#ifndef _COMPONENT_H

#define _COMPONENT_H

#include "stdlib.h"

#include <iostream.h>

#include "Point.h"

#include "system.h" 

#include "list.h"

#include "RLEMap.h"

class BitMap;

class Component;

class Components: public List

{

 public:

  Components();

  ~Components();

  Component * compAt(Point p);   // returns smallest component that contains

                                 // this point.

};

class Component{

      public:

        friend class Word;

       	Component(Point ul, Point lr)

	  :ful(ul), flr(lr), fnumBits(0),fasciiId(NULL), fconfid(0),

	  charGroup(0), ffontId(0)

	    { fproperty = new Property[numProperties];

	      for (int i = 0; i < numProperties; i++)

	         fproperty[i] = 0;};

	Component()

	  :ful(-1), flr(-1), fnumBits(0),fasciiId(0),fconfid(0),

	  charGroup(0), ffontId(0)

	    { fproperty = new Property[numProperties];

	      for (int i = 0; i < numProperties; i++)

	         fproperty[i] = 0;};

	~Component(){

	    if (fproperty != NULL) delete fproperty;

	    if (fasciiId != NULL)  delete fasciiId;

	  }

         Component * copy(); // make a new copy of the component

	 inline Point & ul() {return ful;};

	 inline Point & lr() {return flr;};

	 inline double width() {return (double)(flr.x() - ful.x() + 1); };

	 inline double height() {return (double)(flr.y() - ful.y() + 1); };

         inline double area() { return width()*height(); };

         inline int & numBits(){return fnumBits;};

	 short int charGroup; // values 0-3: 0=acemno, 1=gpqy, 2=dfhikl, 3=j([}

         int vertShrink(BitMap * bitmap);	

         int horizontalShrink(BitMap * bitmap);

	int AddToComponent(ListElement* intrvl, RLEMap* rlemap, int horizMerge);

	/*--------------------------------------------------------------

	Primary Purpose: Extend boundaries of component by connected intervals.       Arguments: startIntrvl is interval to start from

        Return Value: Number of intervals added. 

	Effects: Updates component's LR and UL. Deletes all added intervals. 

	----------------------------------------------------------------*/

	 // Access entire property vector

	 inline Property * properties()

	   {return fproperty;}

	 // Set or read one value in property vector

	 inline Property & property(int p) // Possibly use overload []

	   {return fproperty[p];};

	 // Set or read ascii id;

	 inline Character & asciiId(){ return fasciiId[0];};

	 inline int asciiLen(){return strlen(fasciiId);}

	// Set or read font id;

	inline short int & fontId() {return ffontId;};

	 inline Confidence & confid(){ return fconfid; };

	// Determine heuristic distance between this and comp

	 Distance distance(Component * comp);

         Point Component::center() { return (Point((ful.x() + flr.x())/2, 

						  (ful.y() +flr.y())/2)); };

	// Use the BitMap map to set the property vector for 

        // this component

	void setProperties(RLEMap * map);

	void setProperties(BitMap * map);

	void setSectionFlags(short int hflag[], short int vflag[]);

	void display_bounding_box();

        void display_bounding_box(char * color);     

        void display_bounding_box(char * color,  double scaleFactor,  

				  char * window);

	Distance recognize(Component * learnedchars);

	// find best match in learned characters.  Set ascii value

        // and return distance.

	Distance recognize(Components * learnedgroups, bool allGroups=FALSE);

	// find best match from learned character groups. Set ascii value

        // and return distance.

        void join(Component * comp);

        inline bool operator < (Component * comp)

                 {if((ul().y() < comp->ul().y()))  return TRUE;

		  if((ul().y() > comp->ul().y())) return FALSE;

		  // otherwise if y values are equal

		  return ((ul().x() <= comp->ul().x()) ?  TRUE : FALSE);

		  }

        inline bool operator > (Component * comp)

                 {if((ul().y() > comp->ul().y()))  return TRUE;

		  if((ul().y() < comp->ul().y())) return FALSE;

		  // otherwise if y values are equal

		  return((ul().x() > comp->ul().x()) ? TRUE : FALSE);

		 }        

  inline bool xoverlap(Component * comp)

                  {

		   if (ful.x() <= comp->ul().x() && comp->ul().x() <= flr.x())

		     return TRUE;

		   if (comp->ul().x() < ful.x() && ful.x() < comp->lr().x())

		     return TRUE;

		   return FALSE;

		     }

        Property * fproperty;

       	char * fasciiId;

      private:

       	Point ful;

      	Point flr;

       	int fnumBits;

	short int ffontId;

       	Confidence fconfid;     

};

#endif