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