/usr/include/mapnik/image_filter_grammar.hpp is in libmapnik-dev 2.2.0+ds1-7+b2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* This file is part of Mapnik (c++ mapping toolkit)
*
* Copyright (C) 2012 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
*
*****************************************************************************/
#ifndef MAPNIK_IMAGE_FILITER_GRAMMAR_HPP
#define MAPNIK_IMAGE_FILITER_GRAMMAR_HPP
// boost
#include <boost/spirit/include/qi.hpp>
#include <boost/fusion/include/adapt_struct.hpp>
// mapnik
#include <mapnik/css_color_grammar.hpp>
#include <mapnik/image_filter.hpp>
// stl
#include <vector>
BOOST_FUSION_ADAPT_STRUCT(
mapnik::filter::color_stop,
(mapnik::color, color )
(double, offset)
)
namespace mapnik {
namespace qi = boost::spirit::qi;
struct percent_offset_impl
{
template <typename T>
struct result
{
typedef double type;
};
double operator() (double val) const
{
double result = std::abs(val/100.0);
if (result > 1.0) result = 1.0;
return result;
}
};
template <typename Iterator, typename ContType>
struct image_filter_grammar :
qi::grammar<Iterator, ContType(), qi::ascii::space_type>
{
image_filter_grammar();
qi::rule<Iterator, ContType(), qi::ascii::space_type> start;
qi::rule<Iterator, ContType(), qi::ascii::space_type> filter;
qi::rule<Iterator, qi::locals<int,int>, void(ContType&), qi::ascii::space_type> agg_blur_filter;
//qi::rule<Iterator, qi::locals<double,double,double,double,double,double,double,double>,
// void(ContType&), qi::ascii::space_type> hsla_filter;
qi::rule<Iterator, qi::locals<mapnik::filter::colorize_alpha, mapnik::filter::color_stop>, void(ContType&), qi::ascii::space_type> colorize_alpha_filter;
qi::rule<Iterator, qi::ascii::space_type> no_args;
qi::uint_parser< unsigned, 10, 1, 3 > radius_;
css_color_grammar<Iterator> css_color_;
qi::rule<Iterator,void(mapnik::filter::color_stop &),qi::ascii::space_type> color_stop_offset;
phoenix::function<percent_offset_impl> percent_offset;
};
}
#endif // MAPNIK_IMAGE_FILITER_PARSER_HPP
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