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 (c) 1995-1998 by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27 /* LINTLIBRARY */
28
29 /*
30 * dupwin.c
31 *
32 * XCurses Library
33 *
34 * Copyright 1990, 1995 by Mortice Kern Systems Inc. All rights reserved.
35 *
36 */
37
38 #ifdef M_RCSID
39 #ifndef lint
40 static char rcsID[] = "$Header: /rd/src/libc/xcurses/rcs/dupwin.c 1.1 "
41 "1995/05/26 18:41:41 ant Exp $";
42 #endif
43 #endif
44
45 #include <private.h>
46 #include <stdlib.h>
47 #include <string.h>
48
49 /*
50 * Make an exact duplicate of the window.
51 */
52 WINDOW *
dupwin(WINDOW * w)53 dupwin(WINDOW *w)
54 {
55 int i;
56 WINDOW *v;
57
58 /* Create (sub)window with same dimensions. */
59 v = __m_newwin(w->_parent, w->_maxy, w->_maxx, w->_begy, w->_begx);
60 if (v == NULL)
61 return (NULL);
62
63 /* Same software scroll region. */
64 v->_top = w->_top;
65 v->_bottom = w->_bottom;
66
67 /* Same window input settings. */
68 v->_vmin = w->_vmin;
69 v->_vtime = w->_vtime;
70
71 /* Same window flags. */
72 v->_flags = w->_flags;
73
74 /* Copy dirty region markers. */
75 (void) memcpy(v->_first, w->_first,
76 (v->_maxy + v->_maxy) * sizeof (*v->_first));
77
78 if (v->_parent == NULL) {
79 /*
80 * For a regular window, copy source window lines in the
81 * correct order, because the pointers in _line[] may have
82 * been shuffled. A subwindow is not subject to this,
83 * because it shares its data with its parent window.
84 */
85 for (i = 0; i < w->_maxy; ++i) {
86 (void) memcpy(v->_line[i], w->_line[i],
87 v->_maxx * sizeof (**v->_line));
88 }
89 }
90
91 return (v);
92 }
93