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curs_set.c revision 1.11 
      1 /*	$NetBSD: curs_set.c,v 1.11 2021/09/06 07:03:49 rin 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 1.11 2021/09/06 07:03:49 rin Exp $");
     35 #endif				/* not lint */
     36 
     37 #include "curses.h"
     38 #include "curses_private.h"
     39 
     40 /*
     41  * curs_set --
     42  *    Set the visibility of the cursor, 0 means invisible, 1 means normal
     43  *    visibility and 2 means high visibility.  Return the previous
     44  *    visibility iff the terminal supports the new visibility otherwise
     45  *    return ERR.
     46  */
     47 int
     48 curs_set(int visibility)
     49 {
     50 	int old_one;
     51 
     52 	old_one = _cursesi_screen->old_mode;
     53 	switch (visibility) {
     54 		case 0: /* invisible */
     55 			if (cursor_invisible != NULL) {
     56 				__CTRACE(__CTRACE_MISC,
     57 				    "curs_set: invisible\n");
     58 				_cursesi_screen->old_mode = 0;
     59 				tputs(cursor_invisible, 0, __cputchar);
     60 				fflush(_cursesi_screen->outfd);
     61 				return old_one;
     62 			}
     63 			break;
     64 
     65 		case 1: /* normal */
     66 			if (cursor_normal != NULL) {
     67 				__CTRACE(__CTRACE_MISC, "curs_set: normal\n");
     68 				_cursesi_screen->old_mode = 1;
     69 				tputs(cursor_normal, 0, __cputchar);
     70 				fflush(_cursesi_screen->outfd);
     71 				return old_one;
     72 			}
     73 			break;
     74 
     75 		case 2: /* high visibility */
     76 			if (cursor_visible != NULL) {
     77 				__CTRACE(__CTRACE_MISC,
     78 				    "curs_set: high vis\n");
     79 				_cursesi_screen->old_mode = 2;
     80 				tputs(cursor_visible, 0, __cputchar);
     81 				fflush(_cursesi_screen->outfd);
     82 				return old_one;
     83 			}
     84 			break;
     85 
     86 		default:
     87 			break;
     88 	}
     89 
     90 	return ERR;
     91 }
     92 
     93 /*
     94  * __restore_cursor_vis --
     95  *     Restore the old cursor visibility.
     96  */
     97 void
     98 __restore_cursor_vis(void)
     99 {
    100 	curs_set(_cursesi_screen->old_mode);
    101 }
    102 
    103