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