| // 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); |
| ~LoadingAnimation() override; |
| |
| // gfx::Animation implementation. |
| 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_ |