284 lines
9.2 KiB
C++
284 lines
9.2 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) 2021 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 <cmath>
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#include <mapnik/mapnik.hpp>
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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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#include <mapnik/warning.hpp>
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MAPNIK_DISABLE_WARNING_PUSH
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#include <mapnik/warning_ignore.hpp>
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#include <boost/algorithm/string.hpp>
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#include <boost/program_options.hpp>
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MAPNIK_DISABLE_WARNING_POP
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#include <mapnik/warning.hpp>
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MAPNIK_DISABLE_WARNING_PUSH
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#include <mapnik/warning_ignore_agg.hpp>
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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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MAPNIK_DISABLE_WARNING_POP
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struct main_marker_visitor
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{
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main_marker_visitor(std::string const& svg_name, double scale_factor, double opacity, bool verbose, bool auto_open)
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: svg_name_(svg_name)
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, scale_factor_(scale_factor)
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, opacity_(opacity)
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, verbose_(verbose)
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, auto_open_(auto_open)
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{}
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int operator()(mapnik::marker_svg const& marker) const
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{
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#if 1
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using color_type = agg::rgba8;
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using order_type = agg::order_rgba;
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using blender_type = agg::comp_op_adaptor_rgba_pre<color_type, order_type>; // comp blender
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using buf_type = agg::rendering_buffer;
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using pixfmt = agg::pixfmt_custom_blend_rgba<blender_type, buf_type>;
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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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#else
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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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#endif
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agg::rasterizer_scanline_aa<> ras_ptr;
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agg::scanline_u8 sl;
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double w, h;
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std::tie(w, h) = marker.dimensions();
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if (w == 0 || h == 0)
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{
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if (verbose_)
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{
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std::clog << "Invalid SVG dimensions: " << w << "," << h << " using svgBBOX()" << std::endl;
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}
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auto b = marker.bounding_box();
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w = b.width();
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h = b.height();
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}
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double svg_width = w * scale_factor_;
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double svg_height = h * scale_factor_;
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int output_width = std::max(1, static_cast<int>(std::round(svg_width)));
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int output_height = std::max(1, static_cast<int>(std::round(svg_height)));
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if (verbose_)
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{
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std::clog << "SVG width of '" << w << "' and height of '" << h << "'\n";
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std::clog << "Output image dimensions:[" << output_width << "," << output_height << "]" << std::endl;
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}
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mapnik::image_rgba8 im(output_width, output_height, true, true);
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agg::rendering_buffer buf(im.bytes(), im.width(), im.height(), im.row_size());
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pixfmt pixf(buf);
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renderer_base renb(pixf);
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mapnik::box2d<double> bbox = {0, 0, svg_width, svg_height};
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// center the svg marker on '0,0'
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agg::trans_affine mtx = agg::trans_affine_translation(-0.5 * w, -0.5 * h);
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// Scale the image
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mtx.scale(scale_factor_);
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// render the marker at the center of the marker box
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mtx.translate(0.5 * svg_width, 0.5 * svg_height);
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mapnik::svg::vertex_stl_adapter<mapnik::svg::svg_path_storage> stl_storage(marker.get_data()->source());
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mapnik::svg::svg_path_adapter svg_path(stl_storage);
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mapnik::svg::renderer_agg<mapnik::svg_path_adapter, mapnik::svg_attribute_type, renderer_solid, pixfmt>
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svg_renderer_this(svg_path, marker.get_data()->svg_group());
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svg_renderer_this.render(ras_ptr, sl, renb, mtx, opacity_, bbox);
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std::string png_name(svg_name_);
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boost::algorithm::ireplace_last(png_name, ".svg", ".png");
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demultiply_alpha(im);
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mapnik::save_to_file<mapnik::image_rgba8>(im, png_name, "png");
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int status = 0;
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if (auto_open_)
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{
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std::ostringstream s;
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#ifdef __APPLE__
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s << "open " << png_name;
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#else
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s << "xdg-open " << png_name;
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#endif
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int ret = std::system(s.str().c_str());
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if (ret != 0)
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status = ret;
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}
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std::clog << "rendered to: " << png_name << "\n";
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return status;
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}
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// default
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template<typename T>
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int operator()(T const&) const
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{
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std::clog << "svg2png error: failed to process '" << svg_name_ << "'\n";
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return -1;
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}
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private:
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std::string svg_name_;
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double scale_factor_;
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double opacity_;
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bool verbose_;
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bool auto_open_;
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};
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void check_opacity_range(double opacity)
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{
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using namespace boost::program_options;
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if (opacity < 0.0 || opacity > 1.0)
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{
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throw invalid_option_value(std::to_string(opacity));
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}
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}
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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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bool strict = false;
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int status = 0;
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std::vector<std::string> svg_files;
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mapnik::setup();
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mapnik::logger::instance().set_severity(mapnik::logger::error);
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double scale_factor;
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double opacity;
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std::string usage = "Usage: svg2png [options] <svg-file(s)>";
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try
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{
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po::options_description desc("svg2png utility");
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// clang-format off
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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,o","automatically open the file after rendering (os x only)")
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("strict,s","enables strict SVG parsing")
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("scale-factor", po::value<double>()->default_value(1.0), "provide scaling factor (default: 1.0)")
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("opacity", po::value<double>()->default_value(1.0)->notifier(&check_opacity_range), "top level opacity (default: 1.0)")
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("svg",po::value<std::vector<std::string> >(),"svg file to read")
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;
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// clang-format on
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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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std::clog << usage << 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("strict"))
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{
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strict = true;
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}
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if (vm.count("scale-factor"))
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{
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scale_factor = vm["scale-factor"].as<double>();
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}
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if (vm.count("opacity"))
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{
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opacity = vm["opacity"].as<double>();
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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 << usage << 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 << usage << std::endl;
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return 0;
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}
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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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std::shared_ptr<mapnik::marker const> marker =
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mapnik::marker_cache::instance().find(svg_name, false, strict);
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main_marker_visitor visitor(svg_name, scale_factor, opacity, verbose, auto_open);
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status = mapnik::util::apply_visitor(visitor, *marker);
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}
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}
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catch (std::exception const& ex)
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{
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std::clog << "Exception caught:" << ex.what() << std::endl;
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return -1;
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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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return -1;
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}
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return status;
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}
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