services/keyboard_native/clip_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_CLIP_ANIMATION_H_
#define SERVICES_KEYBOARD_NATIVE_CLIP_ANIMATION_H_

#include "base/macros.h"
#include "base/memory/scoped_ptr.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.h"

namespace keyboard {

class TimeInterpolator;

class ClipAnimation : public Animation {
 public:
  // Creates a clip animation starting at |start_ticks| lasting |duration| at
  // |origin| and ending at |end_radius|.  |duration| must be non-zero.
  ClipAnimation(const base::TimeTicks& start_ticks,
                const base::TimeDelta& duration,
                const gfx::Point& origin,
                const float& end_radius);
  ~ClipAnimation() override;

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

 private:
  scoped_ptr<TimeInterpolator> time_interpolator_;
  const base::TimeTicks start_ticks_;
  const base::TimeDelta duration_;
  const gfx::Point origin_;
  const float end_radius_;

  DISALLOW_COPY_AND_ASSIGN(ClipAnimation);
};

}  // namespace keyboard

#endif  // SERVICES_KEYBOARD_NATIVE_CLIP_ANIMATION_H_