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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_BASE_ANIMATION_THROB_ANIMATION_H_ | |
| 6 #define UI_BASE_ANIMATION_THROB_ANIMATION_H_ | |
| 7 | |
| 8 #include "ui/base/animation/slide_animation.h" | |
| 9 | |
| 10 namespace ui { | |
| 11 | |
| 12 // A subclass of SlideAnimation that can continually slide. All of the Animation | |
| 13 // methods behave like that of SlideAnimation: transition to the next state. | |
| 14 // The StartThrobbing method causes the ThrobAnimation to cycle between hidden | |
| 15 // and shown for a set number of cycles. | |
| 16 // | |
| 17 // A ThrobAnimation has two durations: the duration used when behavior like | |
| 18 // a SlideAnimation, and the duration used when throbbing. | |
| 19 class UI_EXPORT ThrobAnimation : public SlideAnimation { | |
| 20 public: | |
| 21 explicit ThrobAnimation(AnimationDelegate* target); | |
| 22 virtual ~ThrobAnimation() {} | |
| 23 | |
| 24 // Starts throbbing. cycles_til_stop gives the number of cycles to do before | |
| 25 // stopping. A negative value means "throb indefinitely". | |
| 26 void StartThrobbing(int cycles_til_stop); | |
| 27 | |
| 28 // Sets the duration of the slide animation when throbbing. | |
| 29 void SetThrobDuration(int duration) { throb_duration_ = duration; } | |
| 30 | |
| 31 // Overridden to reset to the slide duration. | |
| 32 virtual void Reset() OVERRIDE; | |
| 33 virtual void Reset(double value) OVERRIDE; | |
| 34 virtual void Show() OVERRIDE; | |
| 35 virtual void Hide() OVERRIDE; | |
| 36 | |
| 37 // Overridden to maintain the slide duration. | |
| 38 virtual void SetSlideDuration(int duration) OVERRIDE; | |
| 39 | |
| 40 // The number of cycles remaining until the animation stops. | |
| 41 void set_cycles_remaining(int value) { cycles_remaining_ = value; } | |
| 42 int cycles_remaining() const { return cycles_remaining_; } | |
| 43 | |
| 44 protected: | |
| 45 // Overriden to continually throb (assuming we're throbbing). | |
| 46 virtual void Step(base::TimeTicks time_now) OVERRIDE; | |
| 47 | |
| 48 private: | |
| 49 // Resets state such that we behave like SlideAnimation. | |
| 50 void ResetForSlide(); | |
| 51 | |
| 52 // Duration of the slide animation. | |
| 53 int slide_duration_; | |
| 54 | |
| 55 // Duration of the slide animation when throbbing. | |
| 56 int throb_duration_; | |
| 57 | |
| 58 // If throbbing, this is the number of cycles left. | |
| 59 int cycles_remaining_; | |
| 60 | |
| 61 // Are we throbbing? | |
| 62 bool throbbing_; | |
| 63 | |
| 64 DISALLOW_COPY_AND_ASSIGN(ThrobAnimation); | |
| 65 }; | |
| 66 | |
| 67 } // namespace ui | |
| 68 | |
| 69 #endif // UI_BASE_ANIMATION_THROB_ANIMATION_H_ | |
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