xref: /illumos-gate/usr/src/lib/libcurses/screen/pechochar.c (revision 201ceb75ab95f9bf1f42ea1dc9ab363b43ba47cf)
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 /*LINTLIBRARY*/
41 
42 /*
43  *  These routines short-circuit much of the innards of curses in order to get
44  *  a single character output to the screen quickly!
45  *
46  *  pechochar(WINDOW *pad, chtype ch) is functionally equivalent to
47  *  waddch(WINDOW *pad, chtype ch), prefresh(WINDOW *pad, `the same arguments
48  *  as in the last prefresh or pnoutrefresh')
49  */
50 
51 #include	<sys/types.h>
52 #include	"curses_inc.h"
53 
54 int
55 pechochar(WINDOW *pad, chtype ch)
56 {
57 	WINDOW *padwin;
58 	int	rv;
59 
60 	/*
61 	 * If pad->_padwin exists(meaning that p*refresh have been
62 	 * previously called), call wechochar on it.  Otherwise, call
63 	 * wechochar on the pad itself
64 	 */
65 
66 	if ((padwin = pad->_padwin) != NULL) {
67 		padwin->_cury = pad->_cury - padwin->_pary;
68 		padwin->_curx = pad->_curx - padwin->_parx;
69 		rv = wechochar(padwin, ch);
70 		pad->_cury = padwin->_cury + padwin->_pary;
71 		pad->_curx = padwin->_curx + padwin->_parx;
72 		return (rv);
73 	} else
74 		return (wechochar(pad, ch));
75 }
76