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 #pragma ident "%Z%%M% %I% %E% SMI"
41
42 /*LINTLIBRARY*/
43
44 #include <sys/types.h>
45 #include "curses_inc.h"
46
47 /*
48 * Make a number of lines look like they have/have not been changed.
49 * y: the start line
50 * n: the number of lines affected
51 * changed: 1: changed
52 * 0: not changed
53 * -1: changed. Called internally - In this mode
54 * even REDRAW lines are changed.
55 */
56
57 int
wtouchln(WINDOW * win,int y,int n,int changed)58 wtouchln(WINDOW *win, int y, int n, int changed)
59 {
60 short *firstch, *lastch, b, e;
61 int maxy = win->_maxy;
62
63 if (y >= maxy)
64 return (ERR);
65 if (y < 0)
66 y = 0;
67 if ((y + n) > maxy)
68 n = maxy - y;
69 firstch = win->_firstch + y;
70 lastch = win->_lastch + y;
71 if (changed) {
72 win->_flags |= _WINCHANGED;
73 b = 0;
74 e = win->_maxx - 1;
75 } else {
76 b = _INFINITY;
77 e = -1;
78 win->_flags &= ~_WINCHANGED;
79 }
80
81 for (; n-- > 0; firstch++, lastch++) {
82 if (changed == -1 || *firstch != _REDRAW)
83 *firstch = b, *lastch = e;
84 }
85
86 if ((changed == 1) && win->_sync)
87 wsyncup(win);
88
89 return (((changed == 1) && win->_immed) ? wrefresh(win) : OK);
90 }
91