xref: /netbsd/share/examples/rump/ums_draw/ms.c (revision 6550d01e)
1 /*      $NetBSD: ms.c,v 1.1 2010/01/11 02:18:45 pooka Exp $	*/
2 
3 /*
4  * Copyright (c) 2010 Antti Kantee.  All Rights Reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
16  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18  * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25  * SUCH DAMAGE.
26  */
27 
28 /*
29  * Experimental proof-of-concept program:
30  *
31  * Read mouse events and draw silly cursor on screen.
32  */
33 
34 #include <sys/types.h>
35 #include <sys/time.h>
36 
37 #include <dev/wscons/wsconsio.h>
38 
39 #include <rump/rump.h>
40 #include <rump/rump_syscalls.h>
41 
42 #include <curses.h>
43 #include <err.h>
44 #include <paths.h>
45 #include <string.h>
46 #include <stdio.h>
47 #include <stdlib.h>
48 
49 int
50 main(int argc, char *argv[])
51 {
52 	struct wscons_event *wev;
53 	char buf[128];
54 	int fd, x = 0, y = 0;
55 
56 	rump_boot_sethowto(RUMP_AB_VERBOSE);
57 	rump_init();
58 
59 	fd = rump_sys_open("/dev/wsmouse", 0);
60 	if (fd == -1)
61 		err(1, "open");
62 
63 	initscr();
64 
65 	while (rump_sys_read(fd, buf, sizeof(buf)) > 0) {
66 		/* XXX: timespec in 5.0 vs. -current */
67 		wev = (void *)buf;
68 
69 		switch (wev->type) {
70 		case WSCONS_EVENT_MOUSE_DELTA_X:
71 			if (wev->value > 1)
72 				x++;
73 			else if (wev->value < 1)
74 				x--;
75 			if (x < 0)
76 				x = 0;
77 			break;
78 		case WSCONS_EVENT_MOUSE_DELTA_Y:
79 			if (wev->value > 1)
80 				y--;
81 			else if (wev->value < 1)
82 				y++;
83 			if (y < 0)
84 				y = 0;
85 			break;
86 		case WSCONS_EVENT_MOUSE_DOWN:
87 			mvprintw(0, 0, "button %d pressed", wev->value);
88 			break;
89 		case WSCONS_EVENT_MOUSE_UP:
90 			clear();
91 			break;
92 		default:
93 			break;
94 		}
95 		move(y, x);
96 		refresh();
97 	}
98 }
99