[unix-history] / usr / src / lib / libcurses / addch.c

/*
 * Copyright (c) 1980 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#ifndef lint
static char sccsid[] = "@(#)addch.c	5.1 (Berkeley) %G%";
#endif not lint

# include	"curses.ext"

/*
 *	This routine adds the character to the current position
 *
 */
waddch(win, c)
reg WINDOW	*win;
char		c;
{
	reg int		x, y;
	reg WINDOW	*wp;
	reg int		newx;

	x = win->_curx;
	y = win->_cury;
# ifdef FULLDEBUG
	fprintf(outf, "ADDCH('%c') at (%d, %d)\n", c, y, x);
# endif
	switch (c) {
	  case '\t':
		for (newx = x + (8 - (x & 07)); x < newx; x++)
			if (waddch(win, ' ') == ERR)
				return ERR;
		return OK;

	  default:
# ifdef FULLDEBUG
		fprintf(outf, "ADDCH: 1: y = %d, x = %d, firstch = %d, lastch = %d\n", y, x, win->_firstch[y], win->_lastch[y]);
# endif
		if (win->_flags & _STANDOUT)
			c |= _STANDOUT;
		set_ch(win, y, x, c);
		win->_y[y][x++] = c;
		if (x >= win->_maxx) {
			x = 0;
newline:
			if (++y >= win->_maxy)
				if (win->_scroll) {
					scroll(win);
					--y;
				}
				else
					return ERR;
		}
# ifdef FULLDEBUG
		fprintf(outf, "ADDCH: 2: y = %d, x = %d, firstch = %d, lastch = %d\n", y, x, win->_firstch[y], win->_lastch[y]);
# endif
		break;
	  case '\n':
		wclrtoeol(win);
		if (!NONL)
			x = 0;
		goto newline;
	  case '\r':
		x = 0;
		break;
	  case '\b':
		if (--x < 0)
			x = 0;
		break;
	}
	win->_curx = x;
	win->_cury = y;
	return OK;
}

/*
 * set_ch:
 *	Set the first and last change flags for this window.
 */
static
set_ch(win, y, x, ch)
reg WINDOW	*win;
int		y, x;
{
# ifdef	FULLDEBUG
	fprintf(outf, "SET_CH(%0.2o, %d, %d)\n", win, y, x);
# endif
	if (win->_y[y][x] != ch) {
		x += win->_ch_off;
		if (win->_firstch[y] == _NOCHANGE)
			win->_firstch[y] = win->_lastch[y] = x;
		else if (x < win->_firstch[y])
			win->_firstch[y] = x;
		else if (x > win->_lastch[y])
			win->_lastch[y] = x;
# ifdef FULLDEBUG
		fprintf(outf, "SET_CH: change gives f/l: %d/%d [%d/%d]\n",
			win->_firstch[y], win->_lastch[y],
			win->_firstch[y] - win->_ch_off,
			win->_lastch[y] - win->_ch_off);
# endif
	}
}
Commit	Line	Data
6e1c93d0 DF	1	/*
	2	* Copyright (c) 1980 Regents of the University of California.
	3	* All rights reserved. The Berkeley software License Agreement
	4	* specifies the terms and conditions for redistribution.
	5	*/
	6
	7	#ifndef lint
	8	static char sccsid[] = "@(#)addch.c 5.1 (Berkeley) %G%";
	9	#endif not lint
	10
8b28dacd KA	11	# include "curses.ext"
	12
	13	/*
	14	* This routine adds the character to the current position
	15	*
8b28dacd KA	16	*/
	17	waddch(win, c)
	18	reg WINDOW *win;
	19	char c;
	20	{
	21	reg int x, y;
60d72089	22	reg WINDOW *wp;
84d35f99	23	reg int newx;
8b28dacd KA	24
	25	x = win->_curx;
	26	y = win->_cury;
	27	# ifdef FULLDEBUG
	28	fprintf(outf, "ADDCH('%c') at (%d, %d)\n", c, y, x);
	29	# endif
8b28dacd KA	30	switch (c) {
8b28dacd KA	31	case '\t':
b7b377b8	32	for (newx = x + (8 - (x & 07)); x < newx; x++)
8b28dacd KA	33	if (waddch(win, ' ') == ERR)
	34	return ERR;
	35	return OK;
60d72089	36
8b28dacd KA	37	default:
	38	# ifdef FULLDEBUG
	39	fprintf(outf, "ADDCH: 1: y = %d, x = %d, firstch = %d, lastch = %d\n", y, x, win->_firstch[y], win->_lastch[y]);
	40	# endif
	41	if (win->_flags & _STANDOUT)
	42	c \|= _STANDOUT;
84d35f99	43	set_ch(win, y, x, c);
8b28dacd KA	44	win->_y[y][x++] = c;
8b28dacd KA	45	if (x >= win->_maxx) {
8b28dacd	46	x = 0;
4ce7bc0f KA	47	newline:
4ce7bc0f KA	48	if (++y >= win->_maxy)
8b28dacd	49	if (win->_scroll) {
8b28dacd KA	50	scroll(win);
	51	--y;
	52	}
	53	else
	54	return ERR;
	55	}
	56	# ifdef FULLDEBUG
	57	fprintf(outf, "ADDCH: 2: y = %d, x = %d, firstch = %d, lastch = %d\n", y, x, win->_firstch[y], win->_lastch[y]);
	58	# endif
	59	break;
	60	case '\n':
	61	wclrtoeol(win);
4ce7bc0f KA	62	if (!NONL)
	63	x = 0;
	64	goto newline;
8b28dacd KA	65	case '\r':
	66	x = 0;
	67	break;
	68	case '\b':
	69	if (--x < 0)
	70	x = 0;
	71	break;
	72	}
	73	win->_curx = x;
	74	win->_cury = y;
	75	return OK;
	76	}
60d72089 KA	77
	78	/*
	79	* set_ch:
	80	* Set the first and last change flags for this window.
	81	*/
	82	static
84d35f99	83	set_ch(win, y, x, ch)
60d72089	84	reg WINDOW *win;
9fcd8c35	85	int y, x;
84d35f99 JB	86	{
	87	# ifdef FULLDEBUG
	88	fprintf(outf, "SET_CH(%0.2o, %d, %d)\n", win, y, x);
	89	# endif
60d72089	90	if (win->_y[y][x] != ch) {
84d35f99	91	x += win->_ch_off;
60d72089	92	if (win->_firstch[y] == _NOCHANGE)
84d35f99	93	win->_firstch[y] = win->_lastch[y] = x;
60d72089	94	else if (x < win->_firstch[y])
84d35f99	95	win->_firstch[y] = x;
60d72089	96	else if (x > win->_lastch[y])
84d35f99 JB	97	win->_lastch[y] = x;
	98	# ifdef FULLDEBUG
	99	fprintf(outf, "SET_CH: change gives f/l: %d/%d [%d/%d]\n",
	100	win->_firstch[y], win->_lastch[y],
	101	win->_firstch[y] - win->_ch_off,
	102	win->_lastch[y] - win->_ch_off);
	103	# endif
60d72089 KA	104	}
60d72089 KA	105	}