xref: /illumos-gate/usr/src/lib/libcurses/screen/wsyncup.c (revision 1da57d551424de5a9d469760be7c4b4d4f10a755)
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 /* Sync the changes in a window with its ancestors. */
46 
47 void
wsyncup(WINDOW * win)48 wsyncup(WINDOW *win)
49 {
50 	short	*wbch, *wech, *pbch, *pech, bch, ech;
51 	int	wy, px, py, endy;
52 	WINDOW	*par;
53 
54 	for (par = win->_parent; par != NULL; win = par, par = par->_parent) {
55 		py = win->_pary;
56 		px = win->_parx;
57 		endy = win->_maxy;
58 
59 		wbch = win->_firstch;
60 		wech = win->_lastch;
61 		pbch = par->_firstch+ py;
62 		pech = par->_lastch+ py;
63 
64 		/*
65 		 * I don't think we need check WINCHANGED first.
66 		 * The reasoning is that all internal calls will have come
67 		 * from a function that did change the window.  And assumably
68 		 * all external calls will work the same way.
69 		 */
70 		par->_flags |= _WINCHANGED;
71 		/* check each line */
72 		for (wy = 0; wy < endy; ++wy, ++wbch, ++wech, ++pbch, ++pech)
73 			if (*wbch != _INFINITY) {
74 				bch = px + *wbch;
75 				ech = px + *wech;
76 				if (*pbch > bch)
77 					*pbch = bch;
78 				if (*pech < ech)
79 					*pech = ech;
80 			}
81 	}
82 }
83 
84 void
wcursyncup(WINDOW * win)85 wcursyncup(WINDOW *win)
86 {
87 	WINDOW	*par = win->_parent;
88 
89 	while (par != NULL) {
90 		par->_cury = win->_cury + win->_pary;
91 		par->_curx = win->_curx + win->_parx;
92 		par = (win = par)->_parent;
93 	}
94 }
95