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-rw-r--r--gfx/layers/apz/test/gtest/TestTreeManager.cpp347
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diff --git a/gfx/layers/apz/test/gtest/TestTreeManager.cpp b/gfx/layers/apz/test/gtest/TestTreeManager.cpp
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+++ b/gfx/layers/apz/test/gtest/TestTreeManager.cpp
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "APZCTreeManagerTester.h"
+#include "APZTestCommon.h"
+#include "InputUtils.h"
+#include "Units.h"
+
+class APZCTreeManagerGenericTester : public APZCTreeManagerTester {
+ protected:
+ void CreateSimpleScrollingLayer() {
+ const char* treeShape = "x";
+ LayerIntRegion layerVisibleRegion[] = {
+ LayerIntRect(0, 0, 200, 200),
+ };
+ CreateScrollData(treeShape, layerVisibleRegion);
+ SetScrollableFrameMetrics(layers[0], ScrollableLayerGuid::START_SCROLL_ID,
+ CSSRect(0, 0, 500, 500));
+ }
+
+ void CreateSimpleMultiLayerTree() {
+ const char* treeShape = "x(xx)";
+ // LayerID 0 12
+ LayerIntRegion layerVisibleRegion[] = {
+ LayerIntRect(0, 0, 100, 100),
+ LayerIntRect(0, 0, 100, 50),
+ LayerIntRect(0, 50, 100, 50),
+ };
+ CreateScrollData(treeShape, layerVisibleRegion);
+ }
+
+ void CreatePotentiallyLeakingTree() {
+ const char* treeShape = "x(x(x(x))x(x(x)))";
+ // LayerID 0 1 2 3 4 5 6
+ CreateScrollData(treeShape);
+ SetScrollableFrameMetrics(layers[0], ScrollableLayerGuid::START_SCROLL_ID);
+ SetScrollableFrameMetrics(layers[2],
+ ScrollableLayerGuid::START_SCROLL_ID + 1);
+ SetScrollableFrameMetrics(layers[5],
+ ScrollableLayerGuid::START_SCROLL_ID + 1);
+ SetScrollableFrameMetrics(layers[3],
+ ScrollableLayerGuid::START_SCROLL_ID + 2);
+ SetScrollableFrameMetrics(layers[6],
+ ScrollableLayerGuid::START_SCROLL_ID + 3);
+ }
+
+ void CreateTwoLayerTree(int32_t aRootContentLayerIndex) {
+ const char* treeShape = "x(x)";
+ // LayerID 0 1
+ LayerIntRegion layerVisibleRegion[] = {
+ LayerIntRect(0, 0, 100, 100),
+ LayerIntRect(0, 0, 100, 100),
+ };
+ CreateScrollData(treeShape, layerVisibleRegion);
+ SetScrollableFrameMetrics(layers[0], ScrollableLayerGuid::START_SCROLL_ID);
+ SetScrollableFrameMetrics(layers[1],
+ ScrollableLayerGuid::START_SCROLL_ID + 1);
+ SetScrollHandoff(layers[1], layers[0]);
+
+ // Make layers[aRootContentLayerIndex] the root content
+ ModifyFrameMetrics(layers[aRootContentLayerIndex],
+ [](ScrollMetadata& sm, FrameMetrics& fm) {
+ fm.SetIsRootContent(true);
+ });
+ }
+};
+
+TEST_F(APZCTreeManagerGenericTester, ScrollablePaintedLayers) {
+ CreateSimpleMultiLayerTree();
+ ScopedLayerTreeRegistration registration(LayersId{0}, mcc);
+
+ // both layers have the same scrollId
+ SetScrollableFrameMetrics(layers[1], ScrollableLayerGuid::START_SCROLL_ID);
+ SetScrollableFrameMetrics(layers[2], ScrollableLayerGuid::START_SCROLL_ID);
+ UpdateHitTestingTree();
+
+ TestAsyncPanZoomController* nullAPZC = nullptr;
+ // so they should have the same APZC
+ EXPECT_FALSE(HasScrollableFrameMetrics(layers[0]));
+ EXPECT_NE(nullAPZC, ApzcOf(layers[1]));
+ EXPECT_NE(nullAPZC, ApzcOf(layers[2]));
+ EXPECT_EQ(ApzcOf(layers[1]), ApzcOf(layers[2]));
+}
+
+TEST_F(APZCTreeManagerGenericTester, Bug1068268) {
+ CreatePotentiallyLeakingTree();
+ ScopedLayerTreeRegistration registration(LayersId{0}, mcc);
+
+ UpdateHitTestingTree();
+ RefPtr<HitTestingTreeNode> root = manager->GetRootNode();
+ RefPtr<HitTestingTreeNode> node2 = root->GetFirstChild()->GetFirstChild();
+ RefPtr<HitTestingTreeNode> node5 = root->GetLastChild()->GetLastChild();
+
+ EXPECT_EQ(ApzcOf(layers[2]), node5->GetApzc());
+ EXPECT_EQ(ApzcOf(layers[2]), node2->GetApzc());
+ EXPECT_EQ(ApzcOf(layers[0]), ApzcOf(layers[2])->GetParent());
+ EXPECT_EQ(ApzcOf(layers[2]), ApzcOf(layers[5]));
+
+ EXPECT_EQ(node2->GetFirstChild(), node2->GetLastChild());
+ EXPECT_EQ(ApzcOf(layers[3]), node2->GetLastChild()->GetApzc());
+ EXPECT_EQ(node5->GetFirstChild(), node5->GetLastChild());
+ EXPECT_EQ(ApzcOf(layers[6]), node5->GetLastChild()->GetApzc());
+ EXPECT_EQ(ApzcOf(layers[2]), ApzcOf(layers[3])->GetParent());
+ EXPECT_EQ(ApzcOf(layers[5]), ApzcOf(layers[6])->GetParent());
+}
+
+class APZCTreeManagerGenericTesterMock : public APZCTreeManagerGenericTester {
+ public:
+ APZCTreeManagerGenericTesterMock() { CreateMockHitTester(); }
+};
+
+TEST_F(APZCTreeManagerGenericTesterMock, Bug1194876) {
+ // Create a layer tree with parent and child scrollable layers, with the
+ // child being the root content.
+ CreateTwoLayerTree(1);
+ ScopedLayerTreeRegistration registration(LayersId{0}, mcc);
+ UpdateHitTestingTree();
+
+ uint64_t blockId;
+ nsTArray<ScrollableLayerGuid> targets;
+
+ // First touch goes down, APZCTM will hit layers[1] because it is on top of
+ // layers[0], but we tell it the real target APZC is layers[0].
+ MultiTouchInput mti;
+ mti = CreateMultiTouchInput(MultiTouchInput::MULTITOUCH_START, mcc->Time());
+ mti.mTouches.AppendElement(
+ SingleTouchData(0, ScreenIntPoint(25, 50), ScreenSize(0, 0), 0, 0));
+ QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID + 1,
+ {CompositorHitTestFlags::eVisibleToHitTest,
+ CompositorHitTestFlags::eIrregularArea});
+ blockId = manager->ReceiveInputEvent(mti).mInputBlockId;
+ manager->ContentReceivedInputBlock(blockId, false);
+ targets.AppendElement(ApzcOf(layers[0])->GetGuid());
+ manager->SetTargetAPZC(blockId, targets);
+
+ // Around here, the above touch will get processed by ApzcOf(layers[0])
+
+ // Second touch goes down (first touch remains down), APZCTM will again hit
+ // layers[1]. Again we tell it both touches landed on layers[0], but because
+ // layers[1] is the RCD layer, it will end up being the multitouch target.
+ mti.mTouches.AppendElement(
+ SingleTouchData(1, ScreenIntPoint(75, 50), ScreenSize(0, 0), 0, 0));
+ // Each touch will get hit-tested, so queue two hit-test results.
+ QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID + 1,
+ {CompositorHitTestFlags::eVisibleToHitTest,
+ CompositorHitTestFlags::eIrregularArea});
+ QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID + 1,
+ {CompositorHitTestFlags::eVisibleToHitTest,
+ CompositorHitTestFlags::eIrregularArea});
+ blockId = manager->ReceiveInputEvent(mti).mInputBlockId;
+ manager->ContentReceivedInputBlock(blockId, false);
+ targets.AppendElement(ApzcOf(layers[0])->GetGuid());
+ manager->SetTargetAPZC(blockId, targets);
+
+ // Around here, the above multi-touch will get processed by ApzcOf(layers[1]).
+ // We want to ensure that ApzcOf(layers[0]) has had its state cleared, because
+ // otherwise it will do things like dispatch spurious long-tap events.
+
+ EXPECT_CALL(*mcc, HandleTap(TapType::eLongTap, _, _, _, _)).Times(0);
+}
+
+TEST_F(APZCTreeManagerGenericTesterMock, TargetChangesMidGesture_Bug1570559) {
+ // Create a layer tree with parent and child scrollable layers, with the
+ // parent being the root content.
+ CreateTwoLayerTree(0);
+ ScopedLayerTreeRegistration registration(LayersId{0}, mcc);
+ UpdateHitTestingTree();
+
+ uint64_t blockId;
+ nsTArray<ScrollableLayerGuid> targets;
+
+ // First touch goes down. APZCTM hits the child layer because it is on top
+ // (and we confirm this target), but do not prevent-default the event, causing
+ // the child APZC's gesture detector to start a long-tap timeout task.
+ MultiTouchInput mti =
+ CreateMultiTouchInput(MultiTouchInput::MULTITOUCH_START, mcc->Time());
+ mti.mTouches.AppendElement(
+ SingleTouchData(0, ScreenIntPoint(25, 50), ScreenSize(0, 0), 0, 0));
+ QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID + 1,
+ {CompositorHitTestFlags::eVisibleToHitTest,
+ CompositorHitTestFlags::eIrregularArea});
+ blockId = manager->ReceiveInputEvent(mti).mInputBlockId;
+ manager->ContentReceivedInputBlock(blockId, /* default prevented = */ false);
+ targets.AppendElement(ApzcOf(layers[1])->GetGuid());
+ manager->SetTargetAPZC(blockId, targets);
+
+ // Second touch goes down (first touch remains down). APZCTM again hits the
+ // child and we confirm this, but multi-touch events are routed to the root
+ // content APZC which is the parent. This event is prevent-defaulted, so we
+ // clear the parent's gesture state. The bug is that we fail to clear the
+ // child's gesture state.
+ mti.mTouches.AppendElement(
+ SingleTouchData(1, ScreenIntPoint(75, 50), ScreenSize(0, 0), 0, 0));
+ // Each touch will get hit-tested, so queue two hit-test results.
+ QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID + 1,
+ {CompositorHitTestFlags::eVisibleToHitTest,
+ CompositorHitTestFlags::eIrregularArea});
+ QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID + 1,
+ {CompositorHitTestFlags::eVisibleToHitTest,
+ CompositorHitTestFlags::eIrregularArea});
+ blockId = manager->ReceiveInputEvent(mti).mInputBlockId;
+ manager->ContentReceivedInputBlock(blockId, /* default prevented = */ true);
+ targets.AppendElement(ApzcOf(layers[1])->GetGuid());
+ manager->SetTargetAPZC(blockId, targets);
+
+ // If we've failed to clear the child's gesture state, then the long tap
+ // timeout task will fire in TearDown() and a long-tap will be dispatched.
+ EXPECT_CALL(*mcc, HandleTap(TapType::eLongTap, _, _, _, _)).Times(0);
+}
+
+TEST_F(APZCTreeManagerGenericTesterMock, Bug1198900) {
+ // This is just a test that cancels a wheel event to make sure it doesn't
+ // crash.
+ CreateSimpleScrollingLayer();
+ ScopedLayerTreeRegistration registration(LayersId{0}, mcc);
+ UpdateHitTestingTree();
+
+ ScreenPoint origin(100, 50);
+ ScrollWheelInput swi(mcc->Time(), 0, ScrollWheelInput::SCROLLMODE_INSTANT,
+ ScrollWheelInput::SCROLLDELTA_PIXEL, origin, 0, 10,
+ false, WheelDeltaAdjustmentStrategy::eNone);
+ uint64_t blockId;
+ QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID,
+ {CompositorHitTestFlags::eVisibleToHitTest,
+ CompositorHitTestFlags::eIrregularArea});
+ blockId = manager->ReceiveInputEvent(swi).mInputBlockId;
+ manager->ContentReceivedInputBlock(blockId, /* preventDefault= */ true);
+}
+
+// The next two tests check that APZ clamps the scroll offset it composites even
+// if the main thread fails to do so. (The main thread will always clamp its
+// scroll offset internally, but it may not send APZ the clamped version for
+// scroll offset synchronization reasons.)
+TEST_F(APZCTreeManagerTester, Bug1551582) {
+ // The simple layer tree has a scrollable rect of 500x500 and a composition
+ // bounds of 200x200, leading to a scroll range of (0,0,300,300).
+ CreateSimpleScrollingLayer();
+ ScopedLayerTreeRegistration registration(LayersId{0}, mcc);
+ UpdateHitTestingTree();
+
+ // Simulate the main thread scrolling to the end of the scroll range.
+ ModifyFrameMetrics(root, [](ScrollMetadata& aSm, FrameMetrics& aMetrics) {
+ aMetrics.SetLayoutScrollOffset(CSSPoint(300, 300));
+ nsTArray<ScrollPositionUpdate> scrollUpdates;
+ scrollUpdates.AppendElement(ScrollPositionUpdate::NewScroll(
+ ScrollOrigin::Other, CSSPoint::ToAppUnits(CSSPoint(300, 300))));
+ aSm.SetScrollUpdates(scrollUpdates);
+ aMetrics.SetScrollGeneration(scrollUpdates.LastElement().GetGeneration());
+ });
+ UpdateHitTestingTree();
+
+ // Sanity check.
+ RefPtr<TestAsyncPanZoomController> apzc = ApzcOf(root);
+ CSSPoint compositedScrollOffset = apzc->GetCompositedScrollOffset();
+ EXPECT_EQ(CSSPoint(300, 300), compositedScrollOffset);
+
+ // Simulate the main thread shrinking the scrollable rect to 400x400 (and
+ // thereby the scroll range to (0,0,200,200) without sending a new scroll
+ // offset update for the clamped scroll position (200,200).
+ ModifyFrameMetrics(root, [](ScrollMetadata& aSm, FrameMetrics& aMetrics) {
+ aMetrics.SetScrollableRect(CSSRect(0, 0, 400, 400));
+ });
+ UpdateHitTestingTree();
+
+ // Check that APZ has clamped the scroll offset to (200,200) for us.
+ compositedScrollOffset = apzc->GetCompositedScrollOffset();
+ EXPECT_EQ(CSSPoint(200, 200), compositedScrollOffset);
+}
+TEST_F(APZCTreeManagerTester, Bug1557424) {
+ // The simple layer tree has a scrollable rect of 500x500 and a composition
+ // bounds of 200x200, leading to a scroll range of (0,0,300,300).
+ CreateSimpleScrollingLayer();
+ ScopedLayerTreeRegistration registration(LayersId{0}, mcc);
+ UpdateHitTestingTree();
+
+ // Simulate the main thread scrolling to the end of the scroll range.
+ ModifyFrameMetrics(root, [](ScrollMetadata& aSm, FrameMetrics& aMetrics) {
+ aMetrics.SetLayoutScrollOffset(CSSPoint(300, 300));
+ nsTArray<ScrollPositionUpdate> scrollUpdates;
+ scrollUpdates.AppendElement(ScrollPositionUpdate::NewScroll(
+ ScrollOrigin::Other, CSSPoint::ToAppUnits(CSSPoint(300, 300))));
+ aSm.SetScrollUpdates(scrollUpdates);
+ aMetrics.SetScrollGeneration(scrollUpdates.LastElement().GetGeneration());
+ });
+ UpdateHitTestingTree();
+
+ // Sanity check.
+ RefPtr<TestAsyncPanZoomController> apzc = ApzcOf(root);
+ CSSPoint compositedScrollOffset = apzc->GetCompositedScrollOffset();
+ EXPECT_EQ(CSSPoint(300, 300), compositedScrollOffset);
+
+ // Simulate the main thread expanding the composition bounds to 300x300 (and
+ // thereby shrinking the scroll range to (0,0,200,200) without sending a new
+ // scroll offset update for the clamped scroll position (200,200).
+ ModifyFrameMetrics(root, [](ScrollMetadata& aSm, FrameMetrics& aMetrics) {
+ aMetrics.SetCompositionBounds(ParentLayerRect(0, 0, 300, 300));
+ });
+ UpdateHitTestingTree();
+
+ // Check that APZ has clamped the scroll offset to (200,200) for us.
+ compositedScrollOffset = apzc->GetCompositedScrollOffset();
+ EXPECT_EQ(CSSPoint(200, 200), compositedScrollOffset);
+}
+
+TEST_F(APZCTreeManagerTester, Bug1805601) {
+ // The simple layer tree has a scrollable rect of 500x500 and a composition
+ // bounds of 200x200, leading to a scroll range of (0,0,300,300) at unit zoom.
+ CreateSimpleScrollingLayer();
+ ScopedLayerTreeRegistration registration(LayersId{0}, mcc);
+ UpdateHitTestingTree();
+ RefPtr<TestAsyncPanZoomController> apzc = ApzcOf(root);
+ FrameMetrics& compositorMetrics = apzc->GetFrameMetrics();
+ EXPECT_EQ(CSSRect(0, 0, 300, 300), compositorMetrics.CalculateScrollRange());
+
+ // Zoom the page in by 2x. This needs to be reflected in each of the pres
+ // shell resolution, cumulative resolution, and zoom. This makes the scroll
+ // range (0,0,400,400).
+ compositorMetrics.SetZoom(CSSToParentLayerScale(2.0));
+ EXPECT_EQ(CSSRect(0, 0, 400, 400), compositorMetrics.CalculateScrollRange());
+
+ // Scroll to an area inside the 2x scroll range but outside the original one.
+ compositorMetrics.ClampAndSetVisualScrollOffset(CSSPoint(350, 350));
+ EXPECT_EQ(CSSPoint(350, 350), compositorMetrics.GetVisualScrollOffset());
+
+ // Simulate a main-thread update where the zoom is reset to 1x but the visual
+ // scroll offset is unmodified.
+ ModifyFrameMetrics(root, [](ScrollMetadata& aSm, FrameMetrics& aMetrics) {
+ // Changes to |compositorMetrics| are not reflected in |aMetrics|, which
+ // is the "layer tree" copy, so we don't need to explicitly set the zoom to
+ // 1.0 (it still has that as the initial value), but we do need to set
+ // the visual scroll offset to the same value the APZ copy has.
+ aMetrics.SetVisualScrollOffset(CSSPoint(350, 350));
+
+ // Needed to get APZ to accept the 1.0 zoom in |aMetrics|, otherwise
+ // it will act as though its zoom is newer (e.g. an async zoom that hasn't
+ // been repainted yet) and ignore ours.
+ aSm.SetResolutionUpdated(true);
+ });
+ UpdateHitTestingTree();
+
+ // Check that APZ clamped the scroll offset.
+ EXPECT_EQ(CSSRect(0, 0, 300, 300), compositorMetrics.CalculateScrollRange());
+ EXPECT_EQ(CSSPoint(300, 300), compositorMetrics.GetVisualScrollOffset());
+}
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