cc : Track opacity animation changes on effect tree

cc/trees/layer_tree_host_common_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/trees/layer_tree_host_common.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <memory>
@@ skipping 9796 matching lines @@
   is_inf_or_nan = std::isinf(child->DrawTransform().matrix().get(1, 1)) ||
                   std::isnan(child->DrawTransform().matrix().get(1, 1));
   EXPECT_TRUE(is_inf_or_nan);
 
   std::vector<LayerImpl*>* rsll = render_surface_layer_list_impl();
   bool root_in_rsll =
       std::find(rsll->begin(), rsll->end(), root) != rsll->end();
   EXPECT_TRUE(root_in_rsll);
 }
 
+TEST_F(LayerTreeHostCommonTest, OpacityAnimationsTrackingTest) {
+  const gfx::Transform identity_matrix;
+  scoped_refptr<Layer> root = Layer::Create();
+  scoped_refptr<LayerWithForcedDrawsContent> animated =
+      make_scoped_refptr(new LayerWithForcedDrawsContent());
+  root->AddChild(animated);
+
+  host()->SetRootLayer(root);
+
+  SetLayerPropertiesForTesting(root.get(), identity_matrix, gfx::Point3F(),
+                               gfx::PointF(), gfx::Size(100, 100), true, false);
+  SetLayerPropertiesForTesting(animated.get(), identity_matrix, gfx::Point3F(),
+                               gfx::PointF(), gfx::Size(20, 20), true, false);
+
+  root->SetForceRenderSurfaceForTesting(true);
+  animated->SetOpacity(0.f);
+
+  scoped_refptr<AnimationPlayer> player =
+      AnimationPlayer::Create(AnimationIdProvider::NextPlayerId());
+  timeline()->AttachPlayer(player);
+  player->AttachElement(animated->id());
+
+  AddOpacityTransitionToPlayer(player.get(), 10.0, 0.f, 1.f, false);
+  ExecuteCalculateDrawPropertiesWithPropertyTrees(root.get());
+
+  EffectTree& tree = root->layer_tree_host()->property_trees()->effect_tree;
+  EffectNode* node = tree.Node(animated->effect_tree_index());
+  EXPECT_TRUE(node->data.is_currently_animating_opacity);
+  EXPECT_TRUE(node->data.has_potential_opacity_animation);
+
+  root->layer_tree_host()->AnimateLayers(
+      base::TimeTicks::FromInternalValue(std::numeric_limits<int64_t>::max()));
+  node = tree.Node(animated->effect_tree_index());
+  EXPECT_TRUE(node->data.is_currently_animating_opacity);
+  EXPECT_TRUE(node->data.has_potential_opacity_animation);
+
+  player->AbortAnimations(TargetProperty::OPACITY, false /*needs_completion*/);
+  node = tree.Node(animated->effect_tree_index());
+  EXPECT_FALSE(node->data.is_currently_animating_opacity);
+  EXPECT_FALSE(node->data.has_potential_opacity_animation);

[ajuma, 2016/05/09 16:56:55]

Please also test the case where currently-animating is false but
potentially-animating is true.

[jaydasika, 2016/05/10 20:22:29]

Done.

+}
+
 TEST_F(LayerTreeHostCommonTest, SerializeScrollUpdateInfo) {
   LayerTreeHostCommon::ScrollUpdateInfo scroll;
   scroll.layer_id = 2;
   scroll.scroll_delta = gfx::Vector2d(5, 10);
 
   proto::ScrollUpdateInfo proto;
   scroll.ToProtobuf(&proto);
   LayerTreeHostCommon::ScrollUpdateInfo new_scroll;
   new_scroll.FromProtobuf(proto);
 
@@ skipping 212 matching lines @@
   EXPECT_EQ(scroll_child6.id, grand_child10->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, parent3->scroll_tree_index());
   EXPECT_EQ(scroll_child7.id, child8->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, parent4->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, child9->scroll_tree_index());
   EXPECT_EQ(scroll_root1.id, grand_child12->scroll_tree_index());
 }
 
 }  // namespace
 }  // namespace cc