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| 1 // Copyright (c) 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 UI_COMPOSITOR_SCOPED_LAYER_ANIMATION_SETTINGS_H_ | |
| 6 #define UI_COMPOSITOR_SCOPED_LAYER_ANIMATION_SETTINGS_H_ | |
| 7 | |
| 8 #include <set> | |
| 9 | |
| 10 #include "base/memory/scoped_vector.h" | |
| 11 #include "base/time/time.h" | |
| 12 | |
| 13 #include "ui/compositor/compositor_export.h" | |
| 14 #include "ui/compositor/layer_animator.h" | |
| 15 #include "ui/gfx/animation/tween.h" | |
| 16 | |
| 17 namespace ui { | |
| 18 | |
| 19 class ImplicitAnimationObserver; | |
| 20 class LayerAnimationObserver; | |
| 21 class InvertingObserver; | |
| 22 | |
| 23 // Scoped settings allow you to temporarily change the animator's settings and | |
| 24 // these changes are reverted when the object is destroyed. NOTE: when the | |
| 25 // settings object is created, it applies the default transition duration | |
| 26 // (200ms). | |
| 27 class COMPOSITOR_EXPORT ScopedLayerAnimationSettings { | |
| 28 public: | |
| 29 explicit ScopedLayerAnimationSettings(scoped_refptr<LayerAnimator> animator); | |
| 30 virtual ~ScopedLayerAnimationSettings(); | |
| 31 | |
| 32 void AddObserver(ImplicitAnimationObserver* observer); | |
| 33 | |
| 34 void SetTransitionDuration(base::TimeDelta duration); | |
| 35 base::TimeDelta GetTransitionDuration() const; | |
| 36 | |
| 37 // Locks transition duration in |animator_|. When transition duration | |
| 38 // is locked any subsequent changes to it are ignored until the | |
| 39 // ScopedLayerAnimationSettings object that has locked the duration goes out | |
| 40 // of scope. | |
| 41 void LockTransitionDuration(); | |
| 42 | |
| 43 void SetTweenType(gfx::Tween::Type tween_type); | |
| 44 gfx::Tween::Type GetTweenType() const; | |
| 45 | |
| 46 void SetPreemptionStrategy(LayerAnimator::PreemptionStrategy strategy); | |
| 47 LayerAnimator::PreemptionStrategy GetPreemptionStrategy() const; | |
| 48 | |
| 49 // Sets the base layer whose animation will be countered. | |
| 50 void SetInverselyAnimatedBaseLayer(Layer* base); | |
| 51 | |
| 52 // Adds the layer to be counter-animated when a transform animation is | |
| 53 // scheduled on the animator_. Must call SetInverselyAnimatedBaseLayer with | |
| 54 // the layer associated with animator_ before animating. | |
| 55 void AddInverselyAnimatedLayer(Layer* inverse_layer); | |
| 56 | |
| 57 private: | |
| 58 scoped_refptr<LayerAnimator> animator_; | |
| 59 bool old_is_transition_duration_locked_; | |
| 60 base::TimeDelta old_transition_duration_; | |
| 61 gfx::Tween::Type old_tween_type_; | |
| 62 LayerAnimator::PreemptionStrategy old_preemption_strategy_; | |
| 63 std::set<ImplicitAnimationObserver*> observers_; | |
| 64 scoped_ptr<InvertingObserver> inverse_observer_; | |
| 65 | |
| 66 DISALLOW_COPY_AND_ASSIGN(ScopedLayerAnimationSettings); | |
| 67 }; | |
| 68 | |
| 69 } // namespace ui | |
| 70 | |
| 71 #endif // UI_COMPOSITOR_SCOPED_LAYER_ANIMATION_SETTINGS_H_ | |
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