services/keyboard_native/motion_decay_animation.h

// Copyright 2015 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 SERVICES_KEYBOARD_NATIVE_MOTION_DECAY_ANIMATION_H_
#define SERVICES_KEYBOARD_NATIVE_MOTION_DECAY_ANIMATION_H_

#include "base/macros.h"
#include "base/time/time.h"
#include "services/keyboard_native/animation.h"
#include "third_party/skia/include/core/SkCanvas.h"
#include "ui/gfx/geometry/point_f.h"

namespace keyboard {

class MotionDecayAnimation : public Animation {
 public:
  // Creates a motion decay animation starting at |start_ticks| lasting
  // |duration| for
  // a line from |start| to |end|.  |duration| must be non-zero.
  MotionDecayAnimation(const base::TimeTicks& start_ticks,
                       const base::TimeDelta& duration,
                       const gfx::PointF& start,
                       const gfx::PointF& end);
  ~MotionDecayAnimation() override;

  // Animation implementation.
  void Draw(SkCanvas* canvas, const base::TimeTicks& current_ticks) override;
  bool IsDone(const base::TimeTicks& current_ticks) override;

 private:
  const base::TimeTicks start_ticks_;
  const base::TimeDelta duration_;
  const gfx::PointF start_;
  const gfx::PointF end_;

  DISALLOW_COPY_AND_ASSIGN(MotionDecayAnimation);
};

}  // namespace keyboard

#endif  // SERVICES_KEYBOARD_NATIVE_MOTION_DECAY_ANIMATION_H_