268 lines
6.9 KiB
C++
268 lines
6.9 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 <mapnik/image_any.hpp>
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namespace mapnik {
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namespace detail {
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struct get_bytes_visitor
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{
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template <typename T>
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unsigned char* operator()(T & data) const
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{
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return data.bytes();
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}
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};
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struct get_bytes_visitor_const
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{
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template <typename T>
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unsigned char const* operator()(T const& data) const
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{
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return data.bytes();
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}
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};
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struct get_dtype_visitor
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{
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template <typename T>
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image_dtype operator()(T const& data) const
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{
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return data.get_dtype();
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}
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};
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struct get_width_visitor
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{
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template <typename T>
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std::size_t operator()(T const& data) const
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{
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return data.width();
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}
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};
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struct get_height_visitor
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{
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template <typename T>
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std::size_t operator()(T const& data) const
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{
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return data.height();
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}
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};
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struct get_premultiplied_visitor
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{
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template <typename T>
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bool operator()(T const& data) const
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{
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return data.get_premultiplied();
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}
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};
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struct get_painted_visitor
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{
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template <typename T>
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bool operator()(T const& data) const
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{
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return data.painted();
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}
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};
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struct get_any_size_visitor
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{
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template <typename T>
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std::size_t operator()(T const& data) const
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{
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return data.size();
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}
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};
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struct get_any_row_size_visitor
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{
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template <typename T>
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std::size_t operator()(T const& data) const
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{
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return data.row_size();
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}
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};
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struct get_offset_visitor
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{
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template <typename T>
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double operator() (T const& data) const
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{
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return data.get_offset();
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}
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};
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struct get_scaling_visitor
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{
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template <typename T>
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double operator() (T const& data) const
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{
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return data.get_scaling();
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}
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};
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struct set_offset_visitor
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{
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set_offset_visitor(double val)
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: val_(val) {}
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template <typename T>
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void operator() (T & data) const
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{
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data.set_offset(val_);
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}
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private:
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double val_;
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};
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struct set_scaling_visitor
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{
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set_scaling_visitor(double val)
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: val_(val) {}
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template <typename T>
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void operator() (T & data) const
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{
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data.set_scaling(val_);
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}
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private:
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double val_;
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};
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} // namespace detail
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MAPNIK_DECL image_any::image_any(int width,
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int height,
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image_dtype type,
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bool initialize,
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bool premultiplied,
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bool painted)
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: image_base(std::move(create_image_any(width, height, type, initialize, premultiplied, painted))) {}
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MAPNIK_DECL unsigned char const* image_any::bytes() const
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{
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return util::apply_visitor(detail::get_bytes_visitor_const(),*this);
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}
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MAPNIK_DECL unsigned char* image_any::bytes()
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{
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return util::apply_visitor(detail::get_bytes_visitor(),*this);
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}
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MAPNIK_DECL std::size_t image_any::width() const
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{
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return util::apply_visitor(detail::get_width_visitor(),*this);
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}
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MAPNIK_DECL std::size_t image_any::height() const
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{
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return util::apply_visitor(detail::get_height_visitor(),*this);
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}
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MAPNIK_DECL bool image_any::get_premultiplied() const
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{
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return util::apply_visitor(detail::get_premultiplied_visitor(),*this);
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}
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MAPNIK_DECL bool image_any::painted() const
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{
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return util::apply_visitor(detail::get_painted_visitor(),*this);
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}
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MAPNIK_DECL std::size_t image_any::size() const
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{
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return util::apply_visitor(detail::get_any_size_visitor(),*this);
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}
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MAPNIK_DECL std::size_t image_any::row_size() const
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{
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return util::apply_visitor(detail::get_any_row_size_visitor(),*this);
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}
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MAPNIK_DECL double image_any::get_offset() const
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{
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return util::apply_visitor(detail::get_offset_visitor(),*this);
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}
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MAPNIK_DECL double image_any::get_scaling() const
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{
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return util::apply_visitor(detail::get_scaling_visitor(),*this);
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}
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MAPNIK_DECL image_dtype image_any::get_dtype() const
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{
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return util::apply_visitor(detail::get_dtype_visitor(),*this);
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}
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MAPNIK_DECL void image_any::set_offset(double val)
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{
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util::apply_visitor(detail::set_offset_visitor(val),*this);
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}
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MAPNIK_DECL void image_any::set_scaling(double val)
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{
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util::apply_visitor(detail::set_scaling_visitor(val),*this);
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}
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MAPNIK_DECL image_any create_image_any(int width,
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int height,
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image_dtype type,
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bool initialize,
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bool premultiplied,
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bool painted)
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{
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switch (type)
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{
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case image_dtype_gray8:
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return image_any(image_gray8(width, height, initialize, premultiplied, painted));
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case image_dtype_gray8s:
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return image_any(image_gray8s(width, height, initialize, premultiplied, painted));
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case image_dtype_gray16:
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return image_any(image_gray16(width, height, initialize, premultiplied, painted));
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case image_dtype_gray16s:
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return image_any(image_gray16s(width, height, initialize, premultiplied, painted));
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case image_dtype_gray32:
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return image_any(image_gray32(width, height, initialize, premultiplied, painted));
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case image_dtype_gray32s:
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return image_any(image_gray32s(width, height, initialize, premultiplied, painted));
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case image_dtype_gray32f:
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return image_any(image_gray32f(width, height, initialize, premultiplied, painted));
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case image_dtype_gray64:
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return image_any(image_gray64(width, height, initialize, premultiplied, painted));
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case image_dtype_gray64s:
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return image_any(image_gray64s(width, height, initialize, premultiplied, painted));
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case image_dtype_gray64f:
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return image_any(image_gray64f(width, height, initialize, premultiplied, painted));
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case image_dtype_null:
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return image_any(image_null());
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case image_dtype_rgba8:
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case IMAGE_DTYPE_MAX:
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default:
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return image_any(image_rgba8(width, height, initialize, premultiplied, painted));
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}
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}
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} // end mapnik ns
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