mapnik/bindings/python/mapnik_symbolizer.cpp

/*****************************************************************************
 * 
 * This file is part of Mapnik (c++ mapping toolkit)
 *
 * Copyright (C) 2006 Artem Pavlenko, Jean-Francois Doyon
 *
 * 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
 *
 *****************************************************************************/
//$Id$

#include <boost/python.hpp>

//symbolizer typdef here rather than mapnik/symbolizer.hpp
#include <mapnik/rule.hpp>

using mapnik::symbolizer;

using mapnik::rule_type;
using mapnik::point_symbolizer;
using mapnik::line_symbolizer;
using mapnik::line_pattern_symbolizer;
using mapnik::polygon_symbolizer;
using mapnik::polygon_pattern_symbolizer;
using mapnik::raster_symbolizer;
using mapnik::shield_symbolizer;
using mapnik::text_symbolizer;
using mapnik::building_symbolizer;
using mapnik::markers_symbolizer;

struct get_symbolizer_type : public boost::static_visitor<std::string>
{
    public:
        get_symbolizer_type() {}
        
        std::string operator () ( const  point_symbolizer & sym )
        {
            return "point";
        }
    
        std::string operator () ( const line_symbolizer & sym )
        {
            return "line";
        }
    
        std::string operator () ( const line_pattern_symbolizer & sym )
        {
            return "line_pattern";
        }
    
        std::string operator () ( const polygon_symbolizer & sym )
        {
            return "polygon";
        }
    
        std::string operator () ( const polygon_pattern_symbolizer & sym )
        {
            return "polygon_pattern";
        }
    
        std::string operator () ( const raster_symbolizer & sym )
        {
            return "raster";
        }
    
        std::string operator () ( const shield_symbolizer & sym )
        {
            return "shield";
        }
    
        std::string operator () ( const text_symbolizer & sym )
        {
            return "text";
        }
    
        std::string operator () ( const building_symbolizer & sym )
        {
            return "building";
        }
    
        std::string operator () ( const markers_symbolizer & sym )
        {
            return "markers";
        }

};

std::string get_symbol_type(const symbolizer& symbol)
{
   get_symbolizer_type serializer;
   std::string type = boost::apply_visitor( serializer, symbol );
   return type;
}

const point_symbolizer& point_( const symbolizer& symbol )
{
    return boost::get<point_symbolizer>(symbol);
}

const line_symbolizer& line_( const symbolizer& symbol )
{
    return boost::get<line_symbolizer>(symbol);
}

const polygon_symbolizer& polygon_( const symbolizer& symbol )
{
    return boost::get<polygon_symbolizer>(symbol);
}

const raster_symbolizer& raster_( const symbolizer& symbol )
{
    return boost::get<raster_symbolizer>(symbol);
}

const text_symbolizer& text_( const symbolizer& symbol )
{
    return boost::get<text_symbolizer>(symbol);
}

const shield_symbolizer& shield_( const symbolizer& symbol )
{
    return boost::get<shield_symbolizer>(symbol);
}

const line_pattern_symbolizer& line_pattern_( const symbolizer& symbol )
{
    return boost::get<line_pattern_symbolizer>(symbol);
}

const polygon_pattern_symbolizer& polygon_pattern_( const symbolizer& symbol )
{
    return boost::get<polygon_pattern_symbolizer>(symbol);
}

const building_symbolizer& building_( const symbolizer& symbol )
{
    return boost::get<building_symbolizer>(symbol);
}

const markers_symbolizer& markers_( const symbolizer& symbol )
{
    return boost::get<markers_symbolizer>(symbol);
}

void export_symbolizer()
{
    using namespace boost::python;

    class_<symbolizer>("Symbolizer",no_init)

        .def("type",get_symbol_type)

        .def("point",point_,
            return_value_policy<copy_const_reference>())

        .def("line",line_,
            return_value_policy<copy_const_reference>())

        .def("line_pattern",line_pattern_,
            return_value_policy<copy_const_reference>())

        .def("polygon",polygon_,
            return_value_policy<copy_const_reference>())

        .def("polygon_pattern",polygon_pattern_,
            return_value_policy<copy_const_reference>())

        .def("raster",raster_,
            return_value_policy<copy_const_reference>())

        .def("shield",shield_,
            return_value_policy<copy_const_reference>())

        .def("text",text_,
            return_value_policy<copy_const_reference>())

        .def("building",building_,
            return_value_policy<copy_const_reference>())

        .def("markers",markers_,
            return_value_policy<copy_const_reference>())

    ;
}