1 #ifndef _RLEPair_H

     2 #define _RLEPair_H

     3 

     4 #include "list.h"

     5 

     6 

     7 // Indicates a series of black pixels in a row.

     8 class RLEPair {

     9 public:

    10 

    11   RLEPair()

    12     :start(0),end(0) {};

    13 

    14   RLEPair(int first, int last, int thisRow)

    15     :start(first), end(last), row(thisRow) {};

    16   RLEPair(int first, int last)

    17     :start(first), end(last), row(-1) {};

    18   ~RLEPair() {};

    19 

    20   short int start;

    21   short int end;

    22   short int row;

    23 };

    24 

    25 

    26 

    27 class RLEPairs :public List {

    28  public:

    29 

    30   RLEPairs(int row_num);

    31   ~RLEPairs();

    32 

    33   // Create RLEPair Representation of contents read from TIFF file

    34   void fill(unsigned char * contents, int contentsLength, int contentsRow);

    35   int pixelsBetween(int start, int end);

    36   int numPixels;

    37   void shift(int);

    38   void draw_pairs(char * window, double scaleFactor, 

    39 		  int y_coord, char* color, double width);

    40   void print_pairs();

    41   

    42   RLEPairs * extract(int startcol, int endcol);   

    43   // create a copy of this from  startcol to endcol.

    44  // and return pointer to RLEPairs

    45    

    46   void  merge(RLEPairs * pairs);

    47   // Merges  pairs into this.

    48 

    49   private:

    50     int row;

    51  

    52   

    53 };

    54 

    55 #endif

    56 

    57 

    58 

    59 

    60 

    61 

    62 

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    69