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background.c revision 1.5 
      1 /*	$NetBSD: background.c,v 1.5 2000/04/18 22:44:21 jdc Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
      5  * All rights reserved.
      6  *
      7  * This code is derived from software contributed to The NetBSD Foundation
      8  * by Julian Coleman.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. All advertising materials mentioning features or use of this software
     19  *    must display the following acknowledgement:
     20  *        This product includes software developed by the NetBSD
     21  *        Foundation, Inc. and its contributors.
     22  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  *    contributors may be used to endorse or promote products derived
     24  *    from this software without specific prior written permission.
     25  *
     26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  * POSSIBILITY OF SUCH DAMAGE.
     37  */
     38 
     39 #include "curses.h"
     40 #include "curses_private.h"
     41 
     42 /*
     43  * bkgdset
     44  *	Set new background attributes on stdscr.
     45  */
     46 void
     47 bkgdset(chtype ch)
     48 {
     49 	wbkgdset(stdscr, ch);
     50 }
     51 
     52 /*
     53  * bkgd --
     54  *	Set new background and new background attributes on stdscr.
     55  */
     56 int
     57 bkgd(chtype ch)
     58 {
     59 	return(wbkgd(stdscr, ch));
     60 }
     61 
     62 /*
     63  * wbkgdset
     64  *	Set new background attributes.
     65  */
     66 void
     67 wbkgdset(WINDOW *win, chtype ch)
     68 {
     69 	if (ch & __CHARTEXT)
     70 		win->bch = (wchar_t) ch & __CHARTEXT;
     71 	win->battr = (attr_t) ch & __ATTRIBUTES;
     72 #ifdef DEBUG
     73 	__CTRACE("wbkgdset: (%0.2o), '%s', %08x\n",
     74 	    win, unctrl(win->bch), win->battr);
     75 #endif
     76 }
     77 
     78 /*
     79  * wbkgd --
     80  *	Set new background and new background attributes.
     81  */
     82 int
     83 wbkgd(WINDOW *win, chtype ch)
     84 {
     85 	int	y, x;
     86 
     87 	wbkgdset(win, ch);
     88 	for (y = 0; y < win->maxy; y++)
     89 		for (x = 0; x < win->maxx; x++) {
     90 			if (ch & A_CHARTEXT)
     91 				win->lines[y]->line[x].bch = ch & __CHARTEXT;
     92 			win->lines[y]->line[x].battr = ch & __ATTRIBUTES;
     93 		}
     94 	__touchwin(win);
     95 	return(OK);
     96 }
     97 
     98 /*
     99  * getbkgd --
    100  *	Get current background attributes.
    101  */
    102 chtype
    103 getbkgd(WINDOW *win)
    104 {
    105 	return ((chtype) ((win->bch & A_CHARTEXT) |
    106 	    (win->battr & A_ATTRIBUTES)));
    107 }
    108