1 /**************************************************************************** 2 * Copyright 2020 Thomas E. Dickey * 3 * Copyright 1998-2014,2017 Free Software Foundation, Inc. * 4 * * 5 * Permission is hereby granted, free of charge, to any person obtaining a * 6 * copy of this software and associated documentation files (the * 7 * "Software"), to deal in the Software without restriction, including * 8 * without limitation the rights to use, copy, modify, merge, publish, * 9 * distribute, distribute with modifications, sublicense, and/or sell * 10 * copies of the Software, and to permit persons to whom the Software is * 11 * furnished to do so, subject to the following conditions: * 12 * * 13 * The above copyright notice and this permission notice shall be included * 14 * in all copies or substantial portions of the Software. * 15 * * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * 17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * 18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * 19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, * 20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * 21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR * 22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. * 23 * * 24 * Except as contained in this notice, the name(s) of the above copyright * 25 * holders shall not be used in advertising or otherwise to promote the * 26 * sale, use or other dealings in this Software without prior written * 27 * authorization. * 28 ****************************************************************************/ 29 30 /**************************************************************************** 31 * Author: Thomas E. Dickey 1998-on * 32 * Juergen Pfeifer 2009 * 33 ****************************************************************************/ 34 35 #include <curses.priv.h> 36 37 #ifndef CUR 38 #define CUR SP_TERMTYPE 39 #endif 40 41 MODULE_ID("$Id: lib_dft_fgbg.c,v 1.30 2020/02/02 23:34:34 tom Exp $") 42 43 /* 44 * Modify the behavior of color-pair 0 so that the library doesn't assume that 45 * it is white on black. This is an extension to XSI curses. 46 */ 47 NCURSES_EXPORT(int) 48 NCURSES_SP_NAME(use_default_colors) (NCURSES_SP_DCL0) 49 { 50 T((T_CALLED("use_default_colors(%p)"), (void *) SP_PARM)); 51 returnCode(NCURSES_SP_NAME(assume_default_colors) (NCURSES_SP_ARGx -1, -1)); 52 } 53 54 #if NCURSES_SP_FUNCS 55 NCURSES_EXPORT(int) 56 use_default_colors(void) 57 { 58 return NCURSES_SP_NAME(use_default_colors) (CURRENT_SCREEN); 59 } 60 #endif 61 62 /* 63 * Modify the behavior of color-pair 0 so that the library assumes that it 64 * is something specific, possibly not white on black. 65 */ 66 NCURSES_EXPORT(int) 67 NCURSES_SP_NAME(assume_default_colors) (NCURSES_SP_DCLx int fg, int bg) 68 { 69 int code = ERR; 70 71 T((T_CALLED("assume_default_colors(%p,%d,%d)"), (void *) SP_PARM, fg, bg)); 72 if (SP_PARM != 0) { 73 #ifdef USE_TERM_DRIVER 74 code = CallDriver_2(SP_PARM, td_defaultcolors, fg, bg); 75 #else 76 if ((orig_pair || orig_colors) && !initialize_pair) { 77 78 SP_PARM->_default_color = isDefaultColor(fg) || isDefaultColor(bg); 79 SP_PARM->_has_sgr_39_49 = (tigetflag("AX") == TRUE); 80 SP_PARM->_default_fg = isDefaultColor(fg) ? COLOR_DEFAULT : fg; 81 SP_PARM->_default_bg = isDefaultColor(bg) ? COLOR_DEFAULT : bg; 82 if (SP_PARM->_color_pairs != 0) { 83 bool save = SP_PARM->_default_color; 84 SP_PARM->_assumed_color = TRUE; 85 SP_PARM->_default_color = TRUE; 86 init_pair(0, (short) fg, (short) bg); 87 SP_PARM->_default_color = save; 88 } 89 code = OK; 90 } 91 #endif 92 } 93 returnCode(code); 94 } 95 96 #if NCURSES_SP_FUNCS 97 NCURSES_EXPORT(int) 98 assume_default_colors(int fg, int bg) 99 { 100 return NCURSES_SP_NAME(assume_default_colors) (CURRENT_SCREEN, fg, bg); 101 } 102 #endif 103