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📄 MKkeyname.awk(6.48 KB)
📄 MKlib_gen.sh(13.34 KB)
📄 MKunctrl.awk(5.76 KB)
📄 README(2.52 KB)
📄 define_key.c(3.73 KB)
📄 key_defined.c(3.61 KB)
📄 keybound.c(3.17 KB)
📄 keyok.c(4.03 KB)
📄 legacy_coding.c(3.01 KB)
📄 lib_addch.c(15.66 KB)
📄 lib_addstr.c(7.21 KB)
📄 lib_beep.c(3.54 KB)
📄 lib_bkgd.c(6.98 KB)
📄 lib_box.c(5.24 KB)
📄 lib_chgat.c(3.42 KB)
📄 lib_clear.c(2.77 KB)
📄 lib_clearok.c(2.78 KB)
📄 lib_clrbot.c(3.28 KB)
📄 lib_clreol.c(3.5 KB)
📄 lib_color.c(28.66 KB)
📄 lib_colorset.c(3.12 KB)
📄 lib_delch.c(3.1 KB)
📄 lib_delwin.c(3.61 KB)
📄 lib_dft_fgbg.c(4.27 KB)
📄 lib_driver.c(4.88 KB)
📄 lib_echo.c(3.37 KB)
📄 lib_endwin.c(3.42 KB)
📄 lib_erase.c(3.64 KB)
📄 lib_flash.c(3.53 KB)
📄 lib_freeall.c(5.58 KB)
📄 lib_getch.c(18.86 KB)
📄 lib_getstr.c(6.7 KB)
📄 lib_hline.c(3.55 KB)
📄 lib_immedok.c(2.75 KB)
📄 lib_inchstr.c(3.16 KB)
📄 lib_initscr.c(4.18 KB)
📄 lib_insch.c(5.2 KB)
📄 lib_insdel.c(3 KB)
📄 lib_insnstr.c(3.85 KB)
📄 lib_instr.c(4.2 KB)
📄 lib_isendwin.c(3.01 KB)
📄 lib_leaveok.c(2.78 KB)
📄 lib_mouse.c(52.49 KB)
📄 lib_move.c(2.97 KB)
📄 lib_mvwin.c(4.87 KB)
📄 lib_newterm.c(10.81 KB)
📄 lib_newwin.c(10.96 KB)
📄 lib_nl.c(3.53 KB)
📄 lib_overlay.c(6.42 KB)
📄 lib_pad.c(10.73 KB)
📄 lib_printw.c(4.91 KB)
📄 lib_redrawln.c(3.52 KB)
📄 lib_refresh.c(9.38 KB)
📄 lib_restart.c(4.4 KB)
📄 lib_scanw.c(4.05 KB)
📄 lib_screen.c(24.15 KB)
📄 lib_scroll.c(5.8 KB)
📄 lib_scrollok.c(2.78 KB)
📄 lib_scrreg.c(2.96 KB)
📄 lib_set_term.c(21.57 KB)
📄 lib_slk.c(7.85 KB)
📄 lib_slkatr_set.c(3.58 KB)
📄 lib_slkatrof.c(3.28 KB)
📄 lib_slkatron.c(3.29 KB)
📄 lib_slkatrset.c(3.05 KB)
📄 lib_slkattr.c(3.09 KB)
📄 lib_slkclear.c(3.52 KB)
📄 lib_slkcolor.c(3.66 KB)
📄 lib_slkinit.c(3.63 KB)
📄 lib_slklab.c(3.17 KB)
📄 lib_slkrefr.c(5.66 KB)
📄 lib_slkset.c(5.02 KB)
📄 lib_slktouch.c(3.01 KB)
📄 lib_touch.c(3.77 KB)
📄 lib_ungetch.c(3.58 KB)
📄 lib_vline.c(3.57 KB)
📄 lib_wattroff.c(3.09 KB)
📄 lib_wattron.c(3.1 KB)
📄 lib_winch.c(2.78 KB)
📄 lib_window.c(7.83 KB)
📄 nc_panel.c(2.81 KB)
📄 new_pair.c(9.92 KB)
📄 resizeterm.c(14.29 KB)
📄 safe_sprintf.c(7.86 KB)
📄 sigaction.c(3.62 KB)
📄 tries.c(4.86 KB)
📄 use_window.c(2.79 KB)
📄 version.c(2.59 KB)
📄 vsscanf.c(8.54 KB)
📄 wresize.c(8.41 KB)

Editing: lib_bkgd.c

/****************************************************************************
 * Copyright 2018-2019,2020 Thomas E. Dickey                                *
 * Copyright 1998-2014,2016 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: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995               *
 *     and: Eric S. Raymond <esr@snark.thyrsus.com>                         *
 *     and: Juergen Pfeifer                         1997                    *
 *     and: Sven Verdoolaege                        2000                    *
 *     and: Thomas E. Dickey                        1996-on                 *
 ****************************************************************************/

#include <curses.priv.h>

MODULE_ID("$Id: lib_bkgd.c,v 1.54 2020/02/02 23:34:34 tom Exp $")

/*
 * Set the window's background information.
 */
#if USE_WIDEC_SUPPORT
NCURSES_EXPORT(void)
#else
static NCURSES_INLINE void
#endif
wbkgrndset(WINDOW *win, const ARG_CH_T ch)
{
    T((T_CALLED("wbkgdset(%p,%s)"), (void *) win, _tracech_t(ch)));

if (win) {
	attr_t off = AttrOf(win->_nc_bkgd);
	attr_t on = AttrOf(CHDEREF(ch));

toggle_attr_off(WINDOW_ATTRS(win), off);
	toggle_attr_on(WINDOW_ATTRS(win), on);

#if NCURSES_EXT_COLORS
	{
	    int pair;

if ((pair = GetPair(win->_nc_bkgd)) != 0)
		SET_WINDOW_PAIR(win, 0);
	    if ((pair = GetPair(CHDEREF(ch))) != 0)
		SET_WINDOW_PAIR(win, pair);
	}
#endif

if (CharOf(CHDEREF(ch)) == L('\0')) {
	    SetChar(win->_nc_bkgd, BLANK_TEXT, AttrOf(CHDEREF(ch)));
	    if_EXT_COLORS(SetPair(win->_nc_bkgd, GetPair(CHDEREF(ch))));
	} else {
	    win->_nc_bkgd = CHDEREF(ch);
	}
#if USE_WIDEC_SUPPORT
	/*
	 * If we're compiled for wide-character support, _bkgrnd is the
	 * preferred location for the background information since it stores
	 * more than _bkgd.  Update _bkgd each time we modify _bkgrnd, so the
	 * macro getbkgd() will work.
	 */
	{
	    cchar_t wch;
	    int tmp;

memset(&wch, 0, sizeof(wch));
	    (void) wgetbkgrnd(win, &wch);
	    tmp = _nc_to_char((wint_t) CharOf(wch));

win->_bkgd = (((tmp == EOF) ? ' ' : (chtype) tmp)
			  | (AttrOf(wch) & ALL_BUT_COLOR)
			  | (chtype) ColorPair(GET_WINDOW_PAIR(win)));
	}
#endif
    }
    returnVoid;
}

NCURSES_EXPORT(void)
wbkgdset(WINDOW *win, chtype ch)
{
    NCURSES_CH_T wch;
    SetChar2(wch, ch);
    wbkgrndset(win, CHREF(wch));
}

/*
 * Set the window's background information and apply it to each cell.
 */
#if USE_WIDEC_SUPPORT
NCURSES_EXPORT(int)
#else
static NCURSES_INLINE int
#undef wbkgrnd
#endif
wbkgrnd(WINDOW *win, const ARG_CH_T ch)
{
#undef  SP_PARM
#define SP_PARM SP		/* to use Charable() */
    int code = ERR;

T((T_CALLED("wbkgd(%p,%s)"), (void *) win, _tracech_t(ch)));

if (SP == 0) {
	;
    } else if (win) {
	NCURSES_CH_T new_bkgd = CHDEREF(ch);
	NCURSES_CH_T old_bkgd;
	int y;
	NCURSES_CH_T old_char;
	attr_t old_attr;
	int old_pair;
	NCURSES_CH_T new_char;
	attr_t new_attr;
	int new_pair;

/* SVr4 trims color info if non-color terminal */
	if (!SP->_pair_limit) {
	    RemAttr(new_bkgd, A_COLOR);
	    SetPair(new_bkgd, 0);
	}

memset(&old_bkgd, 0, sizeof(old_bkgd));
	(void) wgetbkgrnd(win, &old_bkgd);

if (!memcmp(&old_bkgd, &new_bkgd, sizeof(new_bkgd))) {
	    T(("...unchanged"));
	    returnCode(OK);
	}

old_char = old_bkgd;
	RemAttr(old_char, ~A_CHARTEXT);
	old_attr = AttrOf(old_bkgd);
	old_pair = GetPair(old_bkgd);

if (!(old_attr & A_COLOR)) {
	    old_pair = 0;
	}
	T(("... old background char %s, attr %s, pair %d",
	   _tracechar(CharOf(old_char)), _traceattr(old_attr), old_pair));

new_char = new_bkgd;
	RemAttr(new_char, ~A_CHARTEXT);
	new_attr = AttrOf(new_bkgd);
	new_pair = GetPair(new_bkgd);

/* SVr4 limits background character to printable 7-bits */
	if (!Charable(new_bkgd)) {
	    new_char = old_char;
	}
	if (!(new_attr & A_COLOR)) {
	    new_pair = 0;
	}
	T(("... new background char %s, attr %s, pair %d",
	   _tracechar(CharOf(new_char)), _traceattr(new_attr), new_pair));

(void) wbkgrndset(win, CHREF(new_bkgd));

/* SVr4 updates color pair if old/new match, otherwise just attrs */
	if ((new_pair != 0) && (new_pair == old_pair)) {
	    WINDOW_ATTRS(win) = new_attr;
	    SET_WINDOW_PAIR(win, new_pair);
	} else {
	    WINDOW_ATTRS(win) = new_attr;
	}

for (y = 0; y <= win->_maxy; y++) {
	    int x;

for (x = 0; x <= win->_maxx; x++) {
		NCURSES_CH_T *cp = &(win->_line[y].text[x]);
		int tmp_pair = GetPair(*cp);
		attr_t tmp_attr = AttrOf(*cp);

if (CharEq(*cp, old_bkgd)) {
		    SetChar2(*cp, CharOf(new_char));
		}
		if (tmp_pair != 0) {
		    if (tmp_pair == old_pair) {
			SetAttr(*cp, (tmp_attr & ~old_attr) | new_attr);
			SetPair(*cp, new_pair);
		    } else {
			SetAttr(*cp,
				(tmp_attr & (~old_attr | A_COLOR))
				| (new_attr & ALL_BUT_COLOR));
		    }
		} else {
		    SetAttr(*cp, (tmp_attr & ~old_attr) | new_attr);
		    SetPair(*cp, new_pair);
		}
	    }
	}
	touchwin(win);
	_nc_synchook(win);
	code = OK;
    }
    returnCode(code);
}

NCURSES_EXPORT(int)
wbkgd(WINDOW *win, chtype ch)
{
    NCURSES_CH_T wch;
    SetChar2(wch, ch);
    return wbkgrnd(win, CHREF(wch));
}

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Editing: lib_bkgd.c

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