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// Copyright 2012 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_iterator.h"
#include <vector>
#include "cc/layers/layer.h"
#include "cc/test/fake_layer_tree_host.h"
#include "cc/trees/layer_tree_host_common.h"
#include "testing/gmock/include/gmock/gmock.h"
#include "testing/gtest/include/gtest/gtest.h"
#include "ui/gfx/transform.h"
using ::testing::Mock;
using ::testing::_;
using ::testing::AtLeast;
using ::testing::AnyNumber;
namespace cc {
namespace {
class TestLayer : public Layer {
public:
static scoped_refptr<TestLayer> Create() {
return make_scoped_refptr(new TestLayer());
}
int count_representing_target_surface_;
int count_representing_contributing_surface_;
int count_representing_itself_;
virtual bool DrawsContent() const override { return draws_content_; }
void set_draws_content(bool draws_content) { draws_content_ = draws_content; }
private:
TestLayer() : Layer(), draws_content_(true) {
SetBounds(gfx::Size(100, 100));
SetPosition(gfx::Point());
}
virtual ~TestLayer() {}
bool draws_content_;
};
#define EXPECT_COUNT(layer, target, contrib, itself) \
EXPECT_EQ(target, layer->count_representing_target_surface_); \
EXPECT_EQ(contrib, layer->count_representing_contributing_surface_); \
EXPECT_EQ(itself, layer->count_representing_itself_);
typedef LayerIterator<Layer> FrontToBack;
void ResetCounts(RenderSurfaceLayerList* render_surface_layer_list) {
for (unsigned surface_index = 0;
surface_index < render_surface_layer_list->size();
++surface_index) {
TestLayer* render_surface_layer = static_cast<TestLayer*>(
render_surface_layer_list->at(surface_index));
RenderSurface* render_surface = render_surface_layer->render_surface();
render_surface_layer->count_representing_target_surface_ = -1;
render_surface_layer->count_representing_contributing_surface_ = -1;
render_surface_layer->count_representing_itself_ = -1;
for (unsigned layer_index = 0;
layer_index < render_surface->layer_list().size();
++layer_index) {
TestLayer* layer = static_cast<TestLayer*>(
render_surface->layer_list().at(layer_index).get());
layer->count_representing_target_surface_ = -1;
layer->count_representing_contributing_surface_ = -1;
layer->count_representing_itself_ = -1;
}
}
}
void IterateFrontToBack(
RenderSurfaceLayerList* render_surface_layer_list) {
ResetCounts(render_surface_layer_list);
int count = 0;
for (FrontToBack it = FrontToBack::Begin(render_surface_layer_list);
it != FrontToBack::End(render_surface_layer_list);
++it, ++count) {
TestLayer* layer = static_cast<TestLayer*>(*it);
if (it.represents_target_render_surface())
layer->count_representing_target_surface_ = count;
if (it.represents_contributing_render_surface())
layer->count_representing_contributing_surface_ = count;
if (it.represents_itself())
layer->count_representing_itself_ = count;
}
}
TEST(LayerIteratorTest, EmptyTree) {
RenderSurfaceLayerList render_surface_layer_list;
IterateFrontToBack(&render_surface_layer_list);
}
TEST(LayerIteratorTest, SimpleTree) {
scoped_refptr<TestLayer> root_layer = TestLayer::Create();
scoped_refptr<TestLayer> first = TestLayer::Create();
scoped_refptr<TestLayer> second = TestLayer::Create();
scoped_refptr<TestLayer> third = TestLayer::Create();
scoped_refptr<TestLayer> fourth = TestLayer::Create();
root_layer->AddChild(first);
root_layer->AddChild(second);
root_layer->AddChild(third);
root_layer->AddChild(fourth);
FakeLayerTreeHostClient client(FakeLayerTreeHostClient::DIRECT_3D);
scoped_ptr<FakeLayerTreeHost> host = FakeLayerTreeHost::Create(&client);
host->SetRootLayer(root_layer);
RenderSurfaceLayerList render_surface_layer_list;
LayerTreeHostCommon::CalcDrawPropsMainInputsForTesting inputs(
root_layer.get(), root_layer->bounds(), &render_surface_layer_list);
LayerTreeHostCommon::CalculateDrawProperties(&inputs);
IterateFrontToBack(&render_surface_layer_list);
EXPECT_COUNT(root_layer, 5, -1, 4);
EXPECT_COUNT(first, -1, -1, 3);
EXPECT_COUNT(second, -1, -1, 2);
EXPECT_COUNT(third, -1, -1, 1);
EXPECT_COUNT(fourth, -1, -1, 0);
}
TEST(LayerIteratorTest, ComplexTree) {
scoped_refptr<TestLayer> root_layer = TestLayer::Create();
scoped_refptr<TestLayer> root1 = TestLayer::Create();
scoped_refptr<TestLayer> root2 = TestLayer::Create();
scoped_refptr<TestLayer> root3 = TestLayer::Create();
scoped_refptr<TestLayer> root21 = TestLayer::Create();
scoped_refptr<TestLayer> root22 = TestLayer::Create();
scoped_refptr<TestLayer> root23 = TestLayer::Create();
scoped_refptr<TestLayer> root221 = TestLayer::Create();
scoped_refptr<TestLayer> root231 = TestLayer::Create();
root_layer->AddChild(root1);
root_layer->AddChild(root2);
root_layer->AddChild(root3);
root2->AddChild(root21);
root2->AddChild(root22);
root2->AddChild(root23);
root22->AddChild(root221);
root23->AddChild(root231);
FakeLayerTreeHostClient client(FakeLayerTreeHostClient::DIRECT_3D);
scoped_ptr<FakeLayerTreeHost> host = FakeLayerTreeHost::Create(&client);
host->SetRootLayer(root_layer);
RenderSurfaceLayerList render_surface_layer_list;
LayerTreeHostCommon::CalcDrawPropsMainInputsForTesting inputs(
root_layer.get(), root_layer->bounds(), &render_surface_layer_list);
LayerTreeHostCommon::CalculateDrawProperties(&inputs);
IterateFrontToBack(&render_surface_layer_list);
EXPECT_COUNT(root_layer, 9, -1, 8);
EXPECT_COUNT(root1, -1, -1, 7);
EXPECT_COUNT(root2, -1, -1, 6);
EXPECT_COUNT(root21, -1, -1, 5);
EXPECT_COUNT(root22, -1, -1, 4);
EXPECT_COUNT(root221, -1, -1, 3);
EXPECT_COUNT(root23, -1, -1, 2);
EXPECT_COUNT(root231, -1, -1, 1);
EXPECT_COUNT(root3, -1, -1, 0);
}
TEST(LayerIteratorTest, ComplexTreeMultiSurface) {
scoped_refptr<TestLayer> root_layer = TestLayer::Create();
scoped_refptr<TestLayer> root1 = TestLayer::Create();
scoped_refptr<TestLayer> root2 = TestLayer::Create();
scoped_refptr<TestLayer> root3 = TestLayer::Create();
scoped_refptr<TestLayer> root21 = TestLayer::Create();
scoped_refptr<TestLayer> root22 = TestLayer::Create();
scoped_refptr<TestLayer> root23 = TestLayer::Create();
scoped_refptr<TestLayer> root221 = TestLayer::Create();
scoped_refptr<TestLayer> root231 = TestLayer::Create();
root_layer->AddChild(root1);
root_layer->AddChild(root2);
root_layer->AddChild(root3);
root2->set_draws_content(false);
root2->SetOpacity(0.5f);
root2->SetForceRenderSurface(true); // Force the layer to own a new surface.
root2->AddChild(root21);
root2->AddChild(root22);
root2->AddChild(root23);
root22->SetOpacity(0.5f);
root22->AddChild(root221);
root23->SetOpacity(0.5f);
root23->AddChild(root231);
FakeLayerTreeHostClient client(FakeLayerTreeHostClient::DIRECT_3D);
scoped_ptr<FakeLayerTreeHost> host = FakeLayerTreeHost::Create(&client);
host->SetRootLayer(root_layer);
RenderSurfaceLayerList render_surface_layer_list;
LayerTreeHostCommon::CalcDrawPropsMainInputsForTesting inputs(
root_layer.get(), root_layer->bounds(), &render_surface_layer_list);
LayerTreeHostCommon::CalculateDrawProperties(&inputs);
IterateFrontToBack(&render_surface_layer_list);
EXPECT_COUNT(root_layer, 14, -1, 13);
EXPECT_COUNT(root1, -1, -1, 12);
EXPECT_COUNT(root2, 10, 11, -1);
EXPECT_COUNT(root21, -1, -1, 9);
EXPECT_COUNT(root22, 7, 8, 6);
EXPECT_COUNT(root221, -1, -1, 5);
EXPECT_COUNT(root23, 3, 4, 2);
EXPECT_COUNT(root231, -1, -1, 1);
EXPECT_COUNT(root3, -1, -1, 0);
}
} // namespace
} // namespace cc
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