1/****************************************************************************
2 * Copyright (c) 1998-2009,2011 Free Software Foundation, Inc.              *
3 *                                                                          *
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14 *                                                                          *
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22 *                                                                          *
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28
29/****************************************************************************
30 *  Author: Thomas E. Dickey          1998-on                               *
31 *          Juergen Pfeifer           2009                                  *
32 ****************************************************************************/
33
34#include <curses.priv.h>
35
36#ifndef CUR
37#define CUR SP_TERMTYPE
38#endif
39
40MODULE_ID("$Id: lib_dft_fgbg.c,v 1.26 2011/04/23 18:28:18 tom Exp $")
41
42/*
43 * Modify the behavior of color-pair 0 so that the library doesn't assume that
44 * it is white on black.  This is an extension to XSI curses.
45 */
46NCURSES_EXPORT(int)
47NCURSES_SP_NAME(use_default_colors) (NCURSES_SP_DCL0)
48{
49    T((T_CALLED("use_default_colors(%p)"), (void *) SP_PARM));
50    returnCode(NCURSES_SP_NAME(assume_default_colors) (NCURSES_SP_ARGx -1, -1));
51}
52
53#if NCURSES_SP_FUNCS
54NCURSES_EXPORT(int)
55use_default_colors(void)
56{
57    return NCURSES_SP_NAME(use_default_colors) (CURRENT_SCREEN);
58}
59#endif
60
61/*
62 * Modify the behavior of color-pair 0 so that the library assumes that it
63 * is something specific, possibly not white on black.
64 */
65NCURSES_EXPORT(int)
66NCURSES_SP_NAME(assume_default_colors) (NCURSES_SP_DCLx int fg, int bg)
67{
68    int code = ERR;
69
70    T((T_CALLED("assume_default_colors(%p,%d,%d)"), (void *) SP_PARM, fg, bg));
71#ifdef USE_TERM_DRIVER
72    if (sp != 0)
73	code = CallDriver_2(sp, defaultcolors, fg, bg);
74#else
75    if ((orig_pair || orig_colors) && !initialize_pair) {
76
77	SP_PARM->_default_color = isDefaultColor(fg) || isDefaultColor(bg);
78	SP_PARM->_has_sgr_39_49 = (tigetflag("AX") == TRUE);
79	SP_PARM->_default_fg = isDefaultColor(fg) ? COLOR_DEFAULT : (fg & C_MASK);
80	SP_PARM->_default_bg = isDefaultColor(bg) ? COLOR_DEFAULT : (bg & C_MASK);
81	if (SP_PARM->_color_pairs != 0) {
82	    bool save = SP_PARM->_default_color;
83	    SP_PARM->_assumed_color = TRUE;
84	    SP_PARM->_default_color = TRUE;
85	    init_pair(0, (short) fg, (short) bg);
86	    SP_PARM->_default_color = save;
87	}
88	code = OK;
89    }
90#endif
91    returnCode(code);
92}
93
94#if NCURSES_SP_FUNCS
95NCURSES_EXPORT(int)
96assume_default_colors(int fg, int bg)
97{
98    return NCURSES_SP_NAME(assume_default_colors) (CURRENT_SCREEN, fg, bg);
99}
100#endif
101