 25), mcc->Time());
     61  mcc->AdvanceByMillis(5);
     62  apzc->AdvanceAnimations(mcc->GetSampleTime());
     63  QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
     64  PanGesture(PanGestureInput::PANGESTURE_PAN, manager, ScreenIntPoint(50, 80),
     65             ScreenPoint(0, 25), mcc->Time());
     66 
     67  // The velocity should be positive when panning with positive displacement.
     68  EXPECT_GT(apzc->GetVelocityVector().y, 3.0);
     69 
     70  mcc->AdvanceByMillis(5);
     71  apzc->AdvanceAnimations(mcc->GetSampleTime());
     72  QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
     73  PanGesture(PanGestureInput::PANGESTURE_END, manager, ScreenIntPoint(50, 80),
     74             ScreenPoint(0, 0), mcc->Time());
     75 
     76  // After lifting the fingers, the velocity should be zero and a smooth
     77  // animation should have been triggered for scroll snap.
     78  EXPECT_EQ(apzc->GetVelocityVector().y, 0);
     79  apzc->AssertInSmoothMsdScroll();
     80 
     81  mcc->AdvanceByMillis(5);
     82 
     83  apzc->AdvanceAnimations(mcc->GetSampleTime());
     84  QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
     85  PanGesture(PanGestureInput::PANGESTURE_MOMENTUMSTART, manager,
     86             ScreenIntPoint(50, 80), ScreenPoint(0, 200), mcc->Time());
     87  mcc->AdvanceByMillis(10);
     88  apzc->AdvanceAnimations(mcc->GetSampleTime());
     89  QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
     90  PanGesture(PanGestureInput::PANGESTURE_MOMENTUMPAN, manager,
     91             ScreenIntPoint(50, 80), ScreenPoint(0, 50), mcc->Time());
     92  mcc->AdvanceByMillis(10);
     93  apzc->AdvanceAnimations(mcc->GetSampleTime());
     94  QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
     95  PanGesture(PanGestureInput::PANGESTURE_MOMENTUMEND, manager,
     96             ScreenIntPoint(50, 80), ScreenPoint(0, 0), mcc->Time());
     97 
     98  apzc->AdvanceAnimationsUntilEnd();
     99  EXPECT_EQ(100.0f, apzc->GetCurrentAsyncScrollOffset(
    100                            AsyncTransformConsumer::eForEventHandling)
    101                        .y);
    102 }