Cursor.h

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// -*- C++ -*-
/* GG is a GUI for SDL and OpenGL.
   Copyright (C) 2007 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_Cursor_h_
#define _GG_Cursor_h_

#include <GG/PtRect.h>

#include <boost/shared_ptr.hpp>


namespace GG {

class Texture;

class GG_API Cursor
{
public: 
    Cursor();          
    virtual ~Cursor(); 

 

    virtual void Render(const Pt& pt) = 0;

private:
    friend class boost::serialization::access;
    template <class Archive>
    void serialize(Archive& ar, const unsigned int version);
};

class GG_API TextureCursor :
    public Cursor
{
public: 

    TextureCursor(const boost::shared_ptr<Texture>& texture, const Pt& hotspot = Pt());
 
    virtual void Render(const Pt& pt);

private:
    boost::shared_ptr<Texture> m_texture;
    Pt                         m_hotspot;

    friend class boost::serialization::access;
    template <class Archive>
    void serialize(Archive& ar, const unsigned int version);
};

} // namespace GG

// template implementations
template <class Archive>
void GG::Cursor::serialize(Archive& ar, const unsigned int version)
{}

template <class Archive>
void GG::TextureCursor::serialize(Archive& ar, const unsigned int version)
{
    ar  & BOOST_SERIALIZATION_BASE_OBJECT_NVP(Cursor)
        & m_texture
        & m_hotspot;
}

#endif // _GG_Cursor_h_

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