Extracted InkDropAnimator class from InkDropAnimationController.

ui/views/animation/ink_drop_animation_controller_impl.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 UI_VIEWS_ANIMATION_INK_DROP_ANIMATION_CONTROLLER_IMPL_H_
 #define UI_VIEWS_ANIMATION_INK_DROP_ANIMATION_CONTROLLER_IMPL_H_
 
 #include "base/memory/scoped_ptr.h"
-#include "base/time/time.h"
-#include "ui/events/event_handler.h"
 #include "ui/gfx/geometry/rect.h"
 #include "ui/gfx/geometry/size.h"
 #include "ui/views/animation/ink_drop_animation_controller.h"
 #include "ui/views/views_export.h"
 
-namespace ui {
-class Layer;
-}
-
 namespace views {
-class AppearAnimationObserver;
-class InkDropDelegate;
+class InkDropAnimation;
 class InkDropHost;
-class View;
 
 // Controls an ink drop animation which is hosted by an InkDropHost.
 class VIEWS_EXPORT InkDropAnimationControllerImpl
     : public InkDropAnimationController {
  public:
   // Constructs an ink drop controller that will attach the ink drop to the
   // given |ink_drop_host|.
   explicit InkDropAnimationControllerImpl(InkDropHost* ink_drop_host);
   ~InkDropAnimationControllerImpl() override;
 
   // InkDropAnimationController:
   void AnimateToState(InkDropState state) override;
   void SetInkDropSize(const gfx::Size& size) override;
   gfx::Rect GetInkDropBounds() const override;
   void SetInkDropBounds(const gfx::Rect& bounds) override;
 
  private:
-  // Starts the animation of a touch event.
-  void AnimateTapDown();
-
-  // Schedules the hide animation of |ink_drop_layer_| for once its current
-  // animation has completed. If |ink_drop_layer_| is not animating, the hide
-  // animation begins immediately.
-  void AnimateHide();
-
-  // Starts the animation of a long press, and cancels hiding |ink_drop_layer_|
-  // until the long press has completed.
-  void AnimateLongPress();
-
-  // Starts the showing animation on |layer|, with a |duration| in milliseconds.
-  void AnimateShow(ui::Layer* layer,
-                   AppearAnimationObserver* observer,
-                   base::TimeDelta duration);
-
-  // Sets the bounds for |layer|.
-  void SetLayerBounds(ui::Layer* layer);
-
-  // Initializes |layer|'s properties.
-  void SetupAnimationLayer(ui::Layer* layer, InkDropDelegate* delegate);
-
+  // The host of the ink drop.
   InkDropHost* ink_drop_host_;
 
-  // The root layer that parents the animating layers.
-  scoped_ptr<ui::Layer> root_layer_;
-
-  // The layer used for animating a user touch.
-  scoped_ptr<ui::Layer> ink_drop_layer_;
-
-  // ui::LayerDelegate responsible for painting to |ink_drop_layer_|.
-  scoped_ptr<InkDropDelegate> ink_drop_delegate_;
-
-  // ui::ImplicitAnimationObserver which observes |ink_drop_layer_| and can be
-  // used to automatically trigger a hide animation upon completion.
-  scoped_ptr<AppearAnimationObserver> appear_animation_observer_;
-
-  // The layer used for animating a long press.
-  scoped_ptr<ui::Layer> long_press_layer_;
-
-  // ui::LayerDelegate responsible for painting to |long_press_layer_|.
-  scoped_ptr<InkDropDelegate> long_press_delegate_;
-
-  // ui::ImplicitAnimationObserver which observers |long_press_layer_| and can
-  // be used to automatically trigger a hide animation upon completion.
-  scoped_ptr<AppearAnimationObserver> long_press_animation_observer_;
-
-  // The bounds of the ink drop layers. Defined in the coordinate space of the
-  // parent ui::Layer that the ink drop layers were added to.
-  gfx::Rect ink_drop_bounds_;
+  // TODO(bruthig): It will be expensive to maintain InkDropAnimation instances
+  // when they are not actually being used. Consider creating InkDropAnimations
+  // on an as-needed basis and if construction is also expensive then consider
+  // creating an InkDropAnimationPool. See www.crbug.com/522175.
+  scoped_ptr<InkDropAnimation> ink_drop_animation_;
 
   DISALLOW_COPY_AND_ASSIGN(InkDropAnimationControllerImpl);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_ANIMATION_INK_DROP_ANIMATION_CONTROLLER_IMPL_H_