1 /* $NetBSD: timeout.c,v 1.10 2024/12/23 02:58:04 blymn Exp $ */
2
3 /*-
4 * Copyright (c) 1999 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Julian Coleman.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 #include <sys/cdefs.h>
33 #ifndef lint
34 __RCSID("$NetBSD: timeout.c,v 1.10 2024/12/23 02:58:04 blymn Exp $");
35 #endif /* not lint */
36
37 #include "curses.h"
38 #include "curses_private.h"
39
40 #ifndef _CURSES_USE_MACROS
41
42 /*
43 * timeout --
44 * Set the getch() delay for stdscr.
45 */
46 void
timeout(int delay)47 timeout(int delay)
48 {
49
50 wtimeout(stdscr, delay);
51 }
52
53 #endif
54
55 /*
56 * wtimeout --
57 * Set the getch() delay for a window.
58 */
59 void
wtimeout(WINDOW * win,int delay)60 wtimeout(WINDOW *win, int delay)
61 {
62
63 if (__predict_false(win == NULL))
64 return;
65
66 if (delay < 0)
67 win->delay = -1;
68 else if (!delay)
69 win->delay = delay;
70 else {
71 /*
72 * 1. VTIME is a char
73 * 2. timeout granularity is ms but VTIME is 0.1s
74 */
75 if (delay > 25500)
76 win->delay = 255;
77 else
78 win->delay = (delay - 1)/ 100 + 1;
79 }
80 }
81