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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_VIEWS_ANIMATION_BOUNDS_ANIMATOR_H_ | |
| 6 #define UI_VIEWS_ANIMATION_BOUNDS_ANIMATOR_H_ | |
| 7 | |
| 8 #include <map> | |
| 9 | |
| 10 #include "base/compiler_specific.h" | |
| 11 #include "base/memory/ref_counted.h" | |
| 12 #include "base/observer_list.h" | |
| 13 #include "ui/gfx/animation/animation_container_observer.h" | |
| 14 #include "ui/gfx/animation/animation_delegate.h" | |
| 15 #include "ui/gfx/animation/tween.h" | |
| 16 #include "ui/gfx/rect.h" | |
| 17 #include "ui/views/views_export.h" | |
| 18 | |
| 19 namespace gfx { | |
| 20 class SlideAnimation; | |
| 21 } | |
| 22 | |
| 23 namespace views { | |
| 24 | |
| 25 class BoundsAnimatorObserver; | |
| 26 class View; | |
| 27 | |
| 28 // Bounds animator is responsible for animating the bounds of a view from the | |
| 29 // the views current location and size to a target position and size. To use | |
| 30 // BoundsAnimator invoke AnimateViewTo for the set of views you want to | |
| 31 // animate. | |
| 32 // | |
| 33 // BoundsAnimator internally creates an animation for each view. If you need | |
| 34 // a specific animation invoke SetAnimationForView after invoking AnimateViewTo. | |
| 35 // You can attach an AnimationDelegate to the individual animation for a view | |
| 36 // by way of SetAnimationDelegate. Additionally you can attach an observer to | |
| 37 // the BoundsAnimator that is notified when all animations are complete. | |
| 38 class VIEWS_EXPORT BoundsAnimator : public gfx::AnimationDelegate, | |
| 39 public gfx::AnimationContainerObserver { | |
| 40 public: | |
| 41 explicit BoundsAnimator(View* view); | |
| 42 virtual ~BoundsAnimator(); | |
| 43 | |
| 44 // Starts animating |view| from its current bounds to |target|. If there is | |
| 45 // already an animation running for the view it's stopped and a new one | |
| 46 // started. If an AnimationDelegate has been set for |view| it is removed | |
| 47 // (after being notified that the animation was canceled). | |
| 48 void AnimateViewTo(View* view, const gfx::Rect& target); | |
| 49 | |
| 50 // Similar to |AnimateViewTo|, but does not reset the animation, only the | |
| 51 // target bounds. If |view| is not being animated this is the same as | |
| 52 // invoking |AnimateViewTo|. | |
| 53 void SetTargetBounds(View* view, const gfx::Rect& target); | |
| 54 | |
| 55 // Returns the target bounds for the specified view. If |view| is not | |
| 56 // animating its current bounds is returned. | |
| 57 gfx::Rect GetTargetBounds(View* view); | |
| 58 | |
| 59 // Sets the animation for the specified view. BoundsAnimator takes ownership | |
| 60 // of the specified animation. | |
| 61 void SetAnimationForView(View* view, gfx::SlideAnimation* animation); | |
| 62 | |
| 63 // Returns the animation for the specified view. BoundsAnimator owns the | |
| 64 // returned Animation. | |
| 65 const gfx::SlideAnimation* GetAnimationForView(View* view); | |
| 66 | |
| 67 // Stops animating the specified view. | |
| 68 void StopAnimatingView(View* view); | |
| 69 | |
| 70 // Sets the delegate for the animation for the specified view. | |
| 71 void SetAnimationDelegate(View* view, | |
| 72 scoped_ptr<gfx::AnimationDelegate> delegate); | |
| 73 | |
| 74 // Returns true if BoundsAnimator is animating the bounds of |view|. | |
| 75 bool IsAnimating(View* view) const; | |
| 76 | |
| 77 // Returns true if BoundsAnimator is animating any view. | |
| 78 bool IsAnimating() const; | |
| 79 | |
| 80 // Cancels all animations, leaving the views at their current location and | |
| 81 // size. Any views marked for deletion are deleted. | |
| 82 void Cancel(); | |
| 83 | |
| 84 // Overrides default animation duration. |duration_ms| is the new duration in | |
| 85 // milliseconds. | |
| 86 void SetAnimationDuration(int duration_ms); | |
| 87 | |
| 88 // Gets the currently used animation duration. | |
| 89 int GetAnimationDuration() const { return animation_duration_ms_; } | |
| 90 | |
| 91 // Sets the tween type for new animations. Default is EASE_OUT. | |
| 92 void set_tween_type(gfx::Tween::Type type) { tween_type_ = type; } | |
| 93 | |
| 94 void AddObserver(BoundsAnimatorObserver* observer); | |
| 95 void RemoveObserver(BoundsAnimatorObserver* observer); | |
| 96 | |
| 97 protected: | |
| 98 // Creates the animation to use for animating views. | |
| 99 virtual gfx::SlideAnimation* CreateAnimation(); | |
| 100 | |
| 101 private: | |
| 102 // Tracks data about the view being animated. | |
| 103 struct Data { | |
| 104 Data() : animation(NULL), delegate(NULL) {} | |
| 105 | |
| 106 // The initial bounds. | |
| 107 gfx::Rect start_bounds; | |
| 108 | |
| 109 // Target bounds. | |
| 110 gfx::Rect target_bounds; | |
| 111 | |
| 112 // The animation. We own this. | |
| 113 gfx::SlideAnimation* animation; | |
| 114 | |
| 115 // Delegate for the animation, may be null. We own this. | |
| 116 gfx::AnimationDelegate* delegate; | |
| 117 }; | |
| 118 | |
| 119 // Used by AnimationEndedOrCanceled. | |
| 120 enum AnimationEndType { | |
| 121 ANIMATION_ENDED, | |
| 122 ANIMATION_CANCELED | |
| 123 }; | |
| 124 | |
| 125 typedef std::map<View*, Data> ViewToDataMap; | |
| 126 | |
| 127 typedef std::map<const gfx::Animation*, View*> AnimationToViewMap; | |
| 128 | |
| 129 // Removes references to |view| and its animation. This does NOT delete the | |
| 130 // animation or delegate. | |
| 131 void RemoveFromMaps(View* view); | |
| 132 | |
| 133 // Does the necessary cleanup for |data|. If |send_cancel| is true and a | |
| 134 // delegate has been installed on |data| AnimationCanceled is invoked on it. | |
| 135 void CleanupData(bool send_cancel, Data* data, View* view); | |
| 136 | |
| 137 // Used when changing the animation for a view. This resets the maps for | |
| 138 // the animation used by view and returns the current animation. Ownership | |
| 139 // of the returned animation passes to the caller. | |
| 140 gfx::Animation* ResetAnimationForView(View* view); | |
| 141 | |
| 142 // Invoked from AnimationEnded and AnimationCanceled. | |
| 143 void AnimationEndedOrCanceled(const gfx::Animation* animation, | |
| 144 AnimationEndType type); | |
| 145 | |
| 146 // gfx::AnimationDelegate overrides. | |
| 147 virtual void AnimationProgressed(const gfx::Animation* animation) override; | |
| 148 virtual void AnimationEnded(const gfx::Animation* animation) override; | |
| 149 virtual void AnimationCanceled(const gfx::Animation* animation) override; | |
| 150 | |
| 151 // gfx::AnimationContainerObserver overrides. | |
| 152 virtual void AnimationContainerProgressed( | |
| 153 gfx::AnimationContainer* container) override; | |
| 154 virtual void AnimationContainerEmpty( | |
| 155 gfx::AnimationContainer* container) override; | |
| 156 | |
| 157 // Parent of all views being animated. | |
| 158 View* parent_; | |
| 159 | |
| 160 ObserverList<BoundsAnimatorObserver> observers_; | |
| 161 | |
| 162 // All animations we create up with the same container. | |
| 163 scoped_refptr<gfx::AnimationContainer> container_; | |
| 164 | |
| 165 // Maps from view being animated to info about the view. | |
| 166 ViewToDataMap data_; | |
| 167 | |
| 168 // Maps from animation to view. | |
| 169 AnimationToViewMap animation_to_view_; | |
| 170 | |
| 171 // As the animations we create update (AnimationProgressed is invoked) this | |
| 172 // is updated. When all the animations have completed for a given tick of | |
| 173 // the timer (AnimationContainerProgressed is invoked) the parent_ is asked | |
| 174 // to repaint these bounds. | |
| 175 gfx::Rect repaint_bounds_; | |
| 176 | |
| 177 int animation_duration_ms_; | |
| 178 | |
| 179 gfx::Tween::Type tween_type_; | |
| 180 | |
| 181 DISALLOW_COPY_AND_ASSIGN(BoundsAnimator); | |
| 182 }; | |
| 183 | |
| 184 } // namespace views | |
| 185 | |
| 186 #endif // UI_VIEWS_ANIMATION_BOUNDS_ANIMATOR_H_ | |
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