xref: /titanic_41/usr/src/lib/libcurses/screen/wmovenextch.c (revision b3697b90e692e3e5d859fb77d285d4c056d99eda)
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) 1988 by Sun Microsystems, Inc.
24  */
25 
26 #pragma ident	"%Z%%M%	%I%	%E% SMI"
27 
28 /*LINTLIBRARY*/
29 
30 #include	<sys/types.h>
31 #include	"curses_inc.h"
32 
33 int
34 wmovenextch(WINDOW *win)
35 /*
36  * wmovenextch --- moves the cursor forward to the next char of char
37  * cursor is currently on.  This is used to move forward over a multi-column
38  * character.  When the cursor is on a character at the right-most
39  * column, the cursor will stay there.
40  */
41 {
42 	chtype *_yy;
43 	short	x;
44 
45 	_yy = win->_y[win->_cury];
46 	x = win->_curx;
47 
48 	if (x + 1 > win->_maxx) /* Can't move any more. */
49 		return (ERR);
50 
51 	++x;
52 	for (; ; ) {
53 		if (x >= win->_maxx) /* No more space.. */
54 			return (ERR);
55 		if (ISCBIT(_yy[x])) {
56 			++x;
57 		} else {
58 			break;
59 		}
60 	}
61 
62 	win->_curx = x;
63 	win->_flags |= _WINMOVED;
64 	return (win->_immed ? wrefresh(win): OK);
65 }
66