1 /****************************************************************************
2 * Copyright 2020,2021 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 1.31 2021/04/03 22:27:18 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 */
NCURSES_EXPORT(int)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)
use_default_colors(void)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)
NCURSES_SP_NAME(assume_default_colors)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 NCURSES_SP_NAME(init_pair) (NCURSES_SP_ARGx 0,
87 (short)fg,
88 (short)bg);
89 SP_PARM->_default_color = save;
90 }
91 code = OK;
92 }
93 #endif
94 }
95 returnCode(code);
96 }
97
98 #if NCURSES_SP_FUNCS
99 NCURSES_EXPORT(int)
assume_default_colors(int fg,int bg)100 assume_default_colors(int fg, int bg)
101 {
102 return NCURSES_SP_NAME(assume_default_colors) (CURRENT_SCREEN, fg, bg);
103 }
104 #endif
105