8328424af5
2. modified python/c++ demos to reflect the above. 3. removed large 'blobby' mapnik.hpp (compilation times!!!)
145 lines
4.4 KiB
C++
145 lines
4.4 KiB
C++
/*****************************************************************************
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*
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* This file is part of Mapnik (c++ mapping toolkit)
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*
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* Copyright (C) 2006 Artem Pavlenko, Jean-Francois Doyon
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*
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*****************************************************************************/
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//$Id: mapnik_python.cc 27 2005-03-30 21:45:40Z pavlenko $
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#include <boost/python.hpp>
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#include <boost/get_pointer.hpp>
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#include <boost/python/detail/api_placeholder.hpp>
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void export_color();
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void export_layer();
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void export_parameters();
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void export_envelope();
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void export_query();
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void export_image();
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void export_map();
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void export_python();
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void export_filter();
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void export_rule();
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void export_style();
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void export_stroke();
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void export_datasource_cache();
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void export_point_symbolizer();
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void export_line_symbolizer();
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void export_line_pattern_symbolizer();
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void export_polygon_symbolizer();
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void export_polygon_pattern_symbolizer();
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void export_raster_symbolizer();
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void export_text_symbolizer();
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void export_font_engine();
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#include <map.hpp>
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#include <agg_renderer.hpp>
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#include <graphics.hpp>
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#include <datasource_cache.hpp>
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void render_to_file(const mapnik::Map& map,
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const std::string& file,
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const std::string& format)
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{
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mapnik::Image32 image(map.getWidth(),map.getHeight());
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mapnik::agg_renderer<mapnik::Image32> ren(map,image);
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ren.apply();
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image.saveToFile(file,format);
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}
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void render(const mapnik::Map& map,mapnik::Image32& image)
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{
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mapnik::agg_renderer<mapnik::Image32> ren(map,image);
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ren.apply();
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}
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namespace
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{
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//user-friendly wrapper that uses Python dictionary
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using namespace boost::python;
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boost::shared_ptr<mapnik::datasource> create_datasource(const dict& d)
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{
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mapnik::parameters params;
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boost::python::list keys=d.keys();
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for (int i=0; i<len(keys); ++i)
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{
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std::string key=extract<std::string>(keys[i]);
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std::string value=extract<std::string>(d[key]);
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params[key] = value;
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}
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return mapnik::datasource_cache::create(params);
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}
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}
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BOOST_PYTHON_MODULE(_mapnik)
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{
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using namespace boost::python;
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using mapnik::Featureset;
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using mapnik::featureset_ptr;
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using mapnik::datasource;
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using mapnik::coord;
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using mapnik::filter_ptr;
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export_query();
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class_<Featureset,featureset_ptr,boost::noncopyable>("FeatureSet",no_init)
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;
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class_<datasource,boost::shared_ptr<datasource>,
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boost::noncopyable>("Datasource",no_init)
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.def("envelope",&datasource::envelope,
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return_value_policy<reference_existing_object>())
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.def("features",&datasource::features)
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.def("params",&datasource::params,return_value_policy<reference_existing_object>(),
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"The configuration parameters of the data source. "
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"These vary depending on the type of data source.")
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;
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def("CreateDatasource",&create_datasource);
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export_parameters();
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export_color();
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export_envelope();
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export_image();
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export_filter();
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export_rule();
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export_style();
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export_layer();
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export_stroke();
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export_datasource_cache();
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export_point_symbolizer();
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export_line_symbolizer();
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export_line_pattern_symbolizer();
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export_polygon_symbolizer();
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export_polygon_pattern_symbolizer();
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export_raster_symbolizer();
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export_text_symbolizer();
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export_font_engine();
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class_<coord<double,2> >("Coord",init<double,double>())
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.def_readwrite("x", &coord<double,2>::x)
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.def_readwrite("y", &coord<double,2>::y)
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;
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export_map();
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def("render_to_file",&render_to_file);
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def("render",&render);
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register_ptr_to_python<filter_ptr>();
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}
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