map_io_png_handler.hh

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//------------------------------------------------------------------------------
// This file is part of the OpenStructure project <www.openstructure.org>
//
// Copyright (C) 2008-2020 by the OpenStructure authors
// Copyright (C) 2003-2010 by the IPLT authors
//
// 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 3.0 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 Street, Fifth Floor, Boston, MA  02110-1301  USA
//------------------------------------------------------------------------------
#ifndef OST_IO_MAP_IO_PNG_HANDLER_HH
#define OST_IO_MAP_IO_PNG_HANDLER_HH
 
#include "map_io_handler.hh"
 
namespace ost { namespace io {
 
class DLLEXPORT_OST_IO PNG: public ImageFormatBase
{
 public:
 
  PNG(bool normalize_on_save = true);
 
  bool GetNormalizeOnSave() const;
  void SetNormalizeOnSave(bool normalize_on_save);
  Real GetMaximum() const;
  Real GetMinimum() const;
 
  static String FORMAT_STRING;
 
 private:
 
  bool normalize_on_save_;
};
 
class MapIOPngHandler: public MapIOHandler {
public:
 
   public:
  virtual void Import(img::MapHandle& sh, const boost::filesystem::path& loc,const ImageFormatBase& formatstruct );
  virtual void Import(img::MapHandle& sh, std::istream& loc, const ImageFormatBase& formatstruct);
  virtual void Export(const img::MapHandle& sh, const boost::filesystem::path& loc, const ImageFormatBase& formatstruct) const;
  virtual void Export(const img::MapHandle& sh, std::ostream& loc,const ImageFormatBase& formatstruct) const;
  static bool MatchContent(unsigned char* header);
  static bool MatchType(const ImageFormatBase& type);
  static bool MatchSuffix(const String& loc);
  static bool ProvidesImport() { return true; }
  static bool ProvidesExport() { return true; }
  static String GetFormatName() { return String("Png");}
  static String GetFormatDescription()  { return String("Portable Network Graphic image format");}
};
 
typedef MapIOHandlerFactory<MapIOPngHandler> MapIOPngHandlerFactory;
 
}}
 
#endif