blob: 741de6bda1c63b809cc9898fe9253d64b96f4590 [file] [log] [blame]
// 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/trees/tree_synchronizer.h"
#include <algorithm>
#include <set>
#include <vector>
#include "base/format_macros.h"
#include "base/strings/stringprintf.h"
#include "cc/animation/layer_animation_controller.h"
#include "cc/layers/layer.h"
#include "cc/layers/layer_impl.h"
#include "cc/test/animation_test_common.h"
#include "cc/test/fake_impl_task_runner_provider.h"
#include "cc/test/fake_layer_tree_host.h"
#include "cc/test/fake_rendering_stats_instrumentation.h"
#include "cc/test/test_shared_bitmap_manager.h"
#include "cc/test/test_task_graph_runner.h"
#include "cc/trees/single_thread_proxy.h"
#include "cc/trees/task_runner_provider.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace cc {
namespace {
class MockLayerImpl : public LayerImpl {
public:
static scoped_ptr<MockLayerImpl> Create(LayerTreeImpl* tree_impl,
int layer_id) {
return make_scoped_ptr(new MockLayerImpl(tree_impl, layer_id));
}
~MockLayerImpl() override {
if (layer_impl_destruction_list_)
layer_impl_destruction_list_->push_back(id());
}
void SetLayerImplDestructionList(std::vector<int>* list) {
layer_impl_destruction_list_ = list;
}
private:
MockLayerImpl(LayerTreeImpl* tree_impl, int layer_id)
: LayerImpl(tree_impl, layer_id),
layer_impl_destruction_list_(NULL) {}
std::vector<int>* layer_impl_destruction_list_;
};
class MockLayer : public Layer {
public:
static scoped_refptr<MockLayer> Create(
const LayerSettings& settings,
std::vector<int>* layer_impl_destruction_list) {
return make_scoped_refptr(
new MockLayer(settings, layer_impl_destruction_list));
}
scoped_ptr<LayerImpl> CreateLayerImpl(LayerTreeImpl* tree_impl) override {
return MockLayerImpl::Create(tree_impl, layer_id_);
}
void PushPropertiesTo(LayerImpl* layer_impl) override {
Layer::PushPropertiesTo(layer_impl);
MockLayerImpl* mock_layer_impl = static_cast<MockLayerImpl*>(layer_impl);
mock_layer_impl->SetLayerImplDestructionList(layer_impl_destruction_list_);
}
private:
explicit MockLayer(const LayerSettings& settings,
std::vector<int>* layer_impl_destruction_list)
: Layer(settings),
layer_impl_destruction_list_(layer_impl_destruction_list) {}
~MockLayer() override {}
std::vector<int>* layer_impl_destruction_list_;
};
class FakeLayerAnimationController : public LayerAnimationController {
public:
static scoped_refptr<LayerAnimationController> Create() {
return static_cast<LayerAnimationController*>(
new FakeLayerAnimationController);
}
bool SynchronizedAnimations() const { return synchronized_animations_; }
private:
FakeLayerAnimationController()
: LayerAnimationController(1),
synchronized_animations_(false) {}
~FakeLayerAnimationController() override {}
void PushAnimationUpdatesTo(
LayerAnimationController* controller_impl) override {
LayerAnimationController::PushAnimationUpdatesTo(controller_impl);
synchronized_animations_ = true;
}
bool synchronized_animations_;
};
void ExpectTreesAreIdentical(Layer* layer,
LayerImpl* layer_impl,
LayerTreeImpl* tree_impl) {
ASSERT_TRUE(layer);
ASSERT_TRUE(layer_impl);
EXPECT_EQ(layer->id(), layer_impl->id());
EXPECT_EQ(layer_impl->layer_tree_impl(), tree_impl);
EXPECT_EQ(layer->non_fast_scrollable_region(),
layer_impl->non_fast_scrollable_region());
ASSERT_EQ(!!layer->mask_layer(), !!layer_impl->mask_layer());
if (layer->mask_layer()) {
SCOPED_TRACE("mask_layer");
ExpectTreesAreIdentical(
layer->mask_layer(), layer_impl->mask_layer(), tree_impl);
}
ASSERT_EQ(!!layer->replica_layer(), !!layer_impl->replica_layer());
if (layer->replica_layer()) {
SCOPED_TRACE("replica_layer");
ExpectTreesAreIdentical(
layer->replica_layer(), layer_impl->replica_layer(), tree_impl);
}
const LayerList& layer_children = layer->children();
const OwnedLayerImplList& layer_impl_children = layer_impl->children();
ASSERT_EQ(layer_children.size(), layer_impl_children.size());
const std::set<Layer*>* layer_scroll_children = layer->scroll_children();
const std::set<LayerImpl*>* layer_impl_scroll_children =
layer_impl->scroll_children();
ASSERT_EQ(!!layer_scroll_children, !!layer_impl_scroll_children);
if (layer_scroll_children) {
ASSERT_EQ(
layer_scroll_children->size(),
layer_impl_scroll_children->size());
}
const Layer* layer_scroll_parent = layer->scroll_parent();
const LayerImpl* layer_impl_scroll_parent = layer_impl->scroll_parent();
ASSERT_EQ(!!layer_scroll_parent, !!layer_impl_scroll_parent);
if (layer_scroll_parent) {
ASSERT_EQ(layer_scroll_parent->id(), layer_impl_scroll_parent->id());
ASSERT_TRUE(layer_scroll_parent->scroll_children()->find(layer) !=
layer_scroll_parent->scroll_children()->end());
ASSERT_TRUE(layer_impl_scroll_parent->scroll_children()->find(layer_impl) !=
layer_impl_scroll_parent->scroll_children()->end());
}
const std::set<Layer*>* layer_clip_children = layer->clip_children();
const std::set<LayerImpl*>* layer_impl_clip_children =
layer_impl->clip_children();
ASSERT_EQ(!!layer_clip_children, !!layer_impl_clip_children);
if (layer_clip_children)
ASSERT_EQ(layer_clip_children->size(), layer_impl_clip_children->size());
const Layer* layer_clip_parent = layer->clip_parent();
const LayerImpl* layer_impl_clip_parent = layer_impl->clip_parent();
ASSERT_EQ(!!layer_clip_parent, !!layer_impl_clip_parent);
if (layer_clip_parent) {
const std::set<LayerImpl*>* clip_children_impl =
layer_impl_clip_parent->clip_children();
const std::set<Layer*>* clip_children =
layer_clip_parent->clip_children();
ASSERT_EQ(layer_clip_parent->id(), layer_impl_clip_parent->id());
ASSERT_TRUE(clip_children->find(layer) != clip_children->end());
ASSERT_TRUE(clip_children_impl->find(layer_impl) !=
clip_children_impl->end());
}
for (size_t i = 0; i < layer_children.size(); ++i) {
SCOPED_TRACE(base::StringPrintf("child layer %" PRIuS, i).c_str());
ExpectTreesAreIdentical(
layer_children[i].get(), layer_impl_children[i], tree_impl);
}
}
class TreeSynchronizerTest : public testing::Test {
public:
TreeSynchronizerTest()
: client_(FakeLayerTreeHostClient::DIRECT_3D),
host_(FakeLayerTreeHost::Create(&client_, &task_graph_runner_)) {}
protected:
FakeLayerTreeHostClient client_;
TestTaskGraphRunner task_graph_runner_;
scoped_ptr<FakeLayerTreeHost> host_;
LayerSettings layer_settings_;
};
// Attempts to synchronizes a null tree. This should not crash, and should
// return a null tree.
TEST_F(TreeSynchronizerTest, SyncNullTree) {
scoped_ptr<LayerImpl> layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(
static_cast<Layer*>(NULL), nullptr, host_->active_tree());
EXPECT_TRUE(!layer_impl_tree_root.get());
}
// Constructs a very simple tree and synchronizes it without trying to reuse any
// preexisting layers.
TEST_F(TreeSynchronizerTest, SyncSimpleTreeFromEmpty) {
scoped_refptr<Layer> layer_tree_root = Layer::Create(layer_settings_);
layer_tree_root->AddChild(Layer::Create(layer_settings_));
layer_tree_root->AddChild(Layer::Create(layer_settings_));
host_->SetRootLayer(layer_tree_root);
scoped_ptr<LayerImpl> layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(
layer_tree_root.get(), nullptr, host_->active_tree());
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_->active_tree());
}
// Constructs a very simple tree and synchronizes it attempting to reuse some
// layers
TEST_F(TreeSynchronizerTest, SyncSimpleTreeReusingLayers) {
std::vector<int> layer_impl_destruction_list;
scoped_refptr<Layer> layer_tree_root =
MockLayer::Create(layer_settings_, &layer_impl_destruction_list);
layer_tree_root->AddChild(
MockLayer::Create(layer_settings_, &layer_impl_destruction_list));
layer_tree_root->AddChild(
MockLayer::Create(layer_settings_, &layer_impl_destruction_list));
host_->SetRootLayer(layer_tree_root);
scoped_ptr<LayerImpl> layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(
layer_tree_root.get(), nullptr, host_->active_tree());
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_->active_tree());
// We have to push properties to pick up the destruction list pointer.
TreeSynchronizer::PushProperties(layer_tree_root.get(),
layer_impl_tree_root.get());
// Add a new layer to the Layer side
layer_tree_root->children()[0]->AddChild(
MockLayer::Create(layer_settings_, &layer_impl_destruction_list));
// Remove one.
layer_tree_root->children()[1]->RemoveFromParent();
int second_layer_impl_id = layer_impl_tree_root->children()[1]->id();
// Synchronize again. After the sync the trees should be equivalent and we
// should have created and destroyed one LayerImpl.
layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
layer_impl_tree_root.Pass(),
host_->active_tree());
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_->active_tree());
ASSERT_EQ(1u, layer_impl_destruction_list.size());
EXPECT_EQ(second_layer_impl_id, layer_impl_destruction_list[0]);
}
// Constructs a very simple tree and checks that a stacking-order change is
// tracked properly.
TEST_F(TreeSynchronizerTest, SyncSimpleTreeAndTrackStackingOrderChange) {
std::vector<int> layer_impl_destruction_list;
// Set up the tree and sync once. child2 needs to be synced here, too, even
// though we remove it to set up the intended scenario.
scoped_refptr<Layer> layer_tree_root =
MockLayer::Create(layer_settings_, &layer_impl_destruction_list);
scoped_refptr<Layer> child2 =
MockLayer::Create(layer_settings_, &layer_impl_destruction_list);
layer_tree_root->AddChild(
MockLayer::Create(layer_settings_, &layer_impl_destruction_list));
layer_tree_root->AddChild(child2);
host_->SetRootLayer(layer_tree_root);
scoped_ptr<LayerImpl> layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(
layer_tree_root.get(), nullptr, host_->active_tree());
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_->active_tree());
// We have to push properties to pick up the destruction list pointer.
TreeSynchronizer::PushProperties(layer_tree_root.get(),
layer_impl_tree_root.get());
layer_impl_tree_root->ResetAllChangeTrackingForSubtree();
// re-insert the layer and sync again.
child2->RemoveFromParent();
layer_tree_root->AddChild(child2);
layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
layer_impl_tree_root.Pass(),
host_->active_tree());
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_->active_tree());
TreeSynchronizer::PushProperties(layer_tree_root.get(),
layer_impl_tree_root.get());
// Check that the impl thread properly tracked the change.
EXPECT_FALSE(layer_impl_tree_root->LayerPropertyChanged());
EXPECT_FALSE(layer_impl_tree_root->children()[0]->LayerPropertyChanged());
EXPECT_TRUE(layer_impl_tree_root->children()[1]->LayerPropertyChanged());
}
TEST_F(TreeSynchronizerTest, SyncSimpleTreeAndProperties) {
scoped_refptr<Layer> layer_tree_root = Layer::Create(layer_settings_);
layer_tree_root->AddChild(Layer::Create(layer_settings_));
layer_tree_root->AddChild(Layer::Create(layer_settings_));
host_->SetRootLayer(layer_tree_root);
// Pick some random properties to set. The values are not important, we're
// just testing that at least some properties are making it through.
gfx::PointF root_position = gfx::PointF(2.3f, 7.4f);
layer_tree_root->SetPosition(root_position);
float first_child_opacity = 0.25f;
layer_tree_root->children()[0]->SetOpacity(first_child_opacity);
gfx::Size second_child_bounds = gfx::Size(25, 53);
layer_tree_root->children()[1]->SetBounds(second_child_bounds);
layer_tree_root->children()[1]->SavePaintProperties();
scoped_ptr<LayerImpl> layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(
layer_tree_root.get(), nullptr, host_->active_tree());
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_->active_tree());
TreeSynchronizer::PushProperties(layer_tree_root.get(),
layer_impl_tree_root.get());
// Check that the property values we set on the Layer tree are reflected in
// the LayerImpl tree.
gfx::PointF root_layer_impl_position = layer_impl_tree_root->position();
EXPECT_EQ(root_position.x(), root_layer_impl_position.x());
EXPECT_EQ(root_position.y(), root_layer_impl_position.y());
EXPECT_EQ(first_child_opacity,
layer_impl_tree_root->children()[0]->opacity());
gfx::Size second_layer_impl_child_bounds =
layer_impl_tree_root->children()[1]->bounds();
EXPECT_EQ(second_child_bounds.width(),
second_layer_impl_child_bounds.width());
EXPECT_EQ(second_child_bounds.height(),
second_layer_impl_child_bounds.height());
}
TEST_F(TreeSynchronizerTest, ReuseLayerImplsAfterStructuralChange) {
std::vector<int> layer_impl_destruction_list;
// Set up a tree with this sort of structure:
// root --- A --- B ---+--- C
// |
// +--- D
scoped_refptr<Layer> layer_tree_root =
MockLayer::Create(layer_settings_, &layer_impl_destruction_list);
layer_tree_root->AddChild(
MockLayer::Create(layer_settings_, &layer_impl_destruction_list));
scoped_refptr<Layer> layer_a = layer_tree_root->children()[0].get();
layer_a->AddChild(
MockLayer::Create(layer_settings_, &layer_impl_destruction_list));
scoped_refptr<Layer> layer_b = layer_a->children()[0].get();
layer_b->AddChild(
MockLayer::Create(layer_settings_, &layer_impl_destruction_list));
scoped_refptr<Layer> layer_c = layer_b->children()[0].get();
layer_b->AddChild(
MockLayer::Create(layer_settings_, &layer_impl_destruction_list));
scoped_refptr<Layer> layer_d = layer_b->children()[1].get();
host_->SetRootLayer(layer_tree_root);
scoped_ptr<LayerImpl> layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(
layer_tree_root.get(), nullptr, host_->active_tree());
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_->active_tree());
// We have to push properties to pick up the destruction list pointer.
TreeSynchronizer::PushProperties(layer_tree_root.get(),
layer_impl_tree_root.get());
// Now restructure the tree to look like this:
// root --- D ---+--- A
// |
// +--- C --- B
layer_tree_root->RemoveAllChildren();
layer_d->RemoveAllChildren();
layer_tree_root->AddChild(layer_d);
layer_a->RemoveAllChildren();
layer_d->AddChild(layer_a);
layer_c->RemoveAllChildren();
layer_d->AddChild(layer_c);
layer_b->RemoveAllChildren();
layer_c->AddChild(layer_b);
// After another synchronize our trees should match and we should not have
// destroyed any LayerImpls
layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
layer_impl_tree_root.Pass(),
host_->active_tree());
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_->active_tree());
EXPECT_EQ(0u, layer_impl_destruction_list.size());
}
// Constructs a very simple tree, synchronizes it, then synchronizes to a
// totally new tree. All layers from the old tree should be deleted.
TEST_F(TreeSynchronizerTest, SyncSimpleTreeThenDestroy) {
std::vector<int> layer_impl_destruction_list;
scoped_refptr<Layer> old_layer_tree_root =
MockLayer::Create(layer_settings_, &layer_impl_destruction_list);
old_layer_tree_root->AddChild(
MockLayer::Create(layer_settings_, &layer_impl_destruction_list));
old_layer_tree_root->AddChild(
MockLayer::Create(layer_settings_, &layer_impl_destruction_list));
host_->SetRootLayer(old_layer_tree_root);
int old_tree_root_layer_id = old_layer_tree_root->id();
int old_tree_first_child_layer_id = old_layer_tree_root->children()[0]->id();
int old_tree_second_child_layer_id = old_layer_tree_root->children()[1]->id();
scoped_ptr<LayerImpl> layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(
old_layer_tree_root.get(), nullptr, host_->active_tree());
ExpectTreesAreIdentical(old_layer_tree_root.get(),
layer_impl_tree_root.get(),
host_->active_tree());
// We have to push properties to pick up the destruction list pointer.
TreeSynchronizer::PushProperties(old_layer_tree_root.get(),
layer_impl_tree_root.get());
// Remove all children on the Layer side.
old_layer_tree_root->RemoveAllChildren();
// Synchronize again. After the sync all LayerImpls from the old tree should
// be deleted.
scoped_refptr<Layer> new_layer_tree_root = Layer::Create(layer_settings_);
host_->SetRootLayer(new_layer_tree_root);
layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(new_layer_tree_root.get(),
layer_impl_tree_root.Pass(),
host_->active_tree());
ExpectTreesAreIdentical(new_layer_tree_root.get(),
layer_impl_tree_root.get(),
host_->active_tree());
ASSERT_EQ(3u, layer_impl_destruction_list.size());
EXPECT_TRUE(std::find(layer_impl_destruction_list.begin(),
layer_impl_destruction_list.end(),
old_tree_root_layer_id) !=
layer_impl_destruction_list.end());
EXPECT_TRUE(std::find(layer_impl_destruction_list.begin(),
layer_impl_destruction_list.end(),
old_tree_first_child_layer_id) !=
layer_impl_destruction_list.end());
EXPECT_TRUE(std::find(layer_impl_destruction_list.begin(),
layer_impl_destruction_list.end(),
old_tree_second_child_layer_id) !=
layer_impl_destruction_list.end());
}
// Constructs+syncs a tree with mask, replica, and replica mask layers.
TEST_F(TreeSynchronizerTest, SyncMaskReplicaAndReplicaMaskLayers) {
scoped_refptr<Layer> layer_tree_root = Layer::Create(layer_settings_);
layer_tree_root->AddChild(Layer::Create(layer_settings_));
layer_tree_root->AddChild(Layer::Create(layer_settings_));
layer_tree_root->AddChild(Layer::Create(layer_settings_));
// First child gets a mask layer.
scoped_refptr<Layer> mask_layer = Layer::Create(layer_settings_);
layer_tree_root->children()[0]->SetMaskLayer(mask_layer.get());
// Second child gets a replica layer.
scoped_refptr<Layer> replica_layer = Layer::Create(layer_settings_);
layer_tree_root->children()[1]->SetReplicaLayer(replica_layer.get());
// Third child gets a replica layer with a mask layer.
scoped_refptr<Layer> replica_layer_with_mask = Layer::Create(layer_settings_);
scoped_refptr<Layer> replica_mask_layer = Layer::Create(layer_settings_);
replica_layer_with_mask->SetMaskLayer(replica_mask_layer.get());
layer_tree_root->children()[2]->
SetReplicaLayer(replica_layer_with_mask.get());
host_->SetRootLayer(layer_tree_root);
scoped_ptr<LayerImpl> layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(
layer_tree_root.get(), nullptr, host_->active_tree());
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_->active_tree());
// Remove the mask layer.
layer_tree_root->children()[0]->SetMaskLayer(NULL);
layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
layer_impl_tree_root.Pass(),
host_->active_tree());
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_->active_tree());
// Remove the replica layer.
layer_tree_root->children()[1]->SetReplicaLayer(NULL);
layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
layer_impl_tree_root.Pass(),
host_->active_tree());
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_->active_tree());
// Remove the replica mask.
replica_layer_with_mask->SetMaskLayer(NULL);
layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
layer_impl_tree_root.Pass(),
host_->active_tree());
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_->active_tree());
}
TEST_F(TreeSynchronizerTest, SynchronizeAnimations) {
LayerTreeSettings settings;
FakeImplTaskRunnerProvider task_runner_provider;
FakeRenderingStatsInstrumentation stats_instrumentation;
TestSharedBitmapManager shared_bitmap_manager;
TestTaskGraphRunner task_graph_runner;
scoped_ptr<LayerTreeHostImpl> host_impl = LayerTreeHostImpl::Create(
settings, nullptr, &task_runner_provider, &stats_instrumentation,
&shared_bitmap_manager, nullptr, &task_graph_runner, 0);
scoped_refptr<Layer> layer_tree_root = Layer::Create(layer_settings_);
host_->SetRootLayer(layer_tree_root);
layer_tree_root->SetLayerAnimationControllerForTest(
FakeLayerAnimationController::Create());
EXPECT_FALSE(static_cast<FakeLayerAnimationController*>(
layer_tree_root->layer_animation_controller())->SynchronizedAnimations());
scoped_ptr<LayerImpl> layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(
layer_tree_root.get(), nullptr, host_->active_tree());
TreeSynchronizer::PushProperties(layer_tree_root.get(),
layer_impl_tree_root.get());
layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
layer_impl_tree_root.Pass(),
host_->active_tree());
EXPECT_TRUE(static_cast<FakeLayerAnimationController*>(
layer_tree_root->layer_animation_controller())->SynchronizedAnimations());
}
TEST_F(TreeSynchronizerTest, SynchronizeScrollParent) {
LayerTreeSettings settings;
FakeImplTaskRunnerProvider task_runner_provider;
FakeRenderingStatsInstrumentation stats_instrumentation;
TestSharedBitmapManager shared_bitmap_manager;
TestTaskGraphRunner task_graph_runner;
scoped_ptr<LayerTreeHostImpl> host_impl = LayerTreeHostImpl::Create(
settings, nullptr, &task_runner_provider, &stats_instrumentation,
&shared_bitmap_manager, nullptr, &task_graph_runner, 0);
scoped_refptr<Layer> layer_tree_root = Layer::Create(layer_settings_);
scoped_refptr<Layer> scroll_parent = Layer::Create(layer_settings_);
layer_tree_root->AddChild(scroll_parent);
layer_tree_root->AddChild(Layer::Create(layer_settings_));
layer_tree_root->AddChild(Layer::Create(layer_settings_));
host_->SetRootLayer(layer_tree_root);
// First child is the second and third child's scroll parent.
layer_tree_root->children()[1]->SetScrollParent(scroll_parent.get());
layer_tree_root->children()[2]->SetScrollParent(scroll_parent.get());
scoped_ptr<LayerImpl> layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(
layer_tree_root.get(), nullptr, host_impl->active_tree());
TreeSynchronizer::PushProperties(layer_tree_root.get(),
layer_impl_tree_root.get());
{
SCOPED_TRACE("case one");
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_impl->active_tree());
}
// Remove the first scroll child.
layer_tree_root->children()[1]->RemoveFromParent();
layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
layer_impl_tree_root.Pass(),
host_impl->active_tree());
TreeSynchronizer::PushProperties(layer_tree_root.get(),
layer_impl_tree_root.get());
{
SCOPED_TRACE("case two");
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_impl->active_tree());
}
// Add an additional scroll layer.
scoped_refptr<Layer> additional_scroll_child = Layer::Create(layer_settings_);
layer_tree_root->AddChild(additional_scroll_child);
additional_scroll_child->SetScrollParent(scroll_parent.get());
layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
layer_impl_tree_root.Pass(),
host_impl->active_tree());
TreeSynchronizer::PushProperties(layer_tree_root.get(),
layer_impl_tree_root.get());
{
SCOPED_TRACE("case three");
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_impl->active_tree());
}
}
TEST_F(TreeSynchronizerTest, SynchronizeClipParent) {
LayerTreeSettings settings;
FakeImplTaskRunnerProvider task_runner_provider;
FakeRenderingStatsInstrumentation stats_instrumentation;
TestSharedBitmapManager shared_bitmap_manager;
TestTaskGraphRunner task_graph_runner;
scoped_ptr<LayerTreeHostImpl> host_impl = LayerTreeHostImpl::Create(
settings, nullptr, &task_runner_provider, &stats_instrumentation,
&shared_bitmap_manager, nullptr, &task_graph_runner, 0);
scoped_refptr<Layer> layer_tree_root = Layer::Create(layer_settings_);
scoped_refptr<Layer> clip_parent = Layer::Create(layer_settings_);
scoped_refptr<Layer> intervening = Layer::Create(layer_settings_);
scoped_refptr<Layer> clip_child1 = Layer::Create(layer_settings_);
scoped_refptr<Layer> clip_child2 = Layer::Create(layer_settings_);
layer_tree_root->AddChild(clip_parent);
clip_parent->AddChild(intervening);
intervening->AddChild(clip_child1);
intervening->AddChild(clip_child2);
host_->SetRootLayer(layer_tree_root);
// First child is the second and third child's scroll parent.
clip_child1->SetClipParent(clip_parent.get());
clip_child2->SetClipParent(clip_parent.get());
scoped_ptr<LayerImpl> layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(
layer_tree_root.get(), nullptr, host_impl->active_tree());
TreeSynchronizer::PushProperties(layer_tree_root.get(),
layer_impl_tree_root.get());
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_impl->active_tree());
// Remove the first clip child.
clip_child1->RemoveFromParent();
clip_child1 = NULL;
layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
layer_impl_tree_root.Pass(),
host_impl->active_tree());
TreeSynchronizer::PushProperties(layer_tree_root.get(),
layer_impl_tree_root.get());
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_impl->active_tree());
// Add an additional clip child.
scoped_refptr<Layer> additional_clip_child = Layer::Create(layer_settings_);
intervening->AddChild(additional_clip_child);
additional_clip_child->SetClipParent(clip_parent.get());
layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
layer_impl_tree_root.Pass(),
host_impl->active_tree());
TreeSynchronizer::PushProperties(layer_tree_root.get(),
layer_impl_tree_root.get());
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_impl->active_tree());
// Remove the nearest clipping ancestor.
clip_parent->RemoveFromParent();
clip_parent = NULL;
layer_impl_tree_root =
TreeSynchronizer::SynchronizeTrees(layer_tree_root.get(),
layer_impl_tree_root.Pass(),
host_impl->active_tree());
TreeSynchronizer::PushProperties(layer_tree_root.get(),
layer_impl_tree_root.get());
ExpectTreesAreIdentical(layer_tree_root.get(),
layer_impl_tree_root.get(),
host_impl->active_tree());
// The clip children should have been unhooked.
EXPECT_EQ(2u, intervening->children().size());
EXPECT_FALSE(clip_child2->clip_parent());
EXPECT_FALSE(additional_clip_child->clip_parent());
}
} // namespace
} // namespace cc