#ifndef _PIXMAP_H
#define _PIXMAP_H

//
//
// Owen Astrachan: for Duke CPS (10/20/93 -- modified 11/3/93)
//                 modified again on 3/21/94
//                 modified again on 11/28/94
//                 modified on 4/13/95
//                 modified on 9/24/95 (matrix class)
//
// class for two dimensional array representing pixmap (pixel map)
// pixmap is the term used in X-windows programming
//
//
// this program reads and writes maps in the format called P1 (.pbm)
//
// the program xv can be used to view the pixmaps (see also xpaint)
//
//

#include "matrix.h"

class Pixmap
{
  public:
    
    Pixmap();                           // constructor (0-sized bitmap)
    Pixmap(int rows, int cols);         // Initialize with a size
    ~Pixmap();                          // destructor (nothing needed now)
    void Read(istream &);               // read pixmap from file 
    void HorizReflect();                // reflect pixmap horizontally
    void VertReflect();                 // reflect pixmap vertically
    void Invert();                      // invert pixmap
    void Enhance(int size);             // median filter
    void Expand(int rowExp,int colExp); // expand pixmap row x column	

    void Write(ostream &) const;        // write bitmap to file
    void Compress(ostream &) const;     // write bitmap in compressed form

  private:
	
    void ReadCompressedFile(istream & input); //Read a Compressed File
    void ReadNormalFile(istream & input);     //Read Normal Data File
    void RandomImage();                       //Fill In data with random values
    string myKind;           // P1, C1, P2, etc.
    string myCreator;        // # program that created pixmap
    int myGrayLevel;         // # different grays
    Matrix<short> myImage;   // two-d array of "pixels"
};

#endif /* _PIXMAP_H not defined */