src/PNGImage.h

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#ifndef PNGIMAGE_H
#define PNGIMAGE_H

#include<exception>

#include "Image.h"


class PNGImage : public Image
{
public:
    PNGImage(int resX, int resY);

    virtual ~PNGImage();

    virtual bool read(const std::string & fileName);

    virtual void write(const std::string & fileName) const;



  private:

    class PNGFileOpenException : public std::exception
    {
      public:

        PNGFileOpenException(const std::string filename) : mFileName(filename)
        {}
        
        virtual ~PNGFileOpenException() throw() {}

        const char* what() const throw()
        {
            std::string error = "Exception in PNGParser\n This file returned a bad status: \"";
            error += mFileName;
            error += "\"";
            return error.c_str();
        }

      private:
        const std::string mFileName; 
    };
};


#endif

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