xref: /onnv-gate/usr/src/lib/libcurses/screen/wclrtobot.c (revision 0:68f95e015346)
1*0Sstevel@tonic-gate /*
2*0Sstevel@tonic-gate  * CDDL HEADER START
3*0Sstevel@tonic-gate  *
4*0Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*0Sstevel@tonic-gate  * Common Development and Distribution License, Version 1.0 only
6*0Sstevel@tonic-gate  * (the "License").  You may not use this file except in compliance
7*0Sstevel@tonic-gate  * with the License.
8*0Sstevel@tonic-gate  *
9*0Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10*0Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
11*0Sstevel@tonic-gate  * See the License for the specific language governing permissions
12*0Sstevel@tonic-gate  * and limitations under the License.
13*0Sstevel@tonic-gate  *
14*0Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
15*0Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16*0Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
17*0Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
18*0Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
19*0Sstevel@tonic-gate  *
20*0Sstevel@tonic-gate  * CDDL HEADER END
21*0Sstevel@tonic-gate  */
22*0Sstevel@tonic-gate /*
23*0Sstevel@tonic-gate  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
24*0Sstevel@tonic-gate  * Use is subject to license terms.
25*0Sstevel@tonic-gate  */
26*0Sstevel@tonic-gate 
27*0Sstevel@tonic-gate /*	Copyright (c) 1988 AT&T	*/
28*0Sstevel@tonic-gate /*	  All Rights Reserved	*/
29*0Sstevel@tonic-gate 
30*0Sstevel@tonic-gate /*
31*0Sstevel@tonic-gate  * University Copyright- Copyright (c) 1982, 1986, 1988
32*0Sstevel@tonic-gate  * The Regents of the University of California
33*0Sstevel@tonic-gate  * All Rights Reserved
34*0Sstevel@tonic-gate  *
35*0Sstevel@tonic-gate  * University Acknowledgment- Portions of this document are derived from
36*0Sstevel@tonic-gate  * software developed by the University of California, Berkeley, and its
37*0Sstevel@tonic-gate  * contributors.
38*0Sstevel@tonic-gate  */
39*0Sstevel@tonic-gate 
40*0Sstevel@tonic-gate #pragma ident	"%Z%%M%	%I%	%E% SMI"
41*0Sstevel@tonic-gate 
42*0Sstevel@tonic-gate /*LINTLIBRARY*/
43*0Sstevel@tonic-gate 
44*0Sstevel@tonic-gate #include	<sys/types.h>
45*0Sstevel@tonic-gate #include	"curses_inc.h"
46*0Sstevel@tonic-gate 
47*0Sstevel@tonic-gate /* This routine erases everything on the window. */
48*0Sstevel@tonic-gate int
wclrtobot(WINDOW * win)49*0Sstevel@tonic-gate wclrtobot(WINDOW *win)
50*0Sstevel@tonic-gate {
51*0Sstevel@tonic-gate 	bool	savimmed, savsync;
52*0Sstevel@tonic-gate 	int	cury = win->_cury;
53*0Sstevel@tonic-gate 	short	curx = win->_curx;
54*0Sstevel@tonic-gate 
55*0Sstevel@tonic-gate 	if (win != curscr) {
56*0Sstevel@tonic-gate 		savimmed = win->_immed;
57*0Sstevel@tonic-gate 		savsync = win->_sync;
58*0Sstevel@tonic-gate 		win->_immed = win->_sync = FALSE;
59*0Sstevel@tonic-gate 	}
60*0Sstevel@tonic-gate 
61*0Sstevel@tonic-gate 	/* set region to be clear */
62*0Sstevel@tonic-gate 	if (cury >= win->_tmarg && cury <= win->_bmarg)
63*0Sstevel@tonic-gate 		win->_cury = win->_bmarg;
64*0Sstevel@tonic-gate 	else
65*0Sstevel@tonic-gate 		win->_cury = win->_maxy - 1;
66*0Sstevel@tonic-gate 
67*0Sstevel@tonic-gate 	win->_curx = 0;
68*0Sstevel@tonic-gate 	for (; win->_cury > cury; win->_cury--)
69*0Sstevel@tonic-gate 		(void) wclrtoeol(win);
70*0Sstevel@tonic-gate 	win->_curx = curx;
71*0Sstevel@tonic-gate 	(void) wclrtoeol(win);
72*0Sstevel@tonic-gate 
73*0Sstevel@tonic-gate 	if (win == curscr)
74*0Sstevel@tonic-gate 		return (OK);
75*0Sstevel@tonic-gate 
76*0Sstevel@tonic-gate 	/* not curscr */
77*0Sstevel@tonic-gate 	win->_sync = savsync;
78*0Sstevel@tonic-gate 
79*0Sstevel@tonic-gate 	if (win->_sync)
80*0Sstevel@tonic-gate 		wsyncup(win);
81*0Sstevel@tonic-gate 
82*0Sstevel@tonic-gate 	win->_flags |= _WINCHANGED;
83*0Sstevel@tonic-gate 	return ((win->_immed = savimmed) ? wrefresh(win) : OK);
84*0Sstevel@tonic-gate }
85