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 (c) 1995, by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27#pragma ident	"%Z%%M%	%I%	%E% SMI"
28
29/*
30 * wbkgrnd.c
31 *
32 * XCurses Library
33 *
34 * Copyright 1990, 1995 by Mortice Kern Systems Inc.  All rights reserved.
35 *
36 */
37
38#ifdef M_RCSID
39#ifndef lint
40static char rcsID[] = "$Header: /rd/src/libc/xcurses/rcs/wbkgrnd.c 1.4 1995/06/21 20:30:57 ant Exp $";
41#endif
42#endif
43
44#include <private.h>
45#include <string.h>
46
47/*f
48 * Combine the new background setting with every position in the window.
49 * The background is any combination of attributes and a character.
50 * Only the attribute part is used to set the background of non-blank
51 * characters, while both character and attributes are used for blank
52 * positions.
53 */
54int
55wbkgrnd(w, bg)
56WINDOW *w;
57const cchar_t *bg;
58{
59	short y, x;
60	cchar_t old_bg, *cp;
61
62#ifdef M_CURSES_TRACE
63	__m_trace("wbkgrnd(%p, %p)", w, bg);
64#endif
65
66	old_bg = w->_bg;
67	w->_bg = *bg;
68
69	for (y = 0; y < w->_maxy; ++y) {
70		for (cp = w->_line[y], x = 0; x < w->_maxx; ++x) {
71			old_bg._f = cp->_f;
72			if (__m_cc_compare(cp, &w->_bg, 0)) {
73				/* Replace entire background character. */
74				*cp = *bg;
75			} else {
76				/* Disable old background attributes. */
77				cp->_at &= ~old_bg._at;
78
79				/* Enable new background and current
80				 * foreground.  The foreground is included
81				 * in case there was overlap with the old
82				 * background and the foreground.
83				 */
84				cp->_at |= bg->_at | w->_fg._at;
85			}
86		}
87
88		/* Mark line as touched. */
89		w->_first[y] = 0;
90		w->_last[y] = x;
91	}
92
93	WSYNC(w);
94
95	return __m_return_code("wbkgrnd", WFLUSH(w));
96}
97