ash/screen_ash.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_SCREEN_ASH_H_
   6 #define ASH_SCREEN_ASH_H_
   7
   8 #include "ash/ash_export.h"
   9 #include "base/compiler_specific.h"
  10 #include "base/observer_list.h"
  11 #include "ui/gfx/screen.h"
  12
  13 namespace gfx {
  14 class Rect;
  15 }
  16
  17 namespace ash {
  18
  19 // Aura implementation of gfx::Screen. Implemented here to avoid circular
  20 // dependencies.
  21 class ASH_EXPORT ScreenAsh : public gfx::Screen {
  22  public:
  23   ScreenAsh();
  24   virtual ~ScreenAsh();
  25
  26   // Finds the display that contains |point| in screeen coordinates.
  27   // Returns invalid display if there is no display that can satisfy
  28   // the condition.
  29   static gfx::Display FindDisplayContainingPoint(const gfx::Point& point);
  30
  31   // Returns the bounds for maximized windows in parent coordinates.
  32   // Maximized windows trigger auto-hiding the shelf.
  33   static gfx::Rect GetMaximizedWindowBoundsInParent(aura::Window* window);
  34
  35   // Returns the display bounds in parent coordinates.
  36   static gfx::Rect GetDisplayBoundsInParent(aura::Window* window);
  37
  38   // Returns the display's work area bounds in parent coordinates.
  39   static gfx::Rect GetDisplayWorkAreaBoundsInParent(aura::Window* window);
  40
  41   // Converts |rect| from |window|'s coordinates to the virtual screen
  42   // coordinates.
  43   static gfx::Rect ConvertRectToScreen(aura::Window* window,
  44                                        const gfx::Rect& rect);
  45
  46   // Converts |rect| from virtual screen coordinates to the |window|'s
  47   // coordinates.
  48   static gfx::Rect ConvertRectFromScreen(aura::Window* window,
  49                                          const gfx::Rect& rect);
  50
  51   // Returns a gfx::Display object for secondary display. Returns
  52   // invalid display if there is no secondary display connected.
  53   static const gfx::Display& GetSecondaryDisplay();
  54
  55   // Returns a gfx::Display object for the specified id.  Returns
  56   // invalid display if no such display is connected.
  57   static const gfx::Display& GetDisplayForId(int64 display_id);
  58
  59   // Notifies observers of display configuration changes.
  60   void NotifyBoundsChanged(const gfx::Display& display);
  61   void NotifyDisplayAdded(const gfx::Display& display);
  62   void NotifyDisplayRemoved(const gfx::Display& display);
  63
  64  protected:
  65   // Implementation of gfx::Screen:
  66   virtual bool IsDIPEnabled() OVERRIDE;
  67   virtual gfx::Point GetCursorScreenPoint() OVERRIDE;
  68   virtual gfx::NativeWindow GetWindowAtCursorScreenPoint() OVERRIDE;
  69   virtual int GetNumDisplays() OVERRIDE;
  70   virtual gfx::Display GetDisplayNearestWindow(
  71       gfx::NativeView view) const OVERRIDE;
  72   virtual gfx::Display GetDisplayNearestPoint(
  73       const gfx::Point& point) const OVERRIDE;
  74   virtual gfx::Display GetDisplayMatching(
  75       const gfx::Rect& match_rect) const OVERRIDE;
  76   virtual gfx::Display GetPrimaryDisplay() const OVERRIDE;
  77   virtual void AddObserver(gfx::DisplayObserver* observer) OVERRIDE;
  78   virtual void RemoveObserver(gfx::DisplayObserver* observer) OVERRIDE;
  79
  80  private:
  81   ObserverList<gfx::DisplayObserver> observers_;
  82
  83   DISALLOW_COPY_AND_ASSIGN(ScreenAsh);
  84 };
  85
  86 }  // namespace ash
  87
  88 #endif  // ASH_SCREEN_ASH_H_