1 /* $OpenBSD: lib_bkgd.c,v 1.3 2010/01/12 23:22:05 nicm Exp $ */ 2 3 /**************************************************************************** 4 * Copyright (c) 1998-2006,2008 Free Software Foundation, Inc. * 5 * * 6 * Permission is hereby granted, free of charge, to any person obtaining a * 7 * copy of this software and associated documentation files (the * 8 * "Software"), to deal in the Software without restriction, including * 9 * without limitation the rights to use, copy, modify, merge, publish, * 10 * distribute, distribute with modifications, sublicense, and/or sell * 11 * copies of the Software, and to permit persons to whom the Software is * 12 * furnished to do so, subject to the following conditions: * 13 * * 14 * The above copyright notice and this permission notice shall be included * 15 * in all copies or substantial portions of the Software. * 16 * * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 20 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 21 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 22 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 23 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 24 * * 25 * Except as contained in this notice, the name(s) of the above copyright * 26 * holders shall not be used in advertising or otherwise to promote the * 27 * sale, use or other dealings in this Software without prior written * 28 * authorization. * 29 ****************************************************************************/ 30 31 /**************************************************************************** 32 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * 33 * and: Eric S. Raymond <esr@snark.thyrsus.com> * 34 * and: Juergen Pfeifer 1997 * 35 * and: Sven Verdoolaege 2000 * 36 * and: Thomas E. Dickey 1996-on * 37 ****************************************************************************/ 38 39 #include <curses.priv.h> 40 41 MODULE_ID("$Id: lib_bkgd.c,v 1.3 2010/01/12 23:22:05 nicm Exp $") 42 43 /* 44 * Set the window's background information. 45 */ 46 #if USE_WIDEC_SUPPORT 47 NCURSES_EXPORT(void) 48 #else 49 static NCURSES_INLINE void 50 #endif 51 wbkgrndset(WINDOW *win, const ARG_CH_T ch) 52 { 53 T((T_CALLED("wbkgdset(%p,%s)"), win, _tracech_t(ch))); 54 55 if (win) { 56 attr_t off = AttrOf(win->_nc_bkgd); 57 attr_t on = AttrOf(CHDEREF(ch)); 58 59 toggle_attr_off(WINDOW_ATTRS(win), off); 60 toggle_attr_on(WINDOW_ATTRS(win), on); 61 62 #if NCURSES_EXT_COLORS 63 { 64 int pair; 65 66 if ((pair = GetPair(win->_nc_bkgd)) != 0) 67 SET_WINDOW_PAIR(win, 0); 68 if ((pair = GetPair(CHDEREF(ch))) != 0) 69 SET_WINDOW_PAIR(win, pair); 70 } 71 #endif 72 73 if (CharOf(CHDEREF(ch)) == L('\0')) { 74 SetChar(win->_nc_bkgd, BLANK_TEXT, AttrOf(CHDEREF(ch))); 75 if_EXT_COLORS(SetPair(win->_nc_bkgd, GetPair(CHDEREF(ch)))); 76 } else { 77 win->_nc_bkgd = CHDEREF(ch); 78 } 79 #if USE_WIDEC_SUPPORT 80 /* 81 * If we're compiled for wide-character support, _bkgrnd is the 82 * preferred location for the background information since it stores 83 * more than _bkgd. Update _bkgd each time we modify _bkgrnd, so the 84 * macro getbkgd() will work. 85 */ 86 { 87 cchar_t wch; 88 int tmp; 89 90 wgetbkgrnd(win, &wch); 91 tmp = _nc_to_char((wint_t) CharOf(wch)); 92 93 win->_bkgd = (((tmp == EOF) ? ' ' : (chtype) tmp) 94 | (AttrOf(wch) & ALL_BUT_COLOR) 95 | COLOR_PAIR(GET_WINDOW_PAIR(win))); 96 } 97 #endif 98 } 99 returnVoid; 100 } 101 102 NCURSES_EXPORT(void) 103 wbkgdset(WINDOW *win, chtype ch) 104 { 105 NCURSES_CH_T wch; 106 SetChar2(wch, ch); 107 wbkgrndset(win, CHREF(wch)); 108 } 109 110 /* 111 * Set the window's background information and apply it to each cell. 112 */ 113 #if USE_WIDEC_SUPPORT 114 NCURSES_EXPORT(int) 115 #else 116 static NCURSES_INLINE int 117 #undef wbkgrnd 118 #endif 119 wbkgrnd(WINDOW *win, const ARG_CH_T ch) 120 { 121 int code = ERR; 122 int x, y; 123 NCURSES_CH_T new_bkgd = CHDEREF(ch); 124 125 T((T_CALLED("wbkgd(%p,%s)"), win, _tracech_t(ch))); 126 127 if (win) { 128 NCURSES_CH_T old_bkgrnd; 129 wgetbkgrnd(win, &old_bkgrnd); 130 131 wbkgrndset(win, CHREF(new_bkgd)); 132 wattrset(win, AttrOf(win->_nc_bkgd)); 133 134 for (y = 0; y <= win->_maxy; y++) { 135 for (x = 0; x <= win->_maxx; x++) { 136 if (CharEq(win->_line[y].text[x], old_bkgrnd)) { 137 win->_line[y].text[x] = win->_nc_bkgd; 138 } else { 139 NCURSES_CH_T wch = win->_line[y].text[x]; 140 RemAttr(wch, (~(A_ALTCHARSET | A_CHARTEXT))); 141 win->_line[y].text[x] = _nc_render(win, wch); 142 } 143 } 144 } 145 touchwin(win); 146 _nc_synchook(win); 147 code = OK; 148 } 149 returnCode(code); 150 } 151 152 NCURSES_EXPORT(int) 153 wbkgd(WINDOW *win, chtype ch) 154 { 155 NCURSES_CH_T wch; 156 SetChar2(wch, ch); 157 return wbkgrnd(win, CHREF(wch)); 158 } 159