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curs_set.c revision 1.6 
      1 /*	$NetBSD: curs_set.c,v 1.6 2001/12/02 09:14:20 blymn Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1998-2000 Brett Lymn
      5  *                         (blymn (at) baea.com.au, brett_lymn (at) 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 without 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 1.6 2001/12/02 09:14:20 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 = _cursesi_screen->old_mode;
     55 	switch (visibility) {
     56 		case 0: /* invisible */
     57 			if (__tc_vi != NULL) {
     58 #ifdef DEBUG
     59 				__CTRACE("curs_set: invisible\n");
     60 #endif
     61 				_cursesi_screen->old_mode = 0;
     62 				tputs(__tc_vi, 0, __cputchar);
     63 				return old_one;
     64 			}
     65 			break;
     66 
     67 		case 1: /* normal */
     68 			if (__tc_ve != NULL) {
     69 #ifdef DEBUG
     70 				__CTRACE("curs_set: normal\n");
     71 #endif
     72 				_cursesi_screen->old_mode = 1;
     73 				tputs(__tc_ve, 0, __cputchar);
     74 				return old_one;
     75 			}
     76 			break;
     77 
     78 		case 2: /* high visibility */
     79 			if (__tc_vs != NULL) {
     80 #ifdef DEBUG
     81 				__CTRACE("curs_set: high vis\n");
     82 #endif
     83 				_cursesi_screen->old_mode = 2;
     84 				tputs(__tc_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(_cursesi_screen->old_mode);
    104 }
    105 
    106