337 lines
11 KiB
C++
337 lines
11 KiB
C++
/*****************************************************************************
|
|
*
|
|
* 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_UTIL_HPP
|
|
#define MAPNIK_IMAGE_UTIL_HPP
|
|
|
|
// mapnik
|
|
#include <mapnik/config.hpp>
|
|
|
|
#ifdef _MSC_VER
|
|
#include <mapnik/graphics.hpp>
|
|
#endif
|
|
|
|
// boost
|
|
#include <boost/algorithm/string/predicate.hpp>
|
|
#include <boost/optional.hpp>
|
|
|
|
// stl
|
|
#include <string>
|
|
#include <cmath>
|
|
|
|
namespace mapnik {
|
|
|
|
// fwd declares
|
|
class Map;
|
|
class rgba_palette;
|
|
class image_32;
|
|
|
|
class ImageWriterException : public std::exception
|
|
{
|
|
private:
|
|
std::string message_;
|
|
public:
|
|
ImageWriterException(std::string const& message)
|
|
: message_(message) {}
|
|
|
|
~ImageWriterException() throw() {}
|
|
|
|
virtual const char* what() const throw()
|
|
{
|
|
return message_.c_str();
|
|
}
|
|
};
|
|
|
|
#if defined(HAVE_CAIRO)
|
|
MAPNIK_DECL void save_to_cairo_file(mapnik::Map const& map,
|
|
std::string const& filename,
|
|
double scale_factor=1.0,
|
|
double scale_denominator=0.0);
|
|
MAPNIK_DECL void save_to_cairo_file(mapnik::Map const& map,
|
|
std::string const& filename,
|
|
std::string const& type,
|
|
double scale_factor=1.0,
|
|
double scale_denominator=0.0);
|
|
#endif
|
|
|
|
template <typename T>
|
|
MAPNIK_DECL void save_to_file(T const& image,
|
|
std::string const& filename,
|
|
std::string const& type);
|
|
|
|
template <typename T>
|
|
MAPNIK_DECL void save_to_file(T const& image,
|
|
std::string const& filename,
|
|
std::string const& type,
|
|
rgba_palette const& palette);
|
|
|
|
// guess type from file extension
|
|
template <typename T>
|
|
MAPNIK_DECL void save_to_file(T const& image,
|
|
std::string const& filename);
|
|
|
|
template <typename T>
|
|
MAPNIK_DECL void save_to_file(T const& image,
|
|
std::string const& filename,
|
|
rgba_palette const& palette);
|
|
|
|
template <typename T>
|
|
MAPNIK_DECL std::string save_to_string(T const& image,
|
|
std::string const& type);
|
|
|
|
template <typename T>
|
|
MAPNIK_DECL std::string save_to_string(T const& image,
|
|
std::string const& type,
|
|
rgba_palette const& palette);
|
|
|
|
template <typename T>
|
|
MAPNIK_DECL void save_to_stream
|
|
(
|
|
T const& image,
|
|
std::ostream & stream,
|
|
std::string const& type,
|
|
rgba_palette const& palette
|
|
);
|
|
|
|
template <typename T>
|
|
MAPNIK_DECL void save_to_stream
|
|
(
|
|
T const& image,
|
|
std::ostream & stream,
|
|
std::string const& type
|
|
);
|
|
|
|
template <typename T>
|
|
void save_as_png(T const& image,
|
|
std::string const& filename,
|
|
rgba_palette const& palette);
|
|
|
|
#if defined(HAVE_JPEG)
|
|
template <typename T>
|
|
void save_as_jpeg(std::string const& filename,
|
|
int quality,
|
|
T const& image);
|
|
#endif
|
|
|
|
inline bool is_png (std::string const& filename)
|
|
{
|
|
return boost::algorithm::iends_with(filename,std::string(".png"));
|
|
}
|
|
|
|
inline bool is_jpeg (std::string const& filename)
|
|
{
|
|
return boost::algorithm::iends_with(filename,std::string(".jpg")) ||
|
|
boost::algorithm::iends_with(filename,std::string(".jpeg"));
|
|
}
|
|
|
|
inline bool is_tiff (std::string const& filename)
|
|
{
|
|
return boost::algorithm::iends_with(filename,std::string(".tif")) ||
|
|
boost::algorithm::iends_with(filename,std::string(".tiff"));
|
|
}
|
|
|
|
inline bool is_pdf (std::string const& filename)
|
|
{
|
|
return boost::algorithm::iends_with(filename,std::string(".pdf"));
|
|
}
|
|
|
|
inline bool is_svg (std::string const& filename)
|
|
{
|
|
return boost::algorithm::iends_with(filename,std::string(".svg"));
|
|
}
|
|
|
|
inline bool is_ps (std::string const& filename)
|
|
{
|
|
return boost::algorithm::iends_with(filename,std::string(".ps"));
|
|
}
|
|
|
|
inline bool is_webp (std::string const& filename)
|
|
{
|
|
return boost::algorithm::iends_with(filename,std::string(".webp"));
|
|
}
|
|
|
|
|
|
inline boost::optional<std::string> type_from_filename(std::string const& filename)
|
|
|
|
{
|
|
using result_type = boost::optional<std::string>;
|
|
if (is_png(filename)) return result_type("png");
|
|
if (is_jpeg(filename)) return result_type("jpeg");
|
|
if (is_tiff(filename)) return result_type("tiff");
|
|
if (is_pdf(filename)) return result_type("pdf");
|
|
if (is_svg(filename)) return result_type("svg");
|
|
if (is_ps(filename)) return result_type("ps");
|
|
if (is_webp(filename)) return result_type("webp");
|
|
return result_type();
|
|
}
|
|
|
|
inline std::string guess_type( std::string const& filename )
|
|
{
|
|
std::string::size_type idx = filename.find_last_of(".");
|
|
if ( idx != std::string::npos ) {
|
|
return filename.substr( idx + 1 );
|
|
}
|
|
return "<unknown>";
|
|
}
|
|
|
|
template <typename T>
|
|
double distance(T x0,T y0,T x1,T y1)
|
|
{
|
|
double dx = x1-x0;
|
|
double dy = y1-y0;
|
|
return std::sqrt(dx * dx + dy * dy);
|
|
}
|
|
|
|
|
|
// add 1-px border around image - useful for debugging alignment issues
|
|
template <typename T>
|
|
void add_border(T & image)
|
|
{
|
|
for (unsigned x = 0; x < image.width();++x)
|
|
{
|
|
image(x,0) = 0xff0000ff; // red
|
|
image(x,image.height()-1) = 0xff00ff00; //green
|
|
}
|
|
for (unsigned y = 0; y < image.height();++y)
|
|
{
|
|
image(0,y) = 0xff00ffff; //yellow
|
|
image(image.width()-1,y) = 0xffff0000; // blue
|
|
}
|
|
}
|
|
|
|
|
|
|
|
/////////// save_to_file //////////////////////////////////////////////////
|
|
|
|
MAPNIK_DECL void save_to_file(image_32 const& image,
|
|
std::string const& file);
|
|
|
|
MAPNIK_DECL void save_to_file (image_32 const& image,
|
|
std::string const& file,
|
|
std::string const& type);
|
|
|
|
MAPNIK_DECL void save_to_file (image_32 const& image,
|
|
std::string const& file,
|
|
std::string const& type,
|
|
rgba_palette const& palette);
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
|
|
|
|
MAPNIK_DECL std::string save_to_string(image_32 const& image,
|
|
std::string const& type);
|
|
|
|
MAPNIK_DECL std::string save_to_string(image_32 const& image,
|
|
std::string const& type,
|
|
rgba_palette const& palette);
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
|
|
MAPNIK_DECL void save_to_stream(image_32 const& image,
|
|
std::ostream & stream,
|
|
std::string const& type,
|
|
rgba_palette const& palette);
|
|
|
|
MAPNIK_DECL void save_to_stream(image_32 const& image,
|
|
std::ostream & stream,
|
|
std::string const& type);
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
|
|
#ifdef _MSC_VER
|
|
template MAPNIK_DECL void save_to_file<image_data_32>(image_data_32 const&,
|
|
std::string const&,
|
|
std::string const&,
|
|
rgba_palette const&);
|
|
|
|
template MAPNIK_DECL void save_to_file<image_data_32>(image_data_32 const&,
|
|
std::string const&,
|
|
std::string const&);
|
|
|
|
template MAPNIK_DECL void save_to_file<image_data_32>(image_data_32 const&,
|
|
std::string const&,
|
|
rgba_palette const&);
|
|
|
|
template MAPNIK_DECL void save_to_file<image_data_32>(image_data_32 const&,
|
|
std::string const&);
|
|
|
|
|
|
template MAPNIK_DECL void save_to_file<image_view<image_data_32> > (image_view<image_data_32> const&,
|
|
std::string const&,
|
|
std::string const&,
|
|
rgba_palette const&);
|
|
|
|
template MAPNIK_DECL void save_to_file<image_view<image_data_32> > (image_view<image_data_32> const&,
|
|
std::string const&,
|
|
std::string const&);
|
|
|
|
template MAPNIK_DECL void save_to_file<image_view<image_data_32> > (image_view<image_data_32> const&,
|
|
std::string const&,
|
|
rgba_palette const&);
|
|
|
|
template MAPNIK_DECL void save_to_file<image_view<image_data_32> > (image_view<image_data_32> const&,
|
|
std::string const&);
|
|
|
|
template MAPNIK_DECL std::string save_to_string<image_data_32>(image_data_32 const&,
|
|
std::string const&);
|
|
|
|
template MAPNIK_DECL std::string save_to_string<image_data_32>(image_data_32 const&,
|
|
std::string const&,
|
|
rgba_palette const&);
|
|
|
|
template MAPNIK_DECL std::string save_to_string<image_view<image_data_32> > (image_view<image_data_32> const&,
|
|
std::string const&);
|
|
|
|
template MAPNIK_DECL std::string save_to_string<image_view<image_data_32> > (image_view<image_data_32> const&,
|
|
std::string const&,
|
|
rgba_palette const&);
|
|
|
|
template MAPNIK_DECL void save_to_stream<image_data_32>(
|
|
image_data_32 const& image,
|
|
std::ostream & stream,
|
|
std::string const& type,
|
|
rgba_palette const& palette
|
|
);
|
|
|
|
template MAPNIK_DECL void save_to_stream<image_data_32>(
|
|
image_data_32 const& image,
|
|
std::ostream & stream,
|
|
std::string const& type
|
|
);
|
|
|
|
template MAPNIK_DECL void save_to_stream<image_view<image_data_32> > (
|
|
image_view<image_data_32> const& image,
|
|
std::ostream & stream,
|
|
std::string const& type,
|
|
rgba_palette const& palette
|
|
);
|
|
|
|
template MAPNIK_DECL void save_to_stream<image_view<image_data_32> > (
|
|
image_view<image_data_32> const& image,
|
|
std::ostream & stream,
|
|
std::string const& type
|
|
);
|
|
#endif
|
|
|
|
}
|
|
|
|
#endif // MAPNIK_IMAGE_UTIL_HPP
|