1 /**************************************************************************** 2 * Copyright (c) 1998-2012,2014 Free Software Foundation, Inc. * 3 * * 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: * 11 * * 12 * The above copyright notice and this permission notice shall be included * 13 * in all copies or substantial portions of the Software. * 14 * * 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. * 22 * * 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 * 26 * authorization. * 27 ****************************************************************************/ 28 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 ****************************************************************************/ 36 37 #include <curses.priv.h> 38 39 MODULE_ID("$Id: lib_bkgd.c,v 1.49 2014/09/04 09:36:20 tom Exp $") 40 41 /* 42 * Set the window's background information. 43 */ 44 #if USE_WIDEC_SUPPORT 45 NCURSES_EXPORT(void) 46 #else 47 static NCURSES_INLINE void 48 #endif 49 wbkgrndset(WINDOW *win, const ARG_CH_T ch) 50 { 51 T((T_CALLED("wbkgdset(%p,%s)"), (void *) win, _tracech_t(ch))); 52 53 if (win) { 54 attr_t off = AttrOf(win->_nc_bkgd); 55 attr_t on = AttrOf(CHDEREF(ch)); 56 57 toggle_attr_off(WINDOW_ATTRS(win), off); 58 toggle_attr_on(WINDOW_ATTRS(win), on); 59 60 #if NCURSES_EXT_COLORS 61 { 62 int pair; 63 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); 68 } 69 #endif 70 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)))); 74 } else { 75 win->_nc_bkgd = CHDEREF(ch); 76 } 77 #if USE_WIDEC_SUPPORT 78 /* 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. 83 */ 84 { 85 cchar_t wch; 86 int tmp; 87 88 memset(&wch, 0, sizeof(wch)); 89 (void) wgetbkgrnd(win, &wch); 90 tmp = _nc_to_char((wint_t) CharOf(wch)); 91 92 win->_bkgd = (((tmp == EOF) ? ' ' : (chtype) tmp) 93 | (AttrOf(wch) & ALL_BUT_COLOR) 94 | (chtype) ColorPair(GET_WINDOW_PAIR(win))); 95 } 96 #endif 97 } 98 returnVoid; 99 } 100 101 NCURSES_EXPORT(void) 102 wbkgdset(WINDOW *win, chtype ch) 103 { 104 NCURSES_CH_T wch; 105 SetChar2(wch, ch); 106 wbkgrndset(win, CHREF(wch)); 107 } 108 109 /* 110 * Set the window's background information and apply it to each cell. 111 */ 112 #if USE_WIDEC_SUPPORT 113 NCURSES_EXPORT(int) 114 #else 115 static NCURSES_INLINE int 116 #undef wbkgrnd 117 #endif 118 wbkgrnd(WINDOW *win, const ARG_CH_T ch) 119 { 120 int code = ERR; 121 int x, y; 122 123 T((T_CALLED("wbkgd(%p,%s)"), (void *) win, _tracech_t(ch))); 124 125 if (win) { 126 NCURSES_CH_T new_bkgd = CHDEREF(ch); 127 NCURSES_CH_T old_bkgrnd; 128 129 memset(&old_bkgrnd, 0, sizeof(old_bkgrnd)); 130 (void) wgetbkgrnd(win, &old_bkgrnd); 131 132 (void) wbkgrndset(win, CHREF(new_bkgd)); 133 (void) wattrset(win, (int) AttrOf(win->_nc_bkgd)); 134 135 for (y = 0; y <= win->_maxy; y++) { 136 for (x = 0; x <= win->_maxx; x++) { 137 if (CharEq(win->_line[y].text[x], old_bkgrnd)) { 138 win->_line[y].text[x] = win->_nc_bkgd; 139 } else { 140 NCURSES_CH_T wch = win->_line[y].text[x]; 141 RemAttr(wch, (~(A_ALTCHARSET | A_CHARTEXT))); 142 win->_line[y].text[x] = _nc_render(win, wch); 143 } 144 } 145 } 146 touchwin(win); 147 _nc_synchook(win); 148 code = OK; 149 } 150 returnCode(code); 151 } 152 153 NCURSES_EXPORT(int) 154 wbkgd(WINDOW *win, chtype ch) 155 { 156 NCURSES_CH_T wch; 157 SetChar2(wch, ch); 158 return wbkgrnd(win, CHREF(wch)); 159 } 160