/*****************************************************************************
 *
 * This file is part of Mapnik (c++ mapping toolkit)
 *
 * Copyright (C) 2010 Artem Pavlenko
 *
 * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 *
 *****************************************************************************/

#ifndef SVG_COMMANDS_HPP
#define SVG_COMMANDS_HPP

#include <boost/spirit/include/qi.hpp>
#include <boost/spirit/include/phoenix_function.hpp>
#include <boost/spirit/include/phoenix_core.hpp>
#include <boost/spirit/include/phoenix_operator.hpp>

namespace mapnik { namespace svg {

    using namespace boost::fusion;

    inline double deg2rad(double deg)
    {
        return (M_PI * deg)/180.0;
    }
    
    template <typename PathType>
    struct move_to
    {
        template <typename T0, typename T1>
        struct result
        {
            typedef void type; 
        };
    
        explicit move_to(PathType & path)
            : path_(path) {}
    
        template  <typename T0, typename T1>
        void operator() (T0 v, T1 rel) const
        {
            path_.move_to(at_c<0>(v),at_c<1>(v),rel); // impl
        }
    
        PathType & path_;
    };

    template <typename PathType>
    struct hline_to
    {
        template <typename T0, typename T1>
        struct result
        {
            typedef void type; 
        };
    
        explicit hline_to(PathType & path)
            : path_(path) {}
    
        template  <typename T0, typename T1>
        void operator() (T0 const& x, T1 rel) const
        {
            path_.hline_to(x,rel);
        }
    
        PathType & path_;
    };


    template <typename PathType>
    struct vline_to
    {
        template <typename T0, typename T1>
        struct result
        {
            typedef void type; 
        };
    
        explicit vline_to(PathType & path)
            : path_(path) {}
    
        template  <typename T0, typename T1>
        void operator() (T0 const& y, T1 rel) const
        {
            path_.vline_to(y,rel);
        }
    
        PathType & path_;
    };

    template <typename PathType>
    struct line_to
    {
        template <typename T0, typename T1>
        struct result
        {
            typedef void type; 
        };
    
        explicit line_to(PathType & path)
            : path_(path) {}
    
        template  <typename T0, typename T1>
        void operator() (T0 const& v, T1 rel) const
        {
            path_.line_to(at_c<0>(v),at_c<1>(v),rel); // impl
        }
    
        PathType & path_;
    };


    template <typename PathType>
    struct curve4
    {
        template <typename T0, typename T1, typename T2, typename T3>
        struct result
        {
            typedef void type; 
        };
    
        explicit curve4(PathType & path)
            : path_(path) {}
    
        template  <typename T0, typename T1,typename T2, typename T3>
        void operator() (T0 const& v0, T1 const& v1, T2 const& v2, T3 rel) const
        {
            path_.curve4(at_c<0>(v0),at_c<1>(v0),
                         at_c<0>(v1),at_c<1>(v1),
                         at_c<0>(v2),at_c<1>(v2),
                         rel); // impl
        }
    
        PathType & path_;
    };


    template <typename PathType>
    struct curve4_smooth
    {
        template <typename T0, typename T1, typename T2>
        struct result
        {
            typedef void type; 
        };
    
        explicit curve4_smooth(PathType & path)
            : path_(path) {}
    
        template  <typename T0, typename T1,typename T2>
        void operator() (T0 const& v0, T1 const& v1, T2 rel) const
        {
            path_.curve4(at_c<0>(v0),at_c<1>(v0),
                         at_c<0>(v1),at_c<1>(v1),
                         rel); // impl
        }
        PathType & path_;
    };

    template <typename PathType>
    struct curve3
    {
        template <typename T0, typename T1, typename T2>
        struct result
        {
            typedef void type; 
        };
    
        explicit curve3(PathType & path)
            : path_(path) {}
    
        template  <typename T0, typename T1,typename T2>
        void operator() (T0 const& v0, T1 const& v1, T2 rel) const
        {
            path_.curve3(at_c<0>(v0),at_c<1>(v0),
                         at_c<0>(v1),at_c<1>(v1),
                         rel); // impl
        }
    
        PathType & path_;
    };

    template <typename PathType>
    struct curve3_smooth
    {
        template <typename T0, typename T1>
        struct result
        {
            typedef void type; 
        };
    
        explicit curve3_smooth(PathType & path)
            : path_(path) {}
    
        template  <typename T0, typename T1>
        void operator() (T0 const& v0, T1 rel) const
        {
            path_.curve3(at_c<0>(v0),at_c<1>(v0),
                         rel); // impl
        }
    
        PathType & path_;
    };

    template <typename PathType>
    struct arc_to
    {
        template <typename T0, typename T1, typename T2, typename T3, typename T4, typename T5>
        struct result
        {
            typedef void type; 
        };
    
        explicit arc_to(PathType & path)
            : path_(path) {}
    
        template  <typename T0, typename T1,typename T2, typename T3, typename T4, typename T5>
        void operator() (T0 const& rv, T1 const& angle, T2 large_arc_flag, T3 sweep_flag, T4 const& v, T5 rel) const
        {
            path_.arc_to(at_c<0>(rv),at_c<1>(rv),
                         deg2rad(angle),large_arc_flag,sweep_flag,   
                         at_c<0>(v),at_c<1>(v),
                         rel); 
        }
    
        PathType & path_;
    };

    template <typename PathType>
    struct close
    {
        typedef void result_type;
    
        explicit close(PathType & path)
            : path_(path) {}
    
        void operator()() const
        {
            path_.close_subpath();
        }
    
        PathType & path_;
    };

    }}


#endif // SVG_COMMANDS_HPP
