ash/display/shared_display_edge_indicator.h

   1 // Copyright (c) 2012 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 ASH_DISPLAY_SHARED_DISPLAY_EDGE_INDICATOR_H_
   6 #define ASH_DISPLAY_SHARED_DISPLAY_EDGE_INDICATOR_H_
   7
   8 #include "ash/ash_export.h"
   9 #include "base/basictypes.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "ui/base/animation/animation_delegate.h"
  12 #include "ui/gfx/display.h"
  13
  14 namespace gfx {
  15 class Rect;
  16 }
  17
  18 namespace ui {
  19 class ThrobAnimation;
  20 }
  21
  22 namespace views {
  23 class View;
  24 class Widget;
  25 }
  26
  27 namespace ash {
  28 namespace internal {
  29
  30 // SharedDisplayEdgeIndicator is responsible for showing a window that indicates
  31 // the edge that a window can be dragged into another display.
  32 class ASH_EXPORT SharedDisplayEdgeIndicator : public ui::AnimationDelegate {
  33  public:
  34   SharedDisplayEdgeIndicator();
  35   virtual ~SharedDisplayEdgeIndicator();
  36
  37   // Shows/Hides the indicator window. The |src_bounds| is for the window on
  38   // the source display, and the |dst_bounds| is for the window on the other
  39   // display.
  40   void Show(const gfx::Rect& src_bounds, const gfx::Rect& dst_bounds);
  41   void Hide();
  42
  43   // ui::AnimationDelegate overrides:
  44   virtual void AnimationProgressed(const ui::Animation* animation) OVERRIDE;
  45
  46  private:
  47   // Used to show the displays' shared edge where a window can be moved across.
  48   // |src_widget_| is for the display where drag starts and |dst_widget_| is
  49   // for the other display.
  50   views::View* src_indicator_;
  51   views::View* dst_indicator_;
  52
  53   // Used to transition the opacity.
  54   scoped_ptr<ui::ThrobAnimation> animation_;
  55
  56   DISALLOW_COPY_AND_ASSIGN(SharedDisplayEdgeIndicator);
  57 };
  58
  59 }  // namespace internal
  60 }  // namespace ash
  61
  62 #endif  // ASH_DISPLAY_SHARED_DISPLAY_EDGE_INDICATOR_H_