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

# include	"curses.ext"

/*
 *	This routine scrolls the window up a line.
 *
 * %G% (Berkeley) @(#)scroll.c	1.2
 */
scroll(win)
reg WINDOW	*win; {

	reg char	*sp;
	reg int		i;
	reg char	*temp;

	if (!win->_scroll)
		return ERR;
	temp = win->_y[0];
	for (i = 0; i < win->_maxy - 2; i++)
		win->_y[i] = win->_y[i+1];
	for (sp = temp; sp - temp < win->_maxx; )
		*sp++ = ' ';
	win->_y[win->_maxy - 1] = temp;
	win->_cury--;
	if (win == curscr) {
		putchar('\n');
		if (!NONL)
			win->_curx = 0;
# ifdef DEBUG
		fprintf(outf, "SCROLL: win == curscr\n");
# endif
	}
# ifdef DEBUG
	else
		fprintf(outf, "SCROLL: win [0%o] != curscr [0%o]\n",win,curscr);
# endif
	return OK;
}
Commit	Line	Data
064c6fd5 KA	1	# include "curses.ext"
	2
	3	/*
	4	* This routine scrolls the window up a line.
	5	*
8da28f22	6	* %G% (Berkeley) @(#)scroll.c 1.2
064c6fd5 KA	7	*/
	8	scroll(win)
	9	reg WINDOW *win; {
	10
	11	reg char *sp;
	12	reg int i;
	13	reg char *temp;
	14
	15	if (!win->_scroll)
	16	return ERR;
	17	temp = win->_y[0];
8da28f22	18	for (i = 0; i < win->_maxy - 2; i++)
064c6fd5 KA	19	win->_y[i] = win->_y[i+1];
	20	for (sp = temp; sp - temp < win->_maxx; )
	21	*sp++ = ' ';
	22	win->_y[win->_maxy - 1] = temp;
	23	win->_cury--;
	24	if (win == curscr) {
	25	putchar('\n');
	26	if (!NONL)
	27	win->_curx = 0;
	28	# ifdef DEBUG
	29	fprintf(outf, "SCROLL: win == curscr\n");
	30	# endif
	31	}
	32	# ifdef DEBUG
	33	else
	34	fprintf(outf, "SCROLL: win [0%o] != curscr [0%o]\n",win,curscr);
	35	# endif
	36	return OK;
	37	}