EventPump.h

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// -*- C++ -*-
/* GG is a GUI for SDL and OpenGL.
   Copyright (C) 2003 T. Zachary Laine

   This library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public License
   as published by the Free Software Foundation; either version 2.1
   of the License, or (at your option) any later version.
   
   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., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA

   If you do not wish to comply with the terms of the LGPL please
   contact the author as other terms are available for a fee.
    
   Zach Laine
   whatwasthataddress@hotmail.com */
   
#ifndef _GG_EventPump_h_
#define _GG_EventPump_h_

#include <GG/GUI.h>


namespace GG {

struct GG_API EventPumpState
{
    EventPumpState(); 

    int last_FPS_time;    
    int last_frame_time;  
    int most_recent_time; 
    int frames;           
};

class GG_API EventPumpBase
{
protected:
    void LoopBody(GUI* gui, EventPumpState& state, bool do_non_rendering, bool do_rendering);

    static EventPumpState& State();
};

class GG_API EventPump : public EventPumpBase
{
public:
    virtual ~EventPump() {} 

    virtual void operator()();
};

class GG_API ModalEventPump : public EventPump
{
public:
    ModalEventPump(const bool& done); 
    virtual void operator()();

protected:
    bool Done() const; 

private:
    const bool& m_done;
};

} // namespace GG

#endif // _GG_EventPump_h_

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