xref: /netbsd-src/lib/libcurses/curs_set.c (revision 481fca6e59249d8ffcf24fef7cfbe7b131bfb080)
1 /*	$NetBSD: curs_set.c,v 1.3 2000/04/24 14:09:43 blymn Exp $	*/
2 
3 /*-
4  * Copyright (c) 1998-2000 Brett Lymn
5  *                         (blymn@baea.com.au, brett_lymn@yahoo.com.au)
6  * All rights reserved.
7  *
8  * This code has been donated to The NetBSD Foundation by the Author.
9  *
10  * Redistribution and use in source and binary forms, with or without
11  * modification, are permitted provided that the following conditions
12  * are met:
13  * 1. Redistributions of source code must retain the above copyright
14  *    notice, this list of conditions and the following disclaimer.
15  * 2. The name of the author may not be used to endorse or promote products
16  *    derived from this software withough specific prior written permission
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28  *
29  *
30  */
31 
32 #include <sys/cdefs.h>
33 #ifndef lint
34 __RCSID("$NetBSD: curs_set.c,v 1.3 2000/04/24 14:09:43 blymn Exp $");
35 #endif				/* not lint */
36 
37 #include "curses.h"
38 #include "curses_private.h"
39 
40 static int old_mode = 2; /* cursor is set to high vis on start */
41 
42 /*
43  * curs_set --
44  *    Set the visibility of the cursor, 0 means invisible, 1 means normal
45  *    visibility and 2 means high visibility.  Return the previous
46  *    visibility iff the terminal supports the new visibility otherwise
47  *    return ERR.
48  */
49 int
50 curs_set(int visibility)
51 {
52 	int old_one;
53 
54 	old_one = old_mode;
55 	switch (visibility) {
56 		case 0: /* invisible */
57 			if (VI != NULL) {
58 #ifdef DEBUG
59 				__CTRACE("curs_set: invisible\n");
60 #endif
61 				old_mode = 0;
62 				tputs(VI, 0, __cputchar);
63 				return old_one;
64 			}
65 			break;
66 
67 		case 1: /* normal */
68 			if (VE != NULL) {
69 #ifdef DEBUG
70 				__CTRACE("curs_set: normal\n");
71 #endif
72 				old_mode = 1;
73 				tputs(VE, 0, __cputchar);
74 				return old_one;
75 			}
76 			break;
77 
78 		case 2: /* high visibility */
79 			if (VS != NULL) {
80 #ifdef DEBUG
81 				__CTRACE("curs_set: high vis\n");
82 #endif
83 				old_mode = 2;
84 				tputs(VS, 0, __cputchar);
85 				return old_one;
86 			}
87 			break;
88 
89 		default:
90 			break;
91 	}
92 
93 	return ERR;
94 }
95 
96 /*
97  * __restore_cursor_vis --
98  *     Restore the old cursor visibility.
99  */
100 void
101 __restore_cursor_vis(void)
102 {
103 	curs_set(old_mode);
104 }
105 
106