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 namespace internal { 26 27 // SharedDisplayEdgeIndicator is responsible for showing a window that indicates 28 // the edge that a window can be dragged into another display. 29 class ASH_EXPORT SharedDisplayEdgeIndicator : public gfx::AnimationDelegate { 30 public: 31 SharedDisplayEdgeIndicator(); 32 virtual ~SharedDisplayEdgeIndicator(); 33 34 // Shows/Hides the indicator window. The |src_bounds| is for the window on 35 // the source display, and the |dst_bounds| is for the window on the other 36 // display. 37 void Show(const gfx::Rect& src_bounds, const gfx::Rect& dst_bounds); 38 void Hide(); 39 40 // gfx::AnimationDelegate overrides: 41 virtual void AnimationProgressed(const gfx::Animation* animation) OVERRIDE; 42 43 private: 44 // Used to show the displays' shared edge where a window can be moved across. 45 // |src_widget_| is for the display where drag starts and |dst_widget_| is 46 // for the other display. 47 views::View* src_indicator_; 48 views::View* dst_indicator_; 49 50 // Used to transition the opacity. 51 scoped_ptr<gfx::ThrobAnimation> animation_; 52 53 DISALLOW_COPY_AND_ASSIGN(SharedDisplayEdgeIndicator); 54 }; 55 56 } // namespace internal 57 } // namespace ash 58 59 #endif // ASH_DISPLAY_SHARED_DISPLAY_EDGE_INDICATOR_H_ 60