megazeux/hexchar.cpp

/* $Id$
 * MegaZeux
 *
 * Copyright (C) 1996 Greg Janson
 * Copyright (C) 1998 Matthew D. Williams - dbwilli@scsn.net
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

// Procedures to write hex strs onscreen

#include "hexchar.h"
#include "graphics.h"
#include <stdlib.h>
#include "string.h"

#define num2hex(x) ((x)>9 ? 87+(x) : 48+(x))

//DOES NOT PRESERVE MOUSE CURSOR
void write_hex_byte(unsigned char byte,unsigned char color,int x,int y,
 unsigned int segment) {
	int t1,t2;
	t1=(byte&240)>>4;
	t1=num2hex(t1);
	t2=byte&15;
	t2=num2hex(t2);
	draw_char(t1,color,x,y,segment);
	draw_char(t2,color,x+1,y,segment);
}

//Set rightalign to print the rightmost char at xy and proceed to the left
//minlen is the minimum length to print. Pad with 0.
//DOES NOT PRESERVE MOUSE CURSOR
void write_number(int number,unsigned char color,int x,int y,
 unsigned int segment,char minlen,char rightalign,int base) {
	char temp[7];
	int t1,t2;
	itoa(number,temp,base);
	if(rightalign) {
		t1=str_len(temp);
		if(minlen>t1) t1=minlen;
		x-=t1-1;
		}
	if((t2=str_len(temp))<minlen) {
		t2=minlen-t2;
		for(t1=0;t1<t2;t1++)
			draw_char('0',color,x++,y,segment);
		}
	write_string(temp,x,y,color,segment);
}