LinuxKeyboard.h

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/*
The zlib/libpng License

Copyright (c) 2005-2007 Phillip Castaneda (pjcast -- www.wreckedgames.com)

This software is provided 'as-is', without any express or implied warranty. In no event will
the authors be held liable for any damages arising from the use of this software.

Permission is granted to anyone to use this software for any purpose, including commercial
applications, and to alter it and redistribute it freely, subject to the following
restrictions:

    1. The origin of this software must not be misrepresented; you must not claim that
        you wrote the original software. If you use this software in a product,
        an acknowledgment in the product documentation would be appreciated but is
        not required.

    2. Altered source versions must be plainly marked as such, and must not be
        misrepresented as being the original software.

    3. This notice may not be removed or altered from any source distribution.
*/
#ifndef _LINUX_KEYBOARD_H_EADER_
#define _LINUX_KEYBOARD_H_EADER_

#include "linux/LinuxPrereqs.h"
#include "OISKeyboard.h"
#include <X11/Xlib.h>

namespace OIS
{
    class LinuxKeyboard : public Keyboard
    {
    public:
        LinuxKeyboard(InputManager* creator, bool buffered, bool grab);
        virtual ~LinuxKeyboard();

        virtual bool isKeyDown( KeyCode key ) const;

        virtual const std::string& getAsString( KeyCode kc );

        virtual void copyKeyStates( char keys[256] ) const;

        virtual void setBuffered(bool buffered);

        virtual void capture();

        virtual Interface* queryInterface(Interface::IType) {return 0;}

        virtual void _initialize();

    protected:
        inline bool _isKeyRepeat(XEvent &event)
        {
            //When a key is repeated, there will be two events: released, followed by another immediate pressed. So check to see if another pressed is present  
            if(!XPending(display))
                return false;

            XEvent e;
            XPeekEvent(display, &e);
            if(e.type == KeyPress && e.xkey.keycode == event.xkey.keycode && (e.xkey.time - event.xkey.time) < 2)
            {
                XNextEvent(display, &e);
                return true;
            }

            return false;
        }

        bool _injectKeyDown( KeySym key, int text );
        bool _injectKeyUp( KeySym key );

        typedef std::map<KeySym, KeyCode> XtoOIS_KeyMap;
        XtoOIS_KeyMap keyConversion;

        char KeyBuffer[256];

        Window window;
        Display *display;
        bool grabKeyboard;
        bool keyFocusLost;

        std::string mGetString;
    };
}

#endif //_LINUX_KEYBOARD_H_EADER_