72 lines
2 KiB
C++
72 lines
2 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) 2011 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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#ifndef MAPNIK_ATTRIBUTE_HPP
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#define MAPNIK_ATTRIBUTE_HPP
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// mapnik
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#include <mapnik/value_types.hpp>
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#include <mapnik/geometry.hpp>
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// stl
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#include <string>
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namespace mapnik {
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struct attribute
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{
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std::string name_;
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explicit attribute(std::string const& name)
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: name_(name) {}
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template <typename V ,typename F>
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V const& value(F const& f) const
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{
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return f.get(name_);
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}
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std::string const& name() const { return name_;}
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};
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struct geometry_type_attribute
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{
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template <typename V, typename F>
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V value(F const& f) const
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{
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mapnik::value_integer type = 0;
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geometry_container::const_iterator itr = f.paths().begin();
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geometry_container::const_iterator end = f.paths().end();
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for ( ; itr != end; ++itr)
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{
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if (type != 0 && itr->type() != type)
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{
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return value_integer(4); // Collection
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}
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type = itr->type();
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}
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return type;
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}
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};
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}
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#endif // MAPNIK_ATTRIBUTE_HPP
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