| // Copyright 2014 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 UI_COMPOSITOR_LAYER_ANIMATOR_COLLECTION_H_ |
| #define UI_COMPOSITOR_LAYER_ANIMATOR_COLLECTION_H_ |
| |
| #include <set> |
| |
| #include "base/callback.h" |
| #include "base/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "base/time/time.h" |
| #include "ui/compositor/compositor_animation_observer.h" |
| #include "ui/compositor/compositor_export.h" |
| |
| namespace ui { |
| |
| class Compositor; |
| class LayerAnimator; |
| |
| // A collection of LayerAnimators that should be updated at each animation step |
| // in the compositor. |
| class COMPOSITOR_EXPORT LayerAnimatorCollection |
| : public CompositorAnimationObserver { |
| public: |
| explicit LayerAnimatorCollection(Compositor* compositor); |
| ~LayerAnimatorCollection() override; |
| |
| void StartAnimator(scoped_refptr<LayerAnimator> animator); |
| void StopAnimator(scoped_refptr<LayerAnimator> animator); |
| |
| bool HasActiveAnimators() const; |
| |
| base::TimeTicks last_tick_time() const { return last_tick_time_; } |
| |
| // CompositorAnimationObserver: |
| void OnAnimationStep(base::TimeTicks timestamp) override; |
| void OnCompositingShuttingDown(Compositor* compositor) override; |
| |
| private: |
| Compositor* compositor_; |
| base::TimeTicks last_tick_time_; |
| std::set<scoped_refptr<LayerAnimator> > animators_; |
| |
| DISALLOW_COPY_AND_ASSIGN(LayerAnimatorCollection); |
| }; |
| |
| } // namespace ui |
| |
| #endif // UI_COMPOSITOR_LAYER_ANIMATOR_COLLECTION_H_ |