/***************************************************************************** * * This file is part of Mapnik (c++ mapping toolkit) * * Copyright (C) 2014 Artem Pavlenko * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * *****************************************************************************/ // mapnik #include #include #include #include #include #include #include #include #include #include #include #include // boost #include // stl #include #include #include #include #include namespace mapnik { template std::string save_to_string(T const& image, std::string const& type, rgba_palette const& palette) { std::ostringstream ss(std::ios::out|std::ios::binary); save_to_stream(image, ss, type, palette); return ss.str(); } template std::string save_to_string(T const& image, std::string const& type) { std::ostringstream ss(std::ios::out|std::ios::binary); save_to_stream(image, ss, type); return ss.str(); } template void save_to_file(T const& image, std::string const& filename, std::string const& type, rgba_palette const& palette) { std::ofstream file (filename.c_str(), std::ios::out| std::ios::trunc|std::ios::binary); if (file) { save_to_stream(image, file, type, palette); } else throw ImageWriterException("Could not write file to " + filename ); } template void save_to_file(T const& image, std::string const& filename, std::string const& type) { std::ofstream file (filename.c_str(), std::ios::out| std::ios::trunc|std::ios::binary); if (file) { save_to_stream(image, file, type); } else throw ImageWriterException("Could not write file to " + filename ); } template void save_to_stream(T const& image, std::ostream & stream, std::string const& type, rgba_palette const& palette) { if (stream && image.width() > 0 && image.height() > 0) { std::string t = type; std::transform(t.begin(), t.end(), t.begin(), ::tolower); if (t == "png" || boost::algorithm::starts_with(t, "png")) { png_saver_pal visitor(stream, t, palette); visitor(image); //mapnik::util::apply_visitor(visitor, image); } else if (boost::algorithm::starts_with(t, "tif")) { throw ImageWriterException("palettes are not currently supported when writing to tiff format (yet)"); } else if (boost::algorithm::starts_with(t, "jpeg")) { throw ImageWriterException("palettes are not currently supported when writing to jpeg format"); } else throw ImageWriterException("unknown file type: " + type); } else throw ImageWriterException("Could not write to empty stream" ); } template void save_to_stream(T const& image, std::ostream & stream, std::string const& type) { if (stream && image.width() > 0 && image.height() > 0) { std::string t = type; std::transform(t.begin(), t.end(), t.begin(), ::tolower); if (t == "png" || boost::algorithm::starts_with(t, "png")) { png_saver visitor(stream, t); visitor(image); //util::apply_visitor(visitor, image); } else if (boost::algorithm::starts_with(t, "tif")) { tiff_saver visitor(stream, t); visitor(image); //util::apply_visitor(visitor, image); } else if (boost::algorithm::starts_with(t, "jpeg")) { jpeg_saver visitor(stream, t); visitor(image); //util::apply_visitor(visitor, image); } else if (boost::algorithm::starts_with(t, "webp")) { webp_saver visitor(stream, t); visitor(image); //util::apply_visitor(visitor, image); } else throw ImageWriterException("unknown file type: " + type); } else throw ImageWriterException("Could not write to empty stream" ); } template void save_to_file(T const& image, std::string const& filename) { boost::optional type = type_from_filename(filename); if (type) { save_to_file(image, filename, *type); } else throw ImageWriterException("Could not write file to " + filename ); } template void save_to_file(T const& image, std::string const& filename, rgba_palette const& palette) { boost::optional type = type_from_filename(filename); if (type) { save_to_file(image, filename, *type, palette); } else throw ImageWriterException("Could not write file to " + filename ); } template void save_to_file(image_data_rgba8 const&, std::string const&, std::string const&); template void save_to_file(image_data_rgba8 const&, std::string const&, std::string const&, rgba_palette const& palette); template void save_to_file(image_data_rgba8 const&, std::string const&); template void save_to_file(image_data_rgba8 const&, std::string const&, rgba_palette const& palette); template std::string save_to_string(image_data_rgba8 const&, std::string const&); template std::string save_to_string(image_data_rgba8 const&, std::string const&, rgba_palette const& palette); template void save_to_file (image_view_rgba8 const&, std::string const&, std::string const&); template void save_to_file (image_view_rgba8 const&, std::string const&, std::string const&, rgba_palette const& palette); template void save_to_file (image_view_rgba8 const&, std::string const&); template void save_to_file (image_view_rgba8 const&, std::string const&, rgba_palette const& palette); template std::string save_to_string (image_view_rgba8 const&, std::string const&); template std::string save_to_string (image_view_rgba8 const&, std::string const&, rgba_palette const& palette); }