Create new incliude/osgViewer/api directory to hold platform specific classes such as GraphicsWindow implementations.

Moved GraphicsWindowWin32,X11 and Carbon into their api/Win32, api/X11 and api/Carbon directories.

include/osgViewer/api/Win32/GraphicsWindowWin32

@@ -0,0 +1,144 @@
+/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield 
+ *
+ * This library is open source and may be redistributed and/or modified under  
+ * the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or 
+ * (at your option) any later version.  The full license is in LICENSE file
+ * included with this distribution, and on the openscenegraph.org website.
+ * 
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the 
+ * OpenSceneGraph Public License for more details.
+*/
+
+/* Note, elements of GraphicsWindowX11 have used Prodcer/RenderSurface_X11.cpp as both
+ * a guide to use of X11/GLX and copiying directly in the case of setBorder().
+ * These elements are license under OSGPL as above, with Copyright (C) 2001-2004  Don Burns.
+ */
+
+#ifndef OSGVIEWER_GRAPHICSWINDOWWIN32
+#define OSGVIEWER_GRAPHICSWINDOWWIN32 1
+
+#include <osgViewer/GraphicsWindow>
+
+#ifndef _WIN32_WINNT
+#define _WIN32_WINNT    0x0500
+#endif
+#include <windows.h>
+
+namespace osgViewer
+{
+
+class GraphicsWindowWin32 : public osgViewer::GraphicsWindow
+{
+    public:
+
+        GraphicsWindowWin32(osg::GraphicsContext::Traits* traits);
+        
+        ~GraphicsWindowWin32();
+    
+        virtual bool valid() const { return _valid; }
+        
+        /** Realize the GraphicsContext.*/
+        virtual bool realizeImplementation();
+
+        /** Return true if the graphics context has been realised and is ready to use.*/
+        virtual bool isRealizedImplementation() const { return _realized; }
+
+        /** Close the graphics context.*/
+        virtual void closeImplementation();
+
+        /** Make this graphics context current.*/
+        virtual bool makeCurrentImplementation();
+
+        /** Release the graphics context.*/
+        virtual bool releaseContextImplementation();
+
+        /** Swap the front and back buffers.*/
+        virtual void swapBuffersImplementation();
+        
+        /** Check to see if any events have been generated.*/
+        virtual void checkEvents();
+
+        /** Set Window decoration.*/
+        virtual void setWindowDecoration(bool flag);
+
+        /** Get focus.*/
+        virtual void grabFocus();
+        
+        /** Get focus on if the pointer is in this window.*/
+        virtual void grabFocusIfPointerInWindow();
+        
+        /** Override from GUIActionAdapter.*/
+        virtual void requestWarpPointer(float x,float y);
+        
+        /** Switch on/off the cursor.*/
+        virtual void useCursor(bool /*cursorOn*/);
+        
+        /** Handle a native (Win32) windowing event as received from the system */
+        virtual LRESULT handleNativeWindowingEvent( HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam );
+        
+        /** WindowData is used to pass in the Win32 window handle attached the GraphicsContext::Traits structure.*/
+        struct WindowData : public osg::Referenced
+        {
+            WindowData(HWND window):
+                _hwnd(window) {}
+                
+            HWND    _hwnd;
+        };
+        
+        
+    protected:
+    
+        void init();
+        
+        bool registerWindowProcedure();
+        bool unregisterWindowProcedure();
+        
+        bool createWindow();
+        bool setWindow( HWND handle );
+        
+        void destroyWindow( bool deleteNativeWindow = true );
+        void recreateWindow();
+        
+        bool determineWindowPositionAndStyle( bool decorated, int& x, int& y, unsigned int& w, unsigned int& h, unsigned int& style, unsigned int& extendedStyle );
+        
+        bool setPixelFormat();
+        
+        void adaptKey( WPARAM wParam, LPARAM lParam, int& keySymbol, unsigned int& modifierMask );
+                
+        void transformMouseXY(float& x, float& y);
+        
+        HGLRC getWGLContext() { return _hglrc; }
+        
+        HWND            _hwnd;
+        HDC             _hdc;
+        HGLRC           _hglrc;
+        
+        WNDPROC         _windowProcedure;
+        
+        double          _timeOfLastCheckEvents;
+        
+        int             _screenOriginX;
+        int             _screenOriginY;
+        unsigned int    _screenWidth;
+        unsigned int    _screenHeight;
+        
+        int             _windowOriginXToRealize;
+        int             _windowOriginYToRealize;
+        unsigned int    _windowWidthToRealize;
+        unsigned int    _windowHeightToRealize;
+               
+        bool            _initialized;
+        bool            _valid;
+        bool            _realized;
+
+        bool            _ownsWindow;        
+        bool            _closeWindow;
+        bool            _destroyWindow;
+        bool            _destroying;
+};
+
+}
+
+#endif