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// Copyright 2008, Google Inc.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
// * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#ifndef CHROME_COMMON_THROB_ANIMATION_H_
#define CHROME_COMMON_THROB_ANIMATION_H_
#include "chrome/common/slide_animation.h"
// A subclass of SlideAnimation that can continually slide. All of the Animation
// methods behave like that of SlideAnimation: transition to the next state.
// The StartThrobbing method causes the ThrobAnimation to cycle between hidden
// and shown for a set number of cycles.
//
// A ThrobAnimation has two durations: the duration used when behavior like
// a SlideAnimation, and the duration used when throbbing.
class ThrobAnimation : public SlideAnimation {
public:
explicit ThrobAnimation(AnimationDelegate* target);
virtual ~ThrobAnimation() {}
// Starts throbbing. cycles_til_stop gives the number of cycles to do before
// stopping.
void StartThrobbing(int cycles_til_stop);
// Sets the duration of the slide animation when throbbing.
void SetThrobDuration(int duration) { throb_duration_ = duration; }
// Overridden to reset to the slide duration.
virtual void Reset();
virtual void Show();
virtual void Hide();
// Overriden to continually throb (assuming we're throbbing).
virtual void Run();
// Overridden to maintain the slide duration.
virtual void SetSlideDuration(int duration) { slide_duration_ = duration; }
private:
// Resets state such that we behave like SlideAnimation.
void ResetForSlide();
// Duration of the slide animation.
int slide_duration_;
// Duration of the slide animation when throbbing.
int throb_duration_;
// If throbbing, this is the number of cycles left.
int cycles_remaining_;
// Are we throbbing?
bool throbbing_;
DISALLOW_EVIL_CONSTRUCTORS(ThrobAnimation);
};
#endif // CHROME_COMMON_THROB_ANIMATION_H_
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