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) 1995-1998 by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27 /* LINTLIBRARY */
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
40 static char rcsID[] =
41 "$Header: /team/ps/sun_xcurses/archive/local_changes/xcurses/src/lib/"
42 "libxcurses/src/libc/xcurses/rcs/wbkgrnd.c 1.11 1998/05/29 14:48:51 "
43 "cbates Exp $";
44 #endif
45 #endif
46
47 #include <private.h>
48
49 /*
50 * Combine the new background setting with every position in the window.
51 * The background is any combination of attributes and a character.
52 * Only the attribute part is used to set the background of non-blank
53 * characters, while both character and attributes are used for blank
54 * positions.
55 */
56 int
wbkgrnd(WINDOW * w,const cchar_t * bg)57 wbkgrnd(WINDOW *w, const cchar_t *bg)
58 {
59 short y, x;
60 short acolor;
61 cchar_t old_bg, *cp;
62
63 old_bg = w->_bg;
64 w->_bg = *bg;
65 w->_fg._at = (w->_fg._at & ~old_bg._at) | bg->_at;
66
67 if ((acolor = w->_fg._co) != 0) {
68 if (acolor == old_bg._co) {
69 w->_fg._co = bg->_co;
70 }
71 } else {
72 w->_fg._co = bg->_co;
73 }
74
75 for (y = 0; y < w->_maxy; ++y) {
76 for (cp = w->_line[y], x = 0; x < w->_maxx; ++x, ++cp) {
77 int _at = cp->_at;
78
79 old_bg._f = cp->_f;
80 acolor = cp->_co;
81 if (__m_cc_equal(cp, &old_bg)) {
82 *cp = *bg;
83 }
84 if (acolor != 0) {
85 if (acolor == old_bg._co) {
86 cp->_co = bg->_co;
87 } else {
88 cp->_co = acolor;
89 }
90 } else {
91 cp->_co = bg->_co;
92 }
93 cp->_at = (_at & ~old_bg._at) | bg->_at;
94 }
95
96 /* Mark line as touched. */
97 w->_first[y] = 0;
98 w->_last[y] = x;
99 }
100
101 WSYNC(w);
102
103 return (WFLUSH(w));
104 }
105