cc/layers/layer_unittest.cc

   1 // Copyright 2011 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "cc/layers/layer.h"
   6
   7 #include "base/thread_task_runner_handle.h"
   8 #include "cc/animation/keyframed_animation_curve.h"
   9 #include "cc/base/math_util.h"
  10 #include "cc/layers/layer_impl.h"
  11 #include "cc/output/copy_output_request.h"
  12 #include "cc/output/copy_output_result.h"
  13 #include "cc/test/animation_test_common.h"
  14 #include "cc/test/fake_impl_proxy.h"
  15 #include "cc/test/fake_layer_tree_host_client.h"
  16 #include "cc/test/fake_layer_tree_host_impl.h"
  17 #include "cc/test/geometry_test_utils.h"
  18 #include "cc/test/layer_test_common.h"
  19 #include "cc/test/test_gpu_memory_buffer_manager.h"
  20 #include "cc/test/test_shared_bitmap_manager.h"
  21 #include "cc/test/test_task_graph_runner.h"
  22 #include "cc/trees/layer_tree_host.h"
  23 #include "cc/trees/single_thread_proxy.h"
  24 #include "testing/gmock/include/gmock/gmock.h"
  25 #include "testing/gtest/include/gtest/gtest.h"
  26 #include "ui/gfx/transform.h"
  27
  28 using ::testing::AnyNumber;
  29 using ::testing::AtLeast;
  30 using ::testing::Mock;
  31 using ::testing::StrictMock;
  32 using ::testing::_;
  33
  34 #define EXPECT_SET_NEEDS_FULL_TREE_SYNC(expect, code_to_test)               \
  35   do {                                                                      \
  36     EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times((expect)); \
  37     code_to_test;                                                           \
  38     Mock::VerifyAndClearExpectations(layer_tree_host_.get());               \
  39   } while (false)
  40
  41 namespace cc {
  42 namespace {
  43
  44 class MockLayerTreeHost : public LayerTreeHost {
  45  public:
  46   MockLayerTreeHost(LayerTreeHostSingleThreadClient* single_thread_client,
  47                     LayerTreeHost::InitParams* params)
  48       : LayerTreeHost(params) {
  49     InitializeSingleThreaded(single_thread_client,
  50                              base::ThreadTaskRunnerHandle::Get(), nullptr);
  51   }
  52
  53   MOCK_METHOD0(SetNeedsCommit, void());
  54   MOCK_METHOD0(SetNeedsUpdateLayers, void());
  55   MOCK_METHOD0(SetNeedsFullTreeSync, void());
  56 };
  57
  58 class LayerTest : public testing::Test {
  59  public:
  60   LayerTest()
  61       : host_impl_(&proxy_, &shared_bitmap_manager_, &task_graph_runner_),
  62         fake_client_(FakeLayerTreeHostClient::DIRECT_3D) {}
  63
  64  protected:
  65   void SetUp() override {
  66     LayerTreeHost::InitParams params;
  67     LayerTreeSettings settings;
  68     params.client = &fake_client_;
  69     params.settings = &settings;
  70     params.task_graph_runner = &task_graph_runner_;
  71     layer_tree_host_.reset(
  72         new StrictMock<MockLayerTreeHost>(&fake_client_, &params));
  73   }
  74
  75   void TearDown() override {
  76     Mock::VerifyAndClearExpectations(layer_tree_host_.get());
  77     EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times(AnyNumber());
  78     parent_ = nullptr;
  79     child1_ = nullptr;
  80     child2_ = nullptr;
  81     child3_ = nullptr;
  82     grand_child1_ = nullptr;
  83     grand_child2_ = nullptr;
  84     grand_child3_ = nullptr;
  85
  86     layer_tree_host_->SetRootLayer(nullptr);
  87     layer_tree_host_ = nullptr;
  88   }
  89
  90   void VerifyTestTreeInitialState() const {
  91     ASSERT_EQ(3U, parent_->children().size());
  92     EXPECT_EQ(child1_, parent_->children()[0]);
  93     EXPECT_EQ(child2_, parent_->children()[1]);
  94     EXPECT_EQ(child3_, parent_->children()[2]);
  95     EXPECT_EQ(parent_.get(), child1_->parent());
  96     EXPECT_EQ(parent_.get(), child2_->parent());
  97     EXPECT_EQ(parent_.get(), child3_->parent());
  98
  99     ASSERT_EQ(2U, child1_->children().size());
 100     EXPECT_EQ(grand_child1_, child1_->children()[0]);
 101     EXPECT_EQ(grand_child2_, child1_->children()[1]);
 102     EXPECT_EQ(child1_.get(), grand_child1_->parent());
 103     EXPECT_EQ(child1_.get(), grand_child2_->parent());
 104
 105     ASSERT_EQ(1U, child2_->children().size());
 106     EXPECT_EQ(grand_child3_, child2_->children()[0]);
 107     EXPECT_EQ(child2_.get(), grand_child3_->parent());
 108
 109     ASSERT_EQ(0U, child3_->children().size());
 110   }
 111
 112   void CreateSimpleTestTree() {
 113     parent_ = Layer::Create(layer_settings_);
 114     child1_ = Layer::Create(layer_settings_);
 115     child2_ = Layer::Create(layer_settings_);
 116     child3_ = Layer::Create(layer_settings_);
 117     grand_child1_ = Layer::Create(layer_settings_);
 118     grand_child2_ = Layer::Create(layer_settings_);
 119     grand_child3_ = Layer::Create(layer_settings_);
 120
 121     EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times(AnyNumber());
 122     layer_tree_host_->SetRootLayer(parent_);
 123
 124     parent_->AddChild(child1_);
 125     parent_->AddChild(child2_);
 126     parent_->AddChild(child3_);
 127     child1_->AddChild(grand_child1_);
 128     child1_->AddChild(grand_child2_);
 129     child2_->AddChild(grand_child3_);
 130
 131     Mock::VerifyAndClearExpectations(layer_tree_host_.get());
 132
 133     VerifyTestTreeInitialState();
 134   }
 135
 136   FakeImplProxy proxy_;
 137   TestSharedBitmapManager shared_bitmap_manager_;
 138   TestTaskGraphRunner task_graph_runner_;
 139   FakeLayerTreeHostImpl host_impl_;
 140
 141   FakeLayerTreeHostClient fake_client_;
 142   scoped_ptr<StrictMock<MockLayerTreeHost>> layer_tree_host_;
 143   scoped_refptr<Layer> parent_;
 144   scoped_refptr<Layer> child1_;
 145   scoped_refptr<Layer> child2_;
 146   scoped_refptr<Layer> child3_;
 147   scoped_refptr<Layer> grand_child1_;
 148   scoped_refptr<Layer> grand_child2_;
 149   scoped_refptr<Layer> grand_child3_;
 150
 151   LayerSettings layer_settings_;
 152 };
 153
 154 TEST_F(LayerTest, BasicCreateAndDestroy) {
 155   scoped_refptr<Layer> test_layer = Layer::Create(layer_settings_);
 156   ASSERT_TRUE(test_layer.get());
 157
 158   EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(0);
 159   test_layer->SetLayerTreeHost(layer_tree_host_.get());
 160   Mock::VerifyAndClearExpectations(layer_tree_host_.get());
 161
 162   EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(0);
 163   test_layer->SetLayerTreeHost(nullptr);
 164 }
 165
 166 TEST_F(LayerTest, AddAndRemoveChild) {
 167   scoped_refptr<Layer> parent = Layer::Create(layer_settings_);
 168   scoped_refptr<Layer> child = Layer::Create(layer_settings_);
 169
 170   // Upon creation, layers should not have children or parent.
 171   ASSERT_EQ(0U, parent->children().size());
 172   EXPECT_FALSE(child->parent());
 173
 174   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, layer_tree_host_->SetRootLayer(parent));
 175   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->AddChild(child));
 176
 177   ASSERT_EQ(1U, parent->children().size());
 178   EXPECT_EQ(child.get(), parent->children()[0].get());
 179   EXPECT_EQ(parent.get(), child->parent());
 180   EXPECT_EQ(parent.get(), child->RootLayer());
 181
 182   EXPECT_SET_NEEDS_FULL_TREE_SYNC(AtLeast(1), child->RemoveFromParent());
 183 }
 184
 185 TEST_F(LayerTest, AddSameChildTwice) {
 186   EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times(AtLeast(1));
 187
 188   scoped_refptr<Layer> parent = Layer::Create(layer_settings_);
 189   scoped_refptr<Layer> child = Layer::Create(layer_settings_);
 190
 191   layer_tree_host_->SetRootLayer(parent);
 192
 193   ASSERT_EQ(0u, parent->children().size());
 194
 195   parent->AddChild(child);
 196   ASSERT_EQ(1u, parent->children().size());
 197   EXPECT_EQ(parent.get(), child->parent());
 198
 199   parent->AddChild(child);
 200   ASSERT_EQ(1u, parent->children().size());
 201   EXPECT_EQ(parent.get(), child->parent());
 202 }
 203
 204 TEST_F(LayerTest, InsertChild) {
 205   scoped_refptr<Layer> parent = Layer::Create(layer_settings_);
 206   scoped_refptr<Layer> child1 = Layer::Create(layer_settings_);
 207   scoped_refptr<Layer> child2 = Layer::Create(layer_settings_);
 208   scoped_refptr<Layer> child3 = Layer::Create(layer_settings_);
 209   scoped_refptr<Layer> child4 = Layer::Create(layer_settings_);
 210
 211   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, layer_tree_host_->SetRootLayer(parent));
 212
 213   ASSERT_EQ(0U, parent->children().size());
 214
 215   // Case 1: inserting to empty list.
 216   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->InsertChild(child3, 0));
 217   ASSERT_EQ(1U, parent->children().size());
 218   EXPECT_EQ(child3, parent->children()[0]);
 219   EXPECT_EQ(parent.get(), child3->parent());
 220
 221   // Case 2: inserting to beginning of list
 222   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->InsertChild(child1, 0));
 223   ASSERT_EQ(2U, parent->children().size());
 224   EXPECT_EQ(child1, parent->children()[0]);
 225   EXPECT_EQ(child3, parent->children()[1]);
 226   EXPECT_EQ(parent.get(), child1->parent());
 227
 228   // Case 3: inserting to middle of list
 229   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->InsertChild(child2, 1));
 230   ASSERT_EQ(3U, parent->children().size());
 231   EXPECT_EQ(child1, parent->children()[0]);
 232   EXPECT_EQ(child2, parent->children()[1]);
 233   EXPECT_EQ(child3, parent->children()[2]);
 234   EXPECT_EQ(parent.get(), child2->parent());
 235
 236   // Case 4: inserting to end of list
 237   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->InsertChild(child4, 3));
 238
 239   ASSERT_EQ(4U, parent->children().size());
 240   EXPECT_EQ(child1, parent->children()[0]);
 241   EXPECT_EQ(child2, parent->children()[1]);
 242   EXPECT_EQ(child3, parent->children()[2]);
 243   EXPECT_EQ(child4, parent->children()[3]);
 244   EXPECT_EQ(parent.get(), child4->parent());
 245
 246   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, layer_tree_host_->SetRootLayer(nullptr));
 247 }
 248
 249 TEST_F(LayerTest, InsertChildPastEndOfList) {
 250   scoped_refptr<Layer> parent = Layer::Create(layer_settings_);
 251   scoped_refptr<Layer> child1 = Layer::Create(layer_settings_);
 252   scoped_refptr<Layer> child2 = Layer::Create(layer_settings_);
 253
 254   ASSERT_EQ(0U, parent->children().size());
 255
 256   // insert to an out-of-bounds index
 257   parent->InsertChild(child1, 53);
 258
 259   ASSERT_EQ(1U, parent->children().size());
 260   EXPECT_EQ(child1, parent->children()[0]);
 261
 262   // insert another child to out-of-bounds, when list is not already empty.
 263   parent->InsertChild(child2, 2459);
 264
 265   ASSERT_EQ(2U, parent->children().size());
 266   EXPECT_EQ(child1, parent->children()[0]);
 267   EXPECT_EQ(child2, parent->children()[1]);
 268 }
 269
 270 TEST_F(LayerTest, InsertSameChildTwice) {
 271   scoped_refptr<Layer> parent = Layer::Create(layer_settings_);
 272   scoped_refptr<Layer> child1 = Layer::Create(layer_settings_);
 273   scoped_refptr<Layer> child2 = Layer::Create(layer_settings_);
 274
 275   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, layer_tree_host_->SetRootLayer(parent));
 276
 277   ASSERT_EQ(0U, parent->children().size());
 278
 279   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->InsertChild(child1, 0));
 280   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->InsertChild(child2, 1));
 281
 282   ASSERT_EQ(2U, parent->children().size());
 283   EXPECT_EQ(child1, parent->children()[0]);
 284   EXPECT_EQ(child2, parent->children()[1]);
 285
 286   // Inserting the same child again should cause the child to be removed and
 287   // re-inserted at the new location.
 288   EXPECT_SET_NEEDS_FULL_TREE_SYNC(AtLeast(1), parent->InsertChild(child1, 1));
 289
 290   // child1 should now be at the end of the list.
 291   ASSERT_EQ(2U, parent->children().size());
 292   EXPECT_EQ(child2, parent->children()[0]);
 293   EXPECT_EQ(child1, parent->children()[1]);
 294
 295   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, layer_tree_host_->SetRootLayer(nullptr));
 296 }
 297
 298 TEST_F(LayerTest, ReplaceChildWithNewChild) {
 299   CreateSimpleTestTree();
 300   scoped_refptr<Layer> child4 = Layer::Create(layer_settings_);
 301
 302   EXPECT_FALSE(child4->parent());
 303
 304   EXPECT_SET_NEEDS_FULL_TREE_SYNC(
 305       AtLeast(1), parent_->ReplaceChild(child2_.get(), child4));
 306   EXPECT_FALSE(parent_->NeedsDisplayForTesting());
 307   EXPECT_FALSE(child1_->NeedsDisplayForTesting());
 308   EXPECT_FALSE(child2_->NeedsDisplayForTesting());
 309   EXPECT_FALSE(child3_->NeedsDisplayForTesting());
 310   EXPECT_FALSE(child4->NeedsDisplayForTesting());
 311
 312   ASSERT_EQ(static_cast<size_t>(3), parent_->children().size());
 313   EXPECT_EQ(child1_, parent_->children()[0]);
 314   EXPECT_EQ(child4, parent_->children()[1]);
 315   EXPECT_EQ(child3_, parent_->children()[2]);
 316   EXPECT_EQ(parent_.get(), child4->parent());
 317
 318   EXPECT_FALSE(child2_->parent());
 319 }
 320
 321 TEST_F(LayerTest, ReplaceChildWithNewChildThatHasOtherParent) {
 322   CreateSimpleTestTree();
 323
 324   // create another simple tree with test_layer and child4.
 325   scoped_refptr<Layer> test_layer = Layer::Create(layer_settings_);
 326   scoped_refptr<Layer> child4 = Layer::Create(layer_settings_);
 327   test_layer->AddChild(child4);
 328   ASSERT_EQ(1U, test_layer->children().size());
 329   EXPECT_EQ(child4, test_layer->children()[0]);
 330   EXPECT_EQ(test_layer.get(), child4->parent());
 331
 332   EXPECT_SET_NEEDS_FULL_TREE_SYNC(
 333       AtLeast(1), parent_->ReplaceChild(child2_.get(), child4));
 334
 335   ASSERT_EQ(3U, parent_->children().size());
 336   EXPECT_EQ(child1_, parent_->children()[0]);
 337   EXPECT_EQ(child4, parent_->children()[1]);
 338   EXPECT_EQ(child3_, parent_->children()[2]);
 339   EXPECT_EQ(parent_.get(), child4->parent());
 340
 341   // test_layer should no longer have child4,
 342   // and child2 should no longer have a parent.
 343   ASSERT_EQ(0U, test_layer->children().size());
 344   EXPECT_FALSE(child2_->parent());
 345 }
 346
 347 TEST_F(LayerTest, DeleteRemovedScrollParent) {
 348   scoped_refptr<Layer> parent = Layer::Create(layer_settings_);
 349   scoped_refptr<Layer> child1 = Layer::Create(layer_settings_);
 350   scoped_refptr<Layer> child2 = Layer::Create(layer_settings_);
 351
 352   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, layer_tree_host_->SetRootLayer(parent));
 353
 354   ASSERT_EQ(0U, parent->children().size());
 355
 356   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->InsertChild(child1, 0));
 357   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->InsertChild(child2, 1));
 358
 359   ASSERT_EQ(2U, parent->children().size());
 360   EXPECT_EQ(child1, parent->children()[0]);
 361   EXPECT_EQ(child2, parent->children()[1]);
 362
 363   EXPECT_SET_NEEDS_COMMIT(2, child1->SetScrollParent(child2.get()));
 364
 365   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, child2->RemoveFromParent());
 366
 367   child1->reset_needs_push_properties_for_testing();
 368
 369   EXPECT_SET_NEEDS_COMMIT(1, child2 = nullptr);
 370
 371   EXPECT_TRUE(child1->needs_push_properties());
 372
 373   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, layer_tree_host_->SetRootLayer(nullptr));
 374 }
 375
 376 TEST_F(LayerTest, DeleteRemovedScrollChild) {
 377   scoped_refptr<Layer> parent = Layer::Create(layer_settings_);
 378   scoped_refptr<Layer> child1 = Layer::Create(layer_settings_);
 379   scoped_refptr<Layer> child2 = Layer::Create(layer_settings_);
 380
 381   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, layer_tree_host_->SetRootLayer(parent));
 382
 383   ASSERT_EQ(0U, parent->children().size());
 384
 385   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->InsertChild(child1, 0));
 386   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, parent->InsertChild(child2, 1));
 387
 388   ASSERT_EQ(2U, parent->children().size());
 389   EXPECT_EQ(child1, parent->children()[0]);
 390   EXPECT_EQ(child2, parent->children()[1]);
 391
 392   EXPECT_SET_NEEDS_COMMIT(2, child1->SetScrollParent(child2.get()));
 393
 394   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, child1->RemoveFromParent());
 395
 396   child2->reset_needs_push_properties_for_testing();
 397
 398   EXPECT_SET_NEEDS_COMMIT(1, child1 = nullptr);
 399
 400   EXPECT_TRUE(child2->needs_push_properties());
 401
 402   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, layer_tree_host_->SetRootLayer(nullptr));
 403 }
 404
 405 TEST_F(LayerTest, ReplaceChildWithSameChild) {
 406   CreateSimpleTestTree();
 407
 408   // SetNeedsFullTreeSync / SetNeedsCommit should not be called because its the
 409   // same child.
 410   EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(0);
 411   EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times(0);
 412   parent_->ReplaceChild(child2_.get(), child2_);
 413
 414   VerifyTestTreeInitialState();
 415 }
 416
 417 TEST_F(LayerTest, RemoveAllChildren) {
 418   CreateSimpleTestTree();
 419
 420   EXPECT_SET_NEEDS_FULL_TREE_SYNC(AtLeast(3), parent_->RemoveAllChildren());
 421
 422   ASSERT_EQ(0U, parent_->children().size());
 423   EXPECT_FALSE(child1_->parent());
 424   EXPECT_FALSE(child2_->parent());
 425   EXPECT_FALSE(child3_->parent());
 426 }
 427
 428 TEST_F(LayerTest, SetChildren) {
 429   scoped_refptr<Layer> old_parent = Layer::Create(layer_settings_);
 430   scoped_refptr<Layer> new_parent = Layer::Create(layer_settings_);
 431
 432   scoped_refptr<Layer> child1 = Layer::Create(layer_settings_);
 433   scoped_refptr<Layer> child2 = Layer::Create(layer_settings_);
 434
 435   LayerList new_children;
 436   new_children.push_back(child1);
 437   new_children.push_back(child2);
 438
 439   // Set up and verify initial test conditions: child1 has a parent, child2 has
 440   // no parent.
 441   old_parent->AddChild(child1);
 442   ASSERT_EQ(0U, new_parent->children().size());
 443   EXPECT_EQ(old_parent.get(), child1->parent());
 444   EXPECT_FALSE(child2->parent());
 445
 446   EXPECT_SET_NEEDS_FULL_TREE_SYNC(
 447       1, layer_tree_host_->SetRootLayer(new_parent));
 448
 449   EXPECT_SET_NEEDS_FULL_TREE_SYNC(
 450       AtLeast(1), new_parent->SetChildren(new_children));
 451
 452   ASSERT_EQ(2U, new_parent->children().size());
 453   EXPECT_EQ(new_parent.get(), child1->parent());
 454   EXPECT_EQ(new_parent.get(), child2->parent());
 455
 456   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, layer_tree_host_->SetRootLayer(nullptr));
 457 }
 458
 459 TEST_F(LayerTest, HasAncestor) {
 460   scoped_refptr<Layer> parent = Layer::Create(layer_settings_);
 461   EXPECT_FALSE(parent->HasAncestor(parent.get()));
 462
 463   scoped_refptr<Layer> child = Layer::Create(layer_settings_);
 464   parent->AddChild(child);
 465
 466   EXPECT_FALSE(child->HasAncestor(child.get()));
 467   EXPECT_TRUE(child->HasAncestor(parent.get()));
 468   EXPECT_FALSE(parent->HasAncestor(child.get()));
 469
 470   scoped_refptr<Layer> child_child = Layer::Create(layer_settings_);
 471   child->AddChild(child_child);
 472
 473   EXPECT_FALSE(child_child->HasAncestor(child_child.get()));
 474   EXPECT_TRUE(child_child->HasAncestor(parent.get()));
 475   EXPECT_TRUE(child_child->HasAncestor(child.get()));
 476   EXPECT_FALSE(parent->HasAncestor(child.get()));
 477   EXPECT_FALSE(parent->HasAncestor(child_child.get()));
 478 }
 479
 480 TEST_F(LayerTest, GetRootLayerAfterTreeManipulations) {
 481   CreateSimpleTestTree();
 482
 483   // For this test we don't care about SetNeedsFullTreeSync calls.
 484   EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times(AnyNumber());
 485
 486   scoped_refptr<Layer> child4 = Layer::Create(layer_settings_);
 487
 488   EXPECT_EQ(parent_.get(), parent_->RootLayer());
 489   EXPECT_EQ(parent_.get(), child1_->RootLayer());
 490   EXPECT_EQ(parent_.get(), child2_->RootLayer());
 491   EXPECT_EQ(parent_.get(), child3_->RootLayer());
 492   EXPECT_EQ(child4.get(),   child4->RootLayer());
 493   EXPECT_EQ(parent_.get(), grand_child1_->RootLayer());
 494   EXPECT_EQ(parent_.get(), grand_child2_->RootLayer());
 495   EXPECT_EQ(parent_.get(), grand_child3_->RootLayer());
 496
 497   child1_->RemoveFromParent();
 498
 499   // |child1| and its children, grand_child1 and grand_child2 are now on a
 500   // separate subtree.
 501   EXPECT_EQ(parent_.get(), parent_->RootLayer());
 502   EXPECT_EQ(child1_.get(), child1_->RootLayer());
 503   EXPECT_EQ(parent_.get(), child2_->RootLayer());
 504   EXPECT_EQ(parent_.get(), child3_->RootLayer());
 505   EXPECT_EQ(child4.get(), child4->RootLayer());
 506   EXPECT_EQ(child1_.get(), grand_child1_->RootLayer());
 507   EXPECT_EQ(child1_.get(), grand_child2_->RootLayer());
 508   EXPECT_EQ(parent_.get(), grand_child3_->RootLayer());
 509
 510   grand_child3_->AddChild(child4);
 511
 512   EXPECT_EQ(parent_.get(), parent_->RootLayer());
 513   EXPECT_EQ(child1_.get(), child1_->RootLayer());
 514   EXPECT_EQ(parent_.get(), child2_->RootLayer());
 515   EXPECT_EQ(parent_.get(), child3_->RootLayer());
 516   EXPECT_EQ(parent_.get(), child4->RootLayer());
 517   EXPECT_EQ(child1_.get(), grand_child1_->RootLayer());
 518   EXPECT_EQ(child1_.get(), grand_child2_->RootLayer());
 519   EXPECT_EQ(parent_.get(), grand_child3_->RootLayer());
 520
 521   child2_->ReplaceChild(grand_child3_.get(), child1_);
 522
 523   // |grand_child3| gets orphaned and the child1 subtree gets planted back into
 524   // the tree under child2.
 525   EXPECT_EQ(parent_.get(), parent_->RootLayer());
 526   EXPECT_EQ(parent_.get(), child1_->RootLayer());
 527   EXPECT_EQ(parent_.get(), child2_->RootLayer());
 528   EXPECT_EQ(parent_.get(), child3_->RootLayer());
 529   EXPECT_EQ(grand_child3_.get(), child4->RootLayer());
 530   EXPECT_EQ(parent_.get(), grand_child1_->RootLayer());
 531   EXPECT_EQ(parent_.get(), grand_child2_->RootLayer());
 532   EXPECT_EQ(grand_child3_.get(), grand_child3_->RootLayer());
 533 }
 534
 535 TEST_F(LayerTest, CheckSetNeedsDisplayCausesCorrectBehavior) {
 536   // The semantics for SetNeedsDisplay which are tested here:
 537   //   1. sets NeedsDisplay flag appropriately.
 538   //   2. indirectly calls SetNeedsUpdate, exactly once for each call to
 539   //      SetNeedsDisplay.
 540
 541   scoped_refptr<Layer> test_layer = Layer::Create(layer_settings_);
 542   EXPECT_SET_NEEDS_FULL_TREE_SYNC(
 543       1, layer_tree_host_->SetRootLayer(test_layer));
 544   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetIsDrawable(true));
 545
 546   gfx::Size test_bounds = gfx::Size(501, 508);
 547
 548   gfx::Rect dirty1 = gfx::Rect(10, 15, 1, 2);
 549   gfx::Rect dirty2 = gfx::Rect(20, 25, 3, 4);
 550   gfx::Rect out_of_bounds_dirty_rect = gfx::Rect(400, 405, 500, 502);
 551
 552   // Before anything, test_layer should not be dirty.
 553   EXPECT_FALSE(test_layer->NeedsDisplayForTesting());
 554
 555   // This is just initialization, but SetNeedsCommit behavior is verified anyway
 556   // to avoid warnings.
 557   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetBounds(test_bounds));
 558   EXPECT_FALSE(test_layer->NeedsDisplayForTesting());
 559
 560   // The real test begins here.
 561   test_layer->ResetNeedsDisplayForTesting();
 562   EXPECT_FALSE(test_layer->NeedsDisplayForTesting());
 563
 564   // Case 1: Layer should accept dirty rects that go beyond its bounds.
 565   test_layer->ResetNeedsDisplayForTesting();
 566   EXPECT_FALSE(test_layer->NeedsDisplayForTesting());
 567   EXPECT_SET_NEEDS_UPDATE(
 568       1, test_layer->SetNeedsDisplayRect(out_of_bounds_dirty_rect));
 569   EXPECT_TRUE(test_layer->NeedsDisplayForTesting());
 570   test_layer->ResetNeedsDisplayForTesting();
 571
 572   // Case 2: SetNeedsDisplay() without the dirty rect arg.
 573   test_layer->ResetNeedsDisplayForTesting();
 574   EXPECT_FALSE(test_layer->NeedsDisplayForTesting());
 575   EXPECT_SET_NEEDS_UPDATE(1, test_layer->SetNeedsDisplay());
 576   EXPECT_TRUE(test_layer->NeedsDisplayForTesting());
 577   test_layer->ResetNeedsDisplayForTesting();
 578
 579   // Case 3: SetNeedsDisplay() with an empty rect.
 580   test_layer->ResetNeedsDisplayForTesting();
 581   EXPECT_FALSE(test_layer->NeedsDisplayForTesting());
 582   EXPECT_SET_NEEDS_COMMIT(0, test_layer->SetNeedsDisplayRect(gfx::Rect()));
 583   EXPECT_FALSE(test_layer->NeedsDisplayForTesting());
 584
 585   // Case 4: SetNeedsDisplay() with a non-drawable layer
 586   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetIsDrawable(false));
 587   test_layer->ResetNeedsDisplayForTesting();
 588   EXPECT_FALSE(test_layer->NeedsDisplayForTesting());
 589   EXPECT_SET_NEEDS_UPDATE(0, test_layer->SetNeedsDisplayRect(dirty1));
 590   EXPECT_TRUE(test_layer->NeedsDisplayForTesting());
 591 }
 592
 593 TEST_F(LayerTest, CheckPropertyChangeCausesCorrectBehavior) {
 594   scoped_refptr<Layer> test_layer = Layer::Create(layer_settings_);
 595   EXPECT_SET_NEEDS_FULL_TREE_SYNC(
 596       1, layer_tree_host_->SetRootLayer(test_layer));
 597   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetIsDrawable(true));
 598
 599   scoped_refptr<Layer> dummy_layer1 = Layer::Create(layer_settings_);
 600   scoped_refptr<Layer> dummy_layer2 = Layer::Create(layer_settings_);
 601
 602   // sanity check of initial test condition
 603   EXPECT_FALSE(test_layer->NeedsDisplayForTesting());
 604
 605   // Next, test properties that should call SetNeedsCommit (but not
 606   // SetNeedsDisplay). All properties need to be set to new values in order for
 607   // SetNeedsCommit to be called.
 608   EXPECT_SET_NEEDS_COMMIT(
 609       1, test_layer->SetTransformOrigin(gfx::Point3F(1.23f, 4.56f, 0.f)));
 610   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetBackgroundColor(SK_ColorLTGRAY));
 611   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetMasksToBounds(true));
 612   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetOpacity(0.5f));
 613   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetBlendMode(SkXfermode::kHue_Mode));
 614   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetIsRootForIsolatedGroup(true));
 615   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetContentsOpaque(true));
 616   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetPosition(gfx::PointF(4.f, 9.f)));
 617   // We can use any layer pointer here since we aren't syncing for real.
 618   EXPECT_SET_NEEDS_COMMIT(1,
 619                           test_layer->SetScrollClipLayerId(test_layer->id()));
 620   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetUserScrollable(true, false));
 621   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetScrollOffset(
 622       gfx::ScrollOffset(10, 10)));
 623   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetShouldScrollOnMainThread(true));
 624   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetNonFastScrollableRegion(
 625       Region(gfx::Rect(1, 1, 2, 2))));
 626   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetHaveWheelEventHandlers(true));
 627   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetHaveScrollEventHandlers(true));
 628   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetTransform(
 629       gfx::Transform(0.0, 0.0, 0.0, 0.0, 0.0, 0.0)));
 630   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetDoubleSided(false));
 631   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetTouchEventHandlerRegion(
 632       gfx::Rect(10, 10)));
 633   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetForceRenderSurface(true));
 634   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetHideLayerAndSubtree(true));
 635
 636   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, test_layer->SetMaskLayer(
 637       dummy_layer1.get()));
 638   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1, test_layer->SetReplicaLayer(
 639       dummy_layer2.get()));
 640
 641   // The above tests should not have caused a change to the needs_display flag.
 642   EXPECT_FALSE(test_layer->NeedsDisplayForTesting());
 643
 644   // As layers are removed from the tree, they will cause a tree sync.
 645   EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times((AnyNumber()));
 646 }
 647
 648 TEST_F(LayerTest, PushPropertiesAccumulatesUpdateRect) {
 649   scoped_refptr<Layer> test_layer = Layer::Create(layer_settings_);
 650   scoped_ptr<LayerImpl> impl_layer =
 651       LayerImpl::Create(host_impl_.active_tree(), 1);
 652
 653   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1,
 654                                   layer_tree_host_->SetRootLayer(test_layer));
 655
 656   test_layer->SetNeedsDisplayRect(gfx::Rect(5, 5));
 657   test_layer->PushPropertiesTo(impl_layer.get());
 658   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0.f, 0.f, 5.f, 5.f),
 659                        impl_layer->update_rect());
 660
 661   // The LayerImpl's update_rect() should be accumulated here, since we did not
 662   // do anything to clear it.
 663   test_layer->SetNeedsDisplayRect(gfx::Rect(10, 10, 5, 5));
 664   test_layer->PushPropertiesTo(impl_layer.get());
 665   EXPECT_FLOAT_RECT_EQ(gfx::RectF(0.f, 0.f, 15.f, 15.f),
 666                        impl_layer->update_rect());
 667
 668   // If we do clear the LayerImpl side, then the next update_rect() should be
 669   // fresh without accumulation.
 670   impl_layer->ResetAllChangeTrackingForSubtree();
 671   test_layer->SetNeedsDisplayRect(gfx::Rect(10, 10, 5, 5));
 672   test_layer->PushPropertiesTo(impl_layer.get());
 673   EXPECT_FLOAT_RECT_EQ(gfx::RectF(10.f, 10.f, 5.f, 5.f),
 674                        impl_layer->update_rect());
 675 }
 676
 677 TEST_F(LayerTest, PushPropertiesCausesLayerPropertyChangedForTransform) {
 678   scoped_refptr<Layer> test_layer = Layer::Create(layer_settings_);
 679   scoped_ptr<LayerImpl> impl_layer =
 680       LayerImpl::Create(host_impl_.active_tree(), 1);
 681
 682   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1,
 683                                   layer_tree_host_->SetRootLayer(test_layer));
 684
 685   gfx::Transform transform;
 686   transform.Rotate(45.0);
 687   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetTransform(transform));
 688
 689   EXPECT_FALSE(impl_layer->LayerPropertyChanged());
 690
 691   test_layer->PushPropertiesTo(impl_layer.get());
 692
 693   EXPECT_TRUE(impl_layer->LayerPropertyChanged());
 694 }
 695
 696 TEST_F(LayerTest, PushPropertiesCausesLayerPropertyChangedForOpacity) {
 697   scoped_refptr<Layer> test_layer = Layer::Create(layer_settings_);
 698   scoped_ptr<LayerImpl> impl_layer =
 699       LayerImpl::Create(host_impl_.active_tree(), 1);
 700
 701   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1,
 702                                   layer_tree_host_->SetRootLayer(test_layer));
 703
 704   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetOpacity(0.5f));
 705
 706   EXPECT_FALSE(impl_layer->LayerPropertyChanged());
 707
 708   test_layer->PushPropertiesTo(impl_layer.get());
 709
 710   EXPECT_TRUE(impl_layer->LayerPropertyChanged());
 711 }
 712
 713 TEST_F(LayerTest,
 714        PushPropsDoesntCauseLayerPropertyChangedDuringImplOnlyTransformAnim) {
 715   scoped_refptr<Layer> test_layer = Layer::Create(layer_settings_);
 716   scoped_ptr<LayerImpl> impl_layer =
 717       LayerImpl::Create(host_impl_.active_tree(), 1);
 718
 719   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1,
 720                                   layer_tree_host_->SetRootLayer(test_layer));
 721
 722   scoped_ptr<AnimationRegistrar> registrar = AnimationRegistrar::Create();
 723   impl_layer->layer_animation_controller()->SetAnimationRegistrar(
 724       registrar.get());
 725
 726   AddAnimatedTransformToController(impl_layer->layer_animation_controller(),
 727                                    1.0,
 728                                    0,
 729                                    100);
 730
 731   gfx::Transform transform;
 732   transform.Rotate(45.0);
 733   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetTransform(transform));
 734
 735   EXPECT_FALSE(impl_layer->LayerPropertyChanged());
 736   test_layer->PushPropertiesTo(impl_layer.get());
 737   EXPECT_TRUE(impl_layer->LayerPropertyChanged());
 738
 739   impl_layer->ResetAllChangeTrackingForSubtree();
 740   AddAnimatedTransformToController(impl_layer->layer_animation_controller(),
 741                                    1.0,
 742                                    0,
 743                                    100);
 744   impl_layer->layer_animation_controller()
 745       ->GetAnimation(Animation::TRANSFORM)
 746       ->set_is_impl_only(true);
 747   transform.Rotate(45.0);
 748   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetTransform(transform));
 749
 750   EXPECT_FALSE(impl_layer->LayerPropertyChanged());
 751   test_layer->PushPropertiesTo(impl_layer.get());
 752   EXPECT_FALSE(impl_layer->LayerPropertyChanged());
 753 }
 754
 755 TEST_F(LayerTest,
 756        PushPropsDoesntCauseLayerPropertyChangedDuringImplOnlyOpacityAnim) {
 757   scoped_refptr<Layer> test_layer = Layer::Create(layer_settings_);
 758   scoped_ptr<LayerImpl> impl_layer =
 759       LayerImpl::Create(host_impl_.active_tree(), 1);
 760
 761   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1,
 762                                   layer_tree_host_->SetRootLayer(test_layer));
 763
 764   scoped_ptr<AnimationRegistrar> registrar = AnimationRegistrar::Create();
 765   impl_layer->layer_animation_controller()->SetAnimationRegistrar(
 766       registrar.get());
 767
 768   AddOpacityTransitionToController(impl_layer->layer_animation_controller(),
 769                                    1.0,
 770                                    0.3f,
 771                                    0.7f,
 772                                    false);
 773
 774   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetOpacity(0.5f));
 775
 776   EXPECT_FALSE(impl_layer->LayerPropertyChanged());
 777   test_layer->PushPropertiesTo(impl_layer.get());
 778   EXPECT_TRUE(impl_layer->LayerPropertyChanged());
 779
 780   impl_layer->ResetAllChangeTrackingForSubtree();
 781   AddOpacityTransitionToController(impl_layer->layer_animation_controller(),
 782                                    1.0,
 783                                    0.3f,
 784                                    0.7f,
 785                                    false);
 786   impl_layer->layer_animation_controller()
 787       ->GetAnimation(Animation::OPACITY)
 788       ->set_is_impl_only(true);
 789   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetOpacity(0.75f));
 790
 791   EXPECT_FALSE(impl_layer->LayerPropertyChanged());
 792   test_layer->PushPropertiesTo(impl_layer.get());
 793   EXPECT_FALSE(impl_layer->LayerPropertyChanged());
 794 }
 795
 796 TEST_F(LayerTest,
 797        PushPropsDoesntCauseLayerPropertyChangedDuringImplOnlyFilterAnim) {
 798   scoped_refptr<Layer> test_layer = Layer::Create(layer_settings_);
 799   scoped_ptr<LayerImpl> impl_layer =
 800       LayerImpl::Create(host_impl_.active_tree(), 1);
 801
 802   EXPECT_SET_NEEDS_FULL_TREE_SYNC(1,
 803                                   layer_tree_host_->SetRootLayer(test_layer));
 804
 805   scoped_ptr<AnimationRegistrar> registrar = AnimationRegistrar::Create();
 806   impl_layer->layer_animation_controller()->SetAnimationRegistrar(
 807       registrar.get());
 808
 809   AddAnimatedFilterToController(
 810       impl_layer->layer_animation_controller(), 1.0, 1.f, 2.f);
 811
 812   FilterOperations filters;
 813   filters.Append(FilterOperation::CreateBlurFilter(2.f));
 814   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetFilters(filters));
 815
 816   EXPECT_FALSE(impl_layer->LayerPropertyChanged());
 817   test_layer->PushPropertiesTo(impl_layer.get());
 818   EXPECT_TRUE(impl_layer->LayerPropertyChanged());
 819
 820   impl_layer->ResetAllChangeTrackingForSubtree();
 821   AddAnimatedFilterToController(
 822       impl_layer->layer_animation_controller(), 1.0, 1.f, 2.f);
 823   impl_layer->layer_animation_controller()
 824       ->GetAnimation(Animation::FILTER)
 825       ->set_is_impl_only(true);
 826   filters.Append(FilterOperation::CreateSepiaFilter(0.5f));
 827   EXPECT_SET_NEEDS_COMMIT(1, test_layer->SetFilters(filters));
 828
 829   EXPECT_FALSE(impl_layer->LayerPropertyChanged());
 830   test_layer->PushPropertiesTo(impl_layer.get());
 831   EXPECT_FALSE(impl_layer->LayerPropertyChanged());
 832 }
 833
 834 TEST_F(LayerTest, MaskAndReplicaHasParent) {
 835   scoped_refptr<Layer> parent = Layer::Create(layer_settings_);
 836   scoped_refptr<Layer> child = Layer::Create(layer_settings_);
 837   scoped_refptr<Layer> mask = Layer::Create(layer_settings_);
 838   scoped_refptr<Layer> replica = Layer::Create(layer_settings_);
 839   scoped_refptr<Layer> replica_mask = Layer::Create(layer_settings_);
 840   scoped_refptr<Layer> mask_replacement = Layer::Create(layer_settings_);
 841   scoped_refptr<Layer> replica_replacement = Layer::Create(layer_settings_);
 842   scoped_refptr<Layer> replica_mask_replacement =
 843       Layer::Create(layer_settings_);
 844
 845   parent->AddChild(child);
 846   child->SetMaskLayer(mask.get());
 847   child->SetReplicaLayer(replica.get());
 848   replica->SetMaskLayer(replica_mask.get());
 849
 850   EXPECT_EQ(parent.get(), child->parent());
 851   EXPECT_EQ(child.get(), mask->parent());
 852   EXPECT_EQ(child.get(), replica->parent());
 853   EXPECT_EQ(replica.get(), replica_mask->parent());
 854
 855   replica->SetMaskLayer(replica_mask_replacement.get());
 856   EXPECT_EQ(nullptr, replica_mask->parent());
 857   EXPECT_EQ(replica.get(), replica_mask_replacement->parent());
 858
 859   child->SetMaskLayer(mask_replacement.get());
 860   EXPECT_EQ(nullptr, mask->parent());
 861   EXPECT_EQ(child.get(), mask_replacement->parent());
 862
 863   child->SetReplicaLayer(replica_replacement.get());
 864   EXPECT_EQ(nullptr, replica->parent());
 865   EXPECT_EQ(child.get(), replica_replacement->parent());
 866
 867   EXPECT_EQ(replica.get(), replica->mask_layer()->parent());
 868 }
 869
 870 TEST_F(LayerTest, CheckTranformIsInvertible) {
 871   scoped_refptr<Layer> layer = Layer::Create(layer_settings_);
 872   scoped_ptr<LayerImpl> impl_layer =
 873       LayerImpl::Create(host_impl_.active_tree(), 1);
 874   EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times(1);
 875   EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(AnyNumber());
 876   layer_tree_host_->SetRootLayer(layer);
 877
 878   EXPECT_TRUE(layer->transform_is_invertible());
 879
 880   gfx::Transform singular_transform;
 881   singular_transform.Scale3d(
 882       SkDoubleToMScalar(1.0), SkDoubleToMScalar(1.0), SkDoubleToMScalar(0.0));
 883
 884   layer->SetTransform(singular_transform);
 885   layer->PushPropertiesTo(impl_layer.get());
 886
 887   EXPECT_FALSE(layer->transform_is_invertible());
 888   EXPECT_FALSE(impl_layer->transform_is_invertible());
 889
 890   gfx::Transform rotation_transform;
 891   rotation_transform.RotateAboutZAxis(-45.0);
 892
 893   layer->SetTransform(rotation_transform);
 894   layer->PushPropertiesTo(impl_layer.get());
 895   EXPECT_TRUE(layer->transform_is_invertible());
 896   EXPECT_TRUE(impl_layer->transform_is_invertible());
 897
 898   Mock::VerifyAndClearExpectations(layer_tree_host_.get());
 899 }
 900
 901 TEST_F(LayerTest, TranformIsInvertibleAnimation) {
 902   scoped_refptr<Layer> layer = Layer::Create(layer_settings_);
 903   scoped_ptr<LayerImpl> impl_layer =
 904       LayerImpl::Create(host_impl_.active_tree(), 1);
 905   EXPECT_CALL(*layer_tree_host_, SetNeedsFullTreeSync()).Times(1);
 906   EXPECT_CALL(*layer_tree_host_, SetNeedsCommit()).Times(AnyNumber());
 907   layer_tree_host_->SetRootLayer(layer);
 908
 909   EXPECT_TRUE(layer->transform_is_invertible());
 910
 911   gfx::Transform singular_transform;
 912   singular_transform.Scale3d(
 913       SkDoubleToMScalar(1.0), SkDoubleToMScalar(1.0), SkDoubleToMScalar(0.0));
 914
 915   layer->SetTransform(singular_transform);
 916   layer->PushPropertiesTo(impl_layer.get());
 917
 918   EXPECT_FALSE(layer->transform_is_invertible());
 919   EXPECT_FALSE(impl_layer->transform_is_invertible());
 920
 921   gfx::Transform identity_transform;
 922
 923   layer->SetTransform(identity_transform);
 924   static_cast<LayerAnimationValueObserver*>(layer.get())
 925       ->OnTransformAnimated(singular_transform);
 926   layer->PushPropertiesTo(impl_layer.get());
 927   EXPECT_FALSE(layer->transform_is_invertible());
 928   EXPECT_FALSE(impl_layer->transform_is_invertible());
 929
 930   Mock::VerifyAndClearExpectations(layer_tree_host_.get());
 931 }
 932
 933 class LayerTreeHostFactory {
 934  public:
 935   LayerTreeHostFactory() : client_(FakeLayerTreeHostClient::DIRECT_3D) {}
 936
 937   scoped_ptr<LayerTreeHost> Create() { return Create(LayerTreeSettings()); }
 938
 939   scoped_ptr<LayerTreeHost> Create(LayerTreeSettings settings) {
 940     LayerTreeHost::InitParams params;
 941     params.client = &client_;
 942     params.shared_bitmap_manager = &shared_bitmap_manager_;
 943     params.task_graph_runner = &task_graph_runner_;
 944     params.gpu_memory_buffer_manager = &gpu_memory_buffer_manager_;
 945     params.settings = &settings;
 946     params.main_task_runner = base::ThreadTaskRunnerHandle::Get();
 947     return LayerTreeHost::CreateSingleThreaded(&client_, &params);
 948   }
 949
 950  private:
 951   FakeLayerTreeHostClient client_;
 952   TestSharedBitmapManager shared_bitmap_manager_;
 953   TestTaskGraphRunner task_graph_runner_;
 954   TestGpuMemoryBufferManager gpu_memory_buffer_manager_;
 955 };
 956
 957 void AssertLayerTreeHostMatchesForSubtree(Layer* layer, LayerTreeHost* host) {
 958   EXPECT_EQ(host, layer->layer_tree_host());
 959
 960   for (size_t i = 0; i < layer->children().size(); ++i)
 961     AssertLayerTreeHostMatchesForSubtree(layer->children()[i].get(), host);
 962
 963   if (layer->mask_layer())
 964     AssertLayerTreeHostMatchesForSubtree(layer->mask_layer(), host);
 965
 966   if (layer->replica_layer())
 967     AssertLayerTreeHostMatchesForSubtree(layer->replica_layer(), host);
 968 }
 969
 970 class LayerLayerTreeHostTest : public testing::Test {
 971  public:
 972  protected:
 973   LayerSettings layer_settings_;
 974 };
 975
 976 TEST_F(LayerLayerTreeHostTest, EnteringTree) {
 977   scoped_refptr<Layer> parent = Layer::Create(layer_settings_);
 978   scoped_refptr<Layer> child = Layer::Create(layer_settings_);
 979   scoped_refptr<Layer> mask = Layer::Create(layer_settings_);
 980   scoped_refptr<Layer> replica = Layer::Create(layer_settings_);
 981   scoped_refptr<Layer> replica_mask = Layer::Create(layer_settings_);
 982
 983   // Set up a detached tree of layers. The host pointer should be nil for these
 984   // layers.
 985   parent->AddChild(child);
 986   child->SetMaskLayer(mask.get());
 987   child->SetReplicaLayer(replica.get());
 988   replica->SetMaskLayer(replica_mask.get());
 989
 990   AssertLayerTreeHostMatchesForSubtree(parent.get(), nullptr);
 991
 992   LayerTreeHostFactory factory;
 993   scoped_ptr<LayerTreeHost> layer_tree_host = factory.Create();
 994   // Setting the root layer should set the host pointer for all layers in the
 995   // tree.
 996   layer_tree_host->SetRootLayer(parent.get());
 997
 998   AssertLayerTreeHostMatchesForSubtree(parent.get(), layer_tree_host.get());
 999
1000   // Clearing the root layer should also clear out the host pointers for all
1001   // layers in the tree.
1002   layer_tree_host->SetRootLayer(nullptr);
1003
1004   AssertLayerTreeHostMatchesForSubtree(parent.get(), nullptr);
1005 }
1006
1007 TEST_F(LayerLayerTreeHostTest, AddingLayerSubtree) {
1008   scoped_refptr<Layer> parent = Layer::Create(layer_settings_);
1009   LayerTreeHostFactory factory;
1010   scoped_ptr<LayerTreeHost> layer_tree_host = factory.Create();
1011
1012   layer_tree_host->SetRootLayer(parent.get());
1013
1014   EXPECT_EQ(parent->layer_tree_host(), layer_tree_host.get());
1015
1016   // Adding a subtree to a layer already associated with a host should set the
1017   // host pointer on all layers in that subtree.
1018   scoped_refptr<Layer> child = Layer::Create(layer_settings_);
1019   scoped_refptr<Layer> grand_child = Layer::Create(layer_settings_);
1020   child->AddChild(grand_child);
1021
1022   // Masks, replicas, and replica masks should pick up the new host too.
1023   scoped_refptr<Layer> child_mask = Layer::Create(layer_settings_);
1024   child->SetMaskLayer(child_mask.get());
1025   scoped_refptr<Layer> child_replica = Layer::Create(layer_settings_);
1026   child->SetReplicaLayer(child_replica.get());
1027   scoped_refptr<Layer> child_replica_mask = Layer::Create(layer_settings_);
1028   child_replica->SetMaskLayer(child_replica_mask.get());
1029
1030   parent->AddChild(child);
1031   AssertLayerTreeHostMatchesForSubtree(parent.get(), layer_tree_host.get());
1032
1033   layer_tree_host->SetRootLayer(nullptr);
1034 }
1035
1036 TEST_F(LayerLayerTreeHostTest, ChangeHost) {
1037   scoped_refptr<Layer> parent = Layer::Create(layer_settings_);
1038   scoped_refptr<Layer> child = Layer::Create(layer_settings_);
1039   scoped_refptr<Layer> mask = Layer::Create(layer_settings_);
1040   scoped_refptr<Layer> replica = Layer::Create(layer_settings_);
1041   scoped_refptr<Layer> replica_mask = Layer::Create(layer_settings_);
1042
1043   // Same setup as the previous test.
1044   parent->AddChild(child);
1045   child->SetMaskLayer(mask.get());
1046   child->SetReplicaLayer(replica.get());
1047   replica->SetMaskLayer(replica_mask.get());
1048
1049   LayerTreeHostFactory factory;
1050   scoped_ptr<LayerTreeHost> first_layer_tree_host = factory.Create();
1051   first_layer_tree_host->SetRootLayer(parent.get());
1052
1053   AssertLayerTreeHostMatchesForSubtree(parent.get(),
1054                                        first_layer_tree_host.get());
1055
1056   // Now re-root the tree to a new host (simulating what we do on a context lost
1057   // event). This should update the host pointers for all layers in the tree.
1058   scoped_ptr<LayerTreeHost> second_layer_tree_host = factory.Create();
1059   second_layer_tree_host->SetRootLayer(parent.get());
1060
1061   AssertLayerTreeHostMatchesForSubtree(parent.get(),
1062                                        second_layer_tree_host.get());
1063
1064   second_layer_tree_host->SetRootLayer(nullptr);
1065 }
1066
1067 TEST_F(LayerLayerTreeHostTest, ChangeHostInSubtree) {
1068   scoped_refptr<Layer> first_parent = Layer::Create(layer_settings_);
1069   scoped_refptr<Layer> first_child = Layer::Create(layer_settings_);
1070   scoped_refptr<Layer> second_parent = Layer::Create(layer_settings_);
1071   scoped_refptr<Layer> second_child = Layer::Create(layer_settings_);
1072   scoped_refptr<Layer> second_grand_child = Layer::Create(layer_settings_);
1073
1074   // First put all children under the first parent and set the first host.
1075   first_parent->AddChild(first_child);
1076   second_child->AddChild(second_grand_child);
1077   first_parent->AddChild(second_child);
1078
1079   LayerTreeHostFactory factory;
1080   scoped_ptr<LayerTreeHost> first_layer_tree_host = factory.Create();
1081   first_layer_tree_host->SetRootLayer(first_parent.get());
1082
1083   AssertLayerTreeHostMatchesForSubtree(first_parent.get(),
1084                                        first_layer_tree_host.get());
1085
1086   // Now reparent the subtree starting at second_child to a layer in a different
1087   // tree.
1088   scoped_ptr<LayerTreeHost> second_layer_tree_host = factory.Create();
1089   second_layer_tree_host->SetRootLayer(second_parent.get());
1090
1091   second_parent->AddChild(second_child);
1092
1093   // The moved layer and its children should point to the new host.
1094   EXPECT_EQ(second_layer_tree_host.get(), second_child->layer_tree_host());
1095   EXPECT_EQ(second_layer_tree_host.get(),
1096             second_grand_child->layer_tree_host());
1097
1098   // Test over, cleanup time.
1099   first_layer_tree_host->SetRootLayer(nullptr);
1100   second_layer_tree_host->SetRootLayer(nullptr);
1101 }
1102
1103 TEST_F(LayerLayerTreeHostTest, ReplaceMaskAndReplicaLayer) {
1104   scoped_refptr<Layer> parent = Layer::Create(layer_settings_);
1105   scoped_refptr<Layer> mask = Layer::Create(layer_settings_);
1106   scoped_refptr<Layer> replica = Layer::Create(layer_settings_);
1107   scoped_refptr<Layer> mask_child = Layer::Create(layer_settings_);
1108   scoped_refptr<Layer> replica_child = Layer::Create(layer_settings_);
1109   scoped_refptr<Layer> mask_replacement = Layer::Create(layer_settings_);
1110   scoped_refptr<Layer> replica_replacement = Layer::Create(layer_settings_);
1111
1112   parent->SetMaskLayer(mask.get());
1113   parent->SetReplicaLayer(replica.get());
1114   mask->AddChild(mask_child);
1115   replica->AddChild(replica_child);
1116
1117   LayerTreeHostFactory factory;
1118   scoped_ptr<LayerTreeHost> layer_tree_host = factory.Create();
1119   layer_tree_host->SetRootLayer(parent.get());
1120
1121   AssertLayerTreeHostMatchesForSubtree(parent.get(), layer_tree_host.get());
1122
1123   // Replacing the mask should clear out the old mask's subtree's host pointers.
1124   parent->SetMaskLayer(mask_replacement.get());
1125   EXPECT_EQ(nullptr, mask->layer_tree_host());
1126   EXPECT_EQ(nullptr, mask_child->layer_tree_host());
1127
1128   // Same for replacing a replica layer.
1129   parent->SetReplicaLayer(replica_replacement.get());
1130   EXPECT_EQ(nullptr, replica->layer_tree_host());
1131   EXPECT_EQ(nullptr, replica_child->layer_tree_host());
1132
1133   // Test over, cleanup time.
1134   layer_tree_host->SetRootLayer(nullptr);
1135 }
1136
1137 TEST_F(LayerLayerTreeHostTest, DestroyHostWithNonNullRootLayer) {
1138   scoped_refptr<Layer> root = Layer::Create(layer_settings_);
1139   scoped_refptr<Layer> child = Layer::Create(layer_settings_);
1140   root->AddChild(child);
1141   LayerTreeHostFactory factory;
1142   scoped_ptr<LayerTreeHost> layer_tree_host = factory.Create();
1143   layer_tree_host->SetRootLayer(root);
1144 }
1145
1146 static bool AddTestAnimation(Layer* layer) {
1147   scoped_ptr<KeyframedFloatAnimationCurve> curve =
1148       KeyframedFloatAnimationCurve::Create();
1149   curve->AddKeyframe(FloatKeyframe::Create(base::TimeDelta(), 0.3f, nullptr));
1150   curve->AddKeyframe(
1151       FloatKeyframe::Create(base::TimeDelta::FromSecondsD(1.0), 0.7f, nullptr));
1152   scoped_ptr<Animation> animation =
1153       Animation::Create(curve.Pass(), 0, 0, Animation::OPACITY);
1154
1155   return layer->AddAnimation(animation.Pass());
1156 }
1157
1158 TEST_F(LayerLayerTreeHostTest, ShouldNotAddAnimationWithoutAnimationRegistrar) {
1159   scoped_refptr<Layer> layer = Layer::Create(layer_settings_);
1160
1161   // Case 1: without a LayerTreeHost and without an AnimationRegistrar, the
1162   // animation should not be accepted.
1163   EXPECT_FALSE(AddTestAnimation(layer.get()));
1164
1165   scoped_ptr<AnimationRegistrar> registrar = AnimationRegistrar::Create();
1166   layer->RegisterForAnimations(registrar.get());
1167
1168   // Case 2: with an AnimationRegistrar, the animation should be accepted.
1169   EXPECT_TRUE(AddTestAnimation(layer.get()));
1170
1171   LayerTreeSettings settings;
1172   settings.accelerated_animation_enabled = false;
1173   LayerTreeHostFactory factory;
1174   scoped_ptr<LayerTreeHost> layer_tree_host = factory.Create(settings);
1175   layer_tree_host->SetRootLayer(layer);
1176   AssertLayerTreeHostMatchesForSubtree(layer.get(), layer_tree_host.get());
1177
1178   // Case 3: with a LayerTreeHost where accelerated animation is disabled, the
1179   // animation should be rejected.
1180   EXPECT_FALSE(AddTestAnimation(layer.get()));
1181 }
1182
1183 TEST_F(LayerTest, SafeOpaqueBackgroundColor) {
1184   LayerTreeHostFactory factory;
1185   scoped_ptr<LayerTreeHost> layer_tree_host = factory.Create();
1186
1187   scoped_refptr<Layer> layer = Layer::Create(layer_settings_);
1188   layer_tree_host->SetRootLayer(layer);
1189
1190   for (int contents_opaque = 0; contents_opaque < 2; ++contents_opaque) {
1191     for (int layer_opaque = 0; layer_opaque < 2; ++layer_opaque) {
1192       for (int host_opaque = 0; host_opaque < 2; ++host_opaque) {
1193         layer->SetContentsOpaque(!!contents_opaque);
1194         layer->SetBackgroundColor(layer_opaque ? SK_ColorRED
1195                                                : SK_ColorTRANSPARENT);
1196         layer_tree_host->set_background_color(
1197             host_opaque ? SK_ColorRED : SK_ColorTRANSPARENT);
1198
1199         SkColor safe_color = layer->SafeOpaqueBackgroundColor();
1200         if (contents_opaque) {
1201           EXPECT_EQ(SkColorGetA(safe_color), 255u)
1202               << "Flags: " << contents_opaque << ", " << layer_opaque << ", "
1203               << host_opaque << "\n";
1204         } else {
1205           EXPECT_NE(SkColorGetA(safe_color), 255u)
1206               << "Flags: " << contents_opaque << ", " << layer_opaque << ", "
1207               << host_opaque << "\n";
1208         }
1209       }
1210     }
1211   }
1212 }
1213
1214 class DrawsContentChangeLayer : public Layer {
1215  public:
1216   static scoped_refptr<DrawsContentChangeLayer> Create(
1217       const LayerSettings& settings) {
1218     return make_scoped_refptr(new DrawsContentChangeLayer(settings));
1219   }
1220
1221   void SetLayerTreeHost(LayerTreeHost* host) override {
1222     Layer::SetLayerTreeHost(host);
1223     SetFakeDrawsContent(!fake_draws_content_);
1224   }
1225
1226   bool HasDrawableContent() const override {
1227     return fake_draws_content_ && Layer::HasDrawableContent();
1228   }
1229
1230   void SetFakeDrawsContent(bool fake_draws_content) {
1231     fake_draws_content_ = fake_draws_content;
1232     UpdateDrawsContent(HasDrawableContent());
1233   }
1234
1235  private:
1236   explicit DrawsContentChangeLayer(const LayerSettings& settings)
1237       : Layer(settings), fake_draws_content_(false) {}
1238   ~DrawsContentChangeLayer() override {}
1239
1240   bool fake_draws_content_;
1241 };
1242
1243 TEST_F(LayerTest, DrawsContentChangedInSetLayerTreeHost) {
1244   scoped_refptr<Layer> root_layer = Layer::Create(layer_settings_);
1245   scoped_refptr<DrawsContentChangeLayer> becomes_not_draws_content =
1246       DrawsContentChangeLayer::Create(layer_settings_);
1247   scoped_refptr<DrawsContentChangeLayer> becomes_draws_content =
1248       DrawsContentChangeLayer::Create(layer_settings_);
1249   root_layer->SetIsDrawable(true);
1250   becomes_not_draws_content->SetIsDrawable(true);
1251   becomes_not_draws_content->SetFakeDrawsContent(true);
1252   EXPECT_EQ(0, root_layer->NumDescendantsThatDrawContent());
1253   root_layer->AddChild(becomes_not_draws_content);
1254   EXPECT_EQ(0, root_layer->NumDescendantsThatDrawContent());
1255
1256   becomes_draws_content->SetIsDrawable(true);
1257   root_layer->AddChild(becomes_draws_content);
1258   EXPECT_EQ(1, root_layer->NumDescendantsThatDrawContent());
1259 }
1260
1261 void ReceiveCopyOutputResult(int* result_count,
1262                              scoped_ptr<CopyOutputResult> result) {
1263   ++(*result_count);
1264 }
1265
1266 TEST_F(LayerTest, DedupesCopyOutputRequestsBySource) {
1267   scoped_refptr<Layer> layer = Layer::Create(layer_settings_);
1268   int result_count = 0;
1269
1270   // Create identical requests without the source being set, and expect the
1271   // layer does not abort either one.
1272   scoped_ptr<CopyOutputRequest> request = CopyOutputRequest::CreateRequest(
1273       base::Bind(&ReceiveCopyOutputResult, &result_count));
1274   layer->RequestCopyOfOutput(request.Pass());
1275   EXPECT_EQ(0, result_count);
1276   request = CopyOutputRequest::CreateRequest(
1277       base::Bind(&ReceiveCopyOutputResult, &result_count));
1278   layer->RequestCopyOfOutput(request.Pass());
1279   EXPECT_EQ(0, result_count);
1280
1281   // When the layer is destroyed, expect both requests to be aborted.
1282   layer = nullptr;
1283   EXPECT_EQ(2, result_count);
1284
1285   layer = Layer::Create(layer_settings_);
1286   result_count = 0;
1287
1288   // Create identical requests, but this time the source is being set.  Expect
1289   // the first request from |this| source aborts immediately when the second
1290   // request from |this| source is made.
1291   int did_receive_first_result_from_this_source = 0;
1292   request = CopyOutputRequest::CreateRequest(base::Bind(
1293       &ReceiveCopyOutputResult, &did_receive_first_result_from_this_source));
1294   request->set_source(this);
1295   layer->RequestCopyOfOutput(request.Pass());
1296   EXPECT_EQ(0, did_receive_first_result_from_this_source);
1297   // Make a request from a different source.
1298   int did_receive_result_from_different_source = 0;
1299   request = CopyOutputRequest::CreateRequest(base::Bind(
1300       &ReceiveCopyOutputResult, &did_receive_result_from_different_source));
1301   request->set_source(reinterpret_cast<void*>(0xdeadbee0));
1302   layer->RequestCopyOfOutput(request.Pass());
1303   EXPECT_EQ(0, did_receive_result_from_different_source);
1304   // Make a request without specifying the source.
1305   int did_receive_result_from_anonymous_source = 0;
1306   request = CopyOutputRequest::CreateRequest(base::Bind(
1307       &ReceiveCopyOutputResult, &did_receive_result_from_anonymous_source));
1308   layer->RequestCopyOfOutput(request.Pass());
1309   EXPECT_EQ(0, did_receive_result_from_anonymous_source);
1310   // Make the second request from |this| source.
1311   int did_receive_second_result_from_this_source = 0;
1312   request = CopyOutputRequest::CreateRequest(base::Bind(
1313       &ReceiveCopyOutputResult, &did_receive_second_result_from_this_source));
1314   request->set_source(this);
1315   layer->RequestCopyOfOutput(request.Pass());  // First request to be aborted.
1316   EXPECT_EQ(1, did_receive_first_result_from_this_source);
1317   EXPECT_EQ(0, did_receive_result_from_different_source);
1318   EXPECT_EQ(0, did_receive_result_from_anonymous_source);
1319   EXPECT_EQ(0, did_receive_second_result_from_this_source);
1320
1321   // When the layer is destroyed, the other three requests should be aborted.
1322   layer = nullptr;
1323   EXPECT_EQ(1, did_receive_first_result_from_this_source);
1324   EXPECT_EQ(1, did_receive_result_from_different_source);
1325   EXPECT_EQ(1, did_receive_result_from_anonymous_source);
1326   EXPECT_EQ(1, did_receive_second_result_from_this_source);
1327 }
1328
1329 }  // namespace
1330 }  // namespace cc