1 /**************************************************************************** 2 * Copyright (c) 1998,2000,2001 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 ****************************************************************************/ 33 34 #include <curses.priv.h> 35 36 MODULE_ID("$Id: lib_bkgd.c,v 1.26 2001/12/19 01:36:58 tom Exp $") 37 38 /* 39 * Set the window's background information. 40 */ 41 #if USE_WIDEC_SUPPORT 42 NCURSES_EXPORT(void) 43 #else 44 static inline void 45 #endif 46 wbkgrndset(WINDOW *win, const ARG_CH_T ch) 47 { 48 T((T_CALLED("wbkgdset(%p,%s)"), win, _tracech_t(ch))); 49 50 if (win) { 51 attr_t off = AttrOf(win->_nc_bkgd); 52 attr_t on = AttrOf(CHDEREF(ch)); 53 54 toggle_attr_off(win->_attrs, off); 55 toggle_attr_on(win->_attrs, on); 56 57 if (CharOf(CHDEREF(ch)) == L('\0')) 58 SetChar(win->_nc_bkgd, BLANK_TEXT, AttrOf(CHDEREF(ch))); 59 else 60 win->_nc_bkgd = CHDEREF(ch); 61 #if USE_WIDEC_SUPPORT 62 /* 63 * If we're compiled for wide-character support, _bkgrnd is the 64 * preferred location for the background information since it stores 65 * more than _bkgd. Update _bkgd each time we modify _bkgrnd, so the 66 * macro getbkgd() will work. 67 */ 68 { 69 cchar_t wch; 70 int tmp; 71 72 wgetbkgrnd(win, &wch); 73 tmp = wctob(CharOf(wch)); 74 75 win->_bkgd = ((tmp == EOF) ? ' ' : (chtype) tmp) | AttrOf(wch); 76 } 77 #endif 78 } 79 returnVoid; 80 } 81 82 NCURSES_EXPORT(void) 83 wbkgdset(WINDOW *win, chtype ch) 84 { 85 NCURSES_CH_T wch; 86 SetChar2(wch, ch); 87 wbkgrndset(win, CHREF(wch)); 88 } 89 90 /* 91 * Set the window's background information and apply it to each cell. 92 */ 93 #if USE_WIDEC_SUPPORT 94 NCURSES_EXPORT(int) 95 #else 96 static inline int 97 #undef wbkgrnd 98 #endif 99 wbkgrnd(WINDOW *win, const ARG_CH_T ch) 100 { 101 int code = ERR; 102 int x, y; 103 NCURSES_CH_T new_bkgd = CHDEREF(ch); 104 105 T((T_CALLED("wbkgd(%p,%s)"), win, _tracech_t(ch))); 106 107 if (win) { 108 NCURSES_CH_T old_bkgrnd; 109 wgetbkgrnd(win, &old_bkgrnd); 110 111 wbkgrndset(win, CHREF(new_bkgd)); 112 wattrset(win, AttrOf(win->_nc_bkgd)); 113 114 for (y = 0; y <= win->_maxy; y++) { 115 for (x = 0; x <= win->_maxx; x++) { 116 if (CharEq(win->_line[y].text[x], old_bkgrnd)) 117 win->_line[y].text[x] = win->_nc_bkgd; 118 else { 119 NCURSES_CH_T wch = win->_line[y].text[x]; 120 RemAttr(wch, ~A_ALTCHARSET); 121 win->_line[y].text[x] = _nc_render(win, wch); 122 } 123 } 124 } 125 touchwin(win); 126 _nc_synchook(win); 127 code = OK; 128 } 129 returnCode(code); 130 } 131 132 NCURSES_EXPORT(int) 133 wbkgd(WINDOW *win, const chtype ch) 134 { 135 NCURSES_CH_T wch; 136 SetChar2(wch, ch); 137 return wbkgrnd(win, CHREF(wch)); 138 } 139