xref: /illumos-gate/usr/src/lib/libeti/menu/common/scale.c (revision f3041bfa)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*	Copyright (c) 1988 AT&T	*/
23 /*	  All Rights Reserved  	*/
24 
25 
26 /*
27  * Copyright (c) 1997, by Sun Mircrosystems, Inc.
28  * All rights reserved.
29  */
30 
31 #pragma	ident	"%Z%%M%	%I%	%E% SMI"	/* SVr4.0 1.2	*/
32 
33 /*LINTLIBRARY*/
34 
35 #include <sys/types.h>
36 #include "private.h"
37 
38 /* Calculate the numbers of rows and columns needed to display the menu */
39 
40 void
41 _scale(MENU *m)
42 {
43 	int width;
44 
45 	if (Items(m) && IthItem(m, 0)) {
46 		/* Get the width of one column */
47 		width = MaxName(m) + Marklen(m);
48 
49 		if (ShowDesc(m) && MaxDesc(m)) {
50 			width += MaxDesc(m) + 1;
51 		}
52 		Itemlen(m) = width;
53 
54 		/* Multiply this by the number of columns */
55 		width = width * Cols(m);
56 		/* Add in the number of spaces between columns */
57 		width += Cols(m) - 1;
58 		Width(m) = width;
59 	}
60 }
61 
62 int
63 scale_menu(MENU *m, int *r, int *c)
64 {
65 	if (!m) {
66 		return (E_BAD_ARGUMENT);
67 	}
68 	if (Items(m) && IthItem(m, 0)) {
69 		*r = Height(m);
70 		*c = Width(m);
71 		return (E_OK);
72 	}
73 	return (E_NOT_CONNECTED);
74 }
75