xref: /original-bsd/lib/libcurses/box.c (revision 02e832b2)
1 /*
2  * Copyright (c) 1981 Regents of the University of California.
3  * All rights reserved.
4  *
5  * %sccs.include.redist.c%
6  */
7 
8 #ifndef lint
9 static char sccsid[] = "@(#)box.c	5.10 (Berkeley) 12/30/92";
10 #endif	/* not lint */
11 
12 #include <curses.h>
13 
14 /*
15  * box --
16  *	Draw a box around the given window with "vert" as the vertical
17  *	delimiting char, and "hor", as the horizontal one.
18  */
19 int
20 box(win, vert, hor)
21 	register WINDOW *win;
22 	int vert, hor;
23 {
24 	register int endy, endx, i;
25 	register __LDATA *fp, *lp;
26 
27 	endx = win->maxx;
28 	endy = win->maxy - 1;
29 	fp = win->lines[0]->line;
30 	lp = win->lines[endy]->line;
31 	for (i = 0; i < endx; i++) {
32 		fp[i].ch = lp[i].ch = hor;
33 		fp[i].attr &= ~__STANDOUT;
34 		lp[i].attr &= ~__STANDOUT;
35 	}
36 	endx--;
37 	for (i = 0; i <= endy; i++) {
38 		win->lines[i]->line[0].ch = vert;
39 	        win->lines[i]->line[endx].ch = vert;
40 		win->lines[i]->line[0].attr &= ~__STANDOUT;
41 		win->lines[i]->line[endx].attr &= ~__STANDOUT;
42 	}
43 	if (!(win->flags & __SCROLLOK) && (win->flags & __SCROLLWIN)) {
44 		fp[0].ch = fp[endx].ch = lp[0].ch = lp[endx].ch = ' ';
45 		fp[0].attr &= ~__STANDOUT;
46 		fp[endx].attr &= ~__STANDOUT;
47 		lp[0].attr &= ~__STANDOUT;
48 		lp[endx].attr &= ~__STANDOUT;
49 	}
50 	__touchwin(win);
51 	return (CURSES_OK);
52 }
53