xref: /illumos-gate/usr/src/lib/libcurses/screen/wmovenextch.c (revision 7a6d80f1660abd4755c68cbd094d4a914681d26e)
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 /*LINTLIBRARY*/
27 
28 #include	<sys/types.h>
29 #include	"curses_inc.h"
30 
31 int
32 wmovenextch(WINDOW *win)
33 /*
34  * wmovenextch --- moves the cursor forward to the next char of char
35  * cursor is currently on.  This is used to move forward over a multi-column
36  * character.  When the cursor is on a character at the right-most
37  * column, the cursor will stay there.
38  */
39 {
40 	chtype *_yy;
41 	short	x;
42 
43 	_yy = win->_y[win->_cury];
44 	x = win->_curx;
45 
46 	if (x + 1 > win->_maxx) /* Can't move any more. */
47 		return (ERR);
48 
49 	++x;
50 	for (; ; ) {
51 		if (x >= win->_maxx) /* No more space.. */
52 			return (ERR);
53 		if (ISCBIT(_yy[x])) {
54 			++x;
55 		} else {
56 			break;
57 		}
58 	}
59 
60 	win->_curx = x;
61 	win->_flags |= _WINMOVED;
62 	return (win->_immed ? wrefresh(win): OK);
63 }
64