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Diffstat (limited to 'chromium/cc/layers/layer_impl_unittest.cc')
| -rw-r--r-- | chromium/cc/layers/layer_impl_unittest.cc | 562 |
1 files changed, 562 insertions, 0 deletions
diff --git a/chromium/cc/layers/layer_impl_unittest.cc b/chromium/cc/layers/layer_impl_unittest.cc new file mode 100644 index 00000000000..9c6dbfe3790 --- /dev/null +++ b/chromium/cc/layers/layer_impl_unittest.cc @@ -0,0 +1,562 @@ +// Copyright 2011 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include "cc/layers/layer_impl.h" + +#include "cc/output/filter_operation.h" +#include "cc/output/filter_operations.h" +#include "cc/test/fake_impl_proxy.h" +#include "cc/test/fake_layer_tree_host_impl.h" +#include "cc/test/fake_output_surface.h" +#include "cc/test/geometry_test_utils.h" +#include "cc/trees/layer_tree_impl.h" +#include "cc/trees/single_thread_proxy.h" +#include "testing/gmock/include/gmock/gmock.h" +#include "testing/gtest/include/gtest/gtest.h" +#include "third_party/skia/include/effects/SkBlurImageFilter.h" + +namespace cc { +namespace { + +#define EXECUTE_AND_VERIFY_SUBTREE_CHANGED(code_to_test) \ + root->ResetAllChangeTrackingForSubtree(); \ + code_to_test; \ + EXPECT_TRUE(root->LayerPropertyChanged()); \ + EXPECT_TRUE(child->LayerPropertyChanged()); \ + EXPECT_TRUE(grand_child->LayerPropertyChanged()); \ + EXPECT_FALSE(root->LayerSurfacePropertyChanged()) + +#define EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(code_to_test) \ + root->ResetAllChangeTrackingForSubtree(); \ + code_to_test; \ + EXPECT_FALSE(root->LayerPropertyChanged()); \ + EXPECT_FALSE(child->LayerPropertyChanged()); \ + EXPECT_FALSE(grand_child->LayerPropertyChanged()); \ + EXPECT_FALSE(root->LayerSurfacePropertyChanged()) + +#define EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(code_to_test) \ + root->ResetAllChangeTrackingForSubtree(); \ + code_to_test; \ + EXPECT_TRUE(root->LayerPropertyChanged()); \ + EXPECT_FALSE(child->LayerPropertyChanged()); \ + EXPECT_FALSE(grand_child->LayerPropertyChanged()); \ + EXPECT_FALSE(root->LayerSurfacePropertyChanged()) + +#define EXECUTE_AND_VERIFY_ONLY_SURFACE_CHANGED(code_to_test) \ + root->ResetAllChangeTrackingForSubtree(); \ + code_to_test; \ + EXPECT_FALSE(root->LayerPropertyChanged()); \ + EXPECT_FALSE(child->LayerPropertyChanged()); \ + EXPECT_FALSE(grand_child->LayerPropertyChanged()); \ + EXPECT_TRUE(root->LayerSurfacePropertyChanged()) + +#define VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(code_to_test) \ + root->ResetAllChangeTrackingForSubtree(); \ + host_impl.ForcePrepareToDraw(); \ + EXPECT_FALSE(host_impl.active_tree()->needs_update_draw_properties()); \ + code_to_test; \ + EXPECT_TRUE(host_impl.active_tree()->needs_update_draw_properties()); + +#define VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(code_to_test) \ + root->ResetAllChangeTrackingForSubtree(); \ + host_impl.ForcePrepareToDraw(); \ + EXPECT_FALSE(host_impl.active_tree()->needs_update_draw_properties()); \ + code_to_test; \ + EXPECT_FALSE(host_impl.active_tree()->needs_update_draw_properties()); + +TEST(LayerImplTest, VerifyLayerChangesAreTrackedProperly) { + // + // This test checks that layerPropertyChanged() has the correct behavior. + // + + // The constructor on this will fake that we are on the correct thread. + // Create a simple LayerImpl tree: + FakeImplProxy proxy; + FakeLayerTreeHostImpl host_impl(&proxy); + EXPECT_TRUE(host_impl.InitializeRenderer(CreateFakeOutputSurface())); + scoped_ptr<LayerImpl> root = LayerImpl::Create(host_impl.active_tree(), 1); + root->AddChild(LayerImpl::Create(host_impl.active_tree(), 2)); + LayerImpl* child = root->children()[0]; + child->AddChild(LayerImpl::Create(host_impl.active_tree(), 3)); + LayerImpl* grand_child = child->children()[0]; + + root->SetScrollable(true); + + // Adding children is an internal operation and should not mark layers as + // changed. + EXPECT_FALSE(root->LayerPropertyChanged()); + EXPECT_FALSE(child->LayerPropertyChanged()); + EXPECT_FALSE(grand_child->LayerPropertyChanged()); + + gfx::PointF arbitrary_point_f = gfx::PointF(0.125f, 0.25f); + float arbitrary_number = 0.352f; + gfx::Size arbitrary_size = gfx::Size(111, 222); + gfx::Point arbitrary_point = gfx::Point(333, 444); + gfx::Vector2d arbitrary_vector2d = gfx::Vector2d(111, 222); + gfx::Rect arbitrary_rect = gfx::Rect(arbitrary_point, arbitrary_size); + gfx::RectF arbitrary_rect_f = + gfx::RectF(arbitrary_point_f, gfx::SizeF(1.234f, 5.678f)); + SkColor arbitrary_color = SkColorSetRGB(10, 20, 30); + gfx::Transform arbitrary_transform; + arbitrary_transform.Scale3d(0.1, 0.2, 0.3); + FilterOperations arbitrary_filters; + arbitrary_filters.Append(FilterOperation::CreateOpacityFilter(0.5f)); + skia::RefPtr<SkImageFilter> arbitrary_filter = + skia::AdoptRef(new SkBlurImageFilter(SK_Scalar1, SK_Scalar1)); + + // These properties are internal, and should not be considered "change" when + // they are used. + EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE( + root->set_update_rect(arbitrary_rect_f)); + EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE( + root->SetMaxScrollOffset(arbitrary_vector2d)); + + // Changing these properties affects the entire subtree of layers. + EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetAnchorPoint(arbitrary_point_f)); + EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetAnchorPointZ(arbitrary_number)); + EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetFilters(arbitrary_filters)); + EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetFilters(FilterOperations())); + EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetFilter(arbitrary_filter)); + EXECUTE_AND_VERIFY_SUBTREE_CHANGED( + root->SetMaskLayer(LayerImpl::Create(host_impl.active_tree(), 4))); + EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetMasksToBounds(true)); + EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetContentsOpaque(true)); + EXECUTE_AND_VERIFY_SUBTREE_CHANGED( + root->SetReplicaLayer(LayerImpl::Create(host_impl.active_tree(), 5))); + EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetPosition(arbitrary_point_f)); + EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetPreserves3d(true)); + EXECUTE_AND_VERIFY_SUBTREE_CHANGED( + root->SetDoubleSided(false)); // constructor initializes it to "true". + EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->ScrollBy(arbitrary_vector2d)); + EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetScrollDelta(gfx::Vector2d())); + EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetScrollOffset(arbitrary_vector2d)); + EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetHideLayerAndSubtree(true)); + + // Changing these properties only affects the layer itself. + EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetContentBounds(arbitrary_size)); + EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED( + root->SetContentsScale(arbitrary_number, arbitrary_number)); + EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetDrawsContent(true)); + EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED( + root->SetBackgroundColor(arbitrary_color)); + EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED( + root->SetBackgroundFilters(arbitrary_filters)); + + // Changing these properties only affects how render surface is drawn + EXECUTE_AND_VERIFY_ONLY_SURFACE_CHANGED(root->SetOpacity(arbitrary_number)); + EXECUTE_AND_VERIFY_ONLY_SURFACE_CHANGED( + root->SetTransform(arbitrary_transform)); + + // Special case: check that sublayer transform changes all layer's + // descendants, but not the layer itself. + root->ResetAllChangeTrackingForSubtree(); + root->SetSublayerTransform(arbitrary_transform); + EXPECT_FALSE(root->LayerPropertyChanged()); + EXPECT_TRUE(child->LayerPropertyChanged()); + EXPECT_TRUE(grand_child->LayerPropertyChanged()); + + // Special case: check that SetBounds changes behavior depending on + // masksToBounds. + root->SetMasksToBounds(false); + EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetBounds(gfx::Size(135, 246))); + root->SetMasksToBounds(true); + // Should be a different size than previous call, to ensure it marks tree + // changed. + EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetBounds(arbitrary_size)); + + // After setting all these properties already, setting to the exact same + // values again should not cause any change. + EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE( + root->SetAnchorPoint(arbitrary_point_f)); + EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE( + root->SetAnchorPointZ(arbitrary_number)); + EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetMasksToBounds(true)); + EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE( + root->SetPosition(arbitrary_point_f)); + EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetPreserves3d(true)); + EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE( + root->SetTransform(arbitrary_transform)); + EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE( + root->SetDoubleSided(false)); // constructor initializes it to "true". + EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE( + root->SetScrollDelta(gfx::Vector2d())); + EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE( + root->SetScrollOffset(arbitrary_vector2d)); + EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE( + root->SetContentBounds(arbitrary_size)); + EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE( + root->SetContentsScale(arbitrary_number, arbitrary_number)); + EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetContentsOpaque(true)); + EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetOpacity(arbitrary_number)); + EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetDrawsContent(true)); + EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE( + root->SetSublayerTransform(arbitrary_transform)); + EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetBounds(arbitrary_size)); +} + +TEST(LayerImplTest, VerifyNeedsUpdateDrawProperties) { + FakeImplProxy proxy; + FakeLayerTreeHostImpl host_impl(&proxy); + EXPECT_TRUE(host_impl.InitializeRenderer(CreateFakeOutputSurface())); + scoped_ptr<LayerImpl> root = LayerImpl::Create(host_impl.active_tree(), 1); + root->SetScrollable(true); + + gfx::PointF arbitrary_point_f = gfx::PointF(0.125f, 0.25f); + float arbitrary_number = 0.352f; + gfx::Size arbitrary_size = gfx::Size(111, 222); + gfx::Point arbitrary_point = gfx::Point(333, 444); + gfx::Vector2d arbitrary_vector2d = gfx::Vector2d(111, 222); + gfx::Vector2d large_vector2d = gfx::Vector2d(1000, 1000); + gfx::Rect arbitrary_rect = gfx::Rect(arbitrary_point, arbitrary_size); + gfx::RectF arbitrary_rect_f = + gfx::RectF(arbitrary_point_f, gfx::SizeF(1.234f, 5.678f)); + SkColor arbitrary_color = SkColorSetRGB(10, 20, 30); + gfx::Transform arbitrary_transform; + arbitrary_transform.Scale3d(0.1, 0.2, 0.3); + FilterOperations arbitrary_filters; + arbitrary_filters.Append(FilterOperation::CreateOpacityFilter(0.5f)); + skia::RefPtr<SkImageFilter> arbitrary_filter = + skia::AdoptRef(new SkBlurImageFilter(SK_Scalar1, SK_Scalar1)); + + // Related filter functions. + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilters(arbitrary_filters)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilters(arbitrary_filters)); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilters(FilterOperations())); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilter(arbitrary_filter)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilter(arbitrary_filter)); + + // Related scrolling functions. + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetMaxScrollOffset(large_vector2d)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetMaxScrollOffset(large_vector2d)); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->ScrollBy(arbitrary_vector2d)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->ScrollBy(gfx::Vector2d())); + root->SetScrollDelta(gfx::Vector2d(0, 0)); + host_impl.ForcePrepareToDraw(); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetScrollDelta(arbitrary_vector2d)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetScrollDelta(arbitrary_vector2d)); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetScrollOffset(arbitrary_vector2d)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetScrollOffset(arbitrary_vector2d)); + + // Unrelated functions, always set to new values, always set needs update. + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetAnchorPointZ(arbitrary_number)); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetMaskLayer(LayerImpl::Create(host_impl.active_tree(), 4))); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetMasksToBounds(true)); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetContentsOpaque(true)); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetReplicaLayer(LayerImpl::Create(host_impl.active_tree(), 5))); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetPosition(arbitrary_point_f)); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetPreserves3d(true)); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetDoubleSided(false)); // constructor initializes it to "true". + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetContentBounds(arbitrary_size)); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetContentsScale(arbitrary_number, arbitrary_number)); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetDrawsContent(true)); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetBackgroundColor(arbitrary_color)); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetBackgroundFilters(arbitrary_filters)); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetOpacity(arbitrary_number)); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetTransform(arbitrary_transform)); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetSublayerTransform(arbitrary_transform)); + VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetBounds(arbitrary_size)); + + // Unrelated functions, set to the same values, no needs update. + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetAnchorPointZ(arbitrary_number)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilter(arbitrary_filter)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetMasksToBounds(true)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetContentsOpaque(true)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetPosition(arbitrary_point_f)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetPreserves3d(true)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetDoubleSided(false)); // constructor initializes it to "true". + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetContentBounds(arbitrary_size)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetContentsScale(arbitrary_number, arbitrary_number)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetDrawsContent(true)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetBackgroundColor(arbitrary_color)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetBackgroundFilters(arbitrary_filters)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetOpacity(arbitrary_number)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetTransform(arbitrary_transform)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES( + root->SetSublayerTransform(arbitrary_transform)); + VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetBounds(arbitrary_size)); +} + +TEST(LayerImplTest, SafeOpaqueBackgroundColor) { + FakeImplProxy proxy; + FakeLayerTreeHostImpl host_impl(&proxy); + EXPECT_TRUE(host_impl.InitializeRenderer(CreateFakeOutputSurface())); + scoped_ptr<LayerImpl> layer = LayerImpl::Create(host_impl.active_tree(), 1); + + for (int contents_opaque = 0; contents_opaque < 2; ++contents_opaque) { + for (int layer_opaque = 0; layer_opaque < 2; ++layer_opaque) { + for (int host_opaque = 0; host_opaque < 2; ++host_opaque) { + layer->SetContentsOpaque(!!contents_opaque); + layer->SetBackgroundColor(layer_opaque ? SK_ColorRED + : SK_ColorTRANSPARENT); + host_impl.active_tree()->set_background_color( + host_opaque ? SK_ColorRED : SK_ColorTRANSPARENT); + + SkColor safe_color = layer->SafeOpaqueBackgroundColor(); + if (contents_opaque) { + EXPECT_EQ(SkColorGetA(safe_color), 255u) + << "Flags: " << contents_opaque << ", " << layer_opaque << ", " + << host_opaque << "\n"; + } else { + EXPECT_NE(SkColorGetA(safe_color), 255u) + << "Flags: " << contents_opaque << ", " << layer_opaque << ", " + << host_opaque << "\n"; + } + } + } + } +} + +class LayerImplScrollTest : public testing::Test { + public: + LayerImplScrollTest() : host_impl_(&proxy_), root_id_(7) { + host_impl_.active_tree() + ->SetRootLayer(LayerImpl::Create(host_impl_.active_tree(), root_id_)); + host_impl_.active_tree()->root_layer()->SetScrollable(true); + } + + LayerImpl* layer() { return host_impl_.active_tree()->root_layer(); } + + private: + FakeImplProxy proxy_; + FakeLayerTreeHostImpl host_impl_; + int root_id_; +}; + +TEST_F(LayerImplScrollTest, ScrollByWithZeroOffset) { + // Test that LayerImpl::ScrollBy only affects ScrollDelta and total scroll + // offset is bounded by the range [0, max scroll offset]. + gfx::Vector2d max_scroll_offset(50, 80); + layer()->SetMaxScrollOffset(max_scroll_offset); + + EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->scroll_offset()); + EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->ScrollDelta()); + + layer()->ScrollBy(gfx::Vector2dF(-100, 100)); + EXPECT_VECTOR_EQ(gfx::Vector2dF(0, 80), layer()->TotalScrollOffset()); + + EXPECT_VECTOR_EQ(layer()->ScrollDelta(), layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->scroll_offset()); + + layer()->ScrollBy(gfx::Vector2dF(100, -100)); + EXPECT_VECTOR_EQ(gfx::Vector2dF(50, 0), layer()->TotalScrollOffset()); + + EXPECT_VECTOR_EQ(layer()->ScrollDelta(), layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->scroll_offset()); +} + +TEST_F(LayerImplScrollTest, ScrollByWithNonZeroOffset) { + gfx::Vector2d max_scroll_offset(50, 80); + gfx::Vector2d scroll_offset(10, 5); + layer()->SetMaxScrollOffset(max_scroll_offset); + layer()->SetScrollOffset(scroll_offset); + + EXPECT_VECTOR_EQ(scroll_offset, layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset()); + EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->ScrollDelta()); + + layer()->ScrollBy(gfx::Vector2dF(-100, 100)); + EXPECT_VECTOR_EQ(gfx::Vector2dF(0, 80), layer()->TotalScrollOffset()); + + EXPECT_VECTOR_EQ(layer()->ScrollDelta() + scroll_offset, + layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset()); + + layer()->ScrollBy(gfx::Vector2dF(100, -100)); + EXPECT_VECTOR_EQ(gfx::Vector2dF(50, 0), layer()->TotalScrollOffset()); + + EXPECT_VECTOR_EQ(layer()->ScrollDelta() + scroll_offset, + layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset()); +} + +class ScrollDelegateIgnore : public LayerScrollOffsetDelegate { + public: + virtual void SetTotalScrollOffset(gfx::Vector2dF new_value) OVERRIDE {} + virtual gfx::Vector2dF GetTotalScrollOffset() OVERRIDE { + return fixed_offset_; + } + + void set_fixed_offset(gfx::Vector2dF fixed_offset) { + fixed_offset_ = fixed_offset; + } + + private: + gfx::Vector2dF fixed_offset_; +}; + +TEST_F(LayerImplScrollTest, ScrollByWithIgnoringDelegate) { + gfx::Vector2d max_scroll_offset(50, 80); + gfx::Vector2d scroll_offset(10, 5); + layer()->SetMaxScrollOffset(max_scroll_offset); + layer()->SetScrollOffset(scroll_offset); + + EXPECT_VECTOR_EQ(scroll_offset, layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset()); + EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->ScrollDelta()); + + ScrollDelegateIgnore delegate; + gfx::Vector2dF fixed_offset(32, 12); + delegate.set_fixed_offset(fixed_offset); + layer()->SetScrollOffsetDelegate(&delegate); + + EXPECT_VECTOR_EQ(fixed_offset, layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset()); + + layer()->ScrollBy(gfx::Vector2dF(-100, 100)); + + EXPECT_VECTOR_EQ(fixed_offset, layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset()); + + layer()->SetScrollOffsetDelegate(NULL); + + EXPECT_VECTOR_EQ(fixed_offset, layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset()); + + gfx::Vector2dF scroll_delta(1, 1); + layer()->ScrollBy(scroll_delta); + + EXPECT_VECTOR_EQ(fixed_offset + scroll_delta, layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset()); +} + +class ScrollDelegateAccept : public LayerScrollOffsetDelegate { + public: + virtual void SetTotalScrollOffset(gfx::Vector2dF new_value) OVERRIDE { + current_offset_ = new_value; + } + virtual gfx::Vector2dF GetTotalScrollOffset() OVERRIDE { + return current_offset_; + } + + private: + gfx::Vector2dF current_offset_; +}; + +TEST_F(LayerImplScrollTest, ScrollByWithAcceptingDelegate) { + gfx::Vector2d max_scroll_offset(50, 80); + gfx::Vector2d scroll_offset(10, 5); + layer()->SetMaxScrollOffset(max_scroll_offset); + layer()->SetScrollOffset(scroll_offset); + + EXPECT_VECTOR_EQ(scroll_offset, layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset()); + EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->ScrollDelta()); + + ScrollDelegateAccept delegate; + layer()->SetScrollOffsetDelegate(&delegate); + + EXPECT_VECTOR_EQ(scroll_offset, layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset()); + EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->ScrollDelta()); + + layer()->ScrollBy(gfx::Vector2dF(-100, 100)); + + EXPECT_VECTOR_EQ(gfx::Vector2dF(0, 80), layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset()); + + layer()->SetScrollOffsetDelegate(NULL); + + EXPECT_VECTOR_EQ(gfx::Vector2dF(0, 80), layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset()); + + gfx::Vector2dF scroll_delta(1, 1); + layer()->ScrollBy(scroll_delta); + + EXPECT_VECTOR_EQ(gfx::Vector2dF(1, 80), layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset()); +} + +TEST_F(LayerImplScrollTest, ApplySentScrollsNoDelegate) { + gfx::Vector2d max_scroll_offset(50, 80); + gfx::Vector2d scroll_offset(10, 5); + gfx::Vector2dF scroll_delta(20.5f, 8.5f); + gfx::Vector2d sent_scroll_delta(12, -3); + + layer()->SetMaxScrollOffset(max_scroll_offset); + layer()->SetScrollOffset(scroll_offset); + layer()->ScrollBy(scroll_delta); + layer()->SetSentScrollDelta(sent_scroll_delta); + + EXPECT_VECTOR_EQ(scroll_offset + scroll_delta, layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_delta, layer()->ScrollDelta()); + EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset()); + EXPECT_VECTOR_EQ(sent_scroll_delta, layer()->sent_scroll_delta()); + + layer()->ApplySentScrollDeltas(); + + EXPECT_VECTOR_EQ(scroll_offset + scroll_delta, layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_delta - sent_scroll_delta, layer()->ScrollDelta()); + EXPECT_VECTOR_EQ(scroll_offset + sent_scroll_delta, layer()->scroll_offset()); + EXPECT_VECTOR_EQ(gfx::Vector2d(), layer()->sent_scroll_delta()); +} + +TEST_F(LayerImplScrollTest, ApplySentScrollsWithIgnoringDelegate) { + gfx::Vector2d max_scroll_offset(50, 80); + gfx::Vector2d scroll_offset(10, 5); + gfx::Vector2d sent_scroll_delta(12, -3); + gfx::Vector2dF fixed_offset(32, 12); + + layer()->SetMaxScrollOffset(max_scroll_offset); + layer()->SetScrollOffset(scroll_offset); + ScrollDelegateIgnore delegate; + delegate.set_fixed_offset(fixed_offset); + layer()->SetScrollOffsetDelegate(&delegate); + layer()->SetSentScrollDelta(sent_scroll_delta); + + EXPECT_VECTOR_EQ(fixed_offset, layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset()); + EXPECT_VECTOR_EQ(sent_scroll_delta, layer()->sent_scroll_delta()); + + layer()->ApplySentScrollDeltas(); + + EXPECT_VECTOR_EQ(fixed_offset, layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_offset + sent_scroll_delta, layer()->scroll_offset()); + EXPECT_VECTOR_EQ(gfx::Vector2d(), layer()->sent_scroll_delta()); +} + +TEST_F(LayerImplScrollTest, ApplySentScrollsWithAcceptingDelegate) { + gfx::Vector2d max_scroll_offset(50, 80); + gfx::Vector2d scroll_offset(10, 5); + gfx::Vector2d sent_scroll_delta(12, -3); + gfx::Vector2dF scroll_delta(20.5f, 8.5f); + + layer()->SetMaxScrollOffset(max_scroll_offset); + layer()->SetScrollOffset(scroll_offset); + ScrollDelegateAccept delegate; + layer()->SetScrollOffsetDelegate(&delegate); + layer()->ScrollBy(scroll_delta); + layer()->SetSentScrollDelta(sent_scroll_delta); + + EXPECT_VECTOR_EQ(scroll_offset + scroll_delta, layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset()); + EXPECT_VECTOR_EQ(sent_scroll_delta, layer()->sent_scroll_delta()); + + layer()->ApplySentScrollDeltas(); + + EXPECT_VECTOR_EQ(scroll_offset + scroll_delta, layer()->TotalScrollOffset()); + EXPECT_VECTOR_EQ(scroll_offset + sent_scroll_delta, layer()->scroll_offset()); + EXPECT_VECTOR_EQ(gfx::Vector2d(), layer()->sent_scroll_delta()); +} + +} // namespace +} // namespace cc |