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tp.c revision 1.7 
      1 /*	$NetBSD: tp.c,v 1.7 2008/05/10 15:31:05 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  * 3. Neither the name of The NetBSD Foundation nor the names of its
     16  *    contributors may be used to endorse or promote products derived
     17  *    from this software without specific prior written permission.
     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 <stdio.h>
     33 #include <string.h>
     34 #include <sys/ioctl.h>
     35 #include <sys/fcntl.h>
     36 #include <sys/mman.h>
     37 #include <errno.h>
     38 #include <unistd.h>
     39 
     40 #include "tpctl.h"
     41 
     42 #define MIN(a, b)	((a) < (b) ? (a) : (b))
     43 
     44 #ifndef lint
     45 #include <sys/cdefs.h>
     46 __RCSID("$NetBSD: tp.c,v 1.7 2008/05/10 15:31:05 martin Exp $");
     47 #endif /* not lint */
     48 
     49 int
     50 tp_init(struct tp *tp, int fd)
     51 {
     52 	u_int flags;
     53 	struct wsmouse_calibcoords calibcoords;
     54 	struct wsmouse_id id;
     55 
     56 	tp->fd = fd;
     57 
     58 #if 0
     59 	if (ioctl(tp->fd, WSMOUSEIO_GTYPE, &type) < 0)
     60 		return (-1);
     61 	if (type != WSMOUSE_TYPE_TPANEL) {
     62 		errno = EINVAL;
     63 		return (-1);
     64 	}
     65 #else
     66 	if (ioctl(tp->fd, WSMOUSEIO_GCALIBCOORDS, &calibcoords) < 0)
     67 		return (-1);
     68 #endif
     69 	flags = fcntl(tp->fd, F_GETFL);
     70 	if (flags == -1)
     71 		return (-1);
     72 	flags |= O_NONBLOCK;
     73 	if (fcntl(tp->fd, F_SETFL, flags) < 0)
     74 		return (-1);
     75 
     76 	id.type = WSMOUSE_ID_TYPE_UIDSTR;
     77 	if (ioctl(tp->fd, WSMOUSEIO_GETID, &id) == 0) {
     78 		(void)strlcpy(tp->id, (char *)id.data,
     79 			      MIN(sizeof(tp->id), id.length));
     80 	} else {
     81 		tp->id[0] = '*';
     82 		tp->id[1] = '\0';
     83 	}
     84 
     85 	return (0);
     86 }
     87 
     88 int
     89 tp_setrawmode(struct tp *tp)
     90 {
     91 	struct wsmouse_calibcoords raw;
     92 
     93 	memset(&raw, 0, sizeof(raw));
     94 	raw.samplelen = WSMOUSE_CALIBCOORDS_RESET;
     95 
     96 	return ioctl(tp->fd, WSMOUSEIO_SCALIBCOORDS, &raw);
     97 }
     98 
     99 int
    100 tp_setcalibcoords(struct tp *tp, struct wsmouse_calibcoords *calibcoords)
    101 {
    102 	return ioctl(tp->fd, WSMOUSEIO_SCALIBCOORDS, calibcoords);
    103 }
    104 
    105 int
    106 tp_flush(struct tp *tp)
    107 {
    108 	struct wscons_event ev;
    109 	int count;
    110 
    111 	count = 0;
    112 	while (read(tp->fd, &ev, sizeof(ev)) == sizeof(ev)) {
    113 		switch (ev.type) {
    114 		case WSCONS_EVENT_MOUSE_UP:
    115 		case WSCONS_EVENT_MOUSE_DOWN:
    116 		case WSCONS_EVENT_MOUSE_DELTA_X:
    117 		case WSCONS_EVENT_MOUSE_DELTA_Y:
    118 		case WSCONS_EVENT_MOUSE_ABSOLUTE_X:
    119 		case WSCONS_EVENT_MOUSE_ABSOLUTE_Y:
    120 		case WSCONS_EVENT_MOUSE_DELTA_Z:
    121 		case WSCONS_EVENT_MOUSE_ABSOLUTE_Z:
    122 			count++;
    123 			break;
    124 
    125 		default:
    126 			break;
    127 		}
    128 	}
    129 
    130 	return (count);
    131 }
    132 
    133 int
    134 tp_get(struct tp *tp, int *x, int *y, int (*cancel)(void *), void *data)
    135 {
    136 	struct wscons_event ev;
    137 	int x_done, y_done, res;
    138 
    139 	x_done = y_done = 0;
    140 	while (1) {
    141 		if (cancel != NULL && (res = (*cancel)(data)) != 0)
    142 			return (res);
    143 		if ((res = read(tp->fd, &ev, sizeof(ev))) < 0) {
    144 			if (errno != EWOULDBLOCK)
    145 				return (-1);
    146 			continue;
    147 		}
    148 		if (res != sizeof(ev)) {
    149 			errno = EINVAL;
    150 			return (-1);
    151 		}
    152 		switch (ev.type) {
    153 		case WSCONS_EVENT_MOUSE_ABSOLUTE_X:
    154 			*x = ev.value;
    155 			if (y_done)
    156 				return (0);
    157 			x_done = 1;
    158 			break;
    159 
    160 		case WSCONS_EVENT_MOUSE_ABSOLUTE_Y:
    161 			*y = ev.value;
    162 			if (x_done)
    163 				return (0);
    164 			y_done = 1;
    165 			break;
    166 
    167 		default:
    168 			break;
    169 		}
    170 	}
    171 }
    172 
    173 int
    174 tp_waitup(struct tp *tp, int msec, int (*cancel)(void*), void *data)
    175 {
    176 	int res;
    177 
    178 	while (1) {
    179 		if (cancel != NULL && (res = (*cancel)(data)) != 0)
    180 			return (res);
    181 		usleep(msec * 1000);
    182 		if (tp_flush(tp) == 0)
    183 			break;
    184 	}
    185 
    186 	return (0);
    187 }
    188