81 lines
2.3 KiB
C++
81 lines
2.3 KiB
C++
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/*****************************************************************************
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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 <mapnik/image.hpp>
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#include <mapnik/image_reader.hpp>
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#include <mapnik/image_util.hpp>
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namespace mapnik {
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image::image(image_data_any && data) noexcept
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: data_(std::move(data)) {}
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void image::set_data(image_data_any && data)
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{
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data_ = std::move(data);
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}
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image image::read_from_file(std::string const& filename)
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{
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std::unique_ptr<image_reader> reader(get_image_reader(filename));
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if (reader)
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{
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unsigned w = reader->width();
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unsigned h = reader->height();
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image_data_any data = reader->read(0, 0, w, h);
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return image(std::move(data));
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}
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else
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{
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return image();
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}
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}
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namespace detail {
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struct save_to_file_visitor : mapnik::util::static_visitor<>
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{
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save_to_file_visitor(std::string const& filename, std::string const& format)
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: filename_(filename),
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format_(format) {}
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void operator() (image_data_rgba8 const& data) const
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{
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save_to_file(data,filename_, format_);
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}
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template <typename T>
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void operator() (T const& data) const {}
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std::string const& filename_;
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std::string const& format_;
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};
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}
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void image::save_to_file(std::string const& filename, std::string const& format)
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{
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util::apply_visitor(detail::save_to_file_visitor(filename, format), data_);
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}
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}
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