Pinch/Zoom Infrastructure & Plumbing CL

cc/layers/layer_impl_unittest.cc

 // Copyright 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "cc/layers/layer_impl.h"
 
 #include "cc/output/filter_operation.h"
 #include "cc/output/filter_operations.h"
 #include "cc/test/fake_impl_proxy.h"
 #include "cc/test/fake_layer_tree_host_impl.h"
@@ skipping 53 matching lines @@
 TEST(LayerImplTest, VerifyLayerChangesAreTrackedProperly) {
   //
   // This test checks that layerPropertyChanged() has the correct behavior.
   //
 
   // The constructor on this will fake that we are on the correct thread.
   // Create a simple LayerImpl tree:
   FakeImplProxy proxy;
   FakeLayerTreeHostImpl host_impl(&proxy);
   EXPECT_TRUE(host_impl.InitializeRenderer(CreateFakeOutputSurface()));
-  scoped_ptr<LayerImpl> root = LayerImpl::Create(host_impl.active_tree(), 1);
-  root->AddChild(LayerImpl::Create(host_impl.active_tree(), 2));
+  scoped_ptr<LayerImpl> root_clip =
+      LayerImpl::Create(host_impl.active_tree(), 1);
+  root_clip->AddChild(LayerImpl::Create(host_impl.active_tree(), 2));
+  LayerImpl* root = root_clip->children()[0];
+  root->AddChild(LayerImpl::Create(host_impl.active_tree(), 3));
   LayerImpl* child = root->children()[0];
-  child->AddChild(LayerImpl::Create(host_impl.active_tree(), 3));
+  child->AddChild(LayerImpl::Create(host_impl.active_tree(), 4));
   LayerImpl* grand_child = child->children()[0];
 
-  root->SetScrollable(true);
+  root->SetScrollClipLayer(root_clip->id());
 
   // Adding children is an internal operation and should not mark layers as
   // changed.
   EXPECT_FALSE(root->LayerPropertyChanged());
   EXPECT_FALSE(child->LayerPropertyChanged());
   EXPECT_FALSE(grand_child->LayerPropertyChanged());
 
   gfx::PointF arbitrary_point_f = gfx::PointF(0.125f, 0.25f);
   float arbitrary_number = 0.352f;
   gfx::Size arbitrary_size = gfx::Size(111, 222);
   gfx::Point arbitrary_point = gfx::Point(333, 444);
   gfx::Vector2d arbitrary_vector2d = gfx::Vector2d(111, 222);
   gfx::Rect arbitrary_rect = gfx::Rect(arbitrary_point, arbitrary_size);
   gfx::RectF arbitrary_rect_f =
       gfx::RectF(arbitrary_point_f, gfx::SizeF(1.234f, 5.678f));
   SkColor arbitrary_color = SkColorSetRGB(10, 20, 30);
   gfx::Transform arbitrary_transform;
   arbitrary_transform.Scale3d(0.1f, 0.2f, 0.3f);
   FilterOperations arbitrary_filters;
   arbitrary_filters.Append(FilterOperation::CreateOpacityFilter(0.5f));
   SkXfermode::Mode arbitrary_blend_mode = SkXfermode::kMultiply_Mode;
 
   // These properties are internal, and should not be considered "change" when
   // they are used.
   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(
       root->set_update_rect(arbitrary_rect_f));
   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(
-      root->SetMaxScrollOffset(arbitrary_vector2d));
+      root_clip->SetBounds(arbitrary_size));
 
   // Changing these properties affects the entire subtree of layers.
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetAnchorPoint(arbitrary_point_f));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetAnchorPointZ(arbitrary_number));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetFilters(arbitrary_filters));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetFilters(FilterOperations()));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(
-      root->SetMaskLayer(LayerImpl::Create(host_impl.active_tree(), 4)));
+      root->SetMaskLayer(LayerImpl::Create(host_impl.active_tree(), 5)));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetMasksToBounds(true));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetContentsOpaque(true));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(
-      root->SetReplicaLayer(LayerImpl::Create(host_impl.active_tree(), 5)));
+      root->SetReplicaLayer(LayerImpl::Create(host_impl.active_tree(), 6)));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetPosition(arbitrary_point_f));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetPreserves3d(true));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(
       root->SetDoubleSided(false));  // constructor initializes it to "true".
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->ScrollBy(arbitrary_vector2d));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetScrollDelta(gfx::Vector2d()));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetScrollOffset(arbitrary_vector2d));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetHideLayerAndSubtree(true));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetOpacity(arbitrary_number));
   EXECUTE_AND_VERIFY_SUBTREE_CHANGED(root->SetBlendMode(arbitrary_blend_mode));
@@ skipping 57 matching lines @@
   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetDrawsContent(true));
   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(
       root->SetSublayerTransform(arbitrary_transform));
   EXECUTE_AND_VERIFY_SUBTREE_DID_NOT_CHANGE(root->SetBounds(arbitrary_size));
 }
 
 TEST(LayerImplTest, VerifyNeedsUpdateDrawProperties) {
   FakeImplProxy proxy;
   FakeLayerTreeHostImpl host_impl(&proxy);
   EXPECT_TRUE(host_impl.InitializeRenderer(CreateFakeOutputSurface()));
-  scoped_ptr<LayerImpl> root = LayerImpl::Create(host_impl.active_tree(), 1);
-  root->SetScrollable(true);
+  scoped_ptr<LayerImpl> root_clip =
+      LayerImpl::Create(host_impl.active_tree(), 1);
+  root_clip->AddChild(LayerImpl::Create(host_impl.active_tree(), 2));
+  LayerImpl* root = root_clip->children()[0];
+  root->SetScrollClipLayer(root_clip->id());
 
   gfx::PointF arbitrary_point_f = gfx::PointF(0.125f, 0.25f);
   float arbitrary_number = 0.352f;
   gfx::Size arbitrary_size = gfx::Size(111, 222);
   gfx::Point arbitrary_point = gfx::Point(333, 444);
   gfx::Vector2d arbitrary_vector2d = gfx::Vector2d(111, 222);
-  gfx::Vector2d large_vector2d = gfx::Vector2d(1000, 1000);
+  gfx::Size large_size = gfx::Size(1000, 1000);
   gfx::Rect arbitrary_rect = gfx::Rect(arbitrary_point, arbitrary_size);
   gfx::RectF arbitrary_rect_f =
       gfx::RectF(arbitrary_point_f, gfx::SizeF(1.234f, 5.678f));
   SkColor arbitrary_color = SkColorSetRGB(10, 20, 30);
   gfx::Transform arbitrary_transform;
   arbitrary_transform.Scale3d(0.1f, 0.2f, 0.3f);
   FilterOperations arbitrary_filters;
   arbitrary_filters.Append(FilterOperation::CreateOpacityFilter(0.5f));
   SkXfermode::Mode arbitrary_blend_mode = SkXfermode::kMultiply_Mode;
 
   // Related filter functions.
   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilters(arbitrary_filters));
   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilters(arbitrary_filters));
   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilters(FilterOperations()));
   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetFilters(arbitrary_filters));
 
   // Related scrolling functions.
-  VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetMaxScrollOffset(large_vector2d));
+  VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetBounds(large_size));
   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(
-      root->SetMaxScrollOffset(large_vector2d));
+      root->SetBounds(large_size));
   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->ScrollBy(arbitrary_vector2d));
   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(root->ScrollBy(gfx::Vector2d()));
   root->SetScrollDelta(gfx::Vector2d(0, 0));
   host_impl.ForcePrepareToDraw();
   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(root->SetScrollDelta(arbitrary_vector2d));
   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(
       root->SetScrollDelta(arbitrary_vector2d));
   VERIFY_NEEDS_UPDATE_DRAW_PROPERTIES(
       root->SetScrollOffset(arbitrary_vector2d));
   VERIFY_NO_NEEDS_UPDATE_DRAW_PROPERTIES(
@@ skipping 85 matching lines @@
       }
     }
   }
 }
 
 class LayerImplScrollTest : public testing::Test {
  public:
   LayerImplScrollTest() : host_impl_(&proxy_), root_id_(7) {
     host_impl_.active_tree()
         ->SetRootLayer(LayerImpl::Create(host_impl_.active_tree(), root_id_));
-    host_impl_.active_tree()->root_layer()->SetScrollable(true);
+    host_impl_.active_tree()->root_layer()->AddChild(
+        LayerImpl::Create(host_impl_.active_tree(), root_id_ + 1));
+    layer()->SetScrollClipLayer(root_id_);
+    // Set the max scroll offset by noting that the root layer has bounds (1,1),
+    // thus whatever bounds are set for the layer will be the max scroll
+    // offset plus 1 in each direction.
+    host_impl_.active_tree()->root_layer()->SetBounds(gfx::Size(1, 1));
+    gfx::Vector2d max_scroll_offset(51, 81);
+    layer()->SetBounds(gfx::Size(max_scroll_offset.x(), max_scroll_offset.y()));
   }
 
-  LayerImpl* layer() { return host_impl_.active_tree()->root_layer(); }
+  LayerImpl* layer() {
+    return host_impl_.active_tree()->root_layer()->children()[0];
+  }
 
  private:
   FakeImplProxy proxy_;
   FakeLayerTreeHostImpl host_impl_;
   int root_id_;
 };
 
 TEST_F(LayerImplScrollTest, ScrollByWithZeroOffset) {
   // Test that LayerImpl::ScrollBy only affects ScrollDelta and total scroll
   // offset is bounded by the range [0, max scroll offset].
-  gfx::Vector2d max_scroll_offset(50, 80);
-  layer()->SetMaxScrollOffset(max_scroll_offset);
 
   EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->TotalScrollOffset());
   EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->scroll_offset());
   EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->ScrollDelta());
 
   layer()->ScrollBy(gfx::Vector2dF(-100, 100));
   EXPECT_VECTOR_EQ(gfx::Vector2dF(0, 80), layer()->TotalScrollOffset());
 
   EXPECT_VECTOR_EQ(layer()->ScrollDelta(), layer()->TotalScrollOffset());
   EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->scroll_offset());
 
   layer()->ScrollBy(gfx::Vector2dF(100, -100));
   EXPECT_VECTOR_EQ(gfx::Vector2dF(50, 0), layer()->TotalScrollOffset());
 
   EXPECT_VECTOR_EQ(layer()->ScrollDelta(), layer()->TotalScrollOffset());
   EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->scroll_offset());
 }
 
 TEST_F(LayerImplScrollTest, ScrollByWithNonZeroOffset) {
-  gfx::Vector2d max_scroll_offset(50, 80);
   gfx::Vector2d scroll_offset(10, 5);
-  layer()->SetMaxScrollOffset(max_scroll_offset);
   layer()->SetScrollOffset(scroll_offset);
 
   EXPECT_VECTOR_EQ(scroll_offset, layer()->TotalScrollOffset());
   EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset());
   EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->ScrollDelta());
 
   layer()->ScrollBy(gfx::Vector2dF(-100, 100));
   EXPECT_VECTOR_EQ(gfx::Vector2dF(0, 80), layer()->TotalScrollOffset());
 
   EXPECT_VECTOR_EQ(layer()->ScrollDelta() + scroll_offset,
@@ skipping 22 matching lines @@
   }
 
   virtual void SetTotalPageScaleFactor(float page_scale_factor) OVERRIDE {}
   virtual void SetScrollableSize(gfx::SizeF scrollable_size) OVERRIDE {}
 
  private:
   gfx::Vector2dF fixed_offset_;
 };
 
 TEST_F(LayerImplScrollTest, ScrollByWithIgnoringDelegate) {
-  gfx::Vector2d max_scroll_offset(50, 80);
   gfx::Vector2d scroll_offset(10, 5);
-  layer()->SetMaxScrollOffset(max_scroll_offset);
   layer()->SetScrollOffset(scroll_offset);
 
   EXPECT_VECTOR_EQ(scroll_offset, layer()->TotalScrollOffset());
   EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset());
   EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->ScrollDelta());
 
   ScrollDelegateIgnore delegate;
   gfx::Vector2dF fixed_offset(32, 12);
   delegate.set_fixed_offset(fixed_offset);
   layer()->SetScrollOffsetDelegate(&delegate);
@@ skipping 29 matching lines @@
   }
   virtual bool IsExternalFlingActive() const OVERRIDE { return false; }
   virtual void SetTotalPageScaleFactor(float page_scale_factor) OVERRIDE {}
   virtual void SetScrollableSize(gfx::SizeF scrollable_size) OVERRIDE {}
 
  private:
   gfx::Vector2dF current_offset_;
 };
 
 TEST_F(LayerImplScrollTest, ScrollByWithAcceptingDelegate) {
-  gfx::Vector2d max_scroll_offset(50, 80);
   gfx::Vector2d scroll_offset(10, 5);
-  layer()->SetMaxScrollOffset(max_scroll_offset);
   layer()->SetScrollOffset(scroll_offset);
 
   EXPECT_VECTOR_EQ(scroll_offset, layer()->TotalScrollOffset());
   EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset());
   EXPECT_VECTOR_EQ(gfx::Vector2dF(), layer()->ScrollDelta());
 
   ScrollDelegateAccept delegate;
   layer()->SetScrollOffsetDelegate(&delegate);
 
   EXPECT_VECTOR_EQ(scroll_offset, layer()->TotalScrollOffset());
@@ skipping 11 matching lines @@
   EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset());
 
   gfx::Vector2dF scroll_delta(1, 1);
   layer()->ScrollBy(scroll_delta);
 
   EXPECT_VECTOR_EQ(gfx::Vector2dF(1, 80), layer()->TotalScrollOffset());
   EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset());
 }
 
 TEST_F(LayerImplScrollTest, ApplySentScrollsNoDelegate) {
-  gfx::Vector2d max_scroll_offset(50, 80);
   gfx::Vector2d scroll_offset(10, 5);
   gfx::Vector2dF scroll_delta(20.5f, 8.5f);
   gfx::Vector2d sent_scroll_delta(12, -3);
 
-  layer()->SetMaxScrollOffset(max_scroll_offset);
   layer()->SetScrollOffset(scroll_offset);
   layer()->ScrollBy(scroll_delta);
   layer()->SetSentScrollDelta(sent_scroll_delta);
 
   EXPECT_VECTOR_EQ(scroll_offset + scroll_delta, layer()->TotalScrollOffset());
   EXPECT_VECTOR_EQ(scroll_delta, layer()->ScrollDelta());
   EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset());
   EXPECT_VECTOR_EQ(sent_scroll_delta, layer()->sent_scroll_delta());
 
   layer()->ApplySentScrollDeltasFromAbortedCommit();
 
   EXPECT_VECTOR_EQ(scroll_offset + scroll_delta, layer()->TotalScrollOffset());
   EXPECT_VECTOR_EQ(scroll_delta - sent_scroll_delta, layer()->ScrollDelta());
   EXPECT_VECTOR_EQ(scroll_offset + sent_scroll_delta, layer()->scroll_offset());
   EXPECT_VECTOR_EQ(gfx::Vector2d(), layer()->sent_scroll_delta());
 }
 
 TEST_F(LayerImplScrollTest, ApplySentScrollsWithIgnoringDelegate) {
-  gfx::Vector2d max_scroll_offset(50, 80);
   gfx::Vector2d scroll_offset(10, 5);
   gfx::Vector2d sent_scroll_delta(12, -3);
   gfx::Vector2dF fixed_offset(32, 12);
 
-  layer()->SetMaxScrollOffset(max_scroll_offset);
   layer()->SetScrollOffset(scroll_offset);
   ScrollDelegateIgnore delegate;
   delegate.set_fixed_offset(fixed_offset);
   layer()->SetScrollOffsetDelegate(&delegate);
   layer()->SetSentScrollDelta(sent_scroll_delta);
 
   EXPECT_VECTOR_EQ(fixed_offset, layer()->TotalScrollOffset());
   EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset());
   EXPECT_VECTOR_EQ(sent_scroll_delta, layer()->sent_scroll_delta());
 
   layer()->ApplySentScrollDeltasFromAbortedCommit();
 
   EXPECT_VECTOR_EQ(fixed_offset, layer()->TotalScrollOffset());
   EXPECT_VECTOR_EQ(scroll_offset + sent_scroll_delta, layer()->scroll_offset());
   EXPECT_VECTOR_EQ(gfx::Vector2d(), layer()->sent_scroll_delta());
 }
 
 TEST_F(LayerImplScrollTest, ApplySentScrollsWithAcceptingDelegate) {
-  gfx::Vector2d max_scroll_offset(50, 80);
   gfx::Vector2d scroll_offset(10, 5);
   gfx::Vector2d sent_scroll_delta(12, -3);
   gfx::Vector2dF scroll_delta(20.5f, 8.5f);
 
-  layer()->SetMaxScrollOffset(max_scroll_offset);
   layer()->SetScrollOffset(scroll_offset);
   ScrollDelegateAccept delegate;
   layer()->SetScrollOffsetDelegate(&delegate);
   layer()->ScrollBy(scroll_delta);
   layer()->SetSentScrollDelta(sent_scroll_delta);
 
   EXPECT_VECTOR_EQ(scroll_offset + scroll_delta, layer()->TotalScrollOffset());
   EXPECT_VECTOR_EQ(scroll_offset, layer()->scroll_offset());
   EXPECT_VECTOR_EQ(sent_scroll_delta, layer()->sent_scroll_delta());
 
   layer()->ApplySentScrollDeltasFromAbortedCommit();
 
   EXPECT_VECTOR_EQ(scroll_offset + scroll_delta, layer()->TotalScrollOffset());
   EXPECT_VECTOR_EQ(scroll_offset + sent_scroll_delta, layer()->scroll_offset());
   EXPECT_VECTOR_EQ(gfx::Vector2d(), layer()->sent_scroll_delta());
 }
 
 // The user-scrollability breaks for zoomed-in pages. So disable this.
 // http://crbug.com/322223
 TEST_F(LayerImplScrollTest, DISABLED_ScrollUserUnscrollableLayer) {
-  gfx::Vector2d max_scroll_offset(50, 80);
   gfx::Vector2d scroll_offset(10, 5);
   gfx::Vector2dF scroll_delta(20.5f, 8.5f);
 
   layer()->set_user_scrollable_vertical(false);
-  layer()->SetMaxScrollOffset(max_scroll_offset);
   layer()->SetScrollOffset(scroll_offset);
   gfx::Vector2dF unscrolled = layer()->ScrollBy(scroll_delta);
 
   EXPECT_VECTOR_EQ(gfx::Vector2dF(0, 8.5f), unscrolled);
   EXPECT_VECTOR_EQ(gfx::Vector2dF(30.5f, 5), layer()->TotalScrollOffset());
 }
 
 }  // namespace
 }  // namespace cc