PImagePng.h

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/***************************************
        Auteur : Pierre Aubert
        Mail : pierre.aubert@lapp.in2p3.fr
        Licence : CeCILL-C
****************************************/
 
#ifndef __PIMAGEPNG_H__
#define __PIMAGEPNG_H__
 
#include <iostream>
#include "check_png.h"
 
#include "PColorMap.h"

typedef unsigned int NbColorByte;

class PImagePng{
        public:
                enum ColorType{
                        RGB = PNG_COLOR_TYPE_RGB,
                        RGBA = PNG_COLOR_TYPE_RGB_ALPHA
                };
                
                PImagePng();
                PImagePng(const PImagePng & other);
                virtual ~PImagePng();
                PImagePng & operator = (const PImagePng & other);
                
                bool createImage(size_t width, size_t height, PImagePng::ColorType colorType = PImagePng::RGB);
                
                bool read(const PPath & fileName);
                bool write(const PPath & fileName);
                
                void clear();
                
                void fill(color_t red, color_t green, color_t blue, color_t alpha = 255);
                
                void setColor(size_t idxWidth, size_t idxHeight, color_t red, color_t green, color_t blue);
                void setColor(size_t idxWidth, size_t idxHeight, color_t red, color_t green, color_t blue, color_t alpha);
                
                template<typename T>
                void setColor(const T * matValue, size_t nbRow, size_t nbCol, const PColorMap & colorMap);
                
                void getColor(size_t idxWidth, size_t idxHeight, color_t & red, color_t & green, color_t & blue) const;
                void getColor(size_t idxWidth, size_t idxHeight, color_t & red, color_t & green, color_t & blue, color_t & alpha) const;
                
                unsigned int getWidth() const;
                unsigned int getHeight() const;
                NbColorByte getNbBytePerPixel() const;
                
                const png_byte* getData() const;
                png_byte* getData();
                
        protected:
                void copyPImagePng(const PImagePng & other);
                
        private:
                void initialisationPImagePng();
                
                png_image p_image;
                png_byte* p_buffer;
                NbColorByte p_nbBytePerPixel;
                PImagePng::ColorType p_colorType;
};
 
#include "PImagePng_impl.h"
 
#endif