xref: /illumos-gate/usr/src/lib/libcurses/screen/pechochar.c (revision 8b80e8cb6855118d46f605e91b5ed4ce83417395)
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 /*
23  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
24  * Use is subject to license terms.
25  */
26 
27 /*	Copyright (c) 1988 AT&T	*/
28 /*	  All Rights Reserved	*/
29 
30 /*
31  * University Copyright- Copyright (c) 1982, 1986, 1988
32  * The Regents of the University of California
33  * All Rights Reserved
34  *
35  * University Acknowledgment- Portions of this document are derived from
36  * software developed by the University of California, Berkeley, and its
37  * contributors.
38  */
39 
40 #pragma ident	"%Z%%M%	%I%	%E% SMI"
41 
42 /*LINTLIBRARY*/
43 
44 /*
45  *  These routines short-circuit much of the innards of curses in order to get
46  *  a single character output to the screen quickly!
47  *
48  *  pechochar(WINDOW *pad, chtype ch) is functionally equivalent to
49  *  waddch(WINDOW *pad, chtype ch), prefresh(WINDOW *pad, `the same arguments
50  *  as in the last prefresh or pnoutrefresh')
51  */
52 
53 #include	<sys/types.h>
54 #include	"curses_inc.h"
55 
56 int
57 pechochar(WINDOW *pad, chtype ch)
58 {
59 	WINDOW *padwin;
60 	int	rv;
61 
62 	/*
63 	 * If pad->_padwin exists(meaning that p*refresh have been
64 	 * previously called), call wechochar on it.  Otherwise, call
65 	 * wechochar on the pad itself
66 	 */
67 
68 	if ((padwin = pad->_padwin) != NULL) {
69 		padwin->_cury = pad->_cury - padwin->_pary;
70 		padwin->_curx = pad->_curx - padwin->_parx;
71 		rv = wechochar(padwin, ch);
72 		pad->_cury = padwin->_cury + padwin->_pary;
73 		pad->_curx = padwin->_curx + padwin->_parx;
74 		return (rv);
75 	} else
76 		return (wechochar(pad, ch));
77 }
78