cc : Track opacity animation changes on effect tree

cc/animation/element_animations.h

 // Copyright 2015 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.
 
 #ifndef CC_ANIMATION_ELEMENT_ANIMATIONS_H_
 #define CC_ANIMATION_ELEMENT_ANIMATIONS_H_
 
 #include <bitset>
 #include <memory>
 #include <vector>
@@ skipping 16 matching lines @@
 
 namespace cc {
 
 class AnimationDelegate;
 class AnimationEvents;
 class AnimationHost;
 class AnimationPlayer;
 class FilterOperations;
 class KeyframeValueList;
 enum class ElementListType;
+enum class AnimationChangeType;
 
 // An ElementAnimations owns a list of all AnimationPlayers, attached to
 // the element.
 // This is a CC counterpart for blink::ElementAnimations (in 1:1 relationship).
 // No pointer to/from respective blink::ElementAnimations object for now.
 class CC_EXPORT ElementAnimations : public base::RefCounted<ElementAnimations> {
  public:
   static scoped_refptr<ElementAnimations> Create();
 
   ElementId element_id() const { return element_id_; }
@@ skipping 175 matching lines @@
                                         bool notify_pending_elements);
 
   void NotifyClientAnimationWaitingForDeletion();
 
   void NotifyClientTransformIsPotentiallyAnimatingChanged(
       bool notify_active_elements,
       bool notify_pending_elements);
 
   void UpdatePotentiallyAnimatingTransform();
 
+  void NotifyClientOpacityAnimationChanged(
+      bool notify_active_elements_about_potential_animation,
+      bool notify_active_elements_about_running_animation,
+      bool notify_pending_elements_about_potential_aniamtion,
+      bool notify_pending_elements_about_running_animation);
+
+  void UpdateAnimatingOpacity();
+
   void OnFilterAnimated(ElementListType list_type,
                         const FilterOperations& filters);
   void OnOpacityAnimated(ElementListType list_type, float opacity);
   void OnTransformAnimated(ElementListType list_type,
                            const gfx::Transform& transform);
   void OnScrollOffsetAnimated(ElementListType list_type,
                               const gfx::ScrollOffset& scroll_offset);
   void OnAnimationWaitingForDeletion();
   void OnTransformIsPotentiallyAnimatingChanged(ElementListType list_type,
                                                 bool is_animating);
+  void OnOpacityIsAnimatingChanged(ElementListType list_type,
+                                   AnimationChangeType change_type,
+                                   bool is_animating);
   gfx::ScrollOffset ScrollOffsetForAnimation() const;
 
   void NotifyPlayersAnimationStarted(base::TimeTicks monotonic_time,
                                      TargetProperty::Type target_property,
                                      int group);
   void NotifyPlayersAnimationFinished(base::TimeTicks monotonic_time,
                                       TargetProperty::Type target_property,
                                       int group);
   void NotifyPlayersAnimationAborted(base::TimeTicks monotonic_time,
                                      TargetProperty::Type target_property,
@@ skipping 19 matching lines @@
 
   // Only try to start animations when new animations are added or when the
   // previous attempt at starting animations failed to start all animations.
   bool needs_to_start_animations_;
 
   bool scroll_offset_animation_was_interrupted_;
 
   bool potentially_animating_transform_for_active_elements_;
   bool potentially_animating_transform_for_pending_elements_;
 
+  bool currently_running_opacity_animation_for_active_elements_;
+  bool currently_running_opacity_animation_for_pending_elements_;
+  bool potentially_animating_opacity_for_active_elements_;
+  bool potentially_animating_opacity_for_pending_elements_;
+
   DISALLOW_COPY_AND_ASSIGN(ElementAnimations);
 };
 
 }  // namespace cc
 
 #endif  // CC_ANIMATION_ELEMENT_ANIMATIONS_H_