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// Copyright 2013 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 CHROME_BROWSER_UI_AUTOFILL_LOADING_ANIMATION_H_
#define CHROME_BROWSER_UI_AUTOFILL_LOADING_ANIMATION_H_
#include "ui/gfx/animation/linear_animation.h"
namespace autofill {
// An animation for a dancing ellipsis.
class LoadingAnimation : public gfx::LinearAnimation {
public:
explicit LoadingAnimation(gfx::AnimationDelegate* delegate,
int font_height);
virtual ~LoadingAnimation();
// gfx::Animation implementation.
virtual void Step(base::TimeTicks time_now) OVERRIDE;
// Returns the vertical pixel offset for the nth dot.
double GetCurrentValueForDot(size_t dot_i) const;
// Stops this animation. Use this instead of Stop() to make sure future
// runs don't mess up on the first cycle.
void Reset();
private:
// Describes a frame of the animation, a la -webkit-keyframes.
struct AnimationFrame {
double value;
double position;
};
// True if the current cycle is the first one since Reset() was last called.
bool first_cycle_;
// The font height of the loading text, which gives the factor by which to
// scale the animation.
const int font_height_;
};
} // namespace autofill
#endif // CHROME_BROWSER_UI_AUTOFILL_LOADING_ANIMATION_H_
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