1 /* $NetBSD: mouse.c,v 1.2 2024/12/23 02:58:04 blymn Exp $ */ 2 3 /*- 4 * Copyright (c) 2020 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Roy Marples. 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: mouse.c,v 1.2 2024/12/23 02:58:04 blymn Exp $"); 35 #endif /* not lint */ 36 37 #include "curses.h" 38 #include "curses_private.h" 39 40 #define DEFAULT_MAXCLICK 166 /* ncurses default */ 41 42 /* 43 * Return true if screen relative y and x are enclosed by the window. 44 */ 45 bool 46 wenclose(const WINDOW *win, int y, int x) 47 { 48 49 if (__predict_false(win == NULL)) 50 return ERR; 51 52 if (y < win->begy || y > win->begy + win->maxy || 53 x < win->begx || x > win->begx + win->maxx) 54 return false; 55 return true; 56 } 57 58 bool 59 mouse_trafo(int *y, int *x, bool to_screen) 60 { 61 62 return wmouse_trafo(stdscr, y, x, to_screen); 63 } 64 65 /* 66 * Transform y and x from screen relative to window relative 67 */ 68 bool wmouse_trafo(const WINDOW *win, int *y, int *x, bool to_screen) 69 { 70 int wy = *y, wx = *x; 71 72 if (__predict_false(win == NULL)) 73 return ERR; 74 75 if (to_screen) { 76 wy += win->begy; 77 wx += win->begx; 78 } 79 80 if (!wenclose(win, wy, wx)) 81 return false; 82 83 if (!to_screen) { 84 wy -= win->begy; 85 wx -= win->begx; 86 } 87 88 *y = wy; 89 *x = wx; 90 return true; 91 } 92 93 /* 94 * The below functions actually need some kind of mouse support. 95 * We should look into wsmouse(4) support at least as well as xterm. 96 */ 97 98 bool 99 has_mouse(void) 100 { 101 102 return false; 103 } 104 105 int 106 getmouse(__unused MEVENT *event) 107 { 108 109 return ERR; 110 } 111 112 int 113 ungetmouse(__unused MEVENT *event) 114 { 115 116 return ERR; 117 } 118 119 mmask_t 120 mousemask(__unused mmask_t newmask, __unused mmask_t *oldmask) 121 { 122 123 return 0; 124 } 125 126 int 127 mouseinterval(__unused int erval) 128 { 129 130 return DEFAULT_MAXCLICK; 131 } 132