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// Copyright 2013 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/layer_tree_host.h"
#include "cc/test/fake_content_layer_client.h"
#include "cc/test/fake_picture_layer.h"
#include "cc/test/fake_picture_layer_impl.h"
#include "cc/test/layer_tree_test.h"
#include "cc/trees/layer_tree_impl.h"
namespace cc {
namespace {
// These tests deal with picture layers.
class LayerTreeHostPictureTest : public LayerTreeTest {
protected:
virtual void InitializeSettings(LayerTreeSettings* settings) override {
// PictureLayer can only be used with impl side painting enabled.
settings->impl_side_painting = true;
}
};
class LayerTreeHostPictureTestTwinLayer
: public LayerTreeHostPictureTest {
virtual void SetupTree() override {
LayerTreeHostPictureTest::SetupTree();
scoped_refptr<FakePictureLayer> picture =
FakePictureLayer::Create(&client_);
layer_tree_host()->root_layer()->AddChild(picture);
}
virtual void BeginTest() override {
activates_ = 0;
PostSetNeedsCommitToMainThread();
}
virtual void DidCommit() override {
switch (layer_tree_host()->source_frame_number()) {
case 2:
// Drop the picture layer from the tree.
layer_tree_host()->root_layer()->children()[0]->RemoveFromParent();
break;
case 3:
// Add a new picture layer.
scoped_refptr<FakePictureLayer> picture =
FakePictureLayer::Create(&client_);
layer_tree_host()->root_layer()->AddChild(picture);
break;
}
}
virtual void WillActivateTreeOnThread(LayerTreeHostImpl* impl) override {
LayerImpl* pending_root_impl = impl->pending_tree()->root_layer();
LayerImpl* active_root_impl = impl->active_tree()->root_layer();
if (pending_root_impl->children().empty()) {
EXPECT_EQ(2, activates_);
return;
}
FakePictureLayerImpl* pending_picture_impl =
static_cast<FakePictureLayerImpl*>(pending_root_impl->children()[0]);
if (!active_root_impl) {
EXPECT_EQ(0, activates_);
EXPECT_EQ(NULL, pending_picture_impl->twin_layer());
return;
}
if (active_root_impl->children().empty()) {
EXPECT_EQ(3, activates_);
EXPECT_EQ(NULL, pending_picture_impl->twin_layer());
return;
}
FakePictureLayerImpl* active_picture_impl =
static_cast<FakePictureLayerImpl*>(active_root_impl->children()[0]);
// After the first activation, when we commit again, we'll have a pending
// and active layer. Then we recreate a picture layer in the 4th activate
// and the next commit will have a pending and active twin again.
EXPECT_TRUE(activates_ == 1 || activates_ == 4);
EXPECT_EQ(pending_picture_impl, active_picture_impl->twin_layer());
EXPECT_EQ(active_picture_impl, pending_picture_impl->twin_layer());
}
virtual void DidActivateTreeOnThread(LayerTreeHostImpl* impl) override {
LayerImpl* active_root_impl = impl->active_tree()->root_layer();
if (active_root_impl->children().empty()) {
EXPECT_EQ(2, activates_);
} else {
FakePictureLayerImpl* active_picture_impl =
static_cast<FakePictureLayerImpl*>(active_root_impl->children()[0]);
EXPECT_EQ(NULL, active_picture_impl->twin_layer());
}
++activates_;
if (activates_ <= 4)
PostSetNeedsCommitToMainThread();
else
EndTest();
}
virtual void AfterTest() override {}
FakeContentLayerClient client_;
int activates_;
};
MULTI_THREAD_TEST_F(LayerTreeHostPictureTestTwinLayer);
} // namespace
} // namespace cc
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