1 /****************************************************************************
2 * Copyright (c) 1998-2009,2010 Free Software Foundation, Inc. *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 * and: Juergen Pfeifer 1997 *
33 * and: Sven Verdoolaege 2000 *
34 * and: Thomas E. Dickey 1996-on *
35 ****************************************************************************/
37 #include <curses.priv.h>
39 MODULE_ID("$Id: lib_bkgd.c,v 1.41 2010/05/01 22:16:21 tom Exp $")
42 * Set the window's background information.
47 static NCURSES_INLINE void
49 wbkgrndset(WINDOW *win, const ARG_CH_T ch)
51 T((T_CALLED("wbkgdset(%p,%s)"), (void *) win, _tracech_t(ch)));
54 attr_t off = AttrOf(win->_nc_bkgd);
55 attr_t on = AttrOf(CHDEREF(ch));
57 toggle_attr_off(WINDOW_ATTRS(win), off);
58 toggle_attr_on(WINDOW_ATTRS(win), on);
60 #if NCURSES_EXT_COLORS
64 if ((pair = GetPair(win->_nc_bkgd)) != 0)
65 SET_WINDOW_PAIR(win, 0);
66 if ((pair = GetPair(CHDEREF(ch))) != 0)
67 SET_WINDOW_PAIR(win, pair);
71 if (CharOf(CHDEREF(ch)) == L('\0')) {
72 SetChar(win->_nc_bkgd, BLANK_TEXT, AttrOf(CHDEREF(ch)));
73 if_EXT_COLORS(SetPair(win->_nc_bkgd, GetPair(CHDEREF(ch))));
75 win->_nc_bkgd = CHDEREF(ch);
79 * If we're compiled for wide-character support, _bkgrnd is the
80 * preferred location for the background information since it stores
81 * more than _bkgd. Update _bkgd each time we modify _bkgrnd, so the
82 * macro getbkgd() will work.
88 (void) wgetbkgrnd(win, &wch);
89 tmp = _nc_to_char((wint_t) CharOf(wch));
91 win->_bkgd = (((tmp == EOF) ? ' ' : (chtype) tmp)
92 | (AttrOf(wch) & ALL_BUT_COLOR)
93 | ColorPair(GET_WINDOW_PAIR(win)));
101 wbkgdset(WINDOW *win, chtype ch)
105 wbkgrndset(win, CHREF(wch));
109 * Set the window's background information and apply it to each cell.
111 #if USE_WIDEC_SUPPORT
114 static NCURSES_INLINE int
117 wbkgrnd(WINDOW *win, const ARG_CH_T ch)
121 NCURSES_CH_T new_bkgd = CHDEREF(ch);
123 T((T_CALLED("wbkgd(%p,%s)"), (void *) win, _tracech_t(ch)));
126 NCURSES_CH_T old_bkgrnd;
127 wgetbkgrnd(win, &old_bkgrnd);
129 (void) wbkgrndset(win, CHREF(new_bkgd));
130 (void) wattrset(win, AttrOf(win->_nc_bkgd));
132 for (y = 0; y <= win->_maxy; y++) {
133 for (x = 0; x <= win->_maxx; x++) {
134 if (CharEq(win->_line[y].text[x], old_bkgrnd)) {
135 win->_line[y].text[x] = win->_nc_bkgd;
137 NCURSES_CH_T wch = win->_line[y].text[x];
138 RemAttr(wch, (~(A_ALTCHARSET | A_CHARTEXT)));
139 win->_line[y].text[x] = _nc_render(win, wch);
151 wbkgd(WINDOW *win, chtype ch)
155 return wbkgrnd(win, CHREF(wch));