602 lines
18 KiB
C++
602 lines
18 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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#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_palette();
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void export_image();
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void export_image_view();
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void export_gamma_method();
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void export_grid();
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void export_grid_view();
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void export_map();
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void export_python();
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void export_expression();
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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_fontset();
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void export_datasource();
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void export_datasource_cache();
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void export_symbolizer();
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void export_markers_symbolizer();
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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_placement();
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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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void export_raster_colorizer();
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void export_inmem_metawriter();
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void export_label_collision_detector();
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void export_logger();
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#include <mapnik/version.hpp>
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#include <mapnik/value_error.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/scale_denominator.hpp>
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#include <mapnik/value_error.hpp>
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#include <mapnik/save_map.hpp>
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#include <mapnik/scale_denominator.hpp>
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#include "python_grid_utils.hpp"
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#include "mapnik_value_converter.hpp"
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#include "mapnik_threads.hpp"
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#include "python_optional.hpp"
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#if defined(HAVE_CAIRO) && defined(HAVE_PYCAIRO)
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#include <pycairo.h>
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static Pycairo_CAPI_t *Pycairo_CAPI;
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#endif
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using mapnik::python_thread;
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using mapnik::python_unblock_auto_block;
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#ifdef MAPNIK_DEBUG
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bool python_thread::thread_support = true;
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#endif
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boost::thread_specific_ptr<PyThreadState> python_thread::state;
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void render(const mapnik::Map& map,
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mapnik::image_32& image,
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double scale_factor = 1.0,
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unsigned offset_x = 0u,
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unsigned offset_y = 0u)
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{
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python_unblock_auto_block b;
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mapnik::agg_renderer<mapnik::image_32> ren(map,image,scale_factor,offset_x, offset_y);
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ren.apply();
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}
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void render_with_detector(
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const mapnik::Map &map,
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mapnik::image_32 &image,
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boost::shared_ptr<mapnik::label_collision_detector4> detector,
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double scale_factor = 1.0,
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unsigned offset_x = 0u,
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unsigned offset_y = 0u)
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{
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python_unblock_auto_block b;
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mapnik::agg_renderer<mapnik::image_32> ren(map,image,detector);
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ren.apply();
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}
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void render_layer2(const mapnik::Map& map,
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mapnik::image_32& image,
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unsigned layer_idx)
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{
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std::vector<mapnik::layer> const& layers = map.layers();
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std::size_t layer_num = layers.size();
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if (layer_idx >= layer_num) {
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std::ostringstream s;
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s << "Zero-based layer index '" << layer_idx << "' not valid, only '"
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<< layer_num << "' layers are in map\n";
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throw std::runtime_error(s.str());
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}
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python_unblock_auto_block b;
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mapnik::layer const& layer = layers[layer_idx];
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mapnik::agg_renderer<mapnik::image_32> ren(map,image,1.0,0,0);
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std::set<std::string> names;
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ren.apply(layer,names);
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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,
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PycairoSurface* surface,
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double scale_factor = 1.0,
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unsigned offset_x = 0,
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unsigned offset_y = 0)
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{
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python_unblock_auto_block b;
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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,scale_factor,offset_x,offset_y);
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ren.apply();
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}
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void render4(const mapnik::Map& map, PycairoSurface* surface)
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{
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python_unblock_auto_block b;
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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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void render5(const mapnik::Map& map,
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PycairoContext* context,
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double scale_factor = 1.0,
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unsigned offset_x = 0,
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unsigned offset_y = 0)
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{
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python_unblock_auto_block b;
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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,scale_factor,offset_x, offset_y);
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ren.apply();
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}
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void render6(const mapnik::Map& map, PycairoContext* context)
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{
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python_unblock_auto_block b;
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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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#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::image_32 image(width,height);
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render(map,image,1.0,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,1.0);
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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::image_32 image(map.width(),map.height());
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render(map,image,1.0,0,0);
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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,1.0);
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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::image_32 image(map.width(),map.height());
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render(map,image,1.0,0,0);
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mapnik::save_to_file(image,filename);
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}
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}
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void render_to_file3(const mapnik::Map& map,
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const std::string& filename,
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const std::string& format,
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double scale_factor = 1.0
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)
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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,scale_factor);
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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::image_32 image(map.width(),map.height());
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render(map,image,scale_factor,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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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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// http://docs.python.org/c-api/exceptions.html#standard-exceptions
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void config_error_translator(mapnik::config_error const & ex) {
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PyErr_SetString(PyExc_RuntimeError, ex.what());
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}
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void value_error_translator(mapnik::value_error const & ex) {
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PyErr_SetString(PyExc_ValueError, 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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std::string mapnik_version_string()
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{
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return MAPNIK_VERSION_STRING;
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}
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// indicator for jpeg read/write support within libmapnik
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bool has_jpeg()
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{
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#if defined(HAVE_JPEG)
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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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// indicator for cairo rendering support inside libmapnik
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bool has_cairo()
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{
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#if defined(HAVE_CAIRO)
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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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// indicator for pycairo support in the python bindings
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bool has_pycairo()
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{
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#if defined(HAVE_CAIRO) && defined(HAVE_PYCAIRO)
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Pycairo_CAPI = (Pycairo_CAPI_t*) PyCObject_Import(const_cast<char *>("cairo"), const_cast<char *>("CAPI"));
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if (Pycairo_CAPI == NULL){
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/*
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Case where pycairo support has been compiled into
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mapnik but at runtime the cairo python module
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is unable to be imported and therefore Pycairo surfaces
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and contexts cannot be passed to mapnik.render()
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*/
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return false;
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}
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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, 4)
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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_to_string_overloads, save_map_to_string, 1, 2)
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BOOST_PYTHON_FUNCTION_OVERLOADS(render_overloads, render, 2, 5)
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BOOST_PYTHON_FUNCTION_OVERLOADS(render_with_detector_overloads, render_with_detector, 3, 6)
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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_to_string;
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using mapnik::render_grid;
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register_exception_translator<mapnik::config_error>(&config_error_translator);
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register_exception_translator<mapnik::value_error>(&value_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_fontset();
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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_palette();
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export_image();
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export_image_view();
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export_gamma_method();
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export_grid();
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export_grid_view();
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export_expression();
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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_symbolizer();
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export_markers_symbolizer();
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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_placement();
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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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export_raster_colorizer();
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export_inmem_metawriter();
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export_label_collision_detector();
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export_logger();
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def("render_grid",&render_grid,
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( arg("map"),
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arg("layer"),
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args("key")="__id__",
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arg("resolution")=4,
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arg("fields")=boost::python::list()
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)
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);
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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_to_file",&render_to_file3,
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"\n"
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"Render Map to file using explicit image type and scale factor.\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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">>> scale_factor = 4\n"
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">>> render_to_file(m,'image.jpeg',scale_factor)\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, render_overloads(
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"\n"
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"Render Map to an AGG image_32 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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">>> scale_factor=2.0\n"
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">>> offset = [100,50]\n"
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">>> render(m,im)\n"
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">>> render(m,im,scale_factor)\n"
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">>> render(m,im,scale_factor,offset[0],offset[1])\n"
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"\n"
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));
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def("render_with_detector", &render_with_detector, render_with_detector_overloads(
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"\n"
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"Render Map to an AGG image_32 using a pre-constructed detector.\n"
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"\n"
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"Usage:\n"
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">>> from mapnik import Map, Image, LabelCollisionDetector, render_with_detector, 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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">>> detector = LabelCollisionDetector(m)\n"
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">>> render_with_detector(m, im, detector)\n"
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));
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def("render_layer", &render_layer2,
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(arg("map"),arg("image"),args("layer"))
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);
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def("render_layer", &mapnik::render_layer_for_grid,
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(arg("map"),arg("grid"),args("layer"),arg("fields")=boost::python::list())
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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"
|
|
);
|
|
|
|
def("render",&render4,
|
|
"\n"
|
|
"Render Map to Cairo Surface\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> from mapnik import Map, render, load_map\n"
|
|
">>> from cairo import SVGSurface\n"
|
|
">>> m = Map(256,256)\n"
|
|
">>> load_map(m,'mapfile.xml')\n"
|
|
">>> surface = SVGSurface('image.svg', m.width, m.height)\n"
|
|
">>> render(m,surface)\n"
|
|
"\n"
|
|
);
|
|
|
|
def("render",&render5,
|
|
"\n"
|
|
"Render Map to Cairo Context using offsets\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> from mapnik import Map, render, load_map\n"
|
|
">>> from cairo import SVGSurface, Context\n"
|
|
">>> surface = SVGSurface('image.svg', m.width, m.height)\n"
|
|
">>> ctx = Context(surface)\n"
|
|
">>> load_map(m,'mapfile.xml')\n"
|
|
">>> render(m,context,1,1)\n"
|
|
"\n"
|
|
);
|
|
|
|
def("render",&render6,
|
|
"\n"
|
|
"Render Map to Cairo Context\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> from mapnik import Map, render, load_map\n"
|
|
">>> from cairo import SVGSurface, Context\n"
|
|
">>> surface = SVGSurface('image.svg', m.width, m.height)\n"
|
|
">>> ctx = Context(surface)\n"
|
|
">>> load_map(m,'mapfile.xml')\n"
|
|
">>> render(m,context)\n"
|
|
"\n"
|
|
);
|
|
#endif
|
|
|
|
def("scale_denominator", &scale_denominator,
|
|
"\n"
|
|
"Return the Map Scale Denominator.\n"
|
|
"Also available as Map.scale_denominator()\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
"\n"
|
|
">>> from mapnik import Map, Projection, scale_denominator, load_map\n"
|
|
">>> m = Map(256,256)\n"
|
|
">>> load_map(m,'mapfile.xml')\n"
|
|
">>> scale_denominator(m,Projection(m.srs).geographic)\n"
|
|
"\n"
|
|
);
|
|
|
|
def("load_map", &load_map, load_map_overloads());
|
|
|
|
def("load_map_from_string", &load_map_string, load_map_string_overloads());
|
|
|
|
def("save_map", &save_map, save_map_overloads());
|
|
/*
|
|
"\n"
|
|
"Save Map object to XML file\n"
|
|
"\n"
|
|
"Usage:\n"
|
|
">>> from mapnik import Map, load_map, save_map\n"
|
|
">>> m = Map(256,256)\n"
|
|
">>> load_map(m,'mapfile_wgs84.xml')\n"
|
|
">>> m.srs\n"
|
|
"'+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs'\n"
|
|
">>> m.srs = '+init=espg:3395'\n"
|
|
">>> save_map(m,'mapfile_mercator.xml')\n"
|
|
"\n"
|
|
);
|
|
*/
|
|
|
|
def("save_map_to_string", &save_map_to_string, save_map_to_string_overloads());
|
|
def("mapnik_version", &mapnik_version,"Get the Mapnik version number");
|
|
def("mapnik_version_string", &mapnik_version_string,"Get the Mapnik version string");
|
|
def("has_jpeg", &has_jpeg, "Get jpeg read/write support status");
|
|
def("has_cairo", &has_cairo, "Get cairo library status");
|
|
def("has_pycairo", &has_pycairo, "Get pycairo module status");
|
|
|
|
python_optional<mapnik::color>();
|
|
python_optional<mapnik::box2d<double> >();
|
|
python_optional<mapnik::datasource::geometry_t>();
|
|
python_optional<std::string>();
|
|
python_optional<unsigned>();
|
|
python_optional<double>();
|
|
python_optional<bool>();
|
|
python_optional<mapnik::text_transform_e>();
|
|
register_ptr_to_python<mapnik::expression_ptr>();
|
|
register_ptr_to_python<mapnik::path_expression_ptr>();
|
|
to_python_converter<mapnik::value_holder,mapnik_param_to_python>();
|
|
to_python_converter<mapnik::value,mapnik_value_to_python>();
|
|
}
|