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layer_unittest.cc
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// 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.h"
#include <stddef.h>
#include <memory>
#include <utility>
#include "base/bind.h"
#include "base/containers/contains.h"
#include "base/threading/thread_task_runner_handle.h"
#include "cc/animation/animation_host.h"
#include "cc/animation/animation_id_provider.h"
#include "cc/base/math_util.h"
#include "cc/layers/layer_impl.h"
#include "cc/layers/picture_layer.h"
#include "cc/layers/solid_color_scrollbar_layer.h"
#include "cc/test/animation_test_common.h"
#include "cc/test/cc_test_suite.h"
#include "cc/test/fake_content_layer_client.h"
#include "cc/test/fake_impl_task_runner_provider.h"
#include "cc/test/fake_layer_tree_host.h"
#include "cc/test/fake_layer_tree_host_client.h"
#include "cc/test/fake_layer_tree_host_impl.h"
#include "cc/test/geometry_test_utils.h"
#include "cc/test/layer_test_common.h"
#include "cc/test/stub_layer_tree_host_single_thread_client.h"
#include "cc/test/test_task_graph_runner.h"
#include "cc/trees/clip_node.h"
#include "cc/trees/layer_tree_host.h"
#include "cc/trees/single_thread_proxy.h"
#include "cc/trees/transform_node.h"
#include "components/viz/common/frame_sinks/copy_output_request.h"
#include "components/viz/common/frame_sinks/copy_output_result.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "third_party/skia/include/core/SkColor.h"
#include "ui/gfx/animation/keyframe/keyframed_animation_curve.h"
#include "ui/gfx/geometry/point3_f.h"
#include "ui/gfx/geometry/point_f.h"
#include "ui/gfx/geometry/scroll_offset.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gfx/geometry/vector2d_f.h"
#include "ui/gfx/transform.h"
using ::testing::AnyNumber;
using ::testing::AtLeast;
using ::testing::Mock;
using ::testing::StrictMock;
using ::testing::_;
#define EXPECT_SET_NEEDS_FULL_TREE_SYNC(expect, code_to_test) \
do { \
EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times((expect)); \
code_to_test; \
Mock::VerifyAndClearExpectations(layer_tree_host_.get()); \
} while (false)
#define EXECUTE_AND_VERIFY_SUBTREE_CHANGED(code_to_test) \
code_to_test; \
root->layer_tree_host()->BuildPropertyTreesForTesting(); \
EXPECT_FALSE(root->subtree_property_changed()); \
EXPECT_TRUE(top->subtree_property_changed()); \
EXPECT_TRUE(base::Contains( \
top->layer_tree_host()->LayersThatShouldPushProperties(), top.get())); \
EXPECT_TRUE(child->subtree_property_changed()); \
EXPECT_TRUE(base::Contains( \
child->layer_tree_host()->LayersThatShouldPushProperties(), \
child.get())); \
EXPECT_TRUE(grand_child->subtree_property_changed()); \
EXPECT_TRUE(base::Contains( \
grand_child->layer_tree_host()->LayersThatShouldPushProperties(), \
grand_child.get()));
#define EXECUTE_AND_VERIFY_SUBTREE_NOT_CHANGED(code_to_test) \
code_to_test; \
root->layer_tree_host()->BuildPropertyTreesForTesting(); \
EXPECT_FALSE(root->subtree_property_changed()); \
EXPECT_FALSE(top->subtree_property_changed()); \
EXPECT_FALSE(base::Contains( \
top->layer_tree_host()->LayersThatShouldPushProperties(), top.get())); \
EXPECT_FALSE(child->subtree_property_changed()); \
EXPECT_FALSE(base::Contains( \
child->layer_tree_host()->LayersThatShouldPushProperties(), \
child.get())); \
EXPECT_FALSE(grand_child->subtree_property_changed()); \
EXPECT_FALSE(base::Contains( \
grand_child->layer_tree_host()->LayersThatShouldPushProperties(), \
grand_child.get()));
#define EXECUTE_AND_VERIFY_SUBTREE_CHANGES_RESET(code_to_test) \
code_to_test; \
EXPECT_FALSE(root->subtree_property_changed()); \
EXPECT_FALSE(top->subtree_property_changed()); \
EXPECT_FALSE(child->subtree_property_changed()); \
EXPECT_FALSE(grand_child->subtree_property_changed());
namespace cc {
namespace {
static auto kArbitrarySourceId1 =
base::UnguessableToken::Deserialize(0xdead, 0xbeef);
static auto kArbitrarySourceId2 =
base::UnguessableToken::Deserialize(0xdead, 0xbee0);
class MockLayerTreeHost : public LayerTreeHost {
public:
MockLayerTreeHost(LayerTreeHostSingleThreadClient* single_thread_client,
LayerTreeHost::InitParams params)
: LayerTreeHost(std::move(params), CompositorMode::SINGLE_THREADED) {
InitializeSingleThreaded(single_thread_client,
base::ThreadTaskRunnerHandle::Get());
}
MOCK_METHOD0(SetNeedsCommit, void());
MOCK_METHOD0(SetNeedsUpdateLayers, void());
MOCK_METHOD0(SetNeedsFullTreeSync, void());
};
bool LayerNeedsDisplay(Layer* layer) {
return !layer->update_rect().IsEmpty();
}
class LayerTest : public testing::Test {
public:
LayerTest()
: host_impl_(LayerTreeSettings(),
&task_runner_provider_,
&task_graph_runner_) {
timeline_impl_ =
AnimationTimeline::Create(AnimationIdProvider::NextTimelineId());
timeline_impl_->set_is_impl_only(true);
host_impl_.animation_host()->AddAnimationTimeline(timeline_impl_);
}
const LayerTreeSettings& settings() { return settings_; }
scoped_refptr<AnimationTimeline> timeline_impl() { return timeline_impl_; }
protected:
void SetUp() override {
animation_host_ = AnimationHost::CreateForTesting(ThreadInstance::MAIN);
LayerTreeHost::InitParams params;
params.client = &fake_client_;
params.settings = &settings_;
params.task_graph_runner = &task_graph_runner_;
params.mutator_host = animation_host_.get();
layer_tree_host_ = std::make_unique<StrictMock<MockLayerTreeHost>>(
&single_thread_client_, std::move(params));
}
void TearDown() override {
Mock::VerifyAndClearExpectations(layer_tree_host_.get());
EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times(AnyNumber());
parent_ = nullptr;
child1_ = nullptr;
child2_ = nullptr;
child3_ = nullptr;
grand_child1_ = nullptr;
grand_child2_ = nullptr;
grand_child3_ = nullptr;
layer_tree_host_->SetRootLayer(nullptr);
animation_host_->SetMutatorHostClient(nullptr);
layer_tree_host_ = nullptr;
animation_host_ = nullptr;
}
void SimulateCommitForLayer(Layer* layer) {
layer->PushPropertiesTo(
layer->CreateLayerImpl(host_impl_.active_tree()).get());
}
void VerifyTestTreeInitialState() const {
ASSERT_EQ(3U, parent_->children().size());
EXPECT_EQ(child1_, parent_->children()[0]);
EXPECT_EQ(child2_, parent_->children()[1]);
EXPECT_EQ(child3_, parent_->children()[2]);
EXPECT_EQ(parent_.get(), child1_->parent());
EXPECT_EQ(parent_.get(), child2_->parent());
EXPECT_EQ(parent_.get(), child3_->parent());
ASSERT_EQ(2U, child1_->children().size());
EXPECT_EQ(grand_child1_, child1_->children()[0]);
EXPECT_EQ(grand_child2_, child1_->children()[1]);
EXPECT_EQ(child1_.get(), grand_child1_->parent());
EXPECT_EQ(child1_.get(), grand_child2_->parent());
ASSERT_EQ(1U, child2_->children().size());
EXPECT_EQ(grand_child3_, child2_->children()[0]);
EXPECT_EQ(child2_.get(), grand_child3_->parent());
ASSERT_EQ(0U, child3_->children().size());
}
void CreateSimpleTestTree() {
parent_ = Layer::Create();
child1_ = Layer::Create();
child2_ = Layer::Create();
child3_ = Layer::Create();
grand_child1_ = Layer::Create();
grand_child2_ = Layer::Create();
grand_child3_ = Layer::Create();
EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times(AnyNumber());
layer_tree_host_->SetRootLayer(parent_);
parent_->AddChild(child1_);
parent_->AddChild(child2_);
parent_->AddChild(child3_);
child1_->AddChild(grand_child1_);
child1_->AddChild(grand_child2_);
child2_->AddChild(grand_child3_);
Mock::VerifyAndClearExpectations(layer_tree_host_.get());
VerifyTestTreeInitialState();
}
FakeImplTaskRunnerProvider task_runner_provider_;
TestTaskGraphRunner task_graph_runner_;
FakeLayerTreeHostImpl host_impl_;
StubLayerTreeHostSingleThreadClient single_thread_client_;
FakeLayerTreeHostClient fake_client_;
std::unique_ptr<StrictMock<MockLayerTreeHost>> layer_tree_host_;
std::unique_ptr<AnimationHost> animation_host_;
scoped_refptr<Layer> parent_;
scoped_refptr<Layer> child1_;
scoped_refptr<Layer> child2_;
scoped_refptr<Layer> child3_;
scoped_refptr<Layer> grand_child1_;
scoped_refptr<Layer> grand_child2_;
scoped_refptr<Layer> grand_child3_;
scoped_refptr<AnimationTimeline> timeline_impl_;
LayerTreeSettings settings_;
};
class LayerTestWithLayerList : public LayerTest {
void SetUp() override {
settings_.use_layer_lists = true;
LayerTest::SetUp();
}
};
TEST_F(LayerTest, BasicCreateAndDestroy) {
scoped_refptr<Layer> test_layer = Layer::Create();
ASSERT_TRUE(test_layer.get());
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(0);
test_layer->SetLayerTreeHost(layer_tree_host_.get());
Mock::VerifyAndClearExpectations(layer_tree_host_.get());
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(0);
test_layer->SetLayerTreeHost(nullptr);
}
TEST_F(LayerTest, LayerPropertyChangedForSubtree) {
EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times(AtLeast(1));
scoped_refptr<Layer> root = Layer::Create();
scoped_refptr<Layer> top = Layer::Create();
scoped_refptr<Layer> child = Layer::Create();
scoped_refptr<Layer> child2 = Layer::Create();
scoped_refptr<Layer> grand_child = Layer::Create();
FakeContentLayerClient client;
scoped_refptr<PictureLayer> mask_layer1 = PictureLayer::Create(&client);
mask_layer1->SetElementId(LayerIdToElementIdForTesting(mask_layer1->id()));
layer_tree_host_->SetRootLayer(root);
root->AddChild(top);
top->AddChild(child);
top->AddChild(child2);
child->AddChild(grand_child);
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(AtLeast(1));
// To force a transform node for |top|.
gfx::Transform top_transform;
top_transform.Scale3d(1, 2, 3);
top->SetTransform(top_transform);
child->SetForceRenderSurfaceForTesting(true);
// Resizing without a mask layer or masks_to_bounds, should only require a
// regular commit. Note that a layer and its mask should match sizes, but
// the mask isn't in the tree yet, so won't need its own commit.
gfx::Size arbitrary_size = gfx::Size(1, 2);
EXPECT_SET_NEEDS_COMMIT(1, top->SetBounds(arbitrary_size));
EXPECT_SET_NEEDS_COMMIT(0, mask_layer1->SetBounds(arbitrary_size));
EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times(1);
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(AtLeast(1));
EXECUTE_AND_VERIFY_SUBTREE_CHANGED(top->SetMaskLayer(mask_layer1));
// Set up the impl layers after the full tree is constructed, including the
// mask layer.
SkBlendMode arbitrary_blend_mode = SkBlendMode::kMultiply;
std::unique_ptr<LayerImpl> top_impl =
LayerImpl::Create(host_impl_.active_tree(), top->id());
std::unique_ptr<LayerImpl> child_impl =
LayerImpl::Create(host_impl_.active_tree(), child->id());
std::unique_ptr<LayerImpl> child2_impl =
LayerImpl::Create(host_impl_.active_tree(), child2->id());
std::unique_ptr<LayerImpl> grand_child_impl =
LayerImpl::Create(host_impl_.active_tree(), grand_child->id());
std::unique_ptr<LayerImpl> mask_layer1_impl =
mask_layer1->CreateLayerImpl(host_impl_.active_tree());
EXECUTE_AND_VERIFY_SUBTREE_CHANGES_RESET(
top->PushPropertiesTo(top_impl.get());
child->PushPropertiesTo(child_impl.get());
child2->PushPropertiesTo(child2_impl.get());
grand_child->PushPropertiesTo(grand_child_impl.get());
mask_layer1->PushPropertiesTo(mask_layer1_impl.get()););
// Once there is a mask layer, resizes require subtree properties to update.
arbitrary_size = gfx::Size(11, 22);
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(2);
EXECUTE_AND_VERIFY_SUBTREE_CHANGED(top->SetBounds(arbitrary_size));
EXECUTE_AND_VERIFY_SUBTREE_CHANGED(mask_layer1->SetBounds(arbitrary_size));
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(1);
EXECUTE_AND_VERIFY_SUBTREE_CHANGED(top->SetMasksToBounds(true));
EXECUTE_AND_VERIFY_SUBTREE_CHANGES_RESET(
top->PushPropertiesTo(top_impl.get());
child->PushPropertiesTo(child_impl.get());
child2->PushPropertiesTo(child2_impl.get());
grand_child->PushPropertiesTo(grand_child_impl.get()));
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(1);
EXECUTE_AND_VERIFY_SUBTREE_CHANGED(top->SetContentsOpaque(true));
EXECUTE_AND_VERIFY_SUBTREE_CHANGES_RESET(
top->PushPropertiesTo(top_impl.get());
child->PushPropertiesTo(child_impl.get());
child2->PushPropertiesTo(child2_impl.get());
grand_child->PushPropertiesTo(grand_child_impl.get()));
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(1);
EXECUTE_AND_VERIFY_SUBTREE_CHANGED(top->SetTrilinearFiltering(true));
EXECUTE_AND_VERIFY_SUBTREE_CHANGES_RESET(
top->PushPropertiesTo(top_impl.get());
child->PushPropertiesTo(child_impl.get());
child2->PushPropertiesTo(child2_impl.get());
grand_child->PushPropertiesTo(grand_child_impl.get()));
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(1);
EXECUTE_AND_VERIFY_SUBTREE_CHANGED(top->SetTrilinearFiltering(false));
EXECUTE_AND_VERIFY_SUBTREE_CHANGES_RESET(
top->PushPropertiesTo(top_impl.get());
child->PushPropertiesTo(child_impl.get());
child2->PushPropertiesTo(child2_impl.get());
grand_child->PushPropertiesTo(grand_child_impl.get()));
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(2);
top->SetRoundedCorner({1, 2, 3, 4});
EXECUTE_AND_VERIFY_SUBTREE_CHANGED(top->SetIsFastRoundedCorner(true));
EXECUTE_AND_VERIFY_SUBTREE_CHANGES_RESET(
top->PushPropertiesTo(top_impl.get());
child->PushPropertiesTo(child_impl.get());
child2->PushPropertiesTo(child2_impl.get());
grand_child->PushPropertiesTo(grand_child_impl.get()));
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(1);
EXECUTE_AND_VERIFY_SUBTREE_CHANGED(top->SetHideLayerAndSubtree(true));
EXECUTE_AND_VERIFY_SUBTREE_CHANGES_RESET(
top->PushPropertiesTo(top_impl.get());
child->PushPropertiesTo(child_impl.get());
child2->PushPropertiesTo(child2_impl.get());
grand_child->PushPropertiesTo(grand_child_impl.get()));
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(1);
EXECUTE_AND_VERIFY_SUBTREE_CHANGED(top->SetBlendMode(arbitrary_blend_mode));
EXECUTE_AND_VERIFY_SUBTREE_CHANGES_RESET(
top->PushPropertiesTo(top_impl.get());
child->PushPropertiesTo(child_impl.get());
child2->PushPropertiesTo(child2_impl.get());
grand_child->PushPropertiesTo(grand_child_impl.get()));
// Should be a different size than previous call, to ensure it marks tree
// changed.
arbitrary_size = gfx::Size(111, 222);
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(2);
EXECUTE_AND_VERIFY_SUBTREE_CHANGED(top->SetBounds(arbitrary_size));
EXECUTE_AND_VERIFY_SUBTREE_CHANGED(mask_layer1->SetBounds(arbitrary_size));
EXECUTE_AND_VERIFY_SUBTREE_CHANGES_RESET(
top->PushPropertiesTo(top_impl.get());
child->PushPropertiesTo(child_impl.get());
child2->PushPropertiesTo(child2_impl.get());
grand_child->PushPropertiesTo(grand_child_impl.get()));
FilterOperations arbitrary_filters;
arbitrary_filters.Append(FilterOperation::CreateOpacityFilter(0.5f));
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(1);
EXECUTE_AND_VERIFY_SUBTREE_CHANGED(top->SetFilters(arbitrary_filters));
EXECUTE_AND_VERIFY_SUBTREE_CHANGES_RESET(
top->PushPropertiesTo(top_impl.get());
child->PushPropertiesTo(child_impl.get());
child2->PushPropertiesTo(child2_impl.get());
grand_child->PushPropertiesTo(grand_child_impl.get()));
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(2);
EXECUTE_AND_VERIFY_SUBTREE_CHANGED(
top->SetBackdropFilters(arbitrary_filters));
EXECUTE_AND_VERIFY_SUBTREE_CHANGES_RESET(
top->PushPropertiesTo(top_impl.get());
child->PushPropertiesTo(child_impl.get());
child2->PushPropertiesTo(child2_impl.get());
grand_child->PushPropertiesTo(grand_child_impl.get()));
gfx::PointF arbitrary_point_f = gfx::PointF(0.125f, 0.25f);
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(1);
top->SetPosition(arbitrary_point_f);
TransformNode* node = layer_tree_host_->property_trees()->transform_tree.Node(
top->transform_tree_index());
EXPECT_TRUE(node->transform_changed);
EXECUTE_AND_VERIFY_SUBTREE_CHANGES_RESET(
top->PushPropertiesTo(top_impl.get());
child->PushPropertiesTo(child_impl.get());
child2->PushPropertiesTo(child2_impl.get());
grand_child->PushPropertiesTo(grand_child_impl.get());
layer_tree_host_->property_trees()->ResetAllChangeTracking());
EXPECT_FALSE(node->transform_changed);
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(1);
child->SetPosition(arbitrary_point_f);
node = layer_tree_host_->property_trees()->transform_tree.Node(
child->transform_tree_index());
EXPECT_TRUE(node->transform_changed);
EXECUTE_AND_VERIFY_SUBTREE_CHANGES_RESET(
child->PushPropertiesTo(child_impl.get());
grand_child->PushPropertiesTo(grand_child_impl.get());
layer_tree_host_->property_trees()->ResetAllChangeTracking());
node = layer_tree_host_->property_trees()->transform_tree.Node(
child->transform_tree_index());
EXPECT_FALSE(node->transform_changed);
gfx::Point3F arbitrary_point_3f = gfx::Point3F(0.125f, 0.25f, 0.f);
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(1);
top->SetTransformOrigin(arbitrary_point_3f);
node = layer_tree_host_->property_trees()->transform_tree.Node(
top->transform_tree_index());
EXPECT_TRUE(node->transform_changed);
EXECUTE_AND_VERIFY_SUBTREE_CHANGES_RESET(
top->PushPropertiesTo(top_impl.get());
child->PushPropertiesTo(child_impl.get());
child2->PushPropertiesTo(child2_impl.get());
grand_child->PushPropertiesTo(grand_child_impl.get());
layer_tree_host_->property_trees()->ResetAllChangeTracking());
gfx::Transform arbitrary_transform;
arbitrary_transform.Scale3d(0.1f, 0.2f, 0.3f);
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(1);
top->SetTransform(arbitrary_transform);
node = layer_tree_host_->property_trees()->transform_tree.Node(
top->transform_tree_index());
EXPECT_TRUE(node->transform_changed);
}
TEST_F(LayerTest, AddAndRemoveChild) {
scoped_refptr<Layer> parent = Layer::Create();
scoped_refptr<Layer> child = Layer::Create();
// Upon creation, layers should not have children or parent.
ASSERT_EQ(0U, parent->children().size());
EXPECT_FALSE(child->parent());
EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, layer_tree_host_->SetRootLayer(parent));
EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->AddChild(child));
ASSERT_EQ(1U, parent->children().size());
EXPECT_EQ(child.get(), parent->children()[0]);
EXPECT_EQ(parent.get(), child->parent());
EXPECT_EQ(parent.get(), child->RootLayer());
EXPECT_SET_NEEDS_FULL_TREE_SYNC(AtLeast(1), child->RemoveFromParent());
}
TEST_F(LayerTest, SetMaskLayer) {
scoped_refptr<Layer> parent = Layer::Create();
FakeContentLayerClient client;
scoped_refptr<PictureLayer> mask = PictureLayer::Create(&client);
mask->SetPosition(gfx::PointF(88, 99));
parent->SetMaskLayer(mask);
ASSERT_EQ(1u, parent->children().size());
EXPECT_EQ(parent.get(), mask->parent());
EXPECT_EQ(mask.get(), parent->children()[0]);
EXPECT_TRUE(parent->mask_layer());
// Should ignore mask layer's position.
EXPECT_TRUE(mask->position().IsOrigin());
mask->SetPosition(gfx::PointF(11, 22));
EXPECT_TRUE(mask->position().IsOrigin());
parent->SetMaskLayer(mask);
ASSERT_EQ(1u, parent->children().size());
EXPECT_EQ(parent.get(), mask->parent());
EXPECT_EQ(mask.get(), parent->children()[0]);
EXPECT_TRUE(parent->mask_layer());
scoped_refptr<PictureLayer> mask2 = PictureLayer::Create(&client);
parent->SetMaskLayer(mask2);
EXPECT_FALSE(mask->parent());
ASSERT_EQ(1u, parent->children().size());
EXPECT_EQ(parent.get(), mask2->parent());
EXPECT_EQ(mask2.get(), parent->children()[0]);
EXPECT_TRUE(parent->mask_layer());
parent->SetMaskLayer(nullptr);
EXPECT_EQ(0u, parent->children().size());
EXPECT_FALSE(mask2->parent());
EXPECT_FALSE(parent->mask_layer());
}
TEST_F(LayerTest, RemoveMaskLayerFromParent) {
scoped_refptr<Layer> parent = Layer::Create();
FakeContentLayerClient client;
scoped_refptr<PictureLayer> mask = PictureLayer::Create(&client);
parent->SetMaskLayer(mask);
mask->RemoveFromParent();
EXPECT_EQ(0u, parent->children().size());
EXPECT_FALSE(mask->parent());
EXPECT_FALSE(parent->mask_layer());
scoped_refptr<PictureLayer> mask2 = PictureLayer::Create(&client);
parent->SetMaskLayer(mask2);
EXPECT_TRUE(parent->mask_layer());
}
TEST_F(LayerTest, AddChildAfterSetMaskLayer) {
scoped_refptr<Layer> parent = Layer::Create();
FakeContentLayerClient client;
scoped_refptr<PictureLayer> mask = PictureLayer::Create(&client);
parent->SetMaskLayer(mask);
EXPECT_TRUE(parent->mask_layer());
parent->AddChild(Layer::Create());
EXPECT_EQ(mask.get(), parent->children().back().get());
EXPECT_TRUE(parent->mask_layer());
parent->InsertChild(Layer::Create(), parent->children().size());
EXPECT_EQ(mask.get(), parent->children().back().get());
EXPECT_TRUE(parent->mask_layer());
}
TEST_F(LayerTest, AddSameChildTwice) {
EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times(AtLeast(1));
scoped_refptr<Layer> parent = Layer::Create();
scoped_refptr<Layer> child = Layer::Create();
layer_tree_host_->SetRootLayer(parent);
ASSERT_EQ(0u, parent->children().size());
parent->AddChild(child);
ASSERT_EQ(1u, parent->children().size());
EXPECT_EQ(parent.get(), child->parent());
parent->AddChild(child);
ASSERT_EQ(1u, parent->children().size());
EXPECT_EQ(parent.get(), child->parent());
}
TEST_F(LayerTest, ReorderChildren) {
EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times(AtLeast(1));
scoped_refptr<Layer> parent = Layer::Create();
scoped_refptr<Layer> child1 = Layer::Create();
scoped_refptr<Layer> child2 = Layer::Create();
scoped_refptr<Layer> child3 = Layer::Create();
layer_tree_host_->SetRootLayer(parent);
parent->AddChild(child1);
parent->AddChild(child2);
parent->AddChild(child3);
EXPECT_EQ(child1, parent->children()[0]);
EXPECT_EQ(child2, parent->children()[1]);
EXPECT_EQ(child3, parent->children()[2]);
layer_tree_host_->ClearLayersThatShouldPushProperties();
LayerList new_children_order;
new_children_order.emplace_back(child3);
new_children_order.emplace_back(child1);
new_children_order.emplace_back(child2);
parent->ReorderChildren(&new_children_order);
EXPECT_EQ(child3, parent->children()[0]);
EXPECT_EQ(child1, parent->children()[1]);
EXPECT_EQ(child2, parent->children()[2]);
for (const auto& child : parent->children()) {
EXPECT_FALSE(base::Contains(
layer_tree_host_->LayersThatShouldPushProperties(), child.get()));
EXPECT_TRUE(child->subtree_property_changed());
}
}
TEST_F(LayerTest, InsertChild) {
scoped_refptr<Layer> parent = Layer::Create();
scoped_refptr<Layer> child1 = Layer::Create();
scoped_refptr<Layer> child2 = Layer::Create();
scoped_refptr<Layer> child3 = Layer::Create();
scoped_refptr<Layer> child4 = Layer::Create();
EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, layer_tree_host_->SetRootLayer(parent));
ASSERT_EQ(0U, parent->children().size());
// Case 1: inserting to empty list.
EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->InsertChild(child3, 0));
ASSERT_EQ(1U, parent->children().size());
EXPECT_EQ(child3, parent->children()[0]);
EXPECT_EQ(parent.get(), child3->parent());
// Case 2: inserting to beginning of list
EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->InsertChild(child1, 0));
ASSERT_EQ(2U, parent->children().size());
EXPECT_EQ(child1, parent->children()[0]);
EXPECT_EQ(child3, parent->children()[1]);
EXPECT_EQ(parent.get(), child1->parent());
// Case 3: inserting to middle of list
EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->InsertChild(child2, 1));
ASSERT_EQ(3U, parent->children().size());
EXPECT_EQ(child1, parent->children()[0]);
EXPECT_EQ(child2, parent->children()[1]);
EXPECT_EQ(child3, parent->children()[2]);
EXPECT_EQ(parent.get(), child2->parent());
// Case 4: inserting to end of list
EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->InsertChild(child4, 3));
ASSERT_EQ(4U, parent->children().size());
EXPECT_EQ(child1, parent->children()[0]);
EXPECT_EQ(child2, parent->children()[1]);
EXPECT_EQ(child3, parent->children()[2]);
EXPECT_EQ(child4, parent->children()[3]);
EXPECT_EQ(parent.get(), child4->parent());
EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, layer_tree_host_->SetRootLayer(nullptr));
}
TEST_F(LayerTest, InsertChildPastEndOfList) {
scoped_refptr<Layer> parent = Layer::Create();
scoped_refptr<Layer> child1 = Layer::Create();
scoped_refptr<Layer> child2 = Layer::Create();
ASSERT_EQ(0U, parent->children().size());
// insert to an out-of-bounds index
parent->InsertChild(child1, 53);
ASSERT_EQ(1U, parent->children().size());
EXPECT_EQ(child1, parent->children()[0]);
// insert another child to out-of-bounds, when list is not already empty.
parent->InsertChild(child2, 2459);
ASSERT_EQ(2U, parent->children().size());
EXPECT_EQ(child1, parent->children()[0]);
EXPECT_EQ(child2, parent->children()[1]);
}
TEST_F(LayerTest, InsertSameChildTwice) {
scoped_refptr<Layer> parent = Layer::Create();
scoped_refptr<Layer> child1 = Layer::Create();
scoped_refptr<Layer> child2 = Layer::Create();
EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, layer_tree_host_->SetRootLayer(parent));
ASSERT_EQ(0U, parent->children().size());
EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->InsertChild(child1, 0));
EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->InsertChild(child2, 1));
ASSERT_EQ(2U, parent->children().size());
EXPECT_EQ(child1, parent->children()[0]);
EXPECT_EQ(child2, parent->children()[1]);
// Inserting the same child again should cause the child to be removed and
// re-inserted at the new location.
EXPECT_SET_NEEDS_FULL_TREE_SYNC(AtLeast(1), parent->InsertChild(child1, 1));
// child1 should now be at the end of the list.
ASSERT_EQ(2U, parent->children().size());
EXPECT_EQ(child2, parent->children()[0]);
EXPECT_EQ(child1, parent->children()[1]);
EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, layer_tree_host_->SetRootLayer(nullptr));
}
TEST_F(LayerTest, ReplaceChildWithNewChild) {
CreateSimpleTestTree();
scoped_refptr<Layer> child4 = Layer::Create();
EXPECT_FALSE(child4->parent());
EXPECT_SET_NEEDS_FULL_TREE_SYNC(
AtLeast(1), parent_->ReplaceChild(child2_.get(), child4));
EXPECT_FALSE(LayerNeedsDisplay(parent_.get()));
EXPECT_FALSE(LayerNeedsDisplay(child1_.get()));
EXPECT_FALSE(LayerNeedsDisplay(child2_.get()));
EXPECT_FALSE(LayerNeedsDisplay(child3_.get()));
EXPECT_FALSE(LayerNeedsDisplay(child4.get()));
ASSERT_EQ(static_cast<size_t>(3), parent_->children().size());
EXPECT_EQ(child1_, parent_->children()[0]);
EXPECT_EQ(child4, parent_->children()[1]);
EXPECT_EQ(child3_, parent_->children()[2]);
EXPECT_EQ(parent_.get(), child4->parent());
EXPECT_FALSE(child2_->parent());
}
TEST_F(LayerTest, ReplaceChildWithNewChildThatHasOtherParent) {
CreateSimpleTestTree();
// create another simple tree with test_layer and child4.
scoped_refptr<Layer> test_layer = Layer::Create();
scoped_refptr<Layer> child4 = Layer::Create();
test_layer->AddChild(child4);
ASSERT_EQ(1U, test_layer->children().size());
EXPECT_EQ(child4, test_layer->children()[0]);
EXPECT_EQ(test_layer.get(), child4->parent());
EXPECT_SET_NEEDS_FULL_TREE_SYNC(
AtLeast(1), parent_->ReplaceChild(child2_.get(), child4));
ASSERT_EQ(3U, parent_->children().size());
EXPECT_EQ(child1_, parent_->children()[0]);
EXPECT_EQ(child4, parent_->children()[1]);
EXPECT_EQ(child3_, parent_->children()[2]);
EXPECT_EQ(parent_.get(), child4->parent());
// test_layer should no longer have child4,
// and child2 should no longer have a parent.
ASSERT_EQ(0U, test_layer->children().size());
EXPECT_FALSE(child2_->parent());
}
TEST_F(LayerTest, ReplaceChildWithSameChild) {
CreateSimpleTestTree();
// SetNeedsFullTreeSync / SetNeedsCommit should not be called because its the
// same child.
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(0);
EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times(0);
parent_->ReplaceChild(child2_.get(), child2_);
VerifyTestTreeInitialState();
}
TEST_F(LayerTest, RemoveAllChildren) {
CreateSimpleTestTree();
EXPECT_SET_NEEDS_FULL_TREE_SYNC(AtLeast(3), parent_->RemoveAllChildren());
ASSERT_EQ(0U, parent_->children().size());
EXPECT_FALSE(child1_->parent());
EXPECT_FALSE(child2_->parent());
EXPECT_FALSE(child3_->parent());
}
TEST_F(LayerTest, HasAncestor) {
scoped_refptr<Layer> parent = Layer::Create();
EXPECT_FALSE(parent->HasAncestor(parent.get()));
scoped_refptr<Layer> child = Layer::Create();
parent->AddChild(child);
EXPECT_FALSE(child->HasAncestor(child.get()));
EXPECT_TRUE(child->HasAncestor(parent.get()));
EXPECT_FALSE(parent->HasAncestor(child.get()));
scoped_refptr<Layer> child_child = Layer::Create();
child->AddChild(child_child);
EXPECT_FALSE(child_child->HasAncestor(child_child.get()));
EXPECT_TRUE(child_child->HasAncestor(parent.get()));
EXPECT_TRUE(child_child->HasAncestor(child.get()));
EXPECT_FALSE(parent->HasAncestor(child.get()));
EXPECT_FALSE(parent->HasAncestor(child_child.get()));
}
TEST_F(LayerTest, GetRootLayerAfterTreeManipulations) {
CreateSimpleTestTree();
// For this test we don't care about SetNeedsFullTreeSync calls.
EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times(AnyNumber());
scoped_refptr<Layer> child4 = Layer::Create();
EXPECT_EQ(parent_.get(), parent_->RootLayer());
EXPECT_EQ(parent_.get(), child1_->RootLayer());
EXPECT_EQ(parent_.get(), child2_->RootLayer());
EXPECT_EQ(parent_.get(), child3_->RootLayer());
EXPECT_EQ(child4.get(), child4->RootLayer());
EXPECT_EQ(parent_.get(), grand_child1_->RootLayer());
EXPECT_EQ(parent_.get(), grand_child2_->RootLayer());
EXPECT_EQ(parent_.get(), grand_child3_->RootLayer());
child1_->RemoveFromParent();
// |child1| and its children, grand_child1 and grand_child2 are now on a
// separate subtree.
EXPECT_EQ(parent_.get(), parent_->RootLayer());
EXPECT_EQ(child1_.get(), child1_->RootLayer());
EXPECT_EQ(parent_.get(), child2_->RootLayer());
EXPECT_EQ(parent_.get(), child3_->RootLayer());
EXPECT_EQ(child4.get(), child4->RootLayer());
EXPECT_EQ(child1_.get(), grand_child1_->RootLayer());
EXPECT_EQ(child1_.get(), grand_child2_->RootLayer());
EXPECT_EQ(parent_.get(), grand_child3_->RootLayer());
grand_child3_->AddChild(child4);
EXPECT_EQ(parent_.get(), parent_->RootLayer());
EXPECT_EQ(child1_.get(), child1_->RootLayer());
EXPECT_EQ(parent_.get(), child2_->RootLayer());
EXPECT_EQ(parent_.get(), child3_->RootLayer());
EXPECT_EQ(parent_.get(), child4->RootLayer());
EXPECT_EQ(child1_.get(), grand_child1_->RootLayer());
EXPECT_EQ(child1_.get(), grand_child2_->RootLayer());
EXPECT_EQ(parent_.get(), grand_child3_->RootLayer());
child2_->ReplaceChild(grand_child3_.get(), child1_);
// |grand_child3| gets orphaned and the child1 subtree gets planted back into
// the tree under child2.
EXPECT_EQ(parent_.get(), parent_->RootLayer());
EXPECT_EQ(parent_.get(), child1_->RootLayer());
EXPECT_EQ(parent_.get(), child2_->RootLayer());
EXPECT_EQ(parent_.get(), child3_->RootLayer());
EXPECT_EQ(grand_child3_.get(), child4->RootLayer());
EXPECT_EQ(parent_.get(), grand_child1_->RootLayer());
EXPECT_EQ(parent_.get(), grand_child2_->RootLayer());
EXPECT_EQ(grand_child3_.get(), grand_child3_->RootLayer());
}
TEST_F(LayerTest, CheckSetNeedsDisplayCausesCorrectBehavior) {
// The semantics for SetNeedsDisplay which are tested here:
// 1. sets NeedsDisplay flag appropriately.
// 2. indirectly calls SetNeedsUpdate, exactly once for each call to
// SetNeedsDisplay.
scoped_refptr<Layer> test_layer = Layer::Create();
EXPECT_SET_NEEDS_FULL_TREE_SYNC(1,
layer_tree_host_->SetRootLayer(test_layer));
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetIsDrawable(true));
gfx::Size test_bounds = gfx::Size(501, 508);
gfx::Rect dirty_rect = gfx::Rect(10, 15, 1, 2);
gfx::Rect out_of_bounds_dirty_rect = gfx::Rect(400, 405, 500, 502);
// Before anything, test_layer should not be dirty.
EXPECT_FALSE(LayerNeedsDisplay(test_layer.get()));
// This is just initialization, but SetNeedsCommit behavior is verified anyway
// to avoid warnings.
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetBounds(test_bounds));
EXPECT_FALSE(LayerNeedsDisplay(test_layer.get()));
// The real test begins here.
SimulateCommitForLayer(test_layer.get());
EXPECT_FALSE(LayerNeedsDisplay(test_layer.get()));
// Case 1: Layer should accept dirty rects that go beyond its bounds.
EXPECT_FALSE(LayerNeedsDisplay(test_layer.get()));
EXPECT_SET_NEEDS_UPDATE(
1, test_layer->SetNeedsDisplayRect(out_of_bounds_dirty_rect));
EXPECT_TRUE(LayerNeedsDisplay(test_layer.get()));
SimulateCommitForLayer(test_layer.get());
// Case 2: SetNeedsDisplay() without the dirty rect arg.
EXPECT_FALSE(LayerNeedsDisplay(test_layer.get()));
EXPECT_SET_NEEDS_UPDATE(1, test_layer->SetNeedsDisplay());
EXPECT_TRUE(LayerNeedsDisplay(test_layer.get()));
SimulateCommitForLayer(test_layer.get());
// Case 3: SetNeedsDisplay() with an empty rect.
EXPECT_FALSE(LayerNeedsDisplay(test_layer.get()));
EXPECT_SET_NEEDS_COMMIT(0, test_layer->SetNeedsDisplayRect(gfx::Rect()));
EXPECT_FALSE(LayerNeedsDisplay(test_layer.get()));
SimulateCommitForLayer(test_layer.get());
// Case 4: SetNeedsDisplay() with a non-drawable layer
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetIsDrawable(false));
SimulateCommitForLayer(test_layer.get());
EXPECT_FALSE(LayerNeedsDisplay(test_layer.get()));
EXPECT_SET_NEEDS_UPDATE(0, test_layer->SetNeedsDisplayRect(dirty_rect));
EXPECT_TRUE(LayerNeedsDisplay(test_layer.get()));
}
TEST_F(LayerTest, CheckPropertyChangeCausesCorrectBehavior) {
scoped_refptr<Layer> test_layer = Layer::Create();
EXPECT_SET_NEEDS_FULL_TREE_SYNC(1,
layer_tree_host_->SetRootLayer(test_layer));
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetIsDrawable(true));
FakeContentLayerClient client;
scoped_refptr<PictureLayer> mask_layer1 = PictureLayer::Create(&client);
// sanity check of initial test condition
EXPECT_FALSE(LayerNeedsDisplay(test_layer.get()));
// Next, test properties that should call SetNeedsCommit (but not
// SetNeedsDisplay). All properties need to be set to new values in order for
// SetNeedsCommit to be called.
EXPECT_SET_NEEDS_COMMIT(
1, test_layer->SetTransformOrigin(gfx::Point3F(1.23f, 4.56f, 0.f)));
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetBackgroundColor(SK_ColorLTGRAY));
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetMasksToBounds(true));
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetClipRect(gfx::Rect(1, 2, 3, 4)));
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetRoundedCorner({1, 2, 3, 4}));
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetIsFastRoundedCorner(true));
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetOpacity(0.5f));
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetBlendMode(SkBlendMode::kHue));
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetContentsOpaque(true));
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetPosition(gfx::PointF(4.f, 9.f)));
// We can use any layer pointer here since we aren't syncing for real.
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetScrollable(gfx::Size(1, 1)));
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetUserScrollable(true, false));
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetScrollOffset(
gfx::ScrollOffset(10, 10)));
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetNonFastScrollableRegion(
Region(gfx::Rect(1, 1, 2, 2))));
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetTransform(
gfx::Transform(0.0, 0.0, 0.0, 0.0, 0.0, 0.0)));
TouchActionRegion touch_action_region;
touch_action_region.Union(TouchAction::kNone, gfx::Rect(10, 10));
EXPECT_SET_NEEDS_COMMIT(
1, test_layer->SetTouchActionRegion(std::move(touch_action_region)));
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetForceRenderSurfaceForTesting(true));
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetHideLayerAndSubtree(true));
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetElementId(ElementId(2)));
EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(1);
EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, test_layer->SetMaskLayer(mask_layer1));
// The above tests should not have caused a change to the needs_display flag.
EXPECT_FALSE(LayerNeedsDisplay(test_layer.get()));
// As layers are removed from the tree, they will cause a tree sync.
EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times((AnyNumber()));
}
TEST_F(LayerTest, PushPropertiesAccumulatesUpdateRect) {
scoped_refptr<Layer> test_layer = Layer::Create();
std::unique_ptr<LayerImpl> impl_layer =
LayerImpl::Create(host_impl_.active_tree(), 1);
EXPECT_SET_NEEDS_FULL_TREE_SYNC(1,
layer_tree_host_->SetRootLayer(test_layer));
host_impl_.active_tree()->SetRootLayerForTesting(std::move(impl_layer));
LayerImpl* impl_layer_ptr = host_impl_.active_tree()->LayerById(1);
test_layer->SetNeedsDisplayRect(gfx::Rect(5, 5));
test_layer->PushPropertiesTo(impl_layer_ptr);
EXPECT_FLOAT_RECT_EQ(gfx::RectF(0.f, 0.f, 5.f, 5.f),
impl_layer_ptr->update_rect());
// The LayerImpl's update_rect() should be accumulated here, since we did not
// do anything to clear it.
test_layer->SetNeedsDisplayRect(gfx::Rect(10, 10, 5, 5));
test_layer->PushPropertiesTo(impl_layer_ptr);
EXPECT_FLOAT_RECT_EQ(gfx::RectF(0.f, 0.f, 15.f, 15.f),
impl_layer_ptr->update_rect());
// If we do clear the LayerImpl side, then the next update_rect() should be
// fresh without accumulation.
host_impl_.active_tree()->ResetAllChangeTracking();
test_layer->SetNeedsDisplayRect(gfx::Rect(10, 10, 5, 5));
test_layer->PushPropertiesTo(impl_layer_ptr);
EXPECT_FLOAT_RECT_EQ(gfx::RectF(10.f, 10.f, 5.f, 5.f),
impl_layer_ptr->update_rect());
}
TEST_F(LayerTest, PushPropertiesCausesLayerPropertyChangedForTransform) {
scoped_refptr<Layer> test_layer = Layer::Create();
std::unique_ptr<LayerImpl> impl_layer =
LayerImpl::Create(host_impl_.active_tree(), 1);
EXPECT_SET_NEEDS_FULL_TREE_SYNC(1,
layer_tree_host_->SetRootLayer(test_layer));
gfx::Transform transform;
transform.Rotate(45.0);
EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetTransform(transform));
EXPECT_FALSE(impl_layer->LayerPropertyChanged());
test_layer->PushPropertiesTo(impl_layer.get());