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/*****************************************************************************
*
* grail - Gesture Recognition And Instantiation Library
*
* Copyright (C) 2010 Canonical Ltd.
*
* This program is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the
* Free Software Foundation, either version 3 of the License, or (at your
* option) any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Authors:
* Henrik Rydberg <rydberg@bitmath.org>
*
****************************************************************************/
#include <grail-touch.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
static void tp_event(struct touch_dev *dev,
const struct input_event *ev)
{
fprintf(stderr, "event %d 0x%x %d\n", ev->type, ev->code, ev->value);
}
static void tp_sync(struct touch_dev *dev,
const struct input_event *syn)
{
struct touch_frame *frame = &dev->frame;
int i, j;
for (i = 0; i < frame->nactive; i++) {
struct touch *t = frame->active[i];
fprintf(stderr, "touch %d\n", i);
fprintf(stderr, " slot: %d\n", t->slot);
fprintf(stderr, " id: %d\n", t->id);
fprintf(stderr, " tool_type: %d\n", t->tool_type);
fprintf(stderr, " x: %d\n", t->x);
fprintf(stderr, " y: %d\n", t->y);
fprintf(stderr, " touch_major: %d\n", t->touch_major);
fprintf(stderr, " touch_minor: %d\n", t->touch_minor);
fprintf(stderr, " width_major: %d\n", t->width_major);
fprintf(stderr, " width_minor: %d\n", t->width_minor);
fprintf(stderr, " angle: %f\n",
touch_angle(dev, t->orientation));
fprintf(stderr, " pressure: %f\n",
touch_pressure(dev, t->pressure));
}
fprintf(stderr, "sync %d %lld %d %d\n",
frame->nactive, frame->time, frame->ncreate, frame->ndestroy);
}
static void loop_device(struct touch_dev *dev, int fd)
{
dev->event = tp_event;
dev->sync = tp_sync;
while (!touch_dev_idle(dev, fd, 5000))
touch_dev_pull(dev, fd);
}
int main(int argc, char *argv[])
{
struct touch_dev dev;
int fd;
if (argc < 2) {
fprintf(stderr, "Usage: %s <device>\n", argv[0]);
return -1;
}
fd = open(argv[1], O_RDONLY | O_NONBLOCK);
if (fd < 0) {
fprintf(stderr, "error: could not open device\n");
return -1;
}
if (ioctl(fd, EVIOCGRAB, 1)) {
fprintf(stderr, "error: could not grab the device\n");
return -1;
}
if (touch_dev_open(&dev, fd)) {
fprintf(stderr, "error: could not open touch device\n");
return -1;
}
loop_device(&dev, fd);
touch_dev_close(&dev, fd);
ioctl(fd, EVIOCGRAB, 0);
close(fd);
return 0;
}
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