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