478 lines
13 KiB
C++
478 lines
13 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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#include <boost/python/exception_translator.hpp>
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void register_cairo();
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void export_color();
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void export_coord();
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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_geometry();
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void export_image();
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void export_image_view();
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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_feature();
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void export_featureset();
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void export_datasource();
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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_shield_symbolizer();
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void export_font_engine();
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void export_projection();
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void export_proj_transform();
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void export_view_transform();
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#include <mapnik/version.hpp>
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#include <mapnik/map.hpp>
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#include <mapnik/agg_renderer.hpp>
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#ifdef HAVE_CAIRO
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#include <mapnik/cairo_renderer.hpp>
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#endif
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#include <mapnik/graphics.hpp>
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#include <mapnik/image_util.hpp>
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#include <mapnik/load_map.hpp>
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#include <mapnik/config_error.hpp>
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#include <mapnik/save_map.hpp>
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#if defined(HAVE_CAIRO) && defined(HAVE_PYCAIRO)
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#include <pycairo.h>
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#endif
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void render(const mapnik::Map& map,mapnik::Image32& image, unsigned offset_x = 0, unsigned offset_y = 0)
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{
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Py_BEGIN_ALLOW_THREADS
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try
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{
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mapnik::agg_renderer<mapnik::Image32> ren(map,image,offset_x, offset_y);
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ren.apply();
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}
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catch (...)
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{
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Py_BLOCK_THREADS
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throw;
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}
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Py_END_ALLOW_THREADS
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}
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void render2(const mapnik::Map& map,mapnik::Image32& image)
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{
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Py_BEGIN_ALLOW_THREADS
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try
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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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catch (...)
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{
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Py_BLOCK_THREADS
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throw;
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}
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Py_END_ALLOW_THREADS
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}
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#if defined(HAVE_CAIRO) && defined(HAVE_PYCAIRO)
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void render3(const mapnik::Map& map,PycairoSurface* surface, unsigned offset_x = 0, unsigned offset_y = 0)
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{
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Py_BEGIN_ALLOW_THREADS
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try
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{
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Cairo::RefPtr<Cairo::Surface> s(new Cairo::Surface(surface->surface));
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mapnik::cairo_renderer<Cairo::Surface> ren(map,s,offset_x, offset_y);
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ren.apply();
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}
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catch (...)
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{
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Py_BLOCK_THREADS
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throw;
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}
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Py_END_ALLOW_THREADS
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}
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void render4(const mapnik::Map& map,PycairoSurface* surface)
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{
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Py_BEGIN_ALLOW_THREADS
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try
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{
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Cairo::RefPtr<Cairo::Surface> s(new Cairo::Surface(surface->surface));
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mapnik::cairo_renderer<Cairo::Surface> ren(map,s);
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ren.apply();
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}
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catch (...)
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{
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Py_BLOCK_THREADS
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throw;
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}
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Py_END_ALLOW_THREADS
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}
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void render5(const mapnik::Map& map,PycairoContext* context, unsigned offset_x = 0, unsigned offset_y = 0)
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{
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Py_BEGIN_ALLOW_THREADS
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try
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{
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Cairo::RefPtr<Cairo::Context> c(new Cairo::Context(context->ctx));
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mapnik::cairo_renderer<Cairo::Context> ren(map,c,offset_x, offset_y);
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ren.apply();
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}
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catch (...)
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{
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Py_BLOCK_THREADS
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throw;
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}
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Py_END_ALLOW_THREADS
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}
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void render6(const mapnik::Map& map,PycairoContext* context)
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{
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Py_BEGIN_ALLOW_THREADS
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try
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{
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Cairo::RefPtr<Cairo::Context> c(new Cairo::Context(context->ctx));
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mapnik::cairo_renderer<Cairo::Context> ren(map,c);
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ren.apply();
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}
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catch (...)
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{
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Py_BLOCK_THREADS
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throw;
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}
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Py_END_ALLOW_THREADS
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}
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#endif
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void render_tile_to_file(const mapnik::Map& map,
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unsigned offset_x, unsigned offset_y,
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unsigned width, unsigned height,
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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(width,height);
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render(map,image,offset_x, offset_y);
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mapnik::save_to_file(image.data(),file,format);
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}
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void render_to_file1(const mapnik::Map& map,
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const std::string& filename,
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const std::string& format)
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{
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if (format == "pdf" | format == "svg" | format =="ps" | format == "ARGB32" | format == "RGB24")
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{
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#if defined(HAVE_CAIRO)
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mapnik::save_to_cairo_file(map,filename,format);
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#else
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throw mapnik::ImageWriterException("Cairo backend not available, cannot write to format: " + format);
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#endif
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}
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else
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{
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mapnik::Image32 image(map.getWidth(),map.getHeight());
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render(map,image,0,0);
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mapnik::save_to_file(image,filename,format);
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}
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}
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void render_to_file2(const mapnik::Map& map,const std::string& filename)
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{
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std::string format = mapnik::guess_type(filename);
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if (format == "pdf" | format == "svg" | format =="ps")
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{
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#if defined(HAVE_CAIRO)
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mapnik::save_to_cairo_file(map,filename,format);
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#else
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throw mapnik::ImageWriterException("Cairo backend not available, cannot write to format: " + format);
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#endif
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}
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else
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{
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mapnik::Image32 image(map.getWidth(),map.getHeight());
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render(map,image,0,0);
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mapnik::save_to_file(image,filename);
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}
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}
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double scale_denominator(mapnik::Map const &map, bool geographic)
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{
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return mapnik::scale_denominator(map, geographic);
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}
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void translator(mapnik::config_error const & ex) {
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PyErr_SetString(PyExc_UserWarning, ex.what());
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}
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unsigned mapnik_version()
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{
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return MAPNIK_VERSION;
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}
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unsigned mapnik_svn_revision()
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{
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#if defined(SVN_REVISION)
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return SVN_REVISION;
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#else
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return 0;
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#endif
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}
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bool has_cairo()
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{
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#if defined(HAVE_CAIRO) && defined(HAVE_PYCAIRO)
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return true;
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#else
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return false;
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#endif
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}
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BOOST_PYTHON_FUNCTION_OVERLOADS(load_map_overloads, load_map, 2, 3);
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BOOST_PYTHON_FUNCTION_OVERLOADS(load_map_string_overloads, load_map_string, 2, 3);
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BOOST_PYTHON_FUNCTION_OVERLOADS(save_map_overloads, save_map, 2, 3);
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BOOST_PYTHON_FUNCTION_OVERLOADS(save_map_string_overloads, save_map_string, 1, 2);
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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::load_map;
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using mapnik::load_map_string;
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using mapnik::save_map;
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using mapnik::save_map_string;
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register_exception_translator<mapnik::config_error>(translator);
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register_cairo();
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export_query();
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export_geometry();
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export_feature();
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export_featureset();
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export_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_image_view();
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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_shield_symbolizer();
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export_font_engine();
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export_projection();
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export_proj_transform();
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export_view_transform();
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export_coord();
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export_map();
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def("render_to_file",&render_to_file1,
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"\n"
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"Render Map to file using explicit image type.\n"
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"\n"
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"Usage:\n"
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">>> from mapnik import Map, render_to_file, load_map\n"
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">>> m = Map(256,256)\n"
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">>> load_map(m,'mapfile.xml')\n"
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">>> render_to_file(m,'image32bit.png','png')\n"
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"\n"
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"8 bit (paletted) PNG can be requested with 'png256':\n"
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">>> render_to_file(m,'8bit_image.png','png256')\n"
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"\n"
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"JPEG quality can be controlled by adding a suffix to\n"
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"'jpeg' between 0 and 100 (default is 85):\n"
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">>> render_to_file(m,'top_quality.jpeg','jpeg100')\n"
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">>> render_to_file(m,'medium_quality.jpeg','jpeg50')\n"
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);
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def("render_to_file",&render_to_file2,
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"\n"
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"Render Map to file (type taken from file extension)\n"
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"\n"
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"Usage:\n"
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">>> from mapnik import Map, render_to_file, load_map\n"
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">>> m = Map(256,256)\n"
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">>> render_to_file(m,'image.jpeg')\n"
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"\n"
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);
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def("render_tile_to_file",&render_tile_to_file,
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"\n"
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"TODO\n"
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"\n"
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);
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def("render",&render,
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"\n"
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"Render Map to an AGG Image32 using offsets\n"
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"\n"
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"Usage:\n"
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">>> from mapnik import Map, Image, render, load_map\n"
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">>> m = Map(256,256)\n"
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">>> load_map(m,'mapfile.xml')\n"
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">>> im = Image(m.width,m.height)\n"
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">>> render(m,im,1,1)\n"
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"\n"
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);
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def("render",&render2,
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"\n"
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"Render Map to an AGG Image32\n"
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"\n"
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"Usage:\n"
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">>> from mapnik import Map, Image, render, load_map\n"
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">>> m = Map(256,256)\n"
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">>> load_map(m,'mapfile.xml')\n"
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">>> im = Image(m.width,m.height)\n"
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">>> render(m,im)\n"
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"\n"
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);
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#if defined(HAVE_CAIRO) && defined(HAVE_PYCAIRO)
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def("render",&render3,
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"\n"
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"Render Map to Cairo Surface using offsets\n"
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"\n"
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"Usage:\n"
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">>> from mapnik import Map, render, load_map\n"
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">>> from cairo import SVGSurface\n"
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">>> m = Map(256,256)\n"
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">>> load_map(m,'mapfile.xml')\n"
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">>> surface = SVGSurface('image.svg', m.width, m.height)\n"
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">>> render(m,surface,1,1)\n"
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"\n"
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);
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def("render",&render4,
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"\n"
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"Render Map to Cairo Surface\n"
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"\n"
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"Usage:\n"
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">>> from mapnik import Map, render, load_map\n"
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">>> from cairo import SVGSurface\n"
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">>> m = Map(256,256)\n"
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">>> load_map(m,'mapfile.xml')\n"
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">>> surface = SVGSurface('image.svg', m.width, m.height)\n"
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">>> render(m,surface)\n"
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"\n"
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);
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def("render",&render5,
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"\n"
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"Render Map to Cairo Context using offsets\n"
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"\n"
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"Usage:\n"
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">>> from mapnik import Map, render, load_map\n"
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">>> from cairo import SVGSurface, Context\n"
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">>> surface = SVGSurface('image.svg', m.width, m.height)\n"
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">>> ctx = Context(surface)\n"
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">>> load_map(m,'mapfile.xml')\n"
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">>> render(m,context,1,1)\n"
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"\n"
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);
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def("render",&render6,
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"\n"
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"Render Map to Cairo Context\n"
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"\n"
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"Usage:\n"
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">>> from mapnik import Map, render, load_map\n"
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">>> from cairo import SVGSurface, Context\n"
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">>> surface = SVGSurface('image.svg', m.width, m.height)\n"
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">>> ctx = Context(surface)\n"
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">>> load_map(m,'mapfile.xml')\n"
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">>> render(m,context)\n"
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"\n"
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);
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#endif
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def("scale_denominator", &scale_denominator,
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"\n"
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"Return the Map Scale Denominator.\n"
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"Also available as Map.scale_denominator()\n"
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"\n"
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"Usage:\n"
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"\n"
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">>> from mapnik import Map, Projection, scale_denominator, load_map\n"
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">>> m = Map(256,256)\n"
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">>> load_map(m,'mapfile.xml')\n"
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">>> scale_denominator(m,Projection(m.srs).geographic)\n"
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"\n"
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);
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def("load_map", & load_map, load_map_overloads());
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def("load_map_from_string", & load_map_string, load_map_string_overloads());
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def("save_map", & save_map, save_map_overloads());
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/*
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"\n"
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"Save Map object to XML file\n"
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"\n"
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"Usage:\n"
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">>> from mapnik import Map, load_map, save_map\n"
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">>> m = Map(256,256)\n"
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">>> load_map(m,'mapfile_wgs84.xml')\n"
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">>> m.srs\n"
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"'+proj=latlong +datum=WGS84'\n"
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">>> m.srs = '+init=espg:3395'\n"
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">>> save_map(m,'mapfile_mercator.xml')\n"
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"\n"
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);
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*/
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def("save_map_string", & save_map_string, save_map_string_overloads());
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def("mapnik_version", &mapnik_version,"Get the Mapnik version number");
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def("mapnik_svn_revision", &mapnik_svn_revision,"Get the Mapnik svn revision");
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def("has_cairo", &has_cairo, "Get cairo library status");
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using mapnik::symbolizer;
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class_<symbolizer>("Symbolizer",no_init)
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;
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register_ptr_to_python<mapnik::filter_ptr>();
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}
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