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 #pragma ident	"%Z%%M%	%I%	%E% SMI"
28 
29 /* LINTLIBRARY */
30 
31 /*
32  * mvwin.c
33  *
34  * XCurses Library
35  *
36  * Copyright 1990, 1995 by Mortice Kern Systems Inc.  All rights reserved.
37  *
38  */
39 
40 #ifdef M_RCSID
41 #ifndef lint
42 static char rcsID[] = "$Header: /rd/src/libc/xcurses/rcs/mvwin.c 1.3 "
43 "1995/06/15 19:19:58 ant Exp $";
44 #endif
45 #endif
46 
47 #include <private.h>
48 
49 /*
50  * Move window so that the upper left-hand corner is at (x,y). If the move
51  * would cause the window to be off the screen, it is an error and the
52  * window is not moved.  Moving subwindows is allowed, but should be
53  * avoided.
54  */
55 int
mvwin(WINDOW * w,int by,int bx)56 mvwin(WINDOW *w, int by, int bx)
57 {
58 	int	i, dx, dy;
59 	WINDOW	*parent = w->_parent;
60 
61 	/* Check lower bounds of new window position. */
62 	if (by < 0 || bx < 0)
63 		return (ERR);
64 
65 	if (parent == NULL) {
66 		/* Check upper bounds of normal window. */
67 		if (lines < by + w->_maxy || columns < bx + w->_maxx)
68 			return (ERR);
69 	} else {
70 		/* Check upper bounds of sub-window. */
71 		if (parent->_begy + parent->_maxy < by + w->_maxy ||
72 			parent->_begx + parent->_maxx < bx + w->_maxx)
73 			return (ERR);
74 
75 		/*
76 		 * Move the sub-window's line pointers to the parent
77 		 * window's data.
78 		 */
79 		dy = by - parent->_begy;
80 		dx = bx - parent->_begx;
81 
82 		for (i = 0; i <= w->_maxy; ++i)
83 			w->_line[i] = &parent->_line[dy++][dx];
84 	}
85 
86 	w->_begy = (short) by;
87 	w->_begx = (short) bx;
88 	(void) wtouchln(w, 0, w->_maxy, 1);
89 
90 	return (OK);
91 }
92 
93 int
mvderwin(WINDOW * w,int py,int px)94 mvderwin(WINDOW *w, int py, int px)
95 {
96 	int	code;
97 	WINDOW	*parent;
98 
99 	parent = w->_parent;
100 
101 	if (parent == NULL)
102 		return (ERR);
103 
104 	/* Absolute screen address. */
105 	py += parent->_begy;
106 	px += parent->_begx;
107 
108 	code = mvwin(w, py, px);
109 
110 	return (code);
111 }
112