ui/compositor/layer_unittest.cc

   1 // Copyright (c) 2012 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 "base/basictypes.h"
   6 #include "base/bind.h"
   7 #include "base/compiler_specific.h"
   8 #include "base/debug/trace_event.h"
   9 #include "base/files/file_path.h"
  10 #include "base/files/file_util.h"
  11 #include "base/json/json_reader.h"
  12 #include "base/memory/scoped_ptr.h"
  13 #include "base/message_loop/message_loop.h"
  14 #include "base/path_service.h"
  15 #include "base/strings/string_util.h"
  16 #include "base/strings/stringprintf.h"
  17 #include "cc/layers/delegated_frame_provider.h"
  18 #include "cc/layers/delegated_frame_resource_collection.h"
  19 #include "cc/layers/layer.h"
  20 #include "cc/output/copy_output_request.h"
  21 #include "cc/output/copy_output_result.h"
  22 #include "cc/output/delegated_frame_data.h"
  23 #include "cc/test/pixel_test_utils.h"
  24 #include "testing/gtest/include/gtest/gtest.h"
  25 #include "ui/compositor/compositor_observer.h"
  26 #include "ui/compositor/dip_util.h"
  27 #include "ui/compositor/layer.h"
  28 #include "ui/compositor/layer_animation_sequence.h"
  29 #include "ui/compositor/layer_animator.h"
  30 #include "ui/compositor/test/context_factories_for_test.h"
  31 #include "ui/compositor/test/draw_waiter_for_test.h"
  32 #include "ui/compositor/test/test_compositor_host.h"
  33 #include "ui/compositor/test/test_layers.h"
  34 #include "ui/gfx/canvas.h"
  35 #include "ui/gfx/codec/png_codec.h"
  36 #include "ui/gfx/gfx_paths.h"
  37 #include "ui/gfx/skia_util.h"
  38
  39 using cc::MatchesPNGFile;
  40
  41 namespace ui {
  42
  43 namespace {
  44
  45 // There are three test classes in here that configure the Compositor and
  46 // Layer's slightly differently:
  47 // - LayerWithNullDelegateTest uses NullLayerDelegate as the LayerDelegate. This
  48 //   is typically the base class you want to use.
  49 // - LayerWithDelegateTest uses LayerDelegate on the delegates.
  50 // - LayerWithRealCompositorTest when a real compositor is required for testing.
  51 //    - Slow because they bring up a window and run the real compositor. This
  52 //      is typically not what you want.
  53
  54 class ColoredLayer : public Layer, public LayerDelegate {
  55  public:
  56   explicit ColoredLayer(SkColor color)
  57       : Layer(LAYER_TEXTURED),
  58         color_(color) {
  59     set_delegate(this);
  60   }
  61
  62   virtual ~ColoredLayer() { }
  63
  64   // Overridden from LayerDelegate:
  65   virtual void OnPaintLayer(gfx::Canvas* canvas) override {
  66     canvas->DrawColor(color_);
  67   }
  68
  69   virtual void OnDelegatedFrameDamage(
  70       const gfx::Rect& damage_rect_in_dip) override {}
  71
  72   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) override {
  73   }
  74
  75   virtual base::Closure PrepareForLayerBoundsChange() override {
  76     return base::Closure();
  77   }
  78
  79  private:
  80   SkColor color_;
  81 };
  82
  83 class LayerWithRealCompositorTest : public testing::Test {
  84  public:
  85   LayerWithRealCompositorTest() {
  86     if (PathService::Get(gfx::DIR_TEST_DATA, &test_data_directory_)) {
  87       test_data_directory_ = test_data_directory_.AppendASCII("compositor");
  88     } else {
  89       LOG(ERROR) << "Could not open test data directory.";
  90     }
  91   }
  92   virtual ~LayerWithRealCompositorTest() {}
  93
  94   // Overridden from testing::Test:
  95   virtual void SetUp() override {
  96     bool enable_pixel_output = true;
  97     ui::ContextFactory* context_factory =
  98         InitializeContextFactoryForTests(enable_pixel_output);
  99
 100     const gfx::Rect host_bounds(10, 10, 500, 500);
 101     compositor_host_.reset(
 102         TestCompositorHost::Create(host_bounds, context_factory));
 103     compositor_host_->Show();
 104   }
 105
 106   virtual void TearDown() override {
 107     compositor_host_.reset();
 108     TerminateContextFactoryForTests();
 109   }
 110
 111   Compositor* GetCompositor() { return compositor_host_->GetCompositor(); }
 112
 113   Layer* CreateLayer(LayerType type) {
 114     return new Layer(type);
 115   }
 116
 117   Layer* CreateColorLayer(SkColor color, const gfx::Rect& bounds) {
 118     Layer* layer = new ColoredLayer(color);
 119     layer->SetBounds(bounds);
 120     return layer;
 121   }
 122
 123   Layer* CreateNoTextureLayer(const gfx::Rect& bounds) {
 124     Layer* layer = CreateLayer(LAYER_NOT_DRAWN);
 125     layer->SetBounds(bounds);
 126     return layer;
 127   }
 128
 129   void DrawTree(Layer* root) {
 130     GetCompositor()->SetRootLayer(root);
 131     GetCompositor()->ScheduleDraw();
 132     WaitForDraw();
 133   }
 134
 135   void ReadPixels(SkBitmap* bitmap) {
 136     ReadPixels(bitmap, gfx::Rect(GetCompositor()->size()));
 137   }
 138
 139   void ReadPixels(SkBitmap* bitmap, gfx::Rect source_rect) {
 140     scoped_refptr<ReadbackHolder> holder(new ReadbackHolder);
 141     scoped_ptr<cc::CopyOutputRequest> request =
 142         cc::CopyOutputRequest::CreateBitmapRequest(
 143             base::Bind(&ReadbackHolder::OutputRequestCallback, holder));
 144     request->set_area(source_rect);
 145
 146     GetCompositor()->root_layer()->RequestCopyOfOutput(request.Pass());
 147
 148     // Wait for copy response.  This needs to wait as the compositor could
 149     // be in the middle of a draw right now, and the commit with the
 150     // copy output request may not be done on the first draw.
 151     for (int i = 0; i < 2; i++) {
 152       GetCompositor()->ScheduleDraw();
 153       WaitForDraw();
 154     }
 155
 156     // Waits for the callback to finish run and return result.
 157     holder->WaitForReadback();
 158
 159     *bitmap = holder->result();
 160   }
 161
 162   void WaitForDraw() { ui::DrawWaiterForTest::Wait(GetCompositor()); }
 163
 164   void WaitForCommit() {
 165     ui::DrawWaiterForTest::WaitForCommit(GetCompositor());
 166   }
 167
 168   // Invalidates the entire contents of the layer.
 169   void SchedulePaintForLayer(Layer* layer) {
 170     layer->SchedulePaint(
 171         gfx::Rect(0, 0, layer->bounds().width(), layer->bounds().height()));
 172   }
 173
 174   const base::FilePath& test_data_directory() const {
 175     return test_data_directory_;
 176   }
 177
 178  private:
 179   class ReadbackHolder : public base::RefCountedThreadSafe<ReadbackHolder> {
 180    public:
 181     ReadbackHolder() : run_loop_(new base::RunLoop) {}
 182
 183     void OutputRequestCallback(scoped_ptr<cc::CopyOutputResult> result) {
 184       result_ = result->TakeBitmap();
 185       run_loop_->Quit();
 186     }
 187
 188     void WaitForReadback() { run_loop_->Run(); }
 189
 190     const SkBitmap& result() const { return *result_; }
 191
 192    private:
 193     friend class base::RefCountedThreadSafe<ReadbackHolder>;
 194
 195     virtual ~ReadbackHolder() {}
 196
 197     scoped_ptr<SkBitmap> result_;
 198     scoped_ptr<base::RunLoop> run_loop_;
 199   };
 200
 201   scoped_ptr<TestCompositorHost> compositor_host_;
 202
 203   // The root directory for test files.
 204   base::FilePath test_data_directory_;
 205
 206   DISALLOW_COPY_AND_ASSIGN(LayerWithRealCompositorTest);
 207 };
 208
 209 // LayerDelegate that paints colors to the layer.
 210 class TestLayerDelegate : public LayerDelegate {
 211  public:
 212   explicit TestLayerDelegate() { reset(); }
 213   virtual ~TestLayerDelegate() {}
 214
 215   void AddColor(SkColor color) {
 216     colors_.push_back(color);
 217   }
 218
 219   const gfx::Size& paint_size() const { return paint_size_; }
 220   int color_index() const { return color_index_; }
 221
 222   std::string ToScaleString() const {
 223     return base::StringPrintf("%.1f %.1f", scale_x_, scale_y_);
 224   }
 225
 226   float device_scale_factor() const {
 227     return device_scale_factor_;
 228   }
 229
 230   // Overridden from LayerDelegate:
 231   virtual void OnPaintLayer(gfx::Canvas* canvas) override {
 232     SkISize size = canvas->sk_canvas()->getBaseLayerSize();
 233     paint_size_ = gfx::Size(size.width(), size.height());
 234     canvas->DrawColor(colors_[color_index_]);
 235     color_index_ = (color_index_ + 1) % static_cast<int>(colors_.size());
 236     const SkMatrix& matrix = canvas->sk_canvas()->getTotalMatrix();
 237     scale_x_ = matrix.getScaleX();
 238     scale_y_ = matrix.getScaleY();
 239   }
 240
 241   virtual void OnDelegatedFrameDamage(
 242       const gfx::Rect& damage_rect_in_dip) override {}
 243
 244   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) override {
 245     device_scale_factor_ = device_scale_factor;
 246   }
 247
 248   virtual base::Closure PrepareForLayerBoundsChange() override {
 249     return base::Closure();
 250   }
 251
 252   void reset() {
 253     color_index_ = 0;
 254     paint_size_.SetSize(0, 0);
 255     scale_x_ = scale_y_ = 0.0f;
 256     device_scale_factor_ = 0.0f;
 257   }
 258
 259  private:
 260   std::vector<SkColor> colors_;
 261   int color_index_;
 262   gfx::Size paint_size_;
 263   float scale_x_;
 264   float scale_y_;
 265   float device_scale_factor_;
 266
 267   DISALLOW_COPY_AND_ASSIGN(TestLayerDelegate);
 268 };
 269
 270 // LayerDelegate that verifies that a layer was asked to update its canvas.
 271 class DrawTreeLayerDelegate : public LayerDelegate {
 272  public:
 273   DrawTreeLayerDelegate() : painted_(false) {}
 274   virtual ~DrawTreeLayerDelegate() {}
 275
 276   void Reset() {
 277     painted_ = false;
 278   }
 279
 280   bool painted() const { return painted_; }
 281
 282  private:
 283   // Overridden from LayerDelegate:
 284   virtual void OnPaintLayer(gfx::Canvas* canvas) override {
 285     painted_ = true;
 286     canvas->DrawColor(SK_ColorWHITE);
 287   }
 288   virtual void OnDelegatedFrameDamage(
 289       const gfx::Rect& damage_rect_in_dip) override {}
 290   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) override {
 291   }
 292   virtual base::Closure PrepareForLayerBoundsChange() override {
 293     return base::Closure();
 294   }
 295
 296   bool painted_;
 297
 298   DISALLOW_COPY_AND_ASSIGN(DrawTreeLayerDelegate);
 299 };
 300
 301 // The simplest possible layer delegate. Does nothing.
 302 class NullLayerDelegate : public LayerDelegate {
 303  public:
 304   NullLayerDelegate() {}
 305   virtual ~NullLayerDelegate() {}
 306
 307  private:
 308   // Overridden from LayerDelegate:
 309   virtual void OnPaintLayer(gfx::Canvas* canvas) override {}
 310   virtual void OnDelegatedFrameDamage(
 311       const gfx::Rect& damage_rect_in_dip) override {}
 312   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) override {}
 313   virtual base::Closure PrepareForLayerBoundsChange() override {
 314     return base::Closure();
 315   }
 316
 317   DISALLOW_COPY_AND_ASSIGN(NullLayerDelegate);
 318 };
 319
 320 // Remembers if it has been notified.
 321 class TestCompositorObserver : public CompositorObserver {
 322  public:
 323   TestCompositorObserver()
 324       : committed_(false), started_(false), ended_(false), aborted_(false) {}
 325
 326   bool committed() const { return committed_; }
 327   bool notified() const { return started_ && ended_; }
 328   bool aborted() const { return aborted_; }
 329
 330   void Reset() {
 331     committed_ = false;
 332     started_ = false;
 333     ended_ = false;
 334     aborted_ = false;
 335   }
 336
 337  private:
 338   virtual void OnCompositingDidCommit(Compositor* compositor) override {
 339     committed_ = true;
 340   }
 341
 342   virtual void OnCompositingStarted(Compositor* compositor,
 343                                     base::TimeTicks start_time) override {
 344     started_ = true;
 345   }
 346
 347   virtual void OnCompositingEnded(Compositor* compositor) override {
 348     ended_ = true;
 349   }
 350
 351   virtual void OnCompositingAborted(Compositor* compositor) override {
 352     aborted_ = true;
 353   }
 354
 355   virtual void OnCompositingLockStateChanged(Compositor* compositor) override {
 356   }
 357
 358   bool committed_;
 359   bool started_;
 360   bool ended_;
 361   bool aborted_;
 362
 363   DISALLOW_COPY_AND_ASSIGN(TestCompositorObserver);
 364 };
 365
 366 }  // namespace
 367
 368 TEST_F(LayerWithRealCompositorTest, Draw) {
 369   scoped_ptr<Layer> layer(CreateColorLayer(SK_ColorRED,
 370                                            gfx::Rect(20, 20, 50, 50)));
 371   DrawTree(layer.get());
 372 }
 373
 374 // Create this hierarchy:
 375 // L1 - red
 376 // +-- L2 - blue
 377 // |   +-- L3 - yellow
 378 // +-- L4 - magenta
 379 //
 380 TEST_F(LayerWithRealCompositorTest, Hierarchy) {
 381   scoped_ptr<Layer> l1(CreateColorLayer(SK_ColorRED,
 382                                         gfx::Rect(20, 20, 400, 400)));
 383   scoped_ptr<Layer> l2(CreateColorLayer(SK_ColorBLUE,
 384                                         gfx::Rect(10, 10, 350, 350)));
 385   scoped_ptr<Layer> l3(CreateColorLayer(SK_ColorYELLOW,
 386                                         gfx::Rect(5, 5, 25, 25)));
 387   scoped_ptr<Layer> l4(CreateColorLayer(SK_ColorMAGENTA,
 388                                         gfx::Rect(300, 300, 100, 100)));
 389
 390   l1->Add(l2.get());
 391   l1->Add(l4.get());
 392   l2->Add(l3.get());
 393
 394   DrawTree(l1.get());
 395 }
 396
 397 class LayerWithDelegateTest : public testing::Test {
 398  public:
 399   LayerWithDelegateTest() {}
 400   virtual ~LayerWithDelegateTest() {}
 401
 402   // Overridden from testing::Test:
 403   virtual void SetUp() override {
 404     bool enable_pixel_output = false;
 405     ui::ContextFactory* context_factory =
 406         InitializeContextFactoryForTests(enable_pixel_output);
 407
 408     const gfx::Rect host_bounds(1000, 1000);
 409     compositor_host_.reset(TestCompositorHost::Create(host_bounds,
 410                                                       context_factory));
 411     compositor_host_->Show();
 412   }
 413
 414   virtual void TearDown() override {
 415     compositor_host_.reset();
 416     TerminateContextFactoryForTests();
 417   }
 418
 419   Compositor* compositor() { return compositor_host_->GetCompositor(); }
 420
 421   virtual Layer* CreateLayer(LayerType type) {
 422     return new Layer(type);
 423   }
 424
 425   Layer* CreateColorLayer(SkColor color, const gfx::Rect& bounds) {
 426     Layer* layer = new ColoredLayer(color);
 427     layer->SetBounds(bounds);
 428     return layer;
 429   }
 430
 431   virtual Layer* CreateNoTextureLayer(const gfx::Rect& bounds) {
 432     Layer* layer = CreateLayer(LAYER_NOT_DRAWN);
 433     layer->SetBounds(bounds);
 434     return layer;
 435   }
 436
 437   void DrawTree(Layer* root) {
 438     compositor()->SetRootLayer(root);
 439     Draw();
 440   }
 441
 442   // Invalidates the entire contents of the layer.
 443   void SchedulePaintForLayer(Layer* layer) {
 444     layer->SchedulePaint(
 445         gfx::Rect(0, 0, layer->bounds().width(), layer->bounds().height()));
 446   }
 447
 448   // Invokes DrawTree on the compositor.
 449   void Draw() {
 450     compositor()->ScheduleDraw();
 451     WaitForDraw();
 452   }
 453
 454   void WaitForDraw() { DrawWaiterForTest::Wait(compositor()); }
 455
 456   void WaitForCommit() {
 457     DrawWaiterForTest::WaitForCommit(compositor());
 458   }
 459
 460  private:
 461   scoped_ptr<TestCompositorHost> compositor_host_;
 462
 463   DISALLOW_COPY_AND_ASSIGN(LayerWithDelegateTest);
 464 };
 465
 466 // L1
 467 //  +-- L2
 468 TEST_F(LayerWithDelegateTest, ConvertPointToLayer_Simple) {
 469   scoped_ptr<Layer> l1(CreateColorLayer(SK_ColorRED,
 470                                         gfx::Rect(20, 20, 400, 400)));
 471   scoped_ptr<Layer> l2(CreateColorLayer(SK_ColorBLUE,
 472                                         gfx::Rect(10, 10, 350, 350)));
 473   l1->Add(l2.get());
 474   DrawTree(l1.get());
 475
 476   gfx::Point point1_in_l2_coords(5, 5);
 477   Layer::ConvertPointToLayer(l2.get(), l1.get(), &point1_in_l2_coords);
 478   gfx::Point point1_in_l1_coords(15, 15);
 479   EXPECT_EQ(point1_in_l1_coords, point1_in_l2_coords);
 480
 481   gfx::Point point2_in_l1_coords(5, 5);
 482   Layer::ConvertPointToLayer(l1.get(), l2.get(), &point2_in_l1_coords);
 483   gfx::Point point2_in_l2_coords(-5, -5);
 484   EXPECT_EQ(point2_in_l2_coords, point2_in_l1_coords);
 485 }
 486
 487 // L1
 488 //  +-- L2
 489 //       +-- L3
 490 TEST_F(LayerWithDelegateTest, ConvertPointToLayer_Medium) {
 491   scoped_ptr<Layer> l1(CreateColorLayer(SK_ColorRED,
 492                                         gfx::Rect(20, 20, 400, 400)));
 493   scoped_ptr<Layer> l2(CreateColorLayer(SK_ColorBLUE,
 494                                         gfx::Rect(10, 10, 350, 350)));
 495   scoped_ptr<Layer> l3(CreateColorLayer(SK_ColorYELLOW,
 496                                         gfx::Rect(10, 10, 100, 100)));
 497   l1->Add(l2.get());
 498   l2->Add(l3.get());
 499   DrawTree(l1.get());
 500
 501   gfx::Point point1_in_l3_coords(5, 5);
 502   Layer::ConvertPointToLayer(l3.get(), l1.get(), &point1_in_l3_coords);
 503   gfx::Point point1_in_l1_coords(25, 25);
 504   EXPECT_EQ(point1_in_l1_coords, point1_in_l3_coords);
 505
 506   gfx::Point point2_in_l1_coords(5, 5);
 507   Layer::ConvertPointToLayer(l1.get(), l3.get(), &point2_in_l1_coords);
 508   gfx::Point point2_in_l3_coords(-15, -15);
 509   EXPECT_EQ(point2_in_l3_coords, point2_in_l1_coords);
 510 }
 511
 512 TEST_F(LayerWithRealCompositorTest, Delegate) {
 513   scoped_ptr<Layer> l1(CreateColorLayer(SK_ColorBLACK,
 514                                         gfx::Rect(20, 20, 400, 400)));
 515   GetCompositor()->SetRootLayer(l1.get());
 516   WaitForDraw();
 517
 518   TestLayerDelegate delegate;
 519   l1->set_delegate(&delegate);
 520   delegate.AddColor(SK_ColorWHITE);
 521   delegate.AddColor(SK_ColorYELLOW);
 522   delegate.AddColor(SK_ColorGREEN);
 523
 524   l1->SchedulePaint(gfx::Rect(0, 0, 400, 400));
 525   WaitForDraw();
 526
 527   EXPECT_EQ(delegate.color_index(), 1);
 528   EXPECT_EQ(delegate.paint_size(), l1->bounds().size());
 529
 530   l1->SchedulePaint(gfx::Rect(10, 10, 200, 200));
 531   WaitForDraw();
 532   EXPECT_EQ(delegate.color_index(), 2);
 533   EXPECT_EQ(delegate.paint_size(), gfx::Size(200, 200));
 534
 535   l1->SchedulePaint(gfx::Rect(5, 5, 50, 50));
 536   WaitForDraw();
 537   EXPECT_EQ(delegate.color_index(), 0);
 538   EXPECT_EQ(delegate.paint_size(), gfx::Size(50, 50));
 539 }
 540
 541 TEST_F(LayerWithRealCompositorTest, DrawTree) {
 542   scoped_ptr<Layer> l1(CreateColorLayer(SK_ColorRED,
 543                                         gfx::Rect(20, 20, 400, 400)));
 544   scoped_ptr<Layer> l2(CreateColorLayer(SK_ColorBLUE,
 545                                         gfx::Rect(10, 10, 350, 350)));
 546   scoped_ptr<Layer> l3(CreateColorLayer(SK_ColorYELLOW,
 547                                         gfx::Rect(10, 10, 100, 100)));
 548   l1->Add(l2.get());
 549   l2->Add(l3.get());
 550
 551   GetCompositor()->SetRootLayer(l1.get());
 552   WaitForDraw();
 553
 554   DrawTreeLayerDelegate d1;
 555   l1->set_delegate(&d1);
 556   DrawTreeLayerDelegate d2;
 557   l2->set_delegate(&d2);
 558   DrawTreeLayerDelegate d3;
 559   l3->set_delegate(&d3);
 560
 561   l2->SchedulePaint(gfx::Rect(5, 5, 5, 5));
 562   WaitForDraw();
 563   EXPECT_FALSE(d1.painted());
 564   EXPECT_TRUE(d2.painted());
 565   EXPECT_FALSE(d3.painted());
 566 }
 567
 568 // Tests no-texture Layers.
 569 // Create this hierarchy:
 570 // L1 - red
 571 // +-- L2 - NO TEXTURE
 572 // |   +-- L3 - yellow
 573 // +-- L4 - magenta
 574 //
 575 TEST_F(LayerWithRealCompositorTest, HierarchyNoTexture) {
 576   scoped_ptr<Layer> l1(CreateColorLayer(SK_ColorRED,
 577                                         gfx::Rect(20, 20, 400, 400)));
 578   scoped_ptr<Layer> l2(CreateNoTextureLayer(gfx::Rect(10, 10, 350, 350)));
 579   scoped_ptr<Layer> l3(CreateColorLayer(SK_ColorYELLOW,
 580                                         gfx::Rect(5, 5, 25, 25)));
 581   scoped_ptr<Layer> l4(CreateColorLayer(SK_ColorMAGENTA,
 582                                         gfx::Rect(300, 300, 100, 100)));
 583
 584   l1->Add(l2.get());
 585   l1->Add(l4.get());
 586   l2->Add(l3.get());
 587
 588   GetCompositor()->SetRootLayer(l1.get());
 589   WaitForDraw();
 590
 591   DrawTreeLayerDelegate d2;
 592   l2->set_delegate(&d2);
 593   DrawTreeLayerDelegate d3;
 594   l3->set_delegate(&d3);
 595
 596   l2->SchedulePaint(gfx::Rect(5, 5, 5, 5));
 597   l3->SchedulePaint(gfx::Rect(5, 5, 5, 5));
 598   WaitForDraw();
 599
 600   // |d2| should not have received a paint notification since it has no texture.
 601   EXPECT_FALSE(d2.painted());
 602   // |d3| should have received a paint notification.
 603   EXPECT_TRUE(d3.painted());
 604 }
 605
 606 class LayerWithNullDelegateTest : public LayerWithDelegateTest {
 607  public:
 608   LayerWithNullDelegateTest() {}
 609   virtual ~LayerWithNullDelegateTest() {}
 610
 611   virtual void SetUp() override {
 612     LayerWithDelegateTest::SetUp();
 613     default_layer_delegate_.reset(new NullLayerDelegate());
 614   }
 615
 616   virtual Layer* CreateLayer(LayerType type) override {
 617     Layer* layer = new Layer(type);
 618     layer->set_delegate(default_layer_delegate_.get());
 619     return layer;
 620   }
 621
 622   Layer* CreateTextureRootLayer(const gfx::Rect& bounds) {
 623     Layer* layer = CreateTextureLayer(bounds);
 624     compositor()->SetRootLayer(layer);
 625     return layer;
 626   }
 627
 628   Layer* CreateTextureLayer(const gfx::Rect& bounds) {
 629     Layer* layer = CreateLayer(LAYER_TEXTURED);
 630     layer->SetBounds(bounds);
 631     return layer;
 632   }
 633
 634   virtual Layer* CreateNoTextureLayer(const gfx::Rect& bounds) override {
 635     Layer* layer = CreateLayer(LAYER_NOT_DRAWN);
 636     layer->SetBounds(bounds);
 637     return layer;
 638   }
 639
 640  private:
 641   scoped_ptr<NullLayerDelegate> default_layer_delegate_;
 642
 643   DISALLOW_COPY_AND_ASSIGN(LayerWithNullDelegateTest);
 644 };
 645
 646 TEST_F(LayerWithNullDelegateTest, EscapedDebugNames) {
 647   scoped_ptr<Layer> layer(CreateLayer(LAYER_NOT_DRAWN));
 648   std::string name = "\"\'\\/\b\f\n\r\t\n";
 649   layer->set_name(name);
 650   scoped_refptr<base::debug::ConvertableToTraceFormat> debug_info =
 651     layer->TakeDebugInfo();
 652   EXPECT_TRUE(!!debug_info.get());
 653   std::string json;
 654   debug_info->AppendAsTraceFormat(&json);
 655   base::JSONReader json_reader;
 656   scoped_ptr<base::Value> debug_info_value(json_reader.ReadToValue(json));
 657   EXPECT_TRUE(!!debug_info_value);
 658   EXPECT_TRUE(debug_info_value->IsType(base::Value::TYPE_DICTIONARY));
 659   base::DictionaryValue* dictionary = 0;
 660   EXPECT_TRUE(debug_info_value->GetAsDictionary(&dictionary));
 661   std::string roundtrip;
 662   EXPECT_TRUE(dictionary->GetString("layer_name", &roundtrip));
 663   EXPECT_EQ(name, roundtrip);
 664 }
 665
 666 void ReturnMailbox(bool* run, uint32 sync_point, bool is_lost) {
 667   *run = true;
 668 }
 669
 670 TEST_F(LayerWithNullDelegateTest, SwitchLayerPreservesCCLayerState) {
 671   scoped_ptr<Layer> l1(CreateLayer(LAYER_SOLID_COLOR));
 672   l1->SetFillsBoundsOpaquely(true);
 673   l1->SetForceRenderSurface(true);
 674   l1->SetVisible(false);
 675
 676   EXPECT_EQ(gfx::Point3F(), l1->cc_layer()->transform_origin());
 677   EXPECT_TRUE(l1->cc_layer()->DrawsContent());
 678   EXPECT_TRUE(l1->cc_layer()->contents_opaque());
 679   EXPECT_TRUE(l1->cc_layer()->force_render_surface());
 680   EXPECT_TRUE(l1->cc_layer()->hide_layer_and_subtree());
 681
 682   cc::Layer* before_layer = l1->cc_layer();
 683
 684   bool callback1_run = false;
 685   cc::TextureMailbox mailbox(gpu::Mailbox::Generate(), 0, 0);
 686   l1->SetTextureMailbox(mailbox,
 687                         cc::SingleReleaseCallback::Create(
 688                             base::Bind(ReturnMailbox, &callback1_run)),
 689                         gfx::Size(1, 1));
 690
 691   EXPECT_NE(before_layer, l1->cc_layer());
 692
 693   EXPECT_EQ(gfx::Point3F(), l1->cc_layer()->transform_origin());
 694   EXPECT_TRUE(l1->cc_layer()->DrawsContent());
 695   EXPECT_TRUE(l1->cc_layer()->contents_opaque());
 696   EXPECT_TRUE(l1->cc_layer()->force_render_surface());
 697   EXPECT_TRUE(l1->cc_layer()->hide_layer_and_subtree());
 698   EXPECT_FALSE(callback1_run);
 699
 700   bool callback2_run = false;
 701   mailbox = cc::TextureMailbox(gpu::Mailbox::Generate(), 0, 0);
 702   l1->SetTextureMailbox(mailbox,
 703                         cc::SingleReleaseCallback::Create(
 704                             base::Bind(ReturnMailbox, &callback2_run)),
 705                         gfx::Size(1, 1));
 706   EXPECT_TRUE(callback1_run);
 707   EXPECT_FALSE(callback2_run);
 708
 709   l1->SetShowSolidColorContent();
 710   EXPECT_EQ(gfx::Point3F(), l1->cc_layer()->transform_origin());
 711   EXPECT_TRUE(l1->cc_layer()->DrawsContent());
 712   EXPECT_TRUE(l1->cc_layer()->contents_opaque());
 713   EXPECT_TRUE(l1->cc_layer()->force_render_surface());
 714   EXPECT_TRUE(l1->cc_layer()->hide_layer_and_subtree());
 715   EXPECT_TRUE(callback2_run);
 716 }
 717
 718 // Various visibile/drawn assertions.
 719 TEST_F(LayerWithNullDelegateTest, Visibility) {
 720   scoped_ptr<Layer> l1(new Layer(LAYER_TEXTURED));
 721   scoped_ptr<Layer> l2(new Layer(LAYER_TEXTURED));
 722   scoped_ptr<Layer> l3(new Layer(LAYER_TEXTURED));
 723   l1->Add(l2.get());
 724   l2->Add(l3.get());
 725
 726   NullLayerDelegate delegate;
 727   l1->set_delegate(&delegate);
 728   l2->set_delegate(&delegate);
 729   l3->set_delegate(&delegate);
 730
 731   // Layers should initially be drawn.
 732   EXPECT_TRUE(l1->IsDrawn());
 733   EXPECT_TRUE(l2->IsDrawn());
 734   EXPECT_TRUE(l3->IsDrawn());
 735   EXPECT_FALSE(l1->cc_layer()->hide_layer_and_subtree());
 736   EXPECT_FALSE(l2->cc_layer()->hide_layer_and_subtree());
 737   EXPECT_FALSE(l3->cc_layer()->hide_layer_and_subtree());
 738
 739   compositor()->SetRootLayer(l1.get());
 740
 741   Draw();
 742
 743   l1->SetVisible(false);
 744   EXPECT_FALSE(l1->IsDrawn());
 745   EXPECT_FALSE(l2->IsDrawn());
 746   EXPECT_FALSE(l3->IsDrawn());
 747   EXPECT_TRUE(l1->cc_layer()->hide_layer_and_subtree());
 748   EXPECT_FALSE(l2->cc_layer()->hide_layer_and_subtree());
 749   EXPECT_FALSE(l3->cc_layer()->hide_layer_and_subtree());
 750
 751   l3->SetVisible(false);
 752   EXPECT_FALSE(l1->IsDrawn());
 753   EXPECT_FALSE(l2->IsDrawn());
 754   EXPECT_FALSE(l3->IsDrawn());
 755   EXPECT_TRUE(l1->cc_layer()->hide_layer_and_subtree());
 756   EXPECT_FALSE(l2->cc_layer()->hide_layer_and_subtree());
 757   EXPECT_TRUE(l3->cc_layer()->hide_layer_and_subtree());
 758
 759   l1->SetVisible(true);
 760   EXPECT_TRUE(l1->IsDrawn());
 761   EXPECT_TRUE(l2->IsDrawn());
 762   EXPECT_FALSE(l3->IsDrawn());
 763   EXPECT_FALSE(l1->cc_layer()->hide_layer_and_subtree());
 764   EXPECT_FALSE(l2->cc_layer()->hide_layer_and_subtree());
 765   EXPECT_TRUE(l3->cc_layer()->hide_layer_and_subtree());
 766 }
 767
 768 // Checks that stacking-related methods behave as advertised.
 769 TEST_F(LayerWithNullDelegateTest, Stacking) {
 770   scoped_ptr<Layer> root(new Layer(LAYER_NOT_DRAWN));
 771   scoped_ptr<Layer> l1(new Layer(LAYER_TEXTURED));
 772   scoped_ptr<Layer> l2(new Layer(LAYER_TEXTURED));
 773   scoped_ptr<Layer> l3(new Layer(LAYER_TEXTURED));
 774   l1->set_name("1");
 775   l2->set_name("2");
 776   l3->set_name("3");
 777   root->Add(l3.get());
 778   root->Add(l2.get());
 779   root->Add(l1.get());
 780
 781   // Layers' children are stored in bottom-to-top order.
 782   EXPECT_EQ("3 2 1", test::ChildLayerNamesAsString(*root.get()));
 783
 784   root->StackAtTop(l3.get());
 785   EXPECT_EQ("2 1 3", test::ChildLayerNamesAsString(*root.get()));
 786
 787   root->StackAtTop(l1.get());
 788   EXPECT_EQ("2 3 1", test::ChildLayerNamesAsString(*root.get()));
 789
 790   root->StackAtTop(l1.get());
 791   EXPECT_EQ("2 3 1", test::ChildLayerNamesAsString(*root.get()));
 792
 793   root->StackAbove(l2.get(), l3.get());
 794   EXPECT_EQ("3 2 1", test::ChildLayerNamesAsString(*root.get()));
 795
 796   root->StackAbove(l1.get(), l3.get());
 797   EXPECT_EQ("3 1 2", test::ChildLayerNamesAsString(*root.get()));
 798
 799   root->StackAbove(l2.get(), l1.get());
 800   EXPECT_EQ("3 1 2", test::ChildLayerNamesAsString(*root.get()));
 801
 802   root->StackAtBottom(l2.get());
 803   EXPECT_EQ("2 3 1", test::ChildLayerNamesAsString(*root.get()));
 804
 805   root->StackAtBottom(l3.get());
 806   EXPECT_EQ("3 2 1", test::ChildLayerNamesAsString(*root.get()));
 807
 808   root->StackAtBottom(l3.get());
 809   EXPECT_EQ("3 2 1", test::ChildLayerNamesAsString(*root.get()));
 810
 811   root->StackBelow(l2.get(), l3.get());
 812   EXPECT_EQ("2 3 1", test::ChildLayerNamesAsString(*root.get()));
 813
 814   root->StackBelow(l1.get(), l3.get());
 815   EXPECT_EQ("2 1 3", test::ChildLayerNamesAsString(*root.get()));
 816
 817   root->StackBelow(l3.get(), l2.get());
 818   EXPECT_EQ("3 2 1", test::ChildLayerNamesAsString(*root.get()));
 819
 820   root->StackBelow(l3.get(), l2.get());
 821   EXPECT_EQ("3 2 1", test::ChildLayerNamesAsString(*root.get()));
 822
 823   root->StackBelow(l3.get(), l1.get());
 824   EXPECT_EQ("2 3 1", test::ChildLayerNamesAsString(*root.get()));
 825 }
 826
 827 // Verifies SetBounds triggers the appropriate painting/drawing.
 828 TEST_F(LayerWithNullDelegateTest, SetBoundsSchedulesPaint) {
 829   scoped_ptr<Layer> l1(CreateTextureLayer(gfx::Rect(0, 0, 200, 200)));
 830   compositor()->SetRootLayer(l1.get());
 831
 832   Draw();
 833
 834   l1->SetBounds(gfx::Rect(5, 5, 200, 200));
 835
 836   // The CompositorDelegate (us) should have been told to draw for a move.
 837   WaitForDraw();
 838
 839   l1->SetBounds(gfx::Rect(5, 5, 100, 100));
 840
 841   // The CompositorDelegate (us) should have been told to draw for a resize.
 842   WaitForDraw();
 843 }
 844
 845 void ExpectRgba(int x, int y, SkColor expected_color, SkColor actual_color) {
 846   EXPECT_EQ(expected_color, actual_color)
 847       << "Pixel error at x=" << x << " y=" << y << "; "
 848       << "actual RGBA=("
 849       << SkColorGetR(actual_color) << ","
 850       << SkColorGetG(actual_color) << ","
 851       << SkColorGetB(actual_color) << ","
 852       << SkColorGetA(actual_color) << "); "
 853       << "expected RGBA=("
 854       << SkColorGetR(expected_color) << ","
 855       << SkColorGetG(expected_color) << ","
 856       << SkColorGetB(expected_color) << ","
 857       << SkColorGetA(expected_color) << ")";
 858 }
 859
 860 // Checks that pixels are actually drawn to the screen with a read back.
 861 TEST_F(LayerWithRealCompositorTest, DrawPixels) {
 862   gfx::Size viewport_size = GetCompositor()->size();
 863
 864   // The window should be some non-trivial size but may not be exactly
 865   // 500x500 on all platforms/bots.
 866   EXPECT_GE(viewport_size.width(), 200);
 867   EXPECT_GE(viewport_size.height(), 200);
 868
 869   int blue_height = 10;
 870
 871   scoped_ptr<Layer> layer(
 872       CreateColorLayer(SK_ColorRED, gfx::Rect(viewport_size)));
 873   scoped_ptr<Layer> layer2(
 874       CreateColorLayer(SK_ColorBLUE,
 875                        gfx::Rect(0, 0, viewport_size.width(), blue_height)));
 876
 877   layer->Add(layer2.get());
 878
 879   DrawTree(layer.get());
 880
 881   SkBitmap bitmap;
 882   ReadPixels(&bitmap, gfx::Rect(viewport_size));
 883   ASSERT_FALSE(bitmap.empty());
 884
 885   SkAutoLockPixels lock(bitmap);
 886   for (int x = 0; x < viewport_size.width(); x++) {
 887     for (int y = 0; y < viewport_size.height(); y++) {
 888       SkColor actual_color = bitmap.getColor(x, y);
 889       SkColor expected_color = y < blue_height ? SK_ColorBLUE : SK_ColorRED;
 890       ExpectRgba(x, y, expected_color, actual_color);
 891     }
 892   }
 893 }
 894
 895 // Checks that drawing a layer with transparent pixels is blended correctly
 896 // with the lower layer.
 897 TEST_F(LayerWithRealCompositorTest, DrawAlphaBlendedPixels) {
 898   gfx::Size viewport_size = GetCompositor()->size();
 899
 900   int test_size = 200;
 901   EXPECT_GE(viewport_size.width(), test_size);
 902   EXPECT_GE(viewport_size.height(), test_size);
 903
 904   // Blue with a wee bit of transparency.
 905   SkColor blue_with_alpha = SkColorSetARGBInline(40, 10, 20, 200);
 906   SkColor blend_color = SkColorSetARGBInline(255, 216, 3, 32);
 907
 908   scoped_ptr<Layer> background_layer(
 909       CreateColorLayer(SK_ColorRED, gfx::Rect(viewport_size)));
 910   scoped_ptr<Layer> foreground_layer(
 911       CreateColorLayer(blue_with_alpha, gfx::Rect(viewport_size)));
 912
 913   // This must be set to false for layers with alpha to be blended correctly.
 914   foreground_layer->SetFillsBoundsOpaquely(false);
 915
 916   background_layer->Add(foreground_layer.get());
 917   DrawTree(background_layer.get());
 918
 919   SkBitmap bitmap;
 920   ReadPixels(&bitmap, gfx::Rect(viewport_size));
 921   ASSERT_FALSE(bitmap.empty());
 922
 923   SkAutoLockPixels lock(bitmap);
 924   for (int x = 0; x < test_size; x++) {
 925     for (int y = 0; y < test_size; y++) {
 926       SkColor actual_color = bitmap.getColor(x, y);
 927       ExpectRgba(x, y, blend_color, actual_color);
 928     }
 929   }
 930 }
 931
 932 // Checks that using the AlphaShape filter applied to a layer with
 933 // transparency, alpha-blends properly with the layer below.
 934 TEST_F(LayerWithRealCompositorTest, DrawAlphaThresholdFilterPixels) {
 935   gfx::Size viewport_size = GetCompositor()->size();
 936
 937   int test_size = 200;
 938   EXPECT_GE(viewport_size.width(), test_size);
 939   EXPECT_GE(viewport_size.height(), test_size);
 940
 941   int blue_height = 10;
 942   SkColor blue_with_alpha = SkColorSetARGBInline(40, 0, 0, 255);
 943   SkColor blend_color = SkColorSetARGBInline(255, 215, 0, 40);
 944
 945   scoped_ptr<Layer> background_layer(
 946       CreateColorLayer(SK_ColorRED, gfx::Rect(viewport_size)));
 947   scoped_ptr<Layer> foreground_layer(
 948       CreateColorLayer(blue_with_alpha, gfx::Rect(viewport_size)));
 949
 950   // Add a shape to restrict the visible part of the layer.
 951   SkRegion shape;
 952   shape.setRect(0, 0, viewport_size.width(), blue_height);
 953   foreground_layer->SetAlphaShape(make_scoped_ptr(new SkRegion(shape)));
 954
 955   foreground_layer->SetFillsBoundsOpaquely(false);
 956
 957   background_layer->Add(foreground_layer.get());
 958   DrawTree(background_layer.get());
 959
 960   SkBitmap bitmap;
 961   ReadPixels(&bitmap, gfx::Rect(viewport_size));
 962   ASSERT_FALSE(bitmap.empty());
 963
 964   SkAutoLockPixels lock(bitmap);
 965   for (int x = 0; x < test_size; x++) {
 966     for (int y = 0; y < test_size; y++) {
 967       SkColor actual_color = bitmap.getColor(x, y);
 968       ExpectRgba(x, y, actual_color,
 969                  y < blue_height ? blend_color : SK_ColorRED);
 970     }
 971   }
 972 }
 973
 974 // Checks the logic around Compositor::SetRootLayer and Layer::SetCompositor.
 975 TEST_F(LayerWithRealCompositorTest, SetRootLayer) {
 976   Compositor* compositor = GetCompositor();
 977   scoped_ptr<Layer> l1(CreateColorLayer(SK_ColorRED,
 978                                         gfx::Rect(20, 20, 400, 400)));
 979   scoped_ptr<Layer> l2(CreateColorLayer(SK_ColorBLUE,
 980                                         gfx::Rect(10, 10, 350, 350)));
 981
 982   EXPECT_EQ(NULL, l1->GetCompositor());
 983   EXPECT_EQ(NULL, l2->GetCompositor());
 984
 985   compositor->SetRootLayer(l1.get());
 986   EXPECT_EQ(compositor, l1->GetCompositor());
 987
 988   l1->Add(l2.get());
 989   EXPECT_EQ(compositor, l2->GetCompositor());
 990
 991   l1->Remove(l2.get());
 992   EXPECT_EQ(NULL, l2->GetCompositor());
 993
 994   l1->Add(l2.get());
 995   EXPECT_EQ(compositor, l2->GetCompositor());
 996
 997   compositor->SetRootLayer(NULL);
 998   EXPECT_EQ(NULL, l1->GetCompositor());
 999   EXPECT_EQ(NULL, l2->GetCompositor());
1000 }
1001
1002 // Checks that compositor observers are notified when:
1003 // - DrawTree is called,
1004 // - After ScheduleDraw is called, or
1005 // - Whenever SetBounds, SetOpacity or SetTransform are called.
1006 // TODO(vollick): could be reorganized into compositor_unittest.cc
1007 TEST_F(LayerWithRealCompositorTest, CompositorObservers) {
1008   scoped_ptr<Layer> l1(CreateColorLayer(SK_ColorRED,
1009                                         gfx::Rect(20, 20, 400, 400)));
1010   scoped_ptr<Layer> l2(CreateColorLayer(SK_ColorBLUE,
1011                                         gfx::Rect(10, 10, 350, 350)));
1012   l1->Add(l2.get());
1013   TestCompositorObserver observer;
1014   GetCompositor()->AddObserver(&observer);
1015
1016   // Explicitly called DrawTree should cause the observers to be notified.
1017   // NOTE: this call to DrawTree sets l1 to be the compositor's root layer.
1018   DrawTree(l1.get());
1019   EXPECT_TRUE(observer.notified());
1020
1021   // ScheduleDraw without any visible change should cause a commit.
1022   observer.Reset();
1023   l1->ScheduleDraw();
1024   WaitForCommit();
1025   EXPECT_TRUE(observer.committed());
1026
1027   // Moving, but not resizing, a layer should alert the observers.
1028   observer.Reset();
1029   l2->SetBounds(gfx::Rect(0, 0, 350, 350));
1030   WaitForDraw();
1031   EXPECT_TRUE(observer.notified());
1032
1033   // So should resizing a layer.
1034   observer.Reset();
1035   l2->SetBounds(gfx::Rect(0, 0, 400, 400));
1036   WaitForDraw();
1037   EXPECT_TRUE(observer.notified());
1038
1039   // Opacity changes should alert the observers.
1040   observer.Reset();
1041   l2->SetOpacity(0.5f);
1042   WaitForDraw();
1043   EXPECT_TRUE(observer.notified());
1044
1045   // So should setting the opacity back.
1046   observer.Reset();
1047   l2->SetOpacity(1.0f);
1048   WaitForDraw();
1049   EXPECT_TRUE(observer.notified());
1050
1051   // Setting the transform of a layer should alert the observers.
1052   observer.Reset();
1053   gfx::Transform transform;
1054   transform.Translate(200.0, 200.0);
1055   transform.Rotate(90.0);
1056   transform.Translate(-200.0, -200.0);
1057   l2->SetTransform(transform);
1058   WaitForDraw();
1059   EXPECT_TRUE(observer.notified());
1060
1061   // A change resulting in an aborted swap buffer should alert the observer
1062   // and also signal an abort.
1063   observer.Reset();
1064   l2->SetOpacity(0.1f);
1065   GetCompositor()->DidAbortSwapBuffers();
1066   WaitForDraw();
1067   EXPECT_TRUE(observer.notified());
1068   EXPECT_TRUE(observer.aborted());
1069
1070   GetCompositor()->RemoveObserver(&observer);
1071
1072   // Opacity changes should no longer alert the removed observer.
1073   observer.Reset();
1074   l2->SetOpacity(0.5f);
1075   WaitForDraw();
1076
1077   EXPECT_FALSE(observer.notified());
1078 }
1079
1080 // Checks that modifying the hierarchy correctly affects final composite.
1081 TEST_F(LayerWithRealCompositorTest, ModifyHierarchy) {
1082   GetCompositor()->SetScaleAndSize(1.0f, gfx::Size(50, 50));
1083
1084   // l0
1085   //  +-l11
1086   //  | +-l21
1087   //  +-l12
1088   scoped_ptr<Layer> l0(CreateColorLayer(SK_ColorRED,
1089                                         gfx::Rect(0, 0, 50, 50)));
1090   scoped_ptr<Layer> l11(CreateColorLayer(SK_ColorGREEN,
1091                                          gfx::Rect(0, 0, 25, 25)));
1092   scoped_ptr<Layer> l21(CreateColorLayer(SK_ColorMAGENTA,
1093                                          gfx::Rect(0, 0, 15, 15)));
1094   scoped_ptr<Layer> l12(CreateColorLayer(SK_ColorBLUE,
1095                                          gfx::Rect(10, 10, 25, 25)));
1096
1097   base::FilePath ref_img1 =
1098       test_data_directory().AppendASCII("ModifyHierarchy1.png");
1099   base::FilePath ref_img2 =
1100       test_data_directory().AppendASCII("ModifyHierarchy2.png");
1101   SkBitmap bitmap;
1102
1103   l0->Add(l11.get());
1104   l11->Add(l21.get());
1105   l0->Add(l12.get());
1106   DrawTree(l0.get());
1107   ReadPixels(&bitmap);
1108   ASSERT_FALSE(bitmap.empty());
1109   // WritePNGFile(bitmap, ref_img1);
1110   EXPECT_TRUE(MatchesPNGFile(bitmap, ref_img1, cc::ExactPixelComparator(true)));
1111
1112   l0->StackAtTop(l11.get());
1113   DrawTree(l0.get());
1114   ReadPixels(&bitmap);
1115   ASSERT_FALSE(bitmap.empty());
1116   // WritePNGFile(bitmap, ref_img2);
1117   EXPECT_TRUE(MatchesPNGFile(bitmap, ref_img2, cc::ExactPixelComparator(true)));
1118
1119   // should restore to original configuration
1120   l0->StackAbove(l12.get(), l11.get());
1121   DrawTree(l0.get());
1122   ReadPixels(&bitmap);
1123   ASSERT_FALSE(bitmap.empty());
1124   EXPECT_TRUE(MatchesPNGFile(bitmap, ref_img1, cc::ExactPixelComparator(true)));
1125
1126   // l11 back to front
1127   l0->StackAtTop(l11.get());
1128   DrawTree(l0.get());
1129   ReadPixels(&bitmap);
1130   ASSERT_FALSE(bitmap.empty());
1131   EXPECT_TRUE(MatchesPNGFile(bitmap, ref_img2, cc::ExactPixelComparator(true)));
1132
1133   // should restore to original configuration
1134   l0->StackAbove(l12.get(), l11.get());
1135   DrawTree(l0.get());
1136   ReadPixels(&bitmap);
1137   ASSERT_FALSE(bitmap.empty());
1138   EXPECT_TRUE(MatchesPNGFile(bitmap, ref_img1, cc::ExactPixelComparator(true)));
1139
1140   // l11 back to front
1141   l0->StackAbove(l11.get(), l12.get());
1142   DrawTree(l0.get());
1143   ReadPixels(&bitmap);
1144   ASSERT_FALSE(bitmap.empty());
1145   EXPECT_TRUE(MatchesPNGFile(bitmap, ref_img2, cc::ExactPixelComparator(true)));
1146 }
1147
1148 // Opacity is rendered correctly.
1149 // Checks that modifying the hierarchy correctly affects final composite.
1150 TEST_F(LayerWithRealCompositorTest, Opacity) {
1151   GetCompositor()->SetScaleAndSize(1.0f, gfx::Size(50, 50));
1152
1153   // l0
1154   //  +-l11
1155   scoped_ptr<Layer> l0(CreateColorLayer(SK_ColorRED,
1156                                         gfx::Rect(0, 0, 50, 50)));
1157   scoped_ptr<Layer> l11(CreateColorLayer(SK_ColorGREEN,
1158                                          gfx::Rect(0, 0, 25, 25)));
1159
1160   base::FilePath ref_img = test_data_directory().AppendASCII("Opacity.png");
1161
1162   l11->SetOpacity(0.75);
1163   l0->Add(l11.get());
1164   DrawTree(l0.get());
1165   SkBitmap bitmap;
1166   ReadPixels(&bitmap);
1167   ASSERT_FALSE(bitmap.empty());
1168   // WritePNGFile(bitmap, ref_img);
1169   EXPECT_TRUE(MatchesPNGFile(bitmap, ref_img, cc::ExactPixelComparator(true)));
1170 }
1171
1172 namespace {
1173
1174 class SchedulePaintLayerDelegate : public LayerDelegate {
1175  public:
1176   SchedulePaintLayerDelegate() : paint_count_(0), layer_(NULL) {}
1177
1178   virtual ~SchedulePaintLayerDelegate() {}
1179
1180   void set_layer(Layer* layer) {
1181     layer_ = layer;
1182     layer_->set_delegate(this);
1183   }
1184
1185   void SetSchedulePaintRect(const gfx::Rect& rect) {
1186     schedule_paint_rect_ = rect;
1187   }
1188
1189   int GetPaintCountAndClear() {
1190     int value = paint_count_;
1191     paint_count_ = 0;
1192     return value;
1193   }
1194
1195   const gfx::RectF& last_clip_rect() const { return last_clip_rect_; }
1196
1197  private:
1198   // Overridden from LayerDelegate:
1199   virtual void OnPaintLayer(gfx::Canvas* canvas) override {
1200     paint_count_++;
1201     if (!schedule_paint_rect_.IsEmpty()) {
1202       layer_->SchedulePaint(schedule_paint_rect_);
1203       schedule_paint_rect_ = gfx::Rect();
1204     }
1205     SkRect sk_clip_rect;
1206     if (canvas->sk_canvas()->getClipBounds(&sk_clip_rect))
1207       last_clip_rect_ = gfx::SkRectToRectF(sk_clip_rect);
1208   }
1209
1210   virtual void OnDelegatedFrameDamage(
1211       const gfx::Rect& damage_rect_in_dip) override {}
1212
1213   virtual void OnDeviceScaleFactorChanged(float device_scale_factor) override {
1214   }
1215
1216   virtual base::Closure PrepareForLayerBoundsChange() override {
1217     return base::Closure();
1218   }
1219
1220   int paint_count_;
1221   Layer* layer_;
1222   gfx::Rect schedule_paint_rect_;
1223   gfx::RectF last_clip_rect_;
1224
1225   DISALLOW_COPY_AND_ASSIGN(SchedulePaintLayerDelegate);
1226 };
1227
1228 }  // namespace
1229
1230 // Verifies that if SchedulePaint is invoked during painting the layer is still
1231 // marked dirty.
1232 TEST_F(LayerWithDelegateTest, SchedulePaintFromOnPaintLayer) {
1233   scoped_ptr<Layer> root(CreateColorLayer(SK_ColorRED,
1234                                           gfx::Rect(0, 0, 500, 500)));
1235   SchedulePaintLayerDelegate child_delegate;
1236   scoped_ptr<Layer> child(CreateColorLayer(SK_ColorBLUE,
1237                                            gfx::Rect(0, 0, 200, 200)));
1238   child_delegate.set_layer(child.get());
1239
1240   root->Add(child.get());
1241
1242   SchedulePaintForLayer(root.get());
1243   DrawTree(root.get());
1244   child->SchedulePaint(gfx::Rect(0, 0, 20, 20));
1245   EXPECT_EQ(1, child_delegate.GetPaintCountAndClear());
1246
1247   // Set a rect so that when OnPaintLayer() is invoked SchedulePaint is invoked
1248   // again.
1249   child_delegate.SetSchedulePaintRect(gfx::Rect(10, 10, 30, 30));
1250   WaitForCommit();
1251   EXPECT_EQ(1, child_delegate.GetPaintCountAndClear());
1252
1253   // Because SchedulePaint() was invoked from OnPaintLayer() |child| should
1254   // still need to be painted.
1255   WaitForCommit();
1256   EXPECT_EQ(1, child_delegate.GetPaintCountAndClear());
1257   EXPECT_TRUE(child_delegate.last_clip_rect().Contains(
1258                   gfx::Rect(10, 10, 30, 30)));
1259 }
1260
1261 TEST_F(LayerWithRealCompositorTest, ScaleUpDown) {
1262   scoped_ptr<Layer> root(CreateColorLayer(SK_ColorWHITE,
1263                                           gfx::Rect(10, 20, 200, 220)));
1264   TestLayerDelegate root_delegate;
1265   root_delegate.AddColor(SK_ColorWHITE);
1266   root->set_delegate(&root_delegate);
1267
1268   scoped_ptr<Layer> l1(CreateColorLayer(SK_ColorWHITE,
1269                                         gfx::Rect(10, 20, 140, 180)));
1270   TestLayerDelegate l1_delegate;
1271   l1_delegate.AddColor(SK_ColorWHITE);
1272   l1->set_delegate(&l1_delegate);
1273
1274   GetCompositor()->SetScaleAndSize(1.0f, gfx::Size(500, 500));
1275   GetCompositor()->SetRootLayer(root.get());
1276   root->Add(l1.get());
1277   WaitForDraw();
1278
1279   EXPECT_EQ("10,20 200x220", root->bounds().ToString());
1280   EXPECT_EQ("10,20 140x180", l1->bounds().ToString());
1281   gfx::Size cc_bounds_size = root->cc_layer()->bounds();
1282   EXPECT_EQ("200x220", cc_bounds_size.ToString());
1283   cc_bounds_size = l1->cc_layer()->bounds();
1284   EXPECT_EQ("140x180", cc_bounds_size.ToString());
1285   // No scale change, so no scale notification.
1286   EXPECT_EQ(0.0f, root_delegate.device_scale_factor());
1287   EXPECT_EQ(0.0f, l1_delegate.device_scale_factor());
1288
1289   EXPECT_EQ("200x220", root_delegate.paint_size().ToString());
1290   EXPECT_EQ("140x180", l1_delegate.paint_size().ToString());
1291
1292   // Scale up to 2.0. Changing scale doesn't change the bounds in DIP.
1293   GetCompositor()->SetScaleAndSize(2.0f, gfx::Size(500, 500));
1294   EXPECT_EQ("10,20 200x220", root->bounds().ToString());
1295   EXPECT_EQ("10,20 140x180", l1->bounds().ToString());
1296   // CC layer should still match the UI layer bounds.
1297   cc_bounds_size = root->cc_layer()->bounds();
1298   EXPECT_EQ("200x220", cc_bounds_size.ToString());
1299   cc_bounds_size = l1->cc_layer()->bounds();
1300   EXPECT_EQ("140x180", cc_bounds_size.ToString());
1301   // New scale factor must have been notified.
1302   EXPECT_EQ(2.0f, root_delegate.device_scale_factor());
1303   EXPECT_EQ(2.0f, l1_delegate.device_scale_factor());
1304
1305   // Canvas size must have been scaled down up.
1306   WaitForDraw();
1307   EXPECT_EQ("400x440", root_delegate.paint_size().ToString());
1308   EXPECT_EQ("2.0 2.0", root_delegate.ToScaleString());
1309   EXPECT_EQ("280x360", l1_delegate.paint_size().ToString());
1310   EXPECT_EQ("2.0 2.0", l1_delegate.ToScaleString());
1311
1312   // Scale down back to 1.0f.
1313   GetCompositor()->SetScaleAndSize(1.0f, gfx::Size(500, 500));
1314   EXPECT_EQ("10,20 200x220", root->bounds().ToString());
1315   EXPECT_EQ("10,20 140x180", l1->bounds().ToString());
1316   // CC layer should still match the UI layer bounds.
1317   cc_bounds_size = root->cc_layer()->bounds();
1318   EXPECT_EQ("200x220", cc_bounds_size.ToString());
1319   cc_bounds_size = l1->cc_layer()->bounds();
1320   EXPECT_EQ("140x180", cc_bounds_size.ToString());
1321   // New scale factor must have been notified.
1322   EXPECT_EQ(1.0f, root_delegate.device_scale_factor());
1323   EXPECT_EQ(1.0f, l1_delegate.device_scale_factor());
1324
1325   // Canvas size must have been scaled down too.
1326   WaitForDraw();
1327   EXPECT_EQ("200x220", root_delegate.paint_size().ToString());
1328   EXPECT_EQ("1.0 1.0", root_delegate.ToScaleString());
1329   EXPECT_EQ("140x180", l1_delegate.paint_size().ToString());
1330   EXPECT_EQ("1.0 1.0", l1_delegate.ToScaleString());
1331
1332   root_delegate.reset();
1333   l1_delegate.reset();
1334   // Just changing the size shouldn't notify the scale change nor
1335   // trigger repaint.
1336   GetCompositor()->SetScaleAndSize(1.0f, gfx::Size(1000, 1000));
1337   // No scale change, so no scale notification.
1338   EXPECT_EQ(0.0f, root_delegate.device_scale_factor());
1339   EXPECT_EQ(0.0f, l1_delegate.device_scale_factor());
1340   WaitForDraw();
1341   EXPECT_EQ("0x0", root_delegate.paint_size().ToString());
1342   EXPECT_EQ("0.0 0.0", root_delegate.ToScaleString());
1343   EXPECT_EQ("0x0", l1_delegate.paint_size().ToString());
1344   EXPECT_EQ("0.0 0.0", l1_delegate.ToScaleString());
1345 }
1346
1347 TEST_F(LayerWithRealCompositorTest, ScaleReparent) {
1348   scoped_ptr<Layer> root(CreateColorLayer(SK_ColorWHITE,
1349                                           gfx::Rect(10, 20, 200, 220)));
1350   scoped_ptr<Layer> l1(CreateColorLayer(SK_ColorWHITE,
1351                                         gfx::Rect(10, 20, 140, 180)));
1352   TestLayerDelegate l1_delegate;
1353   l1_delegate.AddColor(SK_ColorWHITE);
1354   l1->set_delegate(&l1_delegate);
1355
1356   GetCompositor()->SetScaleAndSize(1.0f, gfx::Size(500, 500));
1357   GetCompositor()->SetRootLayer(root.get());
1358   WaitForDraw();
1359
1360   root->Add(l1.get());
1361   EXPECT_EQ("10,20 140x180", l1->bounds().ToString());
1362   gfx::Size cc_bounds_size = l1->cc_layer()->bounds();
1363   EXPECT_EQ("140x180", cc_bounds_size.ToString());
1364   EXPECT_EQ(0.0f, l1_delegate.device_scale_factor());
1365
1366   WaitForDraw();
1367   EXPECT_EQ("140x180", l1_delegate.paint_size().ToString());
1368   EXPECT_EQ("1.0 1.0", l1_delegate.ToScaleString());
1369
1370   // Remove l1 from root and change the scale.
1371   root->Remove(l1.get());
1372   EXPECT_EQ(NULL, l1->parent());
1373   EXPECT_EQ(NULL, l1->GetCompositor());
1374   GetCompositor()->SetScaleAndSize(2.0f, gfx::Size(500, 500));
1375   // Sanity check on root and l1.
1376   EXPECT_EQ("10,20 200x220", root->bounds().ToString());
1377   cc_bounds_size = l1->cc_layer()->bounds();
1378   EXPECT_EQ("140x180", cc_bounds_size.ToString());
1379
1380   root->Add(l1.get());
1381   EXPECT_EQ("10,20 140x180", l1->bounds().ToString());
1382   cc_bounds_size = l1->cc_layer()->bounds();
1383   EXPECT_EQ("140x180", cc_bounds_size.ToString());
1384   EXPECT_EQ(2.0f, l1_delegate.device_scale_factor());
1385   WaitForDraw();
1386   EXPECT_EQ("280x360", l1_delegate.paint_size().ToString());
1387   EXPECT_EQ("2.0 2.0", l1_delegate.ToScaleString());
1388 }
1389
1390 // Verifies that when changing bounds on a layer that is invisible, and then
1391 // made visible, the right thing happens:
1392 // - if just a move, then no painting should happen.
1393 // - if a resize, the layer should be repainted.
1394 TEST_F(LayerWithDelegateTest, SetBoundsWhenInvisible) {
1395   scoped_ptr<Layer> root(CreateNoTextureLayer(gfx::Rect(0, 0, 1000, 1000)));
1396
1397   scoped_ptr<Layer> child(CreateLayer(LAYER_TEXTURED));
1398   child->SetBounds(gfx::Rect(0, 0, 500, 500));
1399   DrawTreeLayerDelegate delegate;
1400   child->set_delegate(&delegate);
1401   root->Add(child.get());
1402
1403   // Paint once for initial damage.
1404   child->SetVisible(true);
1405   DrawTree(root.get());
1406
1407   // Reset into invisible state.
1408   child->SetVisible(false);
1409   DrawTree(root.get());
1410   delegate.Reset();
1411
1412   // Move layer.
1413   child->SetBounds(gfx::Rect(200, 200, 500, 500));
1414   child->SetVisible(true);
1415   DrawTree(root.get());
1416   EXPECT_FALSE(delegate.painted());
1417
1418   // Reset into invisible state.
1419   child->SetVisible(false);
1420   DrawTree(root.get());
1421   delegate.Reset();
1422
1423   // Resize layer.
1424   child->SetBounds(gfx::Rect(200, 200, 400, 400));
1425   child->SetVisible(true);
1426   DrawTree(root.get());
1427   EXPECT_TRUE(delegate.painted());
1428 }
1429
1430 static scoped_ptr<cc::DelegatedFrameData> MakeFrameData(gfx::Size size) {
1431   scoped_ptr<cc::DelegatedFrameData> frame_data(new cc::DelegatedFrameData);
1432   scoped_ptr<cc::RenderPass> render_pass(cc::RenderPass::Create());
1433   render_pass->SetNew(
1434       cc::RenderPassId(1, 1), gfx::Rect(size), gfx::Rect(), gfx::Transform());
1435   frame_data->render_pass_list.push_back(render_pass.Pass());
1436   return frame_data.Pass();
1437 }
1438
1439 TEST_F(LayerWithDelegateTest, DelegatedLayer) {
1440   scoped_ptr<Layer> root(CreateNoTextureLayer(gfx::Rect(0, 0, 1000, 1000)));
1441
1442   scoped_ptr<Layer> child(CreateLayer(LAYER_TEXTURED));
1443
1444   child->SetBounds(gfx::Rect(0, 0, 10, 10));
1445   child->SetVisible(true);
1446   root->Add(child.get());
1447   DrawTree(root.get());
1448
1449   scoped_refptr<cc::DelegatedFrameResourceCollection> resource_collection =
1450       new cc::DelegatedFrameResourceCollection;
1451   scoped_refptr<cc::DelegatedFrameProvider> frame_provider;
1452
1453   // Content matches layer size.
1454   frame_provider = new cc::DelegatedFrameProvider(
1455       resource_collection.get(), MakeFrameData(gfx::Size(10, 10)));
1456   child->SetShowDelegatedContent(frame_provider.get(), gfx::Size(10, 10));
1457   EXPECT_EQ(child->cc_layer()->bounds().ToString(),
1458             gfx::Size(10, 10).ToString());
1459
1460   // Content larger than layer.
1461   child->SetBounds(gfx::Rect(0, 0, 5, 5));
1462   EXPECT_EQ(child->cc_layer()->bounds().ToString(),
1463             gfx::Size(5, 5).ToString());
1464
1465   // Content smaller than layer.
1466   child->SetBounds(gfx::Rect(0, 0, 10, 10));
1467   frame_provider = new cc::DelegatedFrameProvider(
1468       resource_collection.get(), MakeFrameData(gfx::Size(5, 5)));
1469   child->SetShowDelegatedContent(frame_provider.get(), gfx::Size(5, 5));
1470   EXPECT_EQ(child->cc_layer()->bounds().ToString(), gfx::Size(5, 5).ToString());
1471
1472   // Hi-DPI content on low-DPI layer.
1473   frame_provider = new cc::DelegatedFrameProvider(
1474       resource_collection.get(), MakeFrameData(gfx::Size(20, 20)));
1475   child->SetShowDelegatedContent(frame_provider.get(), gfx::Size(10, 10));
1476   EXPECT_EQ(child->cc_layer()->bounds().ToString(),
1477             gfx::Size(10, 10).ToString());
1478
1479   // Hi-DPI content on hi-DPI layer.
1480   compositor()->SetScaleAndSize(2.f, gfx::Size(1000, 1000));
1481   EXPECT_EQ(child->cc_layer()->bounds().ToString(),
1482             gfx::Size(10, 10).ToString());
1483
1484   // Low-DPI content on hi-DPI layer.
1485   frame_provider = new cc::DelegatedFrameProvider(
1486       resource_collection.get(), MakeFrameData(gfx::Size(10, 10)));
1487   child->SetShowDelegatedContent(frame_provider.get(), gfx::Size(10, 10));
1488   EXPECT_EQ(child->cc_layer()->bounds().ToString(),
1489             gfx::Size(10, 10).ToString());
1490 }
1491
1492 TEST_F(LayerWithDelegateTest, ExternalContent) {
1493   scoped_ptr<Layer> root(CreateNoTextureLayer(gfx::Rect(0, 0, 1000, 1000)));
1494   scoped_ptr<Layer> child(CreateLayer(LAYER_SOLID_COLOR));
1495
1496   child->SetBounds(gfx::Rect(0, 0, 10, 10));
1497   child->SetVisible(true);
1498   root->Add(child.get());
1499
1500   // The layer is already showing solid color content, so the cc layer won't
1501   // change.
1502   scoped_refptr<cc::Layer> before = child->cc_layer();
1503   child->SetShowSolidColorContent();
1504   EXPECT_TRUE(child->cc_layer());
1505   EXPECT_EQ(before.get(), child->cc_layer());
1506
1507   scoped_refptr<cc::DelegatedFrameResourceCollection> resource_collection =
1508       new cc::DelegatedFrameResourceCollection;
1509   scoped_refptr<cc::DelegatedFrameProvider> frame_provider =
1510       new cc::DelegatedFrameProvider(resource_collection.get(),
1511                                      MakeFrameData(gfx::Size(10, 10)));
1512
1513   // Showing delegated content changes the underlying cc layer.
1514   before = child->cc_layer();
1515   child->SetShowDelegatedContent(frame_provider.get(), gfx::Size(10, 10));
1516   EXPECT_TRUE(child->cc_layer());
1517   EXPECT_NE(before.get(), child->cc_layer());
1518
1519   // Changing to painted content should change the underlying cc layer.
1520   before = child->cc_layer();
1521   child->SetShowSolidColorContent();
1522   EXPECT_TRUE(child->cc_layer());
1523   EXPECT_NE(before.get(), child->cc_layer());
1524 }
1525
1526 // Verifies that layer filters still attached after changing implementation
1527 // layer.
1528 TEST_F(LayerWithDelegateTest, LayerFiltersSurvival) {
1529   scoped_ptr<Layer> layer(CreateLayer(LAYER_TEXTURED));
1530   layer->SetBounds(gfx::Rect(0, 0, 10, 10));
1531   EXPECT_TRUE(layer->cc_layer());
1532   EXPECT_EQ(0u, layer->cc_layer()->filters().size());
1533
1534   layer->SetLayerGrayscale(0.5f);
1535   EXPECT_EQ(layer->layer_grayscale(), 0.5f);
1536   EXPECT_EQ(1u, layer->cc_layer()->filters().size());
1537
1538   scoped_refptr<cc::DelegatedFrameResourceCollection> resource_collection =
1539       new cc::DelegatedFrameResourceCollection;
1540   scoped_refptr<cc::DelegatedFrameProvider> frame_provider =
1541       new cc::DelegatedFrameProvider(resource_collection.get(),
1542                                      MakeFrameData(gfx::Size(10, 10)));
1543
1544   // Showing delegated content changes the underlying cc layer.
1545   scoped_refptr<cc::Layer> before = layer->cc_layer();
1546   layer->SetShowDelegatedContent(frame_provider.get(), gfx::Size(10, 10));
1547   EXPECT_EQ(layer->layer_grayscale(), 0.5f);
1548   EXPECT_TRUE(layer->cc_layer());
1549   EXPECT_NE(before.get(), layer->cc_layer());
1550   EXPECT_EQ(1u, layer->cc_layer()->filters().size());
1551 }
1552
1553 // Tests Layer::AddThreadedAnimation and Layer::RemoveThreadedAnimation.
1554 TEST_F(LayerWithRealCompositorTest, AddRemoveThreadedAnimations) {
1555   scoped_ptr<Layer> root(CreateLayer(LAYER_TEXTURED));
1556   scoped_ptr<Layer> l1(CreateLayer(LAYER_TEXTURED));
1557   scoped_ptr<Layer> l2(CreateLayer(LAYER_TEXTURED));
1558
1559   l1->SetAnimator(LayerAnimator::CreateImplicitAnimator());
1560   l2->SetAnimator(LayerAnimator::CreateImplicitAnimator());
1561
1562   EXPECT_FALSE(l1->HasPendingThreadedAnimations());
1563
1564   // Trigger a threaded animation.
1565   l1->SetOpacity(0.5f);
1566
1567   EXPECT_TRUE(l1->HasPendingThreadedAnimations());
1568
1569   // Ensure we can remove a pending threaded animation.
1570   l1->GetAnimator()->StopAnimating();
1571
1572   EXPECT_FALSE(l1->HasPendingThreadedAnimations());
1573
1574   // Trigger another threaded animation.
1575   l1->SetOpacity(0.2f);
1576
1577   EXPECT_TRUE(l1->HasPendingThreadedAnimations());
1578
1579   root->Add(l1.get());
1580   GetCompositor()->SetRootLayer(root.get());
1581
1582   // Now that l1 is part of a tree, it should have dispatched the pending
1583   // animation.
1584   EXPECT_FALSE(l1->HasPendingThreadedAnimations());
1585
1586   // Ensure that l1 no longer holds on to animations.
1587   l1->SetOpacity(0.1f);
1588   EXPECT_FALSE(l1->HasPendingThreadedAnimations());
1589
1590   // Ensure that adding a layer to an existing tree causes its pending
1591   // animations to get dispatched.
1592   l2->SetOpacity(0.5f);
1593   EXPECT_TRUE(l2->HasPendingThreadedAnimations());
1594
1595   l1->Add(l2.get());
1596   EXPECT_FALSE(l2->HasPendingThreadedAnimations());
1597 }
1598
1599 // Tests that in-progress threaded animations complete when a Layer's
1600 // cc::Layer changes.
1601 TEST_F(LayerWithRealCompositorTest, SwitchCCLayerAnimations) {
1602   scoped_ptr<Layer> root(CreateLayer(LAYER_TEXTURED));
1603   scoped_ptr<Layer> l1(CreateLayer(LAYER_TEXTURED));
1604   GetCompositor()->SetRootLayer(root.get());
1605   root->Add(l1.get());
1606
1607   l1->SetAnimator(LayerAnimator::CreateImplicitAnimator());
1608
1609   EXPECT_FLOAT_EQ(l1->opacity(), 1.0f);
1610
1611   // Trigger a threaded animation.
1612   l1->SetOpacity(0.5f);
1613
1614   // Change l1's cc::Layer.
1615   l1->SwitchCCLayerForTest();
1616
1617   // Ensure that the opacity animation completed.
1618   EXPECT_FLOAT_EQ(l1->opacity(), 0.5f);
1619 }
1620
1621 // Tests that the animators in the layer tree is added to the
1622 // animator-collection when the root-layer is set to the compositor.
1623 TEST_F(LayerWithDelegateTest, RootLayerAnimatorsInCompositor) {
1624   scoped_ptr<Layer> root(CreateLayer(LAYER_SOLID_COLOR));
1625   scoped_ptr<Layer> child(CreateColorLayer(SK_ColorRED, gfx::Rect(10, 10)));
1626   child->SetAnimator(LayerAnimator::CreateImplicitAnimator());
1627   child->SetOpacity(0.5f);
1628   root->Add(child.get());
1629
1630   EXPECT_FALSE(compositor()->layer_animator_collection()->HasActiveAnimators());
1631   compositor()->SetRootLayer(root.get());
1632   EXPECT_TRUE(compositor()->layer_animator_collection()->HasActiveAnimators());
1633 }
1634
1635 // Tests that adding/removing a layer adds/removes the animator from its entire
1636 // subtree from the compositor's animator-collection.
1637 TEST_F(LayerWithDelegateTest, AddRemoveLayerUpdatesAnimatorsFromSubtree) {
1638   scoped_ptr<Layer> root(CreateLayer(LAYER_TEXTURED));
1639   scoped_ptr<Layer> child(CreateLayer(LAYER_TEXTURED));
1640   scoped_ptr<Layer> grandchild(CreateColorLayer(SK_ColorRED,
1641                                                 gfx::Rect(10, 10)));
1642   root->Add(child.get());
1643   child->Add(grandchild.get());
1644   compositor()->SetRootLayer(root.get());
1645
1646   grandchild->SetAnimator(LayerAnimator::CreateImplicitAnimator());
1647   grandchild->SetOpacity(0.5f);
1648   EXPECT_TRUE(compositor()->layer_animator_collection()->HasActiveAnimators());
1649
1650   root->Remove(child.get());
1651   EXPECT_FALSE(compositor()->layer_animator_collection()->HasActiveAnimators());
1652
1653   root->Add(child.get());
1654   EXPECT_TRUE(compositor()->layer_animator_collection()->HasActiveAnimators());
1655 }
1656
1657 TEST_F(LayerWithDelegateTest, DestroyingLayerRemovesTheAnimatorFromCollection) {
1658   scoped_ptr<Layer> root(CreateLayer(LAYER_TEXTURED));
1659   scoped_ptr<Layer> child(CreateLayer(LAYER_TEXTURED));
1660   root->Add(child.get());
1661   compositor()->SetRootLayer(root.get());
1662
1663   child->SetAnimator(LayerAnimator::CreateImplicitAnimator());
1664   child->SetOpacity(0.5f);
1665   EXPECT_TRUE(compositor()->layer_animator_collection()->HasActiveAnimators());
1666
1667   child.reset();
1668   EXPECT_FALSE(compositor()->layer_animator_collection()->HasActiveAnimators());
1669 }
1670
1671 namespace {
1672
1673 std::string Vector2dFTo100thPercisionString(const gfx::Vector2dF& vector) {
1674   return base::StringPrintf("%.2f %0.2f", vector.x(), vector.y());
1675 }
1676
1677 }  // namespace
1678
1679 TEST_F(LayerWithRealCompositorTest, SnapLayerToPixels) {
1680   scoped_ptr<Layer> root(CreateLayer(LAYER_TEXTURED));
1681   scoped_ptr<Layer> c1(CreateLayer(LAYER_TEXTURED));
1682   scoped_ptr<Layer> c11(CreateLayer(LAYER_TEXTURED));
1683
1684   GetCompositor()->SetScaleAndSize(1.25f, gfx::Size(100, 100));
1685   GetCompositor()->SetRootLayer(root.get());
1686   root->Add(c1.get());
1687   c1->Add(c11.get());
1688
1689   root->SetBounds(gfx::Rect(0, 0, 100, 100));
1690   c1->SetBounds(gfx::Rect(1, 1, 10, 10));
1691   c11->SetBounds(gfx::Rect(1, 1, 10, 10));
1692   SnapLayerToPhysicalPixelBoundary(root.get(), c11.get());
1693   // 0.5 at 1.25 scale : (1 - 0.25 + 0.25) / 1.25 = 0.4
1694   EXPECT_EQ("0.40 0.40",
1695             Vector2dFTo100thPercisionString(c11->subpixel_position_offset()));
1696
1697   GetCompositor()->SetScaleAndSize(1.5f, gfx::Size(100, 100));
1698   SnapLayerToPhysicalPixelBoundary(root.get(), c11.get());
1699   // c11 must already be aligned at 1.5 scale.
1700   EXPECT_EQ("0.00 0.00",
1701             Vector2dFTo100thPercisionString(c11->subpixel_position_offset()));
1702
1703   c11->SetBounds(gfx::Rect(2, 2, 10, 10));
1704   SnapLayerToPhysicalPixelBoundary(root.get(), c11.get());
1705   // c11 is now off the pixel.
1706   // 0.5 / 1.5 = 0.333...
1707   EXPECT_EQ("0.33 0.33",
1708             Vector2dFTo100thPercisionString(c11->subpixel_position_offset()));
1709 }
1710
1711 class FrameDamageCheckingDelegate : public TestLayerDelegate {
1712  public:
1713   FrameDamageCheckingDelegate() : delegated_frame_damage_called_(false) {}
1714
1715   virtual void OnDelegatedFrameDamage(
1716       const gfx::Rect& damage_rect_in_dip) override {
1717     delegated_frame_damage_called_ = true;
1718     delegated_frame_damage_rect_ = damage_rect_in_dip;
1719   }
1720
1721   const gfx::Rect& delegated_frame_damage_rect() const {
1722     return delegated_frame_damage_rect_;
1723   }
1724   bool delegated_frame_damage_called() const {
1725     return delegated_frame_damage_called_;
1726   }
1727
1728  private:
1729   gfx::Rect delegated_frame_damage_rect_;
1730   bool delegated_frame_damage_called_;
1731
1732   DISALLOW_COPY_AND_ASSIGN(FrameDamageCheckingDelegate);
1733 };
1734
1735 TEST(LayerDelegateTest, DelegatedFrameDamage) {
1736   scoped_ptr<Layer> layer(new Layer(LAYER_TEXTURED));
1737   gfx::Rect damage_rect(2, 1, 5, 3);
1738
1739   FrameDamageCheckingDelegate delegate;
1740   layer->set_delegate(&delegate);
1741   scoped_refptr<cc::DelegatedFrameResourceCollection> resource_collection =
1742       new cc::DelegatedFrameResourceCollection;
1743   scoped_refptr<cc::DelegatedFrameProvider> frame_provider(
1744       new cc::DelegatedFrameProvider(resource_collection.get(),
1745                                      MakeFrameData(gfx::Size(10, 10))));
1746   layer->SetShowDelegatedContent(frame_provider.get(), gfx::Size(10, 10));
1747
1748   EXPECT_FALSE(delegate.delegated_frame_damage_called());
1749   layer->OnDelegatedFrameDamage(damage_rect);
1750   EXPECT_TRUE(delegate.delegated_frame_damage_called());
1751   EXPECT_EQ(damage_rect, delegate.delegated_frame_damage_rect());
1752 }
1753
1754 }  // namespace ui