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/***************************************************************************
*
* Multitouch X driver
* Copyright (C) 2008 Henrik Rydberg <rydberg@euromail.se>
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*
**************************************************************************/
#include "hwstate.h"
void init_hwstate(struct HWState *s, const struct Capabilities *caps)
{
int i;
memset(s, 0, sizeof(struct HWState));
for (i = 0; i < DIM_FINGER; i++)
s->data[i].tracking_id = caps->nullid;
}
static void finish_packet(struct HWState *s, const struct Capabilities *caps,
const struct input_event *syn)
{
static const mstime_t ms = 1000;
int i;
foreach_bit(i, s->used) {
if (!caps->has_abs[BIT_TOUCH_MINOR])
s->data[i].touch_minor = s->data[i].touch_major;
if (!caps->has_abs[BIT_WIDTH_MINOR])
s->data[i].width_minor = s->data[i].width_major;
}
s->evtime = syn->time.tv_usec / ms + syn->time.tv_sec * ms;
}
static int read_event(struct HWState *s, const struct Capabilities *caps,
const struct input_event *ev)
{
switch (ev->type) {
case EV_SYN:
switch (ev->code) {
case SYN_REPORT:
finish_packet(s, caps, ev);
return 1;
}
break;
case EV_KEY:
switch (ev->code) {
case BTN_LEFT:
MODBIT(s->button, MT_BUTTON_LEFT, ev->value);
break;
case BTN_MIDDLE:
MODBIT(s->button, MT_BUTTON_MIDDLE, ev->value);
break;
case BTN_RIGHT:
MODBIT(s->button, MT_BUTTON_RIGHT, ev->value);
break;
}
break;
case EV_ABS:
switch (ev->code) {
case ABS_MT_SLOT:
if (ev->value >= 0 && ev->value < DIM_FINGER)
s->slot = ev->value;
break;
case ABS_MT_TOUCH_MAJOR:
s->data[s->slot].touch_major = ev->value;
break;
case ABS_MT_TOUCH_MINOR:
s->data[s->slot].touch_minor = ev->value;
break;
case ABS_MT_WIDTH_MAJOR:
s->data[s->slot].width_major = ev->value;
break;
case ABS_MT_WIDTH_MINOR:
s->data[s->slot].width_minor = ev->value;
break;
case ABS_MT_ORIENTATION:
s->data[s->slot].orientation = ev->value;
break;
case ABS_MT_PRESSURE:
s->data[s->slot].pressure = ev->value;
break;
case ABS_MT_POSITION_X:
s->data[s->slot].position_x = ev->value;
break;
case ABS_MT_POSITION_Y:
s->data[s->slot].position_y = ev->value;
break;
case ABS_MT_TRACKING_ID:
s->data[s->slot].tracking_id = ev->value;
MODBIT(s->used, s->slot,
ev->value != caps->nullid);
break;
}
break;
}
return 0;
}
int modify_hwstate(struct HWState *s, struct MTDev *dev,
const struct Capabilities *caps)
{
struct input_event ev;
while (!mtdev_empty(dev)) {
mtdev_pop(dev, &ev);
if (read_event(s, caps, &ev))
return 1;
}
return 0;
}
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