xref: /illumos-gate/usr/src/lib/libcurses/screen/wattrset.c (revision fe4627ef755b7c263f91a0e6f07cdca5d7083501)
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 #include	<sys/types.h>
45 #include	"curses_inc.h"
46 
47 int
48 wattrset(WINDOW *win, chtype a)
49 {
50 	chtype temp_bkgd;
51 
52 	/* if 'a' contains color information, then if we are not on	*/
53 	/* color terminal erase color information from 'a'		*/
54 
55 	if ((a & A_COLOR) && (cur_term->_pairs_tbl == NULL))
56 		a &= ~A_COLOR;
57 
58 	/* combine 'a' with the background.  if 'a' contains color	*/
59 	/* information delete color information from the background	*/
60 
61 	temp_bkgd = (a & A_COLOR) ? (win->_bkgd & ~A_COLOR) : win->_bkgd;
62 	win->_attrs = (a | temp_bkgd) & A_ATTRIBUTES;
63 	return (1);
64 }
65