xref: /illumos-gate/usr/src/lib/libcurses/screen/getsyx.c (revision d363b1b0cb9ef6d6f3febdd8d1cba46507e97098)
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 /*
46  * Get the current screen coordinates (y, x).
47  *
48  * The current screen coordinates are defined as the last place that
49  * the cursor was placed by a wnoutrefresh(), pnoutrefresh() or setsyx()
50  * call. If leaveok() was true for the last window refreshed, then
51  * return (-1, -1) so that setsyx() can reset the leaveok flag.
52  *
53  * This function is actually called by the macro getsyx(y, x), which is
54  * defined in curses.h as:
55  *
56  * #define getsyx(y, x)	_getsyx(&y, &x)
57  *
58  * Note that this macro just adds in the '&'. In this way, getsyx()
59  * is parallel with the other getyx() routines which don't require
60  * ampersands. The reason that this can't all be a macro is that
61  * that we need to access SP, which is normally not available in
62  * user-level routines.
63  */
64 
65 int
66 _getsyx(int *yp, int *xp)
67 {
68 	if (SP->virt_scr->_leave)
69 		*yp = *xp = -1;
70 	else {
71 		*yp = _virtscr->_cury - SP->Yabove;
72 		*xp = _virtscr->_curx;
73 	}
74 	return (OK);
75 }
76