xref: /titanic_41/usr/src/ucblib/libcurses/id_subwins.c (revision 6f45ec7b0b964c3be967c4880e8867ac1e7763a5)
1 /*
2  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
3  * Use is subject to license terms.
4  */
5 
6 /*	Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T	*/
7 /*	  All Rights Reserved  	*/
8 
9 /*
10  * Copyright (c) 1980 Regents of the University of California.
11  * All rights reserved.  The Berkeley software License Agreement
12  * specifies the terms and conditions for redistribution.
13  */
14 
15 #pragma ident	"%Z%%M%	%I%	%E% SMI"
16 
17 /*LINTLIBRARY*/
18 
19 #ifndef lint
20 static char
21 sccsid[] = "@(#)id_subwins.c 1.3 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */
22 #endif	/* not lint */
23 
24 #include	"curses.ext"
25 
26 /*
27  * _id_subwins:
28  *	Re-sync the pointers to _y for all the subwindows.
29  */
30 
31 void
32 _id_subwins(WINDOW *orig)
33 {
34 	WINDOW	*win;
35 	int	realy;
36 	int	y, oy;
37 
38 	realy = orig->_begy + orig->_cury;
39 	for (win = orig->_nextp; win != orig; win = win->_nextp) {
40 		/*
41 		 * If the window ends before our current position,
42 		 * don't need to do anything.
43 		 */
44 		if (win->_begy + win->_maxy <= realy)
45 			continue;
46 
47 		oy = orig->_cury;
48 		for (y = realy - win->_begy; y < win->_maxy; y++, oy++)
49 			win->_y[y] = &orig->_y[oy][win->_ch_off];
50 	}
51 }
52