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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ui/compositor/layer_owner.h"
#include <utility>
#include "base/memory/raw_ptr.h"
#include "base/task/single_thread_task_runner.h"
#include "base/test/null_task_runner.h"
#include "cc/animation/animation.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/compositor/compositor.h"
#include "ui/compositor/layer.h"
#include "ui/compositor/layer_animation_observer.h"
#include "ui/compositor/layer_animator.h"
#include "ui/compositor/layer_delegate.h"
#include "ui/compositor/scoped_animation_duration_scale_mode.h"
#include "ui/compositor/scoped_layer_animation_settings.h"
#include "ui/compositor/test/test_context_factories.h"
#include "ui/gfx/native_widget_types.h"
namespace ui {
namespace {
// An animation observer that confirms upon animation completion, that the
// compositor is not null.
class TestLayerAnimationObserver : public ImplicitAnimationObserver {
public:
explicit TestLayerAnimationObserver(Layer* layer) : layer_(layer) {}
TestLayerAnimationObserver(const TestLayerAnimationObserver&) = delete;
TestLayerAnimationObserver& operator=(const TestLayerAnimationObserver&) =
delete;
~TestLayerAnimationObserver() override = default;
// ImplicitAnimationObserver:
void OnImplicitAnimationsCompleted() override {
EXPECT_NE(nullptr, layer_->GetCompositor());
}
private:
raw_ptr<Layer> layer_;
};
class LayerOwnerForTesting : public LayerOwner {
public:
explicit LayerOwnerForTesting(std::unique_ptr<Layer> layer) {
SetLayer(std::move(layer));
}
void DestroyLayerForTesting() { DestroyLayer(); }
};
// Test fixture for LayerOwner tests that require a ui::Compositor.
class LayerOwnerTestWithCompositor : public testing::Test {
public:
LayerOwnerTestWithCompositor();
LayerOwnerTestWithCompositor(const LayerOwnerTestWithCompositor&) = delete;
LayerOwnerTestWithCompositor& operator=(const LayerOwnerTestWithCompositor&) =
delete;
~LayerOwnerTestWithCompositor() override;
void SetUp() override;
void TearDown() override;
protected:
ui::Compositor* compositor() { return compositor_.get(); }
private:
std::unique_ptr<ui::TestContextFactories> context_factories_;
std::unique_ptr<ui::Compositor> compositor_;
};
LayerOwnerTestWithCompositor::LayerOwnerTestWithCompositor() {
}
LayerOwnerTestWithCompositor::~LayerOwnerTestWithCompositor() {
}
void LayerOwnerTestWithCompositor::SetUp() {
scoped_refptr<base::SingleThreadTaskRunner> task_runner =
new base::NullTaskRunner();
const bool enable_pixel_output = false;
context_factories_ =
std::make_unique<ui::TestContextFactories>(enable_pixel_output);
compositor_ = std::make_unique<ui::Compositor>(
context_factories_->GetContextFactory()->AllocateFrameSinkId(),
context_factories_->GetContextFactory(), task_runner,
false /* enable_pixel_canvas */);
compositor_->SetAcceleratedWidget(gfx::kNullAcceleratedWidget);
}
void LayerOwnerTestWithCompositor::TearDown() {
compositor_.reset();
context_factories_.reset();
}
} // namespace
TEST_F(LayerOwnerTestWithCompositor, RecreateRootLayerWithCompositor) {
LayerOwnerForTesting owner(std::make_unique<Layer>());
Layer* layer = owner.layer();
compositor()->SetRootLayer(layer);
std::unique_ptr<Layer> layer_copy = owner.RecreateLayer();
EXPECT_EQ(compositor(), owner.layer()->GetCompositor());
EXPECT_EQ(owner.layer(), compositor()->root_layer());
EXPECT_EQ(nullptr, layer_copy->GetCompositor());
}
// Tests that recreating the root layer, while one of its children is animating,
// properly updates the compositor. So that compositor is not null for observers
// of animations being cancelled.
TEST_F(LayerOwnerTestWithCompositor, RecreateRootLayerDuringAnimation) {
LayerOwnerForTesting owner(std::make_unique<Layer>());
Layer* layer = owner.layer();
compositor()->SetRootLayer(layer);
std::unique_ptr<Layer> child(new Layer);
child->SetBounds(gfx::Rect(0, 0, 100, 100));
layer->Add(child.get());
// This observer checks that the compositor of |child| is not null upon
// animation completion.
std::unique_ptr<TestLayerAnimationObserver> observer(
new TestLayerAnimationObserver(child.get()));
std::unique_ptr<ui::ScopedAnimationDurationScaleMode> long_duration_animation(
new ui::ScopedAnimationDurationScaleMode(
ui::ScopedAnimationDurationScaleMode::SLOW_DURATION));
{
ui::ScopedLayerAnimationSettings animation(child->GetAnimator());
animation.SetTransitionDuration(base::Milliseconds(1000));
animation.AddObserver(observer.get());
gfx::Transform transform;
transform.Scale(0.5f, 0.5f);
child->SetTransform(transform);
}
std::unique_ptr<Layer> layer_copy = owner.RecreateLayer();
}
// Tests that recreating a non-root layer, while one of its children is
// animating, properly updates the compositor. So that compositor is not null
// for observers of animations being cancelled.
TEST_F(LayerOwnerTestWithCompositor, RecreateNonRootLayerDuringAnimation) {
std::unique_ptr<Layer> root_layer(new Layer);
compositor()->SetRootLayer(root_layer.get());
LayerOwnerForTesting owner(std::make_unique<Layer>());
Layer* layer = owner.layer();
root_layer->Add(layer);
std::unique_ptr<Layer> child(new Layer);
child->SetBounds(gfx::Rect(0, 0, 100, 100));
layer->Add(child.get());
// This observer checks that the compositor of |child| is not null upon
// animation completion.
std::unique_ptr<TestLayerAnimationObserver> observer(
new TestLayerAnimationObserver(child.get()));
std::unique_ptr<ui::ScopedAnimationDurationScaleMode> long_duration_animation(
new ui::ScopedAnimationDurationScaleMode(
ui::ScopedAnimationDurationScaleMode::SLOW_DURATION));
{
ui::ScopedLayerAnimationSettings animation(child->GetAnimator());
animation.SetTransitionDuration(base::Milliseconds(1000));
animation.AddObserver(observer.get());
gfx::Transform transform;
transform.Scale(0.5f, 0.5f);
child->SetTransform(transform);
}
std::unique_ptr<Layer> layer_copy = owner.RecreateLayer();
}
// Tests that if LayerOwner-derived class destroys layer, then
// LayerAnimator's animation becomes detached from compositor timeline.
TEST_F(LayerOwnerTestWithCompositor, DetachTimelineOnAnimatorDeletion) {
std::unique_ptr<Layer> root_layer(new Layer);
compositor()->SetRootLayer(root_layer.get());
LayerOwnerForTesting owner(std::make_unique<Layer>());
Layer* layer = owner.layer();
layer->SetOpacity(0.5f);
root_layer->Add(layer);
scoped_refptr<cc::Animation> animation =
layer->GetAnimator()->GetAnimationForTesting();
EXPECT_TRUE(animation);
EXPECT_TRUE(animation->animation_timeline());
// Destroying layer/animator must detach animator's animation from timeline.
owner.DestroyLayerForTesting();
EXPECT_FALSE(animation->animation_timeline());
}
// Tests that if we run threaded opacity animation on already added layer
// then LayerAnimator's animation becomes attached to timeline.
TEST_F(LayerOwnerTestWithCompositor,
AttachTimelineIfAnimatorCreatedAfterSetCompositor) {
std::unique_ptr<Layer> root_layer(new Layer);
compositor()->SetRootLayer(root_layer.get());
LayerOwnerForTesting owner(std::make_unique<Layer>());
Layer* layer = owner.layer();
root_layer->Add(layer);
layer->SetOpacity(0.5f);
scoped_refptr<cc::Animation> animation =
layer->GetAnimator()->GetAnimationForTesting();
EXPECT_TRUE(animation);
EXPECT_TRUE(animation->animation_timeline());
}
namespace {
class TestLayerDelegate : public LayerDelegate {
public:
explicit TestLayerDelegate(ui::LayerOwner* owner) : owner_(owner) {}
TestLayerDelegate(TestLayerDelegate&) = delete;
TestLayerDelegate& operator=(TestLayerDelegate&) = delete;
~TestLayerDelegate() override = default;
// LayerDelegate:
void OnPaintLayer(const PaintContext& context) override {}
void OnDeviceScaleFactorChanged(float old_device_scale_factor,
float new_device_scale_factor) override {}
void OnLayerBoundsChanged(const gfx::Rect& old_bounds,
PropertyChangeReason reason) override {
owner_->RecreateLayer();
}
private:
raw_ptr<ui::LayerOwner> owner_;
};
} // namespace
// Test if recreating a layer in OnLayerBoundsChanged will not
// cause a use-after-free.
TEST_F(LayerOwnerTestWithCompositor, DeleteOnLayerBoundsChanged) {
LayerOwnerForTesting owner(std::make_unique<Layer>());
TestLayerDelegate delegate(&owner);
owner.layer()->set_delegate(&delegate);
owner.layer()->SetBounds(gfx::Rect(100, 100));
}
} // namespace ui
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