#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