ncursesw-morphos/ncurses/base/lib_dft_fgbg.c
Thomas E. Dickey 950eed9ace ncurses 5.9 - patch 20110423
+ add check in test/configure for use_window, use_screen.
+ add configure-checks for getopt's variables, which may be declared
  as different types on some Unix systems.
+ add check in test/configure for some legacy curses types of the
  function pointer passed to tputs().
+ modify init_pair() to accept -1's for color value after
  assume_default_colors() has been called (Debian #337905).
+ modify test/background.c, adding commmand-line options to demonstrate
  assume_default_colors() and use_default_colors().
2011-04-24 00:53:45 +00:00

101 lines
4.2 KiB
C

/****************************************************************************
* Copyright (c) 1998-2009,2011 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
* "Software"), to deal in the Software without restriction, including *
* without limitation the rights to use, copy, modify, merge, publish, *
* distribute, distribute with modifications, sublicense, and/or sell *
* copies of the Software, and to permit persons to whom the Software is *
* furnished to do so, subject to the following conditions: *
* *
* The above copyright notice and this permission notice shall be included *
* in all copies or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
* *
* Except as contained in this notice, the name(s) of the above copyright *
* holders shall not be used in advertising or otherwise to promote the *
* sale, use or other dealings in this Software without prior written *
* authorization. *
****************************************************************************/
/****************************************************************************
* Author: Thomas E. Dickey 1998-on *
* Juergen Pfeifer 2009 *
****************************************************************************/
#include <curses.priv.h>
#ifndef CUR
#define CUR SP_TERMTYPE
#endif
MODULE_ID("$Id: lib_dft_fgbg.c,v 1.26 2011/04/23 18:28:18 tom Exp $")
/*
* Modify the behavior of color-pair 0 so that the library doesn't assume that
* it is white on black. This is an extension to XSI curses.
*/
NCURSES_EXPORT(int)
NCURSES_SP_NAME(use_default_colors) (NCURSES_SP_DCL0)
{
T((T_CALLED("use_default_colors(%p)"), (void *) SP_PARM));
returnCode(NCURSES_SP_NAME(assume_default_colors) (NCURSES_SP_ARGx -1, -1));
}
#if NCURSES_SP_FUNCS
NCURSES_EXPORT(int)
use_default_colors(void)
{
return NCURSES_SP_NAME(use_default_colors) (CURRENT_SCREEN);
}
#endif
/*
* Modify the behavior of color-pair 0 so that the library assumes that it
* is something specific, possibly not white on black.
*/
NCURSES_EXPORT(int)
NCURSES_SP_NAME(assume_default_colors) (NCURSES_SP_DCLx int fg, int bg)
{
int code = ERR;
T((T_CALLED("assume_default_colors(%p,%d,%d)"), (void *) SP_PARM, fg, bg));
#ifdef USE_TERM_DRIVER
if (sp != 0)
code = CallDriver_2(sp, defaultcolors, fg, bg);
#else
if ((orig_pair || orig_colors) && !initialize_pair) {
SP_PARM->_default_color = isDefaultColor(fg) || isDefaultColor(bg);
SP_PARM->_has_sgr_39_49 = (tigetflag("AX") == TRUE);
SP_PARM->_default_fg = isDefaultColor(fg) ? COLOR_DEFAULT : (fg & C_MASK);
SP_PARM->_default_bg = isDefaultColor(bg) ? COLOR_DEFAULT : (bg & C_MASK);
if (SP_PARM->_color_pairs != 0) {
bool save = SP_PARM->_default_color;
SP_PARM->_assumed_color = TRUE;
SP_PARM->_default_color = TRUE;
init_pair(0, (short) fg, (short) bg);
SP_PARM->_default_color = save;
}
code = OK;
}
#endif
returnCode(code);
}
#if NCURSES_SP_FUNCS
NCURSES_EXPORT(int)
assume_default_colors(int fg, int bg)
{
return NCURSES_SP_NAME(assume_default_colors) (CURRENT_SCREEN, fg, bg);
}
#endif