wglEventHandler.h

/* Copyright (c) 2007-2010, Stefan Eilemann <eile@equalizergraphics.com> 
 *
 * This library is free software; you can redistribute it and/or modify it under
 * the terms of the GNU Lesser General Public License version 2.1 as published
 * by the Free Software Foundation.
 *  
 * 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 GNU Lesser General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library; if not, write to the Free Software Foundation, Inc.,
 * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 */

#ifndef EQ_WGLEVENTHANDLER_H
#define EQ_WGLEVENTHANDLER_H

#include <eq/eventHandler.h> // base class

namespace eq
{
    class WGLWindowIF;

    class WGLEventHandler : public EventHandler
    {
    public:
        EQ_API WGLEventHandler( WGLWindowIF* window );

        EQ_API virtual ~WGLEventHandler();

        static bool initMagellan(Node* node);

       static void exitMagellan( Node* node );

    private:
        WGLWindowIF* _window;
        HWND         _hWnd;
        WNDPROC      _prevWndProc;
        uint32_t     _buttonState;

        int32_t      _wheelDeltaPerLine;

        struct Private;
        Private* _private; // placeholder for binary-compatible changes

        static LRESULT CALLBACK wndProc( HWND hWnd, UINT uMsg, WPARAM wParam,
                                         LPARAM lParam );
        LRESULT CALLBACK _wndProc( HWND hWnd, UINT uMsg, WPARAM wParam, 
                                   LPARAM lParam );
        void _magellanEventHandler(LPARAM lParam);

        void      _syncButtonState( WPARAM wParam );
        uint32_t  _getKey( LPARAM lParam, WPARAM wParam );
        int32_t   _getWheelDelta( WPARAM wParam ) const;
    };
}

#endif // EQ_WGLEVENTHANDLER_H