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tp.c revision 1.6 
      1 /*	$NetBSD: tp.c,v 1.6 2008/04/29 06:53:04 martin Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 2002, 2003 TAKEMRUA Shin
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  *
     16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     26  * POSSIBILITY OF SUCH DAMAGE.
     27  */
     28 
     29 #include <stdio.h>
     30 #include <string.h>
     31 #include <sys/ioctl.h>
     32 #include <sys/fcntl.h>
     33 #include <sys/mman.h>
     34 #include <errno.h>
     35 #include <unistd.h>
     36 
     37 #include "tpctl.h"
     38 
     39 #define MIN(a, b)	((a) < (b) ? (a) : (b))
     40 
     41 #ifndef lint
     42 #include <sys/cdefs.h>
     43 __RCSID("$NetBSD: tp.c,v 1.6 2008/04/29 06:53:04 martin Exp $");
     44 #endif /* not lint */
     45 
     46 int
     47 tp_init(struct tp *tp, int fd)
     48 {
     49 	u_int flags;
     50 	struct wsmouse_calibcoords calibcoords;
     51 	struct wsmouse_id id;
     52 
     53 	tp->fd = fd;
     54 
     55 #if 0
     56 	if (ioctl(tp->fd, WSMOUSEIO_GTYPE, &type) < 0)
     57 		return (-1);
     58 	if (type != WSMOUSE_TYPE_TPANEL) {
     59 		errno = EINVAL;
     60 		return (-1);
     61 	}
     62 #else
     63 	if (ioctl(tp->fd, WSMOUSEIO_GCALIBCOORDS, &calibcoords) < 0)
     64 		return (-1);
     65 #endif
     66 	flags = fcntl(tp->fd, F_GETFL);
     67 	if (flags == -1)
     68 		return (-1);
     69 	flags |= O_NONBLOCK;
     70 	if (fcntl(tp->fd, F_SETFL, flags) < 0)
     71 		return (-1);
     72 
     73 	id.type = WSMOUSE_ID_TYPE_UIDSTR;
     74 	if (ioctl(tp->fd, WSMOUSEIO_GETID, &id) == 0) {
     75 		(void)strlcpy(tp->id, (char *)id.data,
     76 			      MIN(sizeof(tp->id), id.length));
     77 	} else {
     78 		tp->id[0] = '*';
     79 		tp->id[1] = '\0';
     80 	}
     81 
     82 	return (0);
     83 }
     84 
     85 int
     86 tp_setrawmode(struct tp *tp)
     87 {
     88 	struct wsmouse_calibcoords raw;
     89 
     90 	memset(&raw, 0, sizeof(raw));
     91 	raw.samplelen = WSMOUSE_CALIBCOORDS_RESET;
     92 
     93 	return ioctl(tp->fd, WSMOUSEIO_SCALIBCOORDS, &raw);
     94 }
     95 
     96 int
     97 tp_setcalibcoords(struct tp *tp, struct wsmouse_calibcoords *calibcoords)
     98 {
     99 	return ioctl(tp->fd, WSMOUSEIO_SCALIBCOORDS, calibcoords);
    100 }
    101 
    102 int
    103 tp_flush(struct tp *tp)
    104 {
    105 	struct wscons_event ev;
    106 	int count;
    107 
    108 	count = 0;
    109 	while (read(tp->fd, &ev, sizeof(ev)) == sizeof(ev)) {
    110 		switch (ev.type) {
    111 		case WSCONS_EVENT_MOUSE_UP:
    112 		case WSCONS_EVENT_MOUSE_DOWN:
    113 		case WSCONS_EVENT_MOUSE_DELTA_X:
    114 		case WSCONS_EVENT_MOUSE_DELTA_Y:
    115 		case WSCONS_EVENT_MOUSE_ABSOLUTE_X:
    116 		case WSCONS_EVENT_MOUSE_ABSOLUTE_Y:
    117 		case WSCONS_EVENT_MOUSE_DELTA_Z:
    118 		case WSCONS_EVENT_MOUSE_ABSOLUTE_Z:
    119 			count++;
    120 			break;
    121 
    122 		default:
    123 			break;
    124 		}
    125 	}
    126 
    127 	return (count);
    128 }
    129 
    130 int
    131 tp_get(struct tp *tp, int *x, int *y, int (*cancel)(void *), void *data)
    132 {
    133 	struct wscons_event ev;
    134 	int x_done, y_done, res;
    135 
    136 	x_done = y_done = 0;
    137 	while (1) {
    138 		if (cancel != NULL && (res = (*cancel)(data)) != 0)
    139 			return (res);
    140 		if ((res = read(tp->fd, &ev, sizeof(ev))) < 0) {
    141 			if (errno != EWOULDBLOCK)
    142 				return (-1);
    143 			continue;
    144 		}
    145 		if (res != sizeof(ev)) {
    146 			errno = EINVAL;
    147 			return (-1);
    148 		}
    149 		switch (ev.type) {
    150 		case WSCONS_EVENT_MOUSE_ABSOLUTE_X:
    151 			*x = ev.value;
    152 			if (y_done)
    153 				return (0);
    154 			x_done = 1;
    155 			break;
    156 
    157 		case WSCONS_EVENT_MOUSE_ABSOLUTE_Y:
    158 			*y = ev.value;
    159 			if (x_done)
    160 				return (0);
    161 			y_done = 1;
    162 			break;
    163 
    164 		default:
    165 			break;
    166 		}
    167 	}
    168 }
    169 
    170 int
    171 tp_waitup(struct tp *tp, int msec, int (*cancel)(void*), void *data)
    172 {
    173 	int res;
    174 
    175 	while (1) {
    176 		if (cancel != NULL && (res = (*cancel)(data)) != 0)
    177 			return (res);
    178 		usleep(msec * 1000);
    179 		if (tp_flush(tp) == 0)
    180 			break;
    181 	}
    182 
    183 	return (0);
    184 }
    185