cc/layers/layer_impl_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_impl.h"
   6
   7 #include "cc/layers/painted_scrollbar_layer_impl.h"
   8 #include "cc/layers/solid_color_scrollbar_layer_impl.h"
   9 #include "cc/output/filter_operation.h"
  10 #include "cc/output/filter_operations.h"
  11 #include "cc/test/fake_impl_proxy.h"
  12 #include "cc/test/fake_layer_tree_host_impl.h"
  13 #include "cc/test/fake_output_surface.h"
  14 #include "cc/test/geometry_test_utils.h"
  15 #include "cc/test/test_shared_bitmap_manager.h"
  16 #include "cc/test/test_task_graph_runner.h"
  17 #include "cc/trees/layer_tree_impl.h"
  18 #include "cc/trees/single_thread_proxy.h"
  19 #include "cc/trees/tree_synchronizer.h"
  20 #include "testing/gmock/include/gmock/gmock.h"
  21 #include "testing/gtest/include/gtest/gtest.h"
  22 #include "third_party/skia/include/effects/SkBlurImageFilter.h"
  23
  24 namespace cc {
  25 namespace {
  26
  27 #define EXECUTE_AND_VERIFY_SUBTREE_CHANGED(code_to_test)                       \
  28   root->ResetAllChangeTrackingForSubtree();                                    \
  29   code_to_test;                                                                \
  30   EXPECT_TRUE(root->needs_push_properties());                                  \
  31   EXPECT_FALSE(child->needs_push_properties());                                \
  32   EXPECT_FALSE(grand_child->needs_push_properties());                          \
  33   EXPECT_TRUE(root->LayerPropertyChanged());                                   \
  34   EXPECT_TRUE(child->LayerPropertyChanged());                                  \
  35   EXPECT_TRUE(grand_child->LayerPropertyChanged());
  36
  37 #define EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(code_to_test)                \
  38   root->ResetAllChangeTrackingForSubtree();                                    \
  39   code_to_test;                                                                \
  40   EXPECT_FALSE(root->needs_push_properties());                                 \
  41   EXPECT_FALSE(child->needs_push_properties());                                \
  42   EXPECT_FALSE(grand_child->needs_push_properties());                          \
  43   EXPECT_FALSE(root->LayerPropertyChanged());                                  \
  44   EXPECT_FALSE(child->LayerPropertyChanged());                                 \
  45   EXPECT_FALSE(grand_child->LayerPropertyChanged());
  46
  47 #define EXECUTE_AND_VERIFY_NEEDS_PUSH_PROPERTIES_AND_SUBTREE_DID_NOT_CHANGE(   \
  48       code_to_test)                                                            \
  49   root->ResetAllChangeTrackingForSubtree();                                    \
  50   code_to_test;                                                                \
  51   EXPECT_TRUE(root->needs_push_properties());                                  \
  52   EXPECT_FALSE(child->needs_push_properties());                                \
  53   EXPECT_FALSE(grand_child->needs_push_properties());                          \
  54   EXPECT_FALSE(root->LayerPropertyChanged());                                  \
  55   EXPECT_FALSE(child->LayerPropertyChanged());                                 \
  56   EXPECT_FALSE(grand_child->LayerPropertyChanged());
  57
  58 #define EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(code_to_test)                    \
  59   root->ResetAllChangeTrackingForSubtree();                                    \
  60   code_to_test;                                                                \
  61   EXPECT_TRUE(root->needs_push_properties());                                  \
  62   EXPECT_FALSE(child->needs_push_properties());                                \
  63   EXPECT_FALSE(grand_child->needs_push_properties());                          \
  64   EXPECT_TRUE(root->LayerPropertyChanged());                                   \
  65   EXPECT_FALSE(child->LayerPropertyChanged());                                 \
  66   EXPECT_FALSE(grand_child->LayerPropertyChanged());
  67
  68 #define VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(code_to_test)                      \
  69   root->ResetAllChangeTrackingForSubtree();                                    \
  70   host_impl.ForcePrepareToDraw();                                              \
  71   EXPECT_FALSE(host_impl.active_tree()->needs_update_draw_properties());       \
  72   code_to_test;                                                                \
  73   EXPECT_TRUE(host_impl.active_tree()->needs_update_draw_properties());
  74
  75 #define VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(code_to_test)                   \
  76   root->ResetAllChangeTrackingForSubtree();                                    \
  77   host_impl.ForcePrepareToDraw();                                              \
  78   EXPECT_FALSE(host_impl.active_tree()->needs_update_draw_properties());       \
  79   code_to_test;                                                                \
  80   EXPECT_FALSE(host_impl.active_tree()->needs_update_draw_properties());
  81
  82 TEST(LayerImplTest, VerifyLayerChangesAreTrackedProperly) {
  83   //
  84   // This test checks that layerPropertyChanged() has the correct behavior.
  85   //
  86
  87   // The constructor on this will fake that we are on the correct thread.
  88   // Create a simple LayerImpl tree:
  89   FakeImplProxy proxy;
  90   TestSharedBitmapManager shared_bitmap_manager;
  91   TestTaskGraphRunner task_graph_runner;
  92   scoped_ptr<OutputSurface> output_surface = FakeOutputSurface::Create3d();
  93   FakeLayerTreeHostImpl host_impl(&proxy, &shared_bitmap_manager,
  94                                   &task_graph_runner);
  95   EXPECT_TRUE(host_impl.InitializeRenderer(output_surface.get()));
  96   scoped_ptr<LayerImpl> root_clip =
  97       LayerImpl::Create(host_impl.active_tree(), 1);
  98   scoped_ptr<LayerImpl> root_ptr =
  99       LayerImpl::Create(host_impl.active_tree(), 2);
 100   LayerImpl* root = root_ptr.get();
 101   root_clip->AddChild(root_ptr.Pass());
 102   scoped_ptr<LayerImpl> scroll_parent =
 103       LayerImpl::Create(host_impl.active_tree(), 3);
 104   LayerImpl* scroll_child = LayerImpl::Create(host_impl.active_tree(), 4).get();
 105   std::set<LayerImpl*>* scroll_children = new std::set<LayerImpl*>();
 106   scroll_children->insert(scroll_child);
 107   scroll_children->insert(root);
 108   root->SetHasRenderSurface(true);
 109
 110   scoped_ptr<LayerImpl> clip_parent =
 111       LayerImpl::Create(host_impl.active_tree(), 5);
 112   LayerImpl* clip_child = LayerImpl::Create(host_impl.active_tree(), 6).get();
 113   std::set<LayerImpl*>* clip_children = new std::set<LayerImpl*>();
 114   clip_children->insert(clip_child);
 115   clip_children->insert(root);
 116
 117   root->AddChild(LayerImpl::Create(host_impl.active_tree(), 7));
 118   LayerImpl* child = root->children()[0];
 119   child->AddChild(LayerImpl::Create(host_impl.active_tree(), 8));
 120   LayerImpl* grand_child = child->children()[0];
 121
 122   root->SetScrollClipLayer(root_clip->id());
 123
 124   // Adding children is an internal operation and should not mark layers as
 125   // changed.
 126   EXPECT_FALSE(root->LayerPropertyChanged());
 127   EXPECT_FALSE(child->LayerPropertyChanged());
 128   EXPECT_FALSE(grand_child->LayerPropertyChanged());
 129
 130   gfx::PointF arbitrary_point_f = gfx::PointF(0.125f, 0.25f);
 131   gfx::Point3F arbitrary_point_3f = gfx::Point3F(0.125f, 0.25f, 0.f);
 132   float arbitrary_number = 0.352f;
 133   gfx::Size arbitrary_size = gfx::Size(111, 222);
 134   gfx::Point arbitrary_point = gfx::Point(333, 444);
 135   gfx::Vector2d arbitrary_vector2d = gfx::Vector2d(111, 222);
 136   gfx::Rect arbitrary_rect = gfx::Rect(arbitrary_point, arbitrary_size);
 137   gfx::RectF arbitrary_rect_f =
 138       gfx::RectF(arbitrary_point_f, gfx::SizeF(1.234f, 5.678f));
 139   SkColor arbitrary_color = SkColorSetRGB(10, 20, 30);
 140   gfx::Transform arbitrary_transform;
 141   arbitrary_transform.Scale3d(0.1f, 0.2f, 0.3f);
 142   FilterOperations arbitrary_filters;
 143   arbitrary_filters.Append(FilterOperation::CreateOpacityFilter(0.5f));
 144   SkXfermode::Mode arbitrary_blend_mode = SkXfermode::kMultiply_Mode;
 145
 146   // These properties are internal, and should not be considered "change" when
 147   // they are used.
 148   EXECUTE_AND_VERIFY_NEEDS_PUSH_PROPERTIES_AND_SUBTREE_DID_NOT_CHANGE(
 149       root->SetUpdateRect(arbitrary_rect));
 150   EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetBounds(arbitrary_size));
 151
 152   // Changing these properties affects the entire subtree of layers.
 153   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(
 154       root->SetTransformOrigin(arbitrary_point_3f));
 155   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetFilters(arbitrary_filters));
 156   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetFilters(FilterOperations()));
 157   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(
 158       root->SetMaskLayer(LayerImpl::Create(host_impl.active_tree(), 9)));
 159   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetMasksToBounds(true));
 160   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetContentsOpaque(true));
 161   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(
 162       root->SetReplicaLayer(LayerImpl::Create(host_impl.active_tree(), 10)));
 163   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetPosition(arbitrary_point_f));
 164   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetShouldFlattenTransform(false));
 165   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->Set3dSortingContextId(1));
 166   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(
 167       root->SetDoubleSided(false));  // constructor initializes it to "true".
 168   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->ScrollBy(arbitrary_vector2d));
 169   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetScrollDelta(gfx::Vector2d()));
 170   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->PushScrollOffsetFromMainThread(
 171       gfx::ScrollOffset(arbitrary_vector2d)));
 172   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetHideLayerAndSubtree(true));
 173   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetOpacity(arbitrary_number));
 174   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetBlendMode(arbitrary_blend_mode));
 175   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetTransform(arbitrary_transform));
 176
 177   // Changing these properties only affects the layer itself.
 178   EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetDrawsContent(true));
 179   EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(
 180       root->SetBackgroundColor(arbitrary_color));
 181   EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(
 182       root->SetBackgroundFilters(arbitrary_filters));
 183
 184   // Special case: check that SetBounds changes behavior depending on
 185   // masksToBounds.
 186   root->SetMasksToBounds(false);
 187   EXECUTE_AND_VERIFY_ONLY_LAYER_CHANGED(root->SetBounds(gfx::Size(135, 246)));
 188   root->SetMasksToBounds(true);
 189   // Should be a different size than previous call, to ensure it marks tree
 190   // changed.
 191   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetBounds(arbitrary_size));
 192
 193   // Changing this property does not cause the layer to be marked as changed
 194   // but does cause the layer to need to push properties.
 195   EXECUTE_AND_VERIFY_NEEDS_PUSH_PROPERTIES_AND_SUBTREE_DID_NOT_CHANGE(
 196       root->SetIsRootForIsolatedGroup(true));
 197
 198   // Changing these properties should cause the layer to need to push properties
 199   EXECUTE_AND_VERIFY_NEEDS_PUSH_PROPERTIES_AND_SUBTREE_DID_NOT_CHANGE(
 200       root->SetScrollParent(scroll_parent.get()));
 201   EXECUTE_AND_VERIFY_NEEDS_PUSH_PROPERTIES_AND_SUBTREE_DID_NOT_CHANGE(
 202       root->SetScrollChildren(scroll_children));
 203   EXECUTE_AND_VERIFY_NEEDS_PUSH_PROPERTIES_AND_SUBTREE_DID_NOT_CHANGE(
 204       root->SetClipParent(clip_parent.get()));
 205   EXECUTE_AND_VERIFY_NEEDS_PUSH_PROPERTIES_AND_SUBTREE_DID_NOT_CHANGE(
 206       root->SetClipChildren(clip_children));
 207   EXECUTE_AND_VERIFY_NEEDS_PUSH_PROPERTIES_AND_SUBTREE_DID_NOT_CHANGE(
 208       root->SetNumDescendantsThatDrawContent(10));
 209
 210   // After setting all these properties already, setting to the exact same
 211   // values again should not cause any change.
 212   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(
 213       root->SetTransformOrigin(arbitrary_point_3f));
 214   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetMasksToBounds(true));
 215   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(
 216       root->SetPosition(arbitrary_point_f));
 217   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(
 218       root->SetShouldFlattenTransform(false));
 219   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->Set3dSortingContextId(1));
 220   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(
 221       root->SetTransform(arbitrary_transform));
 222   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(
 223       root->SetDoubleSided(false));  // constructor initializes it to "true".
 224   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(
 225       root->SetScrollDelta(gfx::Vector2d()));
 226   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(
 227       root->PushScrollOffsetFromMainThread(
 228           gfx::ScrollOffset(arbitrary_vector2d)));
 229   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetContentsOpaque(true));
 230   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetOpacity(arbitrary_number));
 231   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(
 232       root->SetBlendMode(arbitrary_blend_mode));
 233   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(
 234       root->SetIsRootForIsolatedGroup(true));
 235   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetDrawsContent(true));
 236   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetBounds(arbitrary_size));
 237   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(
 238       root->SetScrollParent(scroll_parent.get()));
 239   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(
 240       root->SetScrollChildren(scroll_children));
 241   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(
 242       root->SetClipParent(clip_parent.get()));
 243   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(
 244       root->SetClipChildren(clip_children));
 245 }
 246
 247 TEST(LayerImplTest, VerifyNeedsUpdateDrawProperties) {
 248   FakeImplProxy proxy;
 249   TestSharedBitmapManager shared_bitmap_manager;
 250   TestTaskGraphRunner task_graph_runner;
 251   scoped_ptr<OutputSurface> output_surface = FakeOutputSurface::Create3d();
 252   FakeLayerTreeHostImpl host_impl(&proxy, &shared_bitmap_manager,
 253                                   &task_graph_runner);
 254   EXPECT_TRUE(host_impl.InitializeRenderer(output_surface.get()));
 255   host_impl.active_tree()->SetRootLayer(
 256       LayerImpl::Create(host_impl.active_tree(), 1));
 257   LayerImpl* root = host_impl.active_tree()->root_layer();
 258   root->SetHasRenderSurface(true);
 259   scoped_ptr<LayerImpl> layer_ptr =
 260       LayerImpl::Create(host_impl.active_tree(), 2);
 261   LayerImpl* layer = layer_ptr.get();
 262   root->AddChild(layer_ptr.Pass());
 263   layer->SetScrollClipLayer(root->id());
 264   DCHECK(host_impl.CanDraw());
 265
 266   gfx::PointF arbitrary_point_f = gfx::PointF(0.125f, 0.25f);
 267   float arbitrary_number = 0.352f;
 268   gfx::Size arbitrary_size = gfx::Size(111, 222);
 269   gfx::Point arbitrary_point = gfx::Point(333, 444);
 270   gfx::Vector2d arbitrary_vector2d = gfx::Vector2d(111, 222);
 271   gfx::Size large_size = gfx::Size(1000, 1000);
 272   gfx::Rect arbitrary_rect = gfx::Rect(arbitrary_point, arbitrary_size);
 273   gfx::RectF arbitrary_rect_f =
 274       gfx::RectF(arbitrary_point_f, gfx::SizeF(1.234f, 5.678f));
 275   SkColor arbitrary_color = SkColorSetRGB(10, 20, 30);
 276   gfx::Transform arbitrary_transform;
 277   arbitrary_transform.Scale3d(0.1f, 0.2f, 0.3f);
 278   FilterOperations arbitrary_filters;
 279   arbitrary_filters.Append(FilterOperation::CreateOpacityFilter(0.5f));
 280   SkXfermode::Mode arbitrary_blend_mode = SkXfermode::kMultiply_Mode;
 281
 282   // Render surface functions.
 283   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetHasRenderSurface(true));
 284   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetHasRenderSurface(true));
 285   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetHasRenderSurface(false));
 286   // Create a render surface, because we must have a render surface if we have
 287   // filters.
 288   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetHasRenderSurface(true));
 289
 290   // Related filter functions.
 291   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetFilters(arbitrary_filters));
 292   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetFilters(arbitrary_filters));
 293   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetFilters(FilterOperations()));
 294   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetFilters(arbitrary_filters));
 295
 296   // Related scrolling functions.
 297   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetBounds(large_size));
 298   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetBounds(large_size));
 299   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->ScrollBy(arbitrary_vector2d));
 300   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(layer->ScrollBy(gfx::Vector2d()));
 301   layer->SetScrollDelta(gfx::Vector2d(0, 0));
 302   host_impl.ForcePrepareToDraw();
 303   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(
 304       layer->SetScrollDelta(arbitrary_vector2d));
 305   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(
 306       layer->SetScrollDelta(arbitrary_vector2d));
 307   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->PushScrollOffsetFromMainThread(
 308       gfx::ScrollOffset(arbitrary_vector2d)));
 309   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(layer->PushScrollOffsetFromMainThread(
 310       gfx::ScrollOffset(arbitrary_vector2d)));
 311
 312   // Unrelated functions, always set to new values, always set needs update.
 313   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(
 314       layer->SetMaskLayer(LayerImpl::Create(host_impl.active_tree(), 4)));
 315   host_impl.active_tree()->BuildPropertyTreesForTesting();
 316   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetMasksToBounds(true));
 317   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetContentsOpaque(true));
 318   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(
 319       layer->SetReplicaLayer(LayerImpl::Create(host_impl.active_tree(), 5)));
 320   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetPosition(arbitrary_point_f));
 321   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetShouldFlattenTransform(false));
 322   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->Set3dSortingContextId(1));
 323
 324   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(
 325       layer->SetDoubleSided(false));  // constructor initializes it to "true".
 326   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetDrawsContent(true));
 327   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(
 328       layer->SetBackgroundColor(arbitrary_color));
 329   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(
 330       layer->SetBackgroundFilters(arbitrary_filters));
 331   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetOpacity(arbitrary_number));
 332   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(
 333       layer->SetBlendMode(arbitrary_blend_mode));
 334   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetTransform(arbitrary_transform));
 335   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetBounds(arbitrary_size));
 336
 337   // Unrelated functions, set to the same values, no needs update.
 338   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(
 339       layer->SetIsRootForIsolatedGroup(true));
 340   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetFilters(arbitrary_filters));
 341   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetMasksToBounds(true));
 342   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetContentsOpaque(true));
 343   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetPosition(arbitrary_point_f));
 344   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(layer->Set3dSortingContextId(1));
 345   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(
 346       layer->SetDoubleSided(false));  // constructor initializes it to "true".
 347   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetDrawsContent(true));
 348   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(
 349       layer->SetBackgroundColor(arbitrary_color));
 350   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(
 351       layer->SetBackgroundFilters(arbitrary_filters));
 352   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetOpacity(arbitrary_number));
 353   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(
 354       layer->SetBlendMode(arbitrary_blend_mode));
 355   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(
 356       layer->SetIsRootForIsolatedGroup(true));
 357   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(
 358       layer->SetTransform(arbitrary_transform));
 359   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(layer->SetBounds(arbitrary_size));
 360 }
 361
 362 TEST(LayerImplTest, SafeOpaqueBackgroundColor) {
 363   FakeImplProxy proxy;
 364   TestSharedBitmapManager shared_bitmap_manager;
 365   TestTaskGraphRunner task_graph_runner;
 366   scoped_ptr<OutputSurface> output_surface = FakeOutputSurface::Create3d();
 367   FakeLayerTreeHostImpl host_impl(&proxy, &shared_bitmap_manager,
 368                                   &task_graph_runner);
 369   EXPECT_TRUE(host_impl.InitializeRenderer(output_surface.get()));
 370   scoped_ptr<LayerImpl> layer = LayerImpl::Create(host_impl.active_tree(), 1);
 371
 372   for (int contents_opaque = 0; contents_opaque < 2; ++contents_opaque) {
 373     for (int layer_opaque = 0; layer_opaque < 2; ++layer_opaque) {
 374       for (int host_opaque = 0; host_opaque < 2; ++host_opaque) {
 375         layer->SetContentsOpaque(!!contents_opaque);
 376         layer->SetBackgroundColor(layer_opaque ? SK_ColorRED
 377                                                : SK_ColorTRANSPARENT);
 378         host_impl.active_tree()->set_background_color(
 379             host_opaque ? SK_ColorRED : SK_ColorTRANSPARENT);
 380
 381         SkColor safe_color = layer->SafeOpaqueBackgroundColor();
 382         if (contents_opaque) {
 383           EXPECT_EQ(SkColorGetA(safe_color), 255u)
 384               << "Flags: " << contents_opaque << ", " << layer_opaque << ", "
 385               << host_opaque << "\n";
 386         } else {
 387           EXPECT_NE(SkColorGetA(safe_color), 255u)
 388               << "Flags: " << contents_opaque << ", " << layer_opaque << ", "
 389               << host_opaque << "\n";
 390         }
 391       }
 392     }
 393   }
 394 }
 395
 396 TEST(LayerImplTest, TransformInvertibility) {
 397   FakeImplProxy proxy;
 398   TestSharedBitmapManager shared_bitmap_manager;
 399   TestTaskGraphRunner task_graph_runner;
 400   FakeLayerTreeHostImpl host_impl(&proxy, &shared_bitmap_manager,
 401                                   &task_graph_runner);
 402
 403   scoped_ptr<LayerImpl> layer = LayerImpl::Create(host_impl.active_tree(), 1);
 404   EXPECT_TRUE(layer->transform().IsInvertible());
 405   EXPECT_TRUE(layer->transform_is_invertible());
 406
 407   gfx::Transform transform;
 408   transform.Scale3d(
 409       SkDoubleToMScalar(1.0), SkDoubleToMScalar(1.0), SkDoubleToMScalar(0.0));
 410   layer->SetTransform(transform);
 411   EXPECT_FALSE(layer->transform().IsInvertible());
 412   EXPECT_FALSE(layer->transform_is_invertible());
 413
 414   transform.MakeIdentity();
 415   transform.ApplyPerspectiveDepth(SkDoubleToMScalar(100.0));
 416   transform.RotateAboutZAxis(75.0);
 417   transform.RotateAboutXAxis(32.2);
 418   transform.RotateAboutZAxis(-75.0);
 419   transform.Translate3d(SkDoubleToMScalar(50.5),
 420                         SkDoubleToMScalar(42.42),
 421                         SkDoubleToMScalar(-100.25));
 422
 423   layer->SetTransform(transform);
 424   EXPECT_TRUE(layer->transform().IsInvertible());
 425   EXPECT_TRUE(layer->transform_is_invertible());
 426 }
 427
 428 class LayerImplScrollTest : public testing::Test {
 429  public:
 430   LayerImplScrollTest()
 431       : host_impl_(settings(),
 432                    &proxy_,
 433                    &shared_bitmap_manager_,
 434                    &task_graph_runner_),
 435         root_id_(7) {
 436     host_impl_.active_tree()->SetRootLayer(
 437         LayerImpl::Create(host_impl_.active_tree(), root_id_));
 438     host_impl_.active_tree()->root_layer()->AddChild(
 439         LayerImpl::Create(host_impl_.active_tree(), root_id_ + 1));
 440     layer()->SetScrollClipLayer(root_id_);
 441     // Set the max scroll offset by noting that the root layer has bounds (1,1),
 442     // thus whatever bounds are set for the layer will be the max scroll
 443     // offset plus 1 in each direction.
 444     host_impl_.active_tree()->root_layer()->SetBounds(gfx::Size(1, 1));
 445     gfx::Vector2d max_scroll_offset(51, 81);
 446     layer()->SetBounds(gfx::Size(max_scroll_offset.x(), max_scroll_offset.y()));
 447   }
 448
 449   LayerImpl* layer() {
 450     return host_impl_.active_tree()->root_layer()->children()[0];
 451   }
 452
 453   LayerTreeHostImpl& host_impl() { return host_impl_; }
 454
 455   LayerTreeImpl* tree() { return host_impl_.active_tree(); }
 456
 457   LayerTreeSettings settings() {
 458     LayerTreeSettings settings;
 459     return settings;
 460   }
 461
 462  private:
 463   FakeImplProxy proxy_;
 464   TestSharedBitmapManager shared_bitmap_manager_;
 465   TestTaskGraphRunner task_graph_runner_;
 466   FakeLayerTreeHostImpl host_impl_;
 467   int root_id_;
 468 };
 469
 470 TEST_F(LayerImplScrollTest, ScrollByWithZeroOffset) {
 471   // Test that LayerImpl::ScrollBy only affects ScrollDelta and total scroll
 472   // offset is bounded by the range [0, max scroll offset].
 473
 474   EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->CurrentScrollOffset());
 475   EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->BaseScrollOffset());
 476   EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->ScrollDelta());
 477
 478   layer()->ScrollBy(gfx::Vector2dF(-100, 100));
 479   EXPECT_VECTOR_EQ(gfx::Vector2dF(0, 80), layer()->CurrentScrollOffset());
 480
 481   EXPECT_VECTOR_EQ(layer()->ScrollDelta(), layer()->CurrentScrollOffset());
 482   EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->BaseScrollOffset());
 483
 484   layer()->ScrollBy(gfx::Vector2dF(100, -100));
 485   EXPECT_VECTOR_EQ(gfx::Vector2dF(50, 0), layer()->CurrentScrollOffset());
 486
 487   EXPECT_VECTOR_EQ(layer()->ScrollDelta(), layer()->CurrentScrollOffset());
 488   EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->BaseScrollOffset());
 489 }
 490
 491 TEST_F(LayerImplScrollTest, ScrollByWithNonZeroOffset) {
 492   gfx::ScrollOffset scroll_offset(10, 5);
 493   layer()->PushScrollOffsetFromMainThread(scroll_offset);
 494
 495   EXPECT_VECTOR_EQ(scroll_offset, layer()->CurrentScrollOffset());
 496   EXPECT_VECTOR_EQ(scroll_offset, layer()->BaseScrollOffset());
 497   EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->ScrollDelta());
 498
 499   layer()->ScrollBy(gfx::Vector2dF(-100, 100));
 500   EXPECT_VECTOR_EQ(gfx::Vector2dF(0, 80), layer()->CurrentScrollOffset());
 501
 502   EXPECT_VECTOR_EQ(
 503       gfx::ScrollOffsetWithDelta(scroll_offset, layer()->ScrollDelta()),
 504       layer()->CurrentScrollOffset());
 505   EXPECT_VECTOR_EQ(scroll_offset, layer()->BaseScrollOffset());
 506
 507   layer()->ScrollBy(gfx::Vector2dF(100, -100));
 508   EXPECT_VECTOR_EQ(gfx::Vector2dF(50, 0), layer()->CurrentScrollOffset());
 509
 510   EXPECT_VECTOR_EQ(
 511       gfx::ScrollOffsetWithDelta(scroll_offset, layer()->ScrollDelta()),
 512       layer()->CurrentScrollOffset());
 513   EXPECT_VECTOR_EQ(scroll_offset, layer()->BaseScrollOffset());
 514 }
 515
 516 TEST_F(LayerImplScrollTest, ApplySentScrollsNoListener) {
 517   gfx::ScrollOffset scroll_offset(10, 5);
 518   gfx::Vector2dF scroll_delta(20.5f, 8.5f);
 519   gfx::Vector2d sent_scroll_delta(12, -3);
 520
 521   layer()->PushScrollOffsetFromMainThread(scroll_offset);
 522   layer()->ScrollBy(sent_scroll_delta);
 523   layer()->PullDeltaForMainThread();
 524   layer()->SetCurrentScrollOffset(scroll_offset +
 525                                   gfx::ScrollOffset(scroll_delta));
 526
 527   EXPECT_VECTOR_EQ(gfx::ScrollOffsetWithDelta(scroll_offset, scroll_delta),
 528                    layer()->CurrentScrollOffset());
 529   EXPECT_VECTOR_EQ(scroll_delta, layer()->ScrollDelta());
 530   EXPECT_VECTOR_EQ(scroll_offset, layer()->BaseScrollOffset());
 531
 532   layer()->ApplySentScrollDeltasFromAbortedCommit();
 533
 534   EXPECT_VECTOR_EQ(gfx::ScrollOffsetWithDelta(scroll_offset, scroll_delta),
 535                    layer()->CurrentScrollOffset());
 536   EXPECT_VECTOR_EQ(scroll_delta - sent_scroll_delta, layer()->ScrollDelta());
 537   EXPECT_VECTOR_EQ(gfx::ScrollOffsetWithDelta(scroll_offset, sent_scroll_delta),
 538                    layer()->BaseScrollOffset());
 539 }
 540
 541 TEST_F(LayerImplScrollTest, ScrollUserUnscrollableLayer) {
 542   gfx::ScrollOffset scroll_offset(10, 5);
 543   gfx::Vector2dF scroll_delta(20.5f, 8.5f);
 544
 545   layer()->set_user_scrollable_vertical(false);
 546   layer()->PushScrollOffsetFromMainThread(scroll_offset);
 547   gfx::Vector2dF unscrolled = layer()->ScrollBy(scroll_delta);
 548
 549   EXPECT_VECTOR_EQ(gfx::Vector2dF(0, 8.5f), unscrolled);
 550   EXPECT_VECTOR_EQ(gfx::Vector2dF(30.5f, 5), layer()->CurrentScrollOffset());
 551 }
 552
 553 TEST_F(LayerImplScrollTest, PushPropertiesToMirrorsCurrentScrollOffset) {
 554   gfx::ScrollOffset scroll_offset(10, 5);
 555   gfx::Vector2dF scroll_delta(12, 18);
 556
 557   host_impl().CreatePendingTree();
 558
 559   layer()->PushScrollOffsetFromMainThread(scroll_offset);
 560   gfx::Vector2dF unscrolled = layer()->ScrollBy(scroll_delta);
 561
 562   EXPECT_VECTOR_EQ(gfx::Vector2dF(0, 0), unscrolled);
 563   EXPECT_VECTOR_EQ(gfx::Vector2dF(22, 23), layer()->CurrentScrollOffset());
 564
 565   layer()->PullDeltaForMainThread();
 566
 567   scoped_ptr<LayerImpl> pending_layer = LayerImpl::Create(
 568       host_impl().sync_tree(), layer()->id(), layer()->synced_scroll_offset());
 569   pending_layer->PushScrollOffsetFromMainThread(layer()->CurrentScrollOffset());
 570
 571   pending_layer->PushPropertiesTo(layer());
 572
 573   EXPECT_VECTOR_EQ(gfx::Vector2dF(22, 23), layer()->CurrentScrollOffset());
 574   EXPECT_VECTOR_EQ(layer()->CurrentScrollOffset(),
 575                    pending_layer->CurrentScrollOffset());
 576 }
 577
 578 TEST_F(LayerImplScrollTest, SetNewScrollbarParameters) {
 579   gfx::ScrollOffset scroll_offset(10, 5);
 580   layer()->PushScrollOffsetFromMainThread(scroll_offset);
 581
 582   scoped_ptr<PaintedScrollbarLayerImpl> vertical_scrollbar(
 583       PaintedScrollbarLayerImpl::Create(tree(), 100, VERTICAL));
 584   vertical_scrollbar->SetScrollLayerAndClipLayerByIds(
 585       layer()->id(), tree()->root_layer()->id());
 586
 587   int expected_vertical_maximum =
 588       layer()->bounds().height() - tree()->root_layer()->bounds().height();
 589   EXPECT_EQ(expected_vertical_maximum, vertical_scrollbar->maximum());
 590   EXPECT_EQ(scroll_offset.y(), vertical_scrollbar->current_pos());
 591
 592   scoped_ptr<PaintedScrollbarLayerImpl> horizontal_scrollbar(
 593       PaintedScrollbarLayerImpl::Create(tree(), 101, HORIZONTAL));
 594   horizontal_scrollbar->SetScrollLayerAndClipLayerByIds(
 595       layer()->id(), tree()->root_layer()->id());
 596
 597   int expected_horizontal_maximum =
 598       layer()->bounds().width() - tree()->root_layer()->bounds().width();
 599   EXPECT_EQ(expected_horizontal_maximum, horizontal_scrollbar->maximum());
 600   EXPECT_EQ(scroll_offset.x(), horizontal_scrollbar->current_pos());
 601 }
 602
 603 class LayerImplScrollbarSyncTest : public testing::Test {
 604  public:
 605   enum {
 606     ROOT = 1,
 607     IV_CLIP = 2,
 608     PAGE = 3,
 609     IV_SCROLL = 4,
 610     SCROLLBAR = 5,
 611     OLD_ROOT = 6,
 612     OV_CLIP = 7,
 613     OV_SCROLL = 8,
 614   };
 615   enum TreeID {
 616     PENDING,
 617     ACTIVE
 618   };
 619
 620   LayerImplScrollbarSyncTest()
 621       : host_impl_(settings(),
 622                    &proxy_,
 623                    &shared_bitmap_manager_,
 624                    &task_graph_runner_) {
 625     host_impl_.CreatePendingTree();
 626
 627     CreateLayers(host_impl_.pending_tree());
 628     CreateLayers(host_impl_.active_tree());
 629   }
 630
 631   void CreateLayers(LayerTreeImpl * tree) {
 632     tree->SetRootLayer(LayerImpl::Create(tree, ROOT));
 633     LayerImpl * root = tree->root_layer();
 634     ASSERT_TRUE(root != nullptr);
 635
 636     int hierarchy[] = {IV_CLIP, PAGE, IV_SCROLL, OLD_ROOT, OV_CLIP, OV_SCROLL};
 637     LayerImpl * parent = root;
 638     for (int child_id : hierarchy) {
 639       parent->AddChild(LayerImpl::Create(tree, child_id));
 640       parent = tree->LayerById(child_id);
 641       ASSERT_TRUE(parent != nullptr);
 642     }
 643
 644     root->AddChild(
 645         SolidColorScrollbarLayerImpl::Create(tree, SCROLLBAR, HORIZONTAL,
 646                                              5, 5, false, true));
 647   }
 648
 649   LayerImpl* layer(int id, TreeID tree_id) {
 650     LayerTreeImpl* tree =
 651         ((tree_id == PENDING) ?
 652          host_impl_.pending_tree() : host_impl_.active_tree());
 653
 654     assert(tree);
 655     return tree->LayerById(id);
 656   }
 657
 658   bool LayerHasScrollbar(int id, TreeID tree_id) {
 659     return layer(id, tree_id)->HasScrollbar(HORIZONTAL);
 660   }
 661
 662   ScrollbarLayerImplBase* pending_scrollbar() {
 663     LayerImpl* layer_impl = layer(SCROLLBAR, PENDING);
 664     assert(layer_impl);
 665     return layer_impl->ToScrollbarLayer();
 666   }
 667
 668   LayerImpl* pending_root() {
 669     LayerImpl * result = layer(ROOT, PENDING);
 670     assert(result);
 671     return result;
 672   }
 673
 674   LayerImpl* active_root() {
 675     LayerImpl * result = layer(ROOT, ACTIVE);
 676     assert(result);
 677     return result;
 678   }
 679
 680   LayerTreeSettings settings() {
 681     LayerTreeSettings settings;
 682     return settings;
 683   }
 684
 685  private:
 686   FakeImplProxy proxy_;
 687   TestSharedBitmapManager shared_bitmap_manager_;
 688   TestTaskGraphRunner task_graph_runner_;
 689   FakeLayerTreeHostImpl host_impl_;
 690 };
 691
 692 TEST_F(LayerImplScrollbarSyncTest, LayerImplBecomesScrollable) {
 693   // In the beginning IV_SCROLL layer is not scrollable.
 694   ASSERT_FALSE(layer(IV_SCROLL, PENDING)->scrollable());
 695
 696   // For pinch virtual viewport the clip layer is the inner viewport
 697   // clip layer (IV_CLIP) and the scroll one is the outer viewport
 698   // scroll layer (OV_SCROLL).
 699   pending_scrollbar()->SetScrollLayerAndClipLayerByIds(OV_SCROLL, IV_CLIP);
 700
 701   ASSERT_TRUE(LayerHasScrollbar(OV_SCROLL, PENDING));
 702   ASSERT_TRUE(LayerHasScrollbar(IV_CLIP, PENDING));
 703
 704   // Synchronize with the active tree.
 705   TreeSynchronizer::PushProperties(pending_root(), active_root());
 706
 707   ASSERT_TRUE(LayerHasScrollbar(OV_SCROLL, ACTIVE));
 708   ASSERT_TRUE(LayerHasScrollbar(IV_CLIP, ACTIVE));
 709
 710   // Make IV_SCROLL layer scrollable.
 711   layer(IV_SCROLL, PENDING)->SetScrollClipLayer(IV_CLIP);
 712   layer(IV_SCROLL, PENDING)->SetNeedsPushProperties();
 713   ASSERT_TRUE(layer(IV_SCROLL, PENDING)->scrollable());
 714
 715   pending_scrollbar()->SetScrollLayerAndClipLayerByIds(OV_SCROLL, IV_CLIP);
 716
 717   // Now IV_CLIP layer should also receive the scrollbar.
 718   ASSERT_TRUE(LayerHasScrollbar(OV_SCROLL, PENDING));
 719   ASSERT_TRUE(LayerHasScrollbar(IV_CLIP, PENDING));
 720   ASSERT_TRUE(LayerHasScrollbar(IV_SCROLL, PENDING));
 721
 722   // Synchronize with the active tree.
 723   TreeSynchronizer::PushProperties(pending_root(), active_root());
 724
 725   ASSERT_TRUE(layer(IV_SCROLL, ACTIVE)->scrollable());
 726
 727   ASSERT_TRUE(LayerHasScrollbar(OV_SCROLL, ACTIVE));
 728   ASSERT_TRUE(LayerHasScrollbar(IV_CLIP, ACTIVE));
 729   ASSERT_TRUE(LayerHasScrollbar(IV_SCROLL, ACTIVE));
 730 }
 731
 732 }  // namespace
 733 }  // namespace cc