1/*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License, Version 1.0 only
6 * (the "License").  You may not use this file except in compliance
7 * with the License.
8 *
9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10 * or http://www.opensolaris.org/os/licensing.
11 * See the License for the specific language governing permissions
12 * and limitations under the License.
13 *
14 * When distributing Covered Code, include this CDDL HEADER in each
15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16 * If applicable, add the following below this CDDL HEADER, with the
17 * fields enclosed by brackets "[]" replaced with your own identifying
18 * information: Portions Copyright [yyyy] [name of copyright owner]
19 *
20 * CDDL HEADER END
21 */
22/*
23 * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
24 * Use is subject to license terms.
25 */
26
27/*	Copyright (c) 1988 AT&T	*/
28/*	  All Rights Reserved	*/
29
30/*
31 * University Copyright- Copyright (c) 1982, 1986, 1988
32 * The Regents of the University of California
33 * All Rights Reserved
34 *
35 * University Acknowledgment- Portions of this document are derived from
36 * software developed by the University of California, Berkeley, and its
37 * contributors.
38 */
39
40#pragma ident	"%Z%%M%	%I%	%E% SMI"
41
42/*LINTLIBRARY*/
43
44/*
45 * This routine is used by initialization routines. It sets it up
46 * such that a line is removed from the user's screen by initscr. This
47 * function must be called BEFORE initscr. It works by leaving a cookie
48 * which tells initscr to reduce the size of stdscr by one for each line
49 * ripped off. This routine has been generalized so that other applications
50 * can make use of it in a straightforward manner.
51 */
52
53#include <sys/types.h>
54#include "curses_inc.h"
55
56static	struct _ripdef
57{
58	int line;
59	int (*initfunction)(WINDOW *, int);
60} _ripstruct[5];
61
62static char _ripcounter;
63
64static	void
65_init_rip_func(void)
66{
67	int	i, flag;
68
69	for (i = 0; i < _ripcounter; i++) {
70		LINES = --SP->lsize;
71/*
72 * We don't need to check for newwin returning NULL because even if
73 * we did and broke from the for loop, the application's initfunction
74 * would not be called and they would have a NULL window pointer.  Their
75 * code would then blow up if they don't check it anyway.  Therefore,
76 * we can send in the newwin and their code has to check for NULL in either
77 * case.
78 *
79 * NOTE:  The application has the responsibilty to do a delwin !!!
80 */
81		(*_ripstruct[i].initfunction) (newwin(1, COLS,
82		    ((flag = _ripstruct[i].line) > 0) ? 0 : LINES, 0), COLS);
83		if (flag > 0)
84		    SP->Yabove++;
85	}
86	_ripcounter = 0;
87}
88
89int
90ripoffline(int line, int (*initfunction)(WINDOW *, int))
91{
92	if (_ripcounter < 5) {
93		_ripstruct[_ripcounter].line = line;
94		_ripstruct[_ripcounter++].initfunction = initfunction;
95	}
96	_rip_init = _init_rip_func;
97	return (OK);
98}
99