Watermark.h

/*
    IIPImage Server - Watermark Class
 
    Enables dynamic watermarking of images with user-defined opacity and
    random positioning within the image.
 
    Development supported by Moravian Library in Brno (Moravska zemska
    knihovna v Brne, http://www.mzk.cz/) R&D grant MK00009494301 & Old
    Maps Online (http://www.oldmapsonline.org/) from the Ministry of
    Culture of the Czech Republic.
 
 
    Copyright (C) 2010-2013 Ruven Pillay.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 3 of the License, or
    (at your option) any later version.
 
    This program 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 General Public License for more details.
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software Foundation,
    Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
*/
 
 
 
#ifndef _WATERMARK_H
#define _WATERMARK_H
 
#include <string>
 
 
 
 
class Watermark {
 
 private:
 
  unsigned int _width;
 
  unsigned int _height;
 
  unsigned int _channels;
 
  unsigned int _bpc;
 
  std::string _image;
 
  float _opacity;
 
  float _probability;
 
  bool _isSet;
 
  unsigned char* _watermark;
 
 
 public:
 
  Watermark(){
    _isSet=false;
    _watermark = NULL;
    _opacity = 0.0;
    _probability = 0.0;
  };
 
 
  Watermark( const std::string& file, float opacity, float probability ){
    _image = file;
    _width = 0;
    _height = 0;
    _channels = 0;
    _bpc = 0;
    _opacity = opacity;
    _probability = probability;
    _isSet = false;
    _watermark = NULL;
  };
 
  ~Watermark(){
    if( _watermark ) delete[] _watermark;
  };
 
 
  void apply( void* data, unsigned int width, unsigned int height, unsigned int channels, unsigned int bpc );
 
  std::string getImage(){ return _image; };
 
  float getOpacity(){ return _opacity; };
 
  float getProbability(){ return _probability; };
 
  void init();
 
  bool isSet(){
    if( _isSet ) return true;
    else return false;
  }
 
};
 
 
 
#endif