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 /*LINTLIBRARY*/
41
42 #include <sys/types.h>
43 #include "curses_inc.h"
44
45 /*
46 * Move a derived window inside its parent window.
47 * This routine does not change the screen relative
48 * parameters begx and begy. Thus, it can be used to
49 * display different parts of the parent window at
50 * the same screen coordinate.
51 */
52
53 int
mvderwin(WINDOW * win,int pary,int parx)54 mvderwin(WINDOW *win, int pary, int parx)
55 {
56 int y, maxy;
57 WINDOW *par;
58 chtype obkgd, **wc, **pc;
59 short *begch, *endch, maxx;
60
61 if ((par = win->_parent) == NULL)
62 goto bad;
63 if (pary == win->_pary && parx == win->_parx)
64 return (OK);
65
66 maxy = win->_maxy-1;
67 maxx = win->_maxx-1;
68 if ((parx + maxx) >= par->_maxx || (pary + maxy) >= par->_maxy)
69 bad:
70 return (ERR);
71
72 /* save all old changes */
73 wsyncup(win);
74
75 /* rearrange pointers */
76 /*LINTED*/
77 win->_parx = (short) parx;
78 /*LINTED*/
79 win->_pary = (short) pary;
80 wc = win->_y;
81 pc = par->_y + pary;
82 begch = win->_firstch;
83 endch = win->_lastch;
84 for (y = 0; y <= maxy; ++y, ++wc, ++pc, ++begch, ++endch) {
85 *wc = *pc + parx;
86 *begch = 0;
87 *endch = maxx;
88 }
89
90 /* change background to our own */
91 obkgd = win->_bkgd;
92 win->_bkgd = par->_bkgd;
93 return (wbkgd(win, obkgd));
94 }
95