212 lines
7 KiB
C++
212 lines
7 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) 2014 Artem Pavlenko
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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 <iostream>
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#include <sstream>
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#include <vector>
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#include <string>
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#include <mapnik/version.hpp>
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#include <mapnik/debug.hpp>
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#include <mapnik/marker.hpp>
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#include <mapnik/marker_cache.hpp>
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#include <mapnik/image_util.hpp>
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#include <mapnik/svg/svg_path_adapter.hpp>
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#include <mapnik/svg/svg_renderer_agg.hpp>
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#include <mapnik/svg/svg_path_attributes.hpp>
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#pragma GCC diagnostic push
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#pragma GCC diagnostic ignored "-Wunused-parameter"
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#pragma GCC diagnostic ignored "-Wunused-local-typedef"
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#include <boost/algorithm/string.hpp>
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#include <boost/program_options.hpp>
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#pragma GCC diagnostic pop
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#include "agg_rasterizer_scanline_aa.h"
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#include "agg_basics.h"
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#include "agg_rendering_buffer.h"
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#include "agg_renderer_base.h"
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#include "agg_pixfmt_rgba.h"
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#include "agg_scanline_u.h"
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#include <libxml/parser.h> // for xmlInitParser(), xmlCleanupParser()
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int main (int argc,char** argv)
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{
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namespace po = boost::program_options;
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bool verbose = false;
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bool auto_open = false;
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int return_value = 0;
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std::vector<std::string> svg_files;
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mapnik::logger::instance().set_severity(mapnik::logger::error);
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try
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{
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po::options_description desc("svg2png utility");
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desc.add_options()
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("help,h", "produce usage message")
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("version,V","print version string")
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("verbose,v","verbose output")
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("open","automatically open the file after rendering (os x only)")
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("svg",po::value<std::vector<std::string> >(),"svg file to read")
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;
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po::positional_options_description p;
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p.add("svg",-1);
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po::variables_map vm;
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po::store(po::command_line_parser(argc, argv).options(desc).positional(p).run(), vm);
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po::notify(vm);
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if (vm.count("version"))
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{
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std::clog <<"version " << MAPNIK_VERSION_STRING << std::endl;
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return 1;
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}
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if (vm.count("help"))
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{
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std::clog << desc << std::endl;
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return 1;
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}
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if (vm.count("verbose"))
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{
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verbose = true;
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}
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if (vm.count("open"))
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{
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auto_open = true;
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}
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if (vm.count("svg"))
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{
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svg_files=vm["svg"].as< std::vector<std::string> >();
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}
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else
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{
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std::clog << "please provide an svg file!" << std::endl;
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return -1;
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}
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std::vector<std::string>::const_iterator itr = svg_files.begin();
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if (itr == svg_files.end())
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{
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std::clog << "no svg files to render" << std::endl;
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return 0;
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}
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xmlInitParser();
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while (itr != svg_files.end())
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{
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std::string svg_name (*itr++);
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if (verbose)
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{
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std::clog << "found: " << svg_name << "\n";
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}
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boost::optional<mapnik::marker_ptr> marker_ptr =
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mapnik::marker_cache::instance().find(svg_name, false);
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if (!marker_ptr)
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{
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std::clog << "svg2png error: could not open: '" << svg_name << "'\n";
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return_value = -1;
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continue;
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}
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mapnik::marker marker = **marker_ptr;
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if (!marker.is_vector())
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{
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std::clog << "svg2png error: '" << svg_name << "' is not a valid vector!\n";
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return_value = -1;
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continue;
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}
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using pixfmt = agg::pixfmt_rgba32_pre;
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using renderer_base = agg::renderer_base<pixfmt>;
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using renderer_solid = agg::renderer_scanline_aa_solid<renderer_base>;
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agg::rasterizer_scanline_aa<> ras_ptr;
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agg::scanline_u8 sl;
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double opacity = 1;
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int w = marker.width();
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int h = marker.height();
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if (verbose)
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{
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std::clog << "found width of '" << w << "' and height of '" << h << "'\n";
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}
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// 10 pixel buffer to avoid edge clipping of 100% svg's
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mapnik::image_rgba8 im(w+0,h+0);
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agg::rendering_buffer buf(im.getBytes(), im.width(), im.height(), im.width() * 4);
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pixfmt pixf(buf);
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renderer_base renb(pixf);
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mapnik::box2d<double> const& bbox = (*marker.get_vector_data())->bounding_box();
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mapnik::coord<double,2> c = bbox.center();
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// center the svg marker on '0,0'
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agg::trans_affine mtx = agg::trans_affine_translation(-c.x,-c.y);
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// render the marker at the center of the marker box
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mtx.translate(0.5 * im.width(), 0.5 * im.height());
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mapnik::svg::vertex_stl_adapter<mapnik::svg::svg_path_storage> stl_storage((*marker.get_vector_data())->source());
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mapnik::svg::svg_path_adapter svg_path(stl_storage);
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mapnik::svg::svg_renderer_agg<mapnik::svg::svg_path_adapter,
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agg::pod_bvector<mapnik::svg::path_attributes>,
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renderer_solid,
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agg::pixfmt_rgba32_pre > svg_renderer_this(svg_path,
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(*marker.get_vector_data())->attributes());
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svg_renderer_this.render(ras_ptr, sl, renb, mtx, opacity, bbox);
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boost::algorithm::ireplace_last(svg_name,".svg",".png");
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demultiply_alpha(im);
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mapnik::save_to_file<mapnik::image_rgba8>(im,svg_name,"png");
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if (auto_open)
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{
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std::ostringstream s;
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#ifdef DARWIN
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s << "open " << svg_name;
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#else
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s << "xdg-open " << svg_name;
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#endif
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int ret = system(s.str().c_str());
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if (ret != 0)
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return_value = ret;
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}
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std::clog << "rendered to: " << svg_name << "\n";
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}
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}
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catch (...)
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{
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std::clog << "Exception of unknown type!" << std::endl;
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xmlCleanupParser();
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return -1;
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}
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// only call this once, on exit
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// to make sure valgrind output is clean
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// http://xmlsoft.org/xmlmem.html
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xmlCleanupParser();
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return return_value;
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}
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