Switch primary display

ash/display/display_controller.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef ASH_DISPLAY_DISPLAY_CONTROLLER_H_
 #define ASH_DISPLAY_DISPLAY_CONTROLLER_H_
 
 #include <map>
 #include <vector>
 
 #include "ash/ash_export.h"
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
 #include "base/observer_list.h"
 #include "ui/aura/display_observer.h"
 #include "ui/aura/display_manager.h"
+#include "ui/gfx/display.h"
 
 namespace aura {
 class Display;
 class RootWindow;
 }
 
 namespace base {
 class Value;
 template <typename T> class JSONValueConverter;
 }
 
 namespace ash {
 namespace internal {
 class RootWindowController;
 }
 
 struct ASH_EXPORT DisplayLayout {
   // Layout options where the secondary display should be positioned.
   enum Position {
     TOP,
     RIGHT,
     BOTTOM,
     LEFT
   };
 
   DisplayLayout();
   DisplayLayout(Position position, int offset);
 
+  // Returns an inverted display layout.
+  DisplayLayout Invert() const WARN_UNUSED_RESULT;
+
   // Converter functions to/from base::Value.
   static bool ConvertFromValue(const base::Value& value, DisplayLayout* layout);
   static bool ConvertToValue(const DisplayLayout& layout, base::Value* value);
 
   // This method is used by base::JSONValueConverter, you don't need to call
   // this directly. Instead consider using converter functions above.
   static void RegisterJSONConverter(
       base::JSONValueConverter<DisplayLayout>* converter);
 
   Position position;
 
   // The offset of the position of the secondary display.  The offset is
   // based on the top/left edge of the primary display.
   int offset;
+
+  // Returns string representation of the layout for debugging/testing.
+  std::string ToString() const;
 };
 
 // DisplayController owns and maintains RootWindows for each attached
 // display, keeping them in sync with display configuration changes.
 class ASH_EXPORT DisplayController : public aura::DisplayObserver {
  public:
   class ASH_EXPORT Observer {
    public:
     // Invoked when the display configuration change is requested,
     // but before the change is applied to aura/ash.
@@ skipping 15 matching lines @@
   // Add/Remove observers.
   void AddObserver(Observer* observer);
   void RemoveObserver(Observer* observer);
 
   // Returns the root window for primary display.
   aura::RootWindow* GetPrimaryRootWindow();
 
   // Returns the root window for |display_id|.
   aura::RootWindow* GetRootWindowForDisplayId(int64 id);
 
+  // Sets/Gets primary display.
+  const gfx::Display& primary_display() const {
+    return primary_display_;
+  }
+  void SetPrimaryDisplay(const gfx::Display& display);
+
+  // Returns the secondary display.
+  gfx::Display* GetSecondaryDisplay();
+
   // Closes all child windows in the all root windows.
   void CloseChildWindows();
 
   // Returns all root windows. In non extended desktop mode, this
   // returns the primary root window only.
   std::vector<aura::RootWindow*> GetAllRootWindows();
 
   // Returns all oot window controllers. In non extended desktop
   // mode, this return a RootWindowController for the primary root window only.
   std::vector<internal::RootWindowController*> GetAllRootWindowControllers();
 
   const DisplayLayout& default_display_layout() const {
     return default_display_layout_;
   }
   void SetDefaultDisplayLayout(const DisplayLayout& layout);
 
-  // Sets/gets the display layout for the specified display name.  Getter
-  // returns the default value in case it doesn't have its own layout yet.
+  // Sets/gets the display layout for the specified display or display
+  // name.  Getter returns the default value in case it doesn't have
+  // its own layout yet.
   void SetLayoutForDisplayName(const std::string& name,
                                const DisplayLayout& layout);
-  const DisplayLayout& GetLayoutForDisplayName(const std::string& name);
+  const DisplayLayout& GetLayoutForDisplay(const gfx::Display& display) const;
+
+  // Returns the display layout used for current secondary display.
+  const DisplayLayout& GetCurrentDisplayLayout() const;
 
   // aura::DisplayObserver overrides:
   virtual void OnDisplayBoundsChanged(
       const gfx::Display& display) OVERRIDE;
   virtual void OnDisplayAdded(const gfx::Display& display) OVERRIDE;
   virtual void OnDisplayRemoved(const gfx::Display& display) OVERRIDE;
 
  private:
   // Creates a root window for |display| and stores it in the |root_windows_|
   // map.
   aura::RootWindow* AddRootWindowForDisplay(const gfx::Display& display);
 
   void UpdateDisplayBoundsForLayout();
 
   void NotifyDisplayConfigurationChanging();
 
   // The mapping from display ID to its root window.
   std::map<int64, aura::RootWindow*> root_windows_;
 
   // The default display layout.
   DisplayLayout default_display_layout_;
 
   // Per-device display layout.
   std::map<std::string, DisplayLayout> secondary_layouts_;
 
   ObserverList<Observer> observers_;
 
+  gfx::Display primary_display_;
+
   DISALLOW_COPY_AND_ASSIGN(DisplayController);
 };
 
 }  // namespace ash
 
 #endif  // ASH_DISPLAY_DISPLAY_CONTROLLER_H_