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