143 lines
3.3 KiB
C++
143 lines
3.3 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) 2015 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_view_any.hpp>
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namespace mapnik {
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namespace detail {
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struct get_view_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_view_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_view_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_view_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_view_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_view_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_view_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_view_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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} // end namespace detail
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std::size_t image_view_any::width() const
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{
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return util::apply_visitor(detail::get_view_width_visitor(),*this);
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}
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std::size_t image_view_any::height() const
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{
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return util::apply_visitor(detail::get_view_height_visitor(),*this);
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}
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std::size_t image_view_any::size() const
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{
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return util::apply_visitor(detail::get_view_size_visitor(),*this);
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}
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std::size_t image_view_any::row_size() const
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{
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return util::apply_visitor(detail::get_view_row_size_visitor(),*this);
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}
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bool image_view_any::get_premultiplied() const
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{
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return util::apply_visitor(detail::get_view_premultiplied_visitor(),*this);
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}
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double image_view_any::get_offset() const
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{
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return util::apply_visitor(detail::get_view_offset_visitor(),*this);
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}
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double image_view_any::get_scaling() const
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{
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return util::apply_visitor(detail::get_view_scaling_visitor(),*this);
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}
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image_dtype image_view_any::get_dtype() const
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{
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return util::apply_visitor(detail::get_view_dtype_visitor(),*this);
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}
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} // end mapnik ns
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