131 lines
4.1 KiB
C++
131 lines
4.1 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) 2016 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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// mapnik
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#include <mapnik/cairo_io.hpp>
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#include <mapnik/image_util.hpp>
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#include <mapnik/map.hpp>
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#ifdef HAVE_CAIRO
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#include <mapnik/cairo/cairo_renderer.hpp>
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#include <cairo.h>
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#ifdef CAIRO_HAS_PDF_SURFACE
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#include <cairo-pdf.h>
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#endif
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#ifdef CAIRO_HAS_PS_SURFACE
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#include <cairo-ps.h>
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#endif
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#ifdef CAIRO_HAS_SVG_SURFACE
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#include <cairo-svg.h>
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#endif
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#endif
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// stl
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#include <string>
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#include <iostream>
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#include <fstream>
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#include <sstream>
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namespace mapnik {
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#if defined(HAVE_CAIRO)
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void save_to_cairo_file(mapnik::Map const& map, std::string const& filename, double scale_factor, double scale_denominator)
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{
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boost::optional<std::string> type = type_from_filename(filename);
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if (type)
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{
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save_to_cairo_file(map,filename,*type,scale_factor,scale_denominator);
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}
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else throw image_writer_exception("Could not write file to " + filename );
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}
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void save_to_cairo_file(mapnik::Map const& map,
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std::string const& filename,
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std::string const& type,
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double scale_factor,
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double scale_denominator)
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{
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std::ofstream file (filename.c_str(), std::ios::out|std::ios::trunc|std::ios::binary);
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if (file)
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{
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cairo_surface_ptr surface;
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unsigned width = map.width();
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unsigned height = map.height();
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if (type == "pdf")
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{
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#ifdef CAIRO_HAS_PDF_SURFACE
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surface = cairo_surface_ptr(cairo_pdf_surface_create(filename.c_str(),width,height),cairo_surface_closer());
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#else
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throw image_writer_exception("PDFSurface not supported in the cairo backend");
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#endif
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}
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#ifdef CAIRO_HAS_SVG_SURFACE
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else if (type == "svg")
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{
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surface = cairo_surface_ptr(cairo_svg_surface_create(filename.c_str(),width,height),cairo_surface_closer());
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}
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#endif
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#ifdef CAIRO_HAS_PS_SURFACE
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else if (type == "ps")
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{
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surface = cairo_surface_ptr(cairo_ps_surface_create(filename.c_str(),width,height),cairo_surface_closer());
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}
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#endif
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#ifdef CAIRO_HAS_IMAGE_SURFACE
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else if (type == "ARGB32")
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{
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surface = cairo_surface_ptr(cairo_image_surface_create(CAIRO_FORMAT_ARGB32,width,height),cairo_surface_closer());
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}
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else if (type == "RGB24")
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{
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surface = cairo_surface_ptr(cairo_image_surface_create(CAIRO_FORMAT_RGB24,width,height),cairo_surface_closer());
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}
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#endif
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else
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{
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throw image_writer_exception("unknown file type: " + type);
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}
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//cairo_t * ctx = cairo_create(surface);
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// TODO - expose as user option
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/*
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if (type == "ARGB32" || type == "RGB24")
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{
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context->set_antialias(Cairo::ANTIALIAS_NONE);
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}
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*/
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mapnik::cairo_renderer<cairo_ptr> ren(map, create_context(surface), scale_factor);
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ren.apply(scale_denominator);
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if (type == "ARGB32" || type == "RGB24")
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{
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cairo_surface_write_to_png(&*surface, filename.c_str());
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}
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cairo_surface_finish(&*surface);
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}
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}
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#endif
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} // end ns
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