/*
 * |-----------------------------------------------------------|
 * | Copyright (c) 1991, 1990 MIPS Computer Systems, Inc.      |
 * | All Rights Reserved                                       |
 * |-----------------------------------------------------------|
 * |          Restricted Rights Legend                         |
 * | Use, duplication, or disclosure by the Government is      |
 * | subject to restrictions as set forth in                   |
 * | subparagraph (c)(1)(ii) of the Rights in Technical        |
 * | Data and Computer Software Clause of DFARS 252.227-7013.  |
 * |         MIPS Computer Systems, Inc.                       |
 * |         950 DeGuigne Avenue                               |
 * |         Sunnyvale, California 94088-3650, USA             |
 * |-----------------------------------------------------------|
 */
#ident	"$Header: wattroff.c,v 1.4.2.1 92/06/24 14:07:26 marker Exp $"
/*	Copyright (c) 1984 AT&T	*/
/*	  All Rights Reserved  	*/

/*	THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T	*/
/*	The copyright notice above does not evidence any   	*/
/*	actual or intended publication of such source code.	*/

#include	"curses_inc.h"

wattroff(win,a)
WINDOW	*win;
chtype	a;
{
    /* if attribute contains color information, but this is not a color    */
    /* terminal, or that color information doesn't match the one stored	   */
    /* inside _attrs,  ignore that information.				   */

    if (((a & A_COLOR) && (SP->_pairs_tbl == NULL)) ||
        ((a & A_COLOR) != (win->_attrs & A_COLOR)))
	 a &= ~A_COLOR;

    if ((a & A_ATTRIBUTES) == A_NORMAL)
	 return (1);

    /* turn off the attributes		*/

    win->_attrs &= ~a & A_ATTRIBUTES;

    /* if background contains color information different from the one */
    /* we have just turned off, turn that color on.  (Reason: the      */
    /* color we have just turned off was set by wattron(), so the back-*/
    /* ground color was blocked.  However, now the background color can*/
    /* be seen.							       */

    if ((a & A_COLOR) && ((a & A_COLOR) != (win->_bkgd & A_COLOR)))
	 win->_attrs |= (win->_bkgd & A_COLOR);

    return (1);
}
