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 #include <stdlib.h>
45 #include <string.h>
46 #include <sys/types.h>
47 #include "curses_inc.h"
48
49 /*
50 * Duplicate a window.
51 *
52 * SS: calling makenew to allocate a new window is wastefull, since
53 * makenew initializes all the variables, and then we re-initialize
54 * the desired values to these variables.
55 */
56
57 WINDOW *
dupwin(WINDOW * win)58 dupwin(WINDOW *win)
59 {
60 WINDOW *new;
61 int i, ncolumns = win->_maxx, nlines = win->_maxy;
62 size_t line_size = nlines * sizeof (short);
63 chtype **wincp, **newcp;
64 int ncolsav = ncolumns;
65
66 /* allocate storage for new window and do block copy of */
67 /* old one into new */
68
69 if ((new = (WINDOW *) malloc(sizeof (WINDOW))) == NULL)
70 goto out0;
71
72 (void) memcpy(new, win, sizeof (WINDOW));
73
74 /* allocate storage for "malloced" fields of the new window */
75
76 if ((new->_firstch = (short *)malloc((unsigned)2 * line_size)) == NULL)
77 goto out1;
78 else
79 win->_lastch = win->_firstch + nlines;
80
81 if ((new->_y = (chtype **) malloc(nlines * sizeof (chtype *))) ==
82 NULL) {
83 /*
84 * We put the free's here rather than after the image call, this
85 * is because _image free's all the rest of the malloc'ed areas.
86 */
87 free((char *)new->_firstch);
88 out1:
89 free((char *)new);
90 goto out0;
91 }
92
93 if (_image(new) == ERR) {
94 out0:
95 curs_errno = CURS_BAD_MALLOC;
96 #ifdef DEBUG
97 strcpy(curs_parm_err, "dupwin");
98 curserr();
99 #endif /* DEBUG */
100 return ((WINDOW *) NULL);
101 }
102
103 /* copy information from "malloced" areas of the old window into new */
104
105 wincp = win->_y;
106 newcp = new->_y;
107 for (i = 0; i < nlines; ++i, ++wincp, ++newcp) {
108 chtype *ws, *we, *ns, *ne, wc;
109 int n;
110
111 ws = *wincp;
112 we = ws + ncolsav - 1;
113 /* skip partial characters */
114 for (; ws <= we; ++ws)
115 if (!ISCBIT(*ws))
116 break;
117 for (; we >= ws; --we)
118 if (!ISCBIT(*we))
119 break;
120 if (we >= ws) {
121 wc = *we;
122 n = _curs_scrwidth[TYPE(wc)];
123 if ((we + n) <= (*wincp + ncolsav))
124 we += n;
125 ns = *newcp + (ws - *wincp);
126 ne = *newcp + (we - *wincp);
127 (void) memcpy((char *)ns, (char *)ws,
128 (ne-ns)*sizeof (chtype));
129 } else
130 ns = ne = *newcp + ncolsav;
131 /* fill the rest with background chars */
132 wc = win->_bkgd;
133 for (ws = *newcp; ws < ns; ++ws)
134 *ws = wc;
135 for (ws = *newcp+ncolsav-1; ws >= ne; --ws)
136 *ws = wc;
137 }
138
139 (void) memcpy((char *)new->_firstch, (char *)win->_firstch,
140 2 * line_size);
141
142 new->_flags |= _WINCHANGED;
143 new->_ndescs = 0;
144 /*
145 * Just like we don't create this window as a subwin if the one
146 * sent is, we don't create a padwin. Besides, if the user
147 * calls p*refresh a padwin will be created then.
148 */
149 new->_padwin = new->_parent = (WINDOW *) NULL;
150 new->_pary = new->_parx = -1;
151
152 new->_index = win->_index;
153 new->_nbyte = win->_nbyte;
154 new->_insmode = win->_insmode;
155 (void) memcpy((char *)new->_waitc, (char *)win->_waitc,
156 _csmax * sizeof (char));
157
158 return (new);
159 }
160