GlutKeyboardManager.h

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#ifndef NAN_INCLUDED_GlutKeyboardManager
#define NAN_INCLUDED_GlutKeyboardManager

#include "MEM_NonCopyable.h"
#include "MEM_SmartPtr.h"

// So pissed off with Glut callback stuff
// that is impossible to call objects unless they are global

// inherit from GlutKeyboardHandler and installl the drawer in the singleton
// class GlutKeyboardManager.

class GlutKeyboardHandler : public MEM_NonCopyable {
public :

        virtual 
                void
        HandleKeyboard(
                unsigned char key,
                int x,
                int y
        )= 0;

        virtual 
        ~GlutKeyboardHandler(
        ){};            
};

class GlutKeyboardManager : public MEM_NonCopyable{

public :

        static
                GlutKeyboardManager *
        Instance(
        );

        // this is the function you should pass to glut

        static
                void
        HandleKeyboard(
                unsigned char key,
                int x,
                int y
        );

                void
        InstallHandler(
                GlutKeyboardHandler *
        );

                void
        ReleaseHandler(
        );

        ~GlutKeyboardManager(
        );

private :

        GlutKeyboardManager (
        ) :
                m_handler (0)
        {
        };
        
        GlutKeyboardHandler * m_handler;

        static MEM_SmartPtr<GlutKeyboardManager> m_s_instance;
};      

#endif