ui/views/animation/ink_drop_animation_controller_impl.h

   1 // Copyright 2015 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_VIEWS_ANIMATION_INK_DROP_ANIMATION_CONTROLLER_IMPL_H_
   6 #define UI_VIEWS_ANIMATION_INK_DROP_ANIMATION_CONTROLLER_IMPL_H_
   7
   8 #include "base/memory/scoped_ptr.h"
   9 #include "ui/gfx/geometry/rect.h"
  10 #include "ui/gfx/geometry/size.h"
  11 #include "ui/views/animation/ink_drop_animation_controller.h"
  12 #include "ui/views/views_export.h"
  13
  14 namespace views {
  15 class InkDropAnimation;
  16 class InkDropHost;
  17
  18 // Controls an ink drop animation which is hosted by an InkDropHost.
  19 class VIEWS_EXPORT InkDropAnimationControllerImpl
  20     : public InkDropAnimationController {
  21  public:
  22   // Constructs an ink drop controller that will attach the ink drop to the
  23   // given |ink_drop_host|.
  24   explicit InkDropAnimationControllerImpl(InkDropHost* ink_drop_host);
  25   ~InkDropAnimationControllerImpl() override;
  26
  27   // InkDropAnimationController:
  28   void AnimateToState(InkDropState state) override;
  29   void SetInkDropSize(const gfx::Size& size) override;
  30   gfx::Rect GetInkDropBounds() const override;
  31   void SetInkDropBounds(const gfx::Rect& bounds) override;
  32
  33  private:
  34   // The host of the ink drop.
  35   InkDropHost* ink_drop_host_;
  36
  37   // TODO(bruthig): It will be expensive to maintain InkDropAnimation instances
  38   // when they are not actually being used. Consider creating InkDropAnimations
  39   // on an as-needed basis and if construction is also expensive then consider
  40   // creating an InkDropAnimationPool. See www.crbug.com/522175.
  41   scoped_ptr<InkDropAnimation> ink_drop_animation_;
  42
  43   DISALLOW_COPY_AND_ASSIGN(InkDropAnimationControllerImpl);
  44 };
  45
  46 }  // namespace views
  47
  48 #endif  // UI_VIEWS_ANIMATION_INK_DROP_ANIMATION_CONTROLLER_IMPL_H_