cc/animation/layer_animation_value_observer.h

   1 // Copyright 2012 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 #ifndef CC_ANIMATION_LAYER_ANIMATION_VALUE_OBSERVER_H_
   6 #define CC_ANIMATION_LAYER_ANIMATION_VALUE_OBSERVER_H_
   7
   8 #include "cc/base/cc_export.h"
   9
  10 namespace gfx {
  11 class ScrollOffset;
  12 class Transform;
  13 }
  14
  15 namespace cc {
  16
  17 class FilterOperations;
  18
  19 class CC_EXPORT LayerAnimationValueObserver {
  20  public:
  21   virtual ~LayerAnimationValueObserver() {}
  22
  23   virtual void OnFilterAnimated(const FilterOperations& filters) = 0;
  24   virtual void OnOpacityAnimated(float opacity) = 0;
  25   virtual void OnTransformAnimated(const gfx::Transform& transform) = 0;
  26   virtual void OnScrollOffsetAnimated(
  27       const gfx::ScrollOffset& scroll_offset) = 0;
  28   virtual void OnAnimationWaitingForDeletion() = 0;
  29   virtual void OnTransformIsPotentiallyAnimatingChanged(bool is_animating) = 0;
  30   virtual bool IsActive() const = 0;
  31 };
  32
  33 }  // namespace cc
  34
  35 #endif  // CC_ANIMATION_LAYER_ANIMATION_VALUE_OBSERVER_H_