/usr/include/mapnik/image_compositing.hpp is in libmapnik-dev 2.2.0+ds1-6build2.
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) 2011 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_COMPOSITING_HPP
#define MAPNIK_IMAGE_COMPOSITING_HPP
// stl
#include <string>
#include <boost/optional.hpp>
#include <mapnik/config.hpp>
#ifdef _MSC_VER
#include <mapnik/image_data.hpp>
#endif
namespace mapnik
{
// Compositing modes
// http://www.w3.org/TR/2009/WD-SVGCompositing-20090430/
enum composite_mode_e
{
clear = 0,
src,
dst,
src_over,
dst_over,
src_in,
dst_in,
src_out,
dst_out,
src_atop,
dst_atop,
_xor,
plus,
minus,
multiply,
screen,
overlay,
darken,
lighten,
color_dodge,
color_burn,
hard_light,
soft_light,
difference,
exclusion,
contrast,
invert,
invert_rgb,
grain_merge,
grain_extract,
hue,
saturation,
_color,
_value
//colorize_alpha
};
MAPNIK_DECL boost::optional<composite_mode_e> comp_op_from_string(std::string const& name);
MAPNIK_DECL boost::optional<std::string> comp_op_to_string(composite_mode_e comp_op);
template <typename T1, typename T2>
MAPNIK_DECL void composite(T1 & dst, T2 & src,
composite_mode_e mode,
float opacity=1,
int dx=0,
int dy=0,
bool premultiply_src=false);
#ifdef _MSC_VER
template MAPNIK_DECL void composite<mapnik::image_data_32,mapnik::image_data_32>(mapnik::image_data_32 & dst,
mapnik::image_data_32 & src,
composite_mode_e mode,
float opacity,
int dx,
int dy,
bool premultiply_src);
#endif
}
#endif // MAPNIK_IMAGE_COMPOSITING_HPP
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