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, by Sun Microsystems, Inc.
24 * All rights reserved.
25 */
26
27 /*
28 * dupwin.c
29 *
30 * XCurses Library
31 *
32 * Copyright 1990, 1995 by Mortice Kern Systems Inc. All rights reserved.
33 *
34 */
35
36 #ifdef M_RCSID
37 #ifndef lint
38 static char rcsID[] = "$Header: /rd/src/libc/xcurses/rcs/dupwin.c 1.1 1995/05/26 18:41:41 ant Exp $";
39 #endif
40 #endif
41
42 #include <private.h>
43 #include <signal.h>
44 #include <stdlib.h>
45 #include <string.h>
46
47 /*f
48 * Make an exact duplicate of the window.
49 */
50 WINDOW *
dupwin(w)51 dupwin(w)
52 WINDOW *w;
53 {
54 int i;
55 WINDOW *v;
56
57 #ifdef M_CURSES_TRACE
58 __m_trace("dupwin(%p)", w);
59 #endif
60
61 /* Create (sub)window with same dimensions. */
62 v = __m_newwin(w->_parent, w->_maxy, w->_maxx, w->_begy, w->_begx);
63 if (v == (WINDOW *) 0)
64 return __m_return_pointer("dupwin", (WINDOW *) 0);
65
66 /* Same software scroll region. */
67 v->_top = w->_top;
68 v->_bottom = w->_bottom;
69
70 /* Same window input settings. */
71 v->_vmin = w->_vmin;
72 v->_vtime = w->_vtime;
73
74 /* Same window flags. */
75 v->_flags = w->_flags;
76
77 /* Copy dirty region markers. */
78 (void) memcpy(
79 v->_first, w->_first,
80 (v->_maxy + v->_maxy) * sizeof *v->_first
81 );
82
83 if (v->_parent == (WINDOW *) 0) {
84 /* For a regular window, copy source window lines in the
85 * correct order, because the pointers in _line[] may have
86 * been shuffled. A subwindow is not subject to this,
87 * because it shares its data with its parent window.
88 */
89 for (i = 0; i < w->_maxy; ++i) {
90 (void) memcpy(
91 v->_line[i], w->_line[i],
92 v->_maxx * sizeof **v->_line
93 );
94 }
95 }
96
97 return __m_return_pointer("dupwin", v);
98 }
99