/*
 * This Software is the original work of Daniel TUNG 
 * This Software is submitted in partial fulfillment of the
 * requirements for the degree of BCSE.
 * Dept. Computer Science, Monash University 2000
 *
 * Copyright (c) 2000 beetung@cs.monash.edu.au
 *                    beetung@geocities.com
 */

#ifndef BOX_H
#define BOX_H


extern "C" {
#include <X11/X.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
};


////
//// A box area representing the critical area or so on screen.
////
////////////////////////////////////////
class Box { 
////////////////////////////////////////
  public: 
	 Box(): xi(-1), yi(-1), xe(-1), ye(-1), data(0) {}

	 Box(int ix, int iy, int ex, int ey, unsigned char *d) 
	 : xi(ix), yi(iy), xe(ex), ye(ey), data(d) 
	 {}

	~Box();

	 Box(int bpl, int bpp) {
	  bytes_per_line()=(bpl);
	  bytes_per_pixel()=(bpp);
	 }

	 ///	
	 /// set the data area
	 ///	
	void setData( unsigned char *d) { data = d; } 
	void setColor(XColor *c) { color = c; } 

	 ///	
	 /// highlight box
	 ///
	void drawBoxNow(void)	{

	  for (int j=xi; j !=xe; j++) {
		data[j] =0;
	  }



	}


  private:
	int xi, yi, xe, ye;
	XColor *color;		// color of box highlight
	unsigned char *data;	// data area


	/// common data across all variables!!!
  private: 
	static int& bytes_per_line(void) {
		static int _bpl=-1  ;
		return _bpl;
	}

	static int& bytes_per_pixel(void) {
		static int _bpp=-1  ;
		return _bpp;
	}

  protected: 
}; 

#endif