xref: /illumos-gate/usr/src/lib/libcurses/screen/pechowchar.c (revision f37b3cbb6f67aaea5eec1c335bdc7bf432867d64)
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 /*  Copyright (c) 1988 AT&T */
23 /*    All Rights Reserved   */
24 
25 
26 /*
27  *      Copyright (c) 1997, by Sun Microsystems, Inc.
28  *      All rights reserved.
29  */
30 
31 /*LINTLIBRARY*/
32 
33 /*
34  *  These routines short-circuit much of the innards of curses in order to get
35  *  a single character output to the screen quickly!
36  *
37  *  pechochar(WINDOW *pad, chtype ch) is functionally equivalent to
38  *  waddch(WINDOW *pad, chtype ch), prefresh(WINDOW *pad, `the same arguments
39  *  as in the last prefresh or pnoutrefresh')
40  */
41 
42 #include	<sys/types.h>
43 #include	"curses_inc.h"
44 
45 int
46 pechowchar(WINDOW *pad, chtype ch)
47 {
48 	WINDOW *padwin;
49 	int	rv;
50 
51 	/*
52 	 * If pad->_padwin exists(meaning that p*refresh have been
53 	 * previously called), call wechochar on it.  Otherwise, call
54 	 * wechochar on the pad itself
55 	 */
56 
57 	if ((padwin = pad->_padwin) != NULL) {
58 		padwin->_cury = pad->_cury - padwin->_pary;
59 		padwin->_curx = pad->_curx - padwin->_parx;
60 		rv = wechowchar(padwin, ch);
61 		pad->_cury = padwin->_cury + padwin->_pary;
62 		pad->_curx = padwin->_curx + padwin->_parx;
63 		return (rv);
64 	} else
65 	return (wechowchar(pad, ch));
66 }
67