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 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 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