ash: Refactor autoclick common code to ash/autoclick/common.

chrome/browser/chromeos/ui/autoclick_ring_handler.h

-// Copyright (c) 2016 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_CHROMEOS_UI_AUTOCLICK_RING_HANDLER_H_
-#define CHROME_BROWSER_CHROMEOS_UI_AUTOCLICK_RING_HANDLER_H_
-
-#include <memory>
-
-#include "ash/autoclick/autoclick_controller.h"
-#include "base/macros.h"
-#include "base/timer/timer.h"
-#include "ui/aura/window_observer.h"
-#include "ui/events/event.h"
-#include "ui/gfx/animation/linear_animation.h"
-#include "ui/gfx/geometry/point.h"
-
-namespace chromeos {
-
-// AutoclickRingHandler displays an animated affordance that is shown
-// on autoclick gesture. The animation sequence consists of two circles which
-// shrink towards the spot the autoclick will generate a mouse event.
-class AutoclickRingHandler : public gfx::LinearAnimation,
-                             public aura::WindowObserver,
-                             public ash::AutoclickController::Delegate {
- public:
-  AutoclickRingHandler();
-  ~AutoclickRingHandler() override;
-
- private:
-  // Overriden from ash::AutoclickController::Delegate.
-  void StartGesture(base::TimeDelta duration,
-                    const gfx::Point& center_point_in_screen) override;
-  void StopGesture() override;
-  void SetGestureCenter(const gfx::Point& center_point_in_screen) override;
-
-  class AutoclickRingView;
-
-  enum class AnimationType {
-    NONE,
-    GROW_ANIMATION,
-    SHRINK_ANIMATION,
-  };
-
-  aura::Window* GetTargetWindow();
-  void SetTapDownTarget();
-  void StartAnimation(base::TimeDelta duration);
-  void StopAutoclickRing();
-  void SetTapDownTarget(aura::Window* target);
-
-  // Overridden from gfx::LinearAnimation.
-  void AnimateToState(double state) override;
-  void AnimationStopped() override;
-
-  // Overridden from aura::WindowObserver.
-  void OnWindowDestroying(aura::Window* window) override;
-
-  std::unique_ptr<AutoclickRingView> view_;
-  // Location of the simulated mouse event from auto click in screen
-  // coordinates.
-  gfx::Point tap_down_location_;
-  // The target window is observed by AutoclickRingHandler for the duration of
-  // a autoclick gesture.
-  aura::Window* tap_down_target_;
-  AnimationType current_animation_type_;
-  base::TimeDelta animation_duration_;
-
-  DISALLOW_COPY_AND_ASSIGN(AutoclickRingHandler);
-};
-
-}  // namespace chromeos
-
-#endif  // CHROME_BROWSER_CHROMEOS_UI_AUTOCLICK_RING_HANDLER_H_