NetBSD/lib/libcurses/underscore.c

107 lines
3.0 KiB
C

/* $NetBSD: underscore.c,v 1.6 2000/12/19 21:34:24 jdc Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
* All rights reserved.
*
* This code is derived from software contributed to The NetBSD Foundation
* by Julian Coleman.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
#ifndef lint
__RCSID("$NetBSD: underscore.c,v 1.6 2000/12/19 21:34:24 jdc Exp $");
#endif /* not lint */
#include "curses.h"
#include "curses_private.h"
#ifndef _CURSES_USE_MACROS
/*
* underscore
* Enter underscore mode on stdscr.
*/
int
underscore(void)
{
return wunderscore(stdscr);
}
/*
* underend --
* Exit underscore mode on stdscr.
*/
int
underend(void)
{
return wunderend(stdscr);
}
#endif
/*
* wunderscore
* Enter underscore mode.
*/
int
wunderscore(WINDOW *win)
{
/* If can underscore, set the screen underscore bit. */
if ((__tc_us != NULL && __tc_ue != NULL) || __tc_uc != NULL) {
#ifdef DEBUG
__CTRACE("wunderscore\n");
#endif
win->wattr |= __UNDERSCORE;
if ((win->wattr & __COLOR) && (__nca & __UNDERSCORE)) {
win->wattr &= ~__COLOR;
}
}
return (1);
}
/*
* wunderend --
* Exit underscore mode.
*/
int
wunderend(WINDOW *win)
{
if (__tc_ue != NULL) {
#ifdef DEBUG
__CTRACE("wunderuend\n");
#endif
win->wattr &= ~__UNDERSCORE;
}
return 1;
}