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* Multitouch X driver
* Copyright (C) 2008 Henrik Rydberg <>
* 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
* 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
#ifndef HWSTATE_H
#define HWSTATE_H
#include "capabilities.h"
struct FingerState {
int touch_major, touch_minor;
int width_major, width_minor;
int orientation, pressure;
int position_x, position_y;
int tracking_id;
struct HWState {
struct FingerState data[DIM_FINGER];
bitmask_t used;
bitmask_t slot;
bitmask_t button;
mstime_t evtime;
void init_hwstate(struct HWState *s,
const struct Capabilities *caps);
int modify_hwstate(struct HWState *s, struct mtdev *dev, int fd,
const struct Capabilities *caps);
void output_hwstate(const struct HWState *s);
static inline int finger_dist2(const struct FingerState *a,
const struct FingerState *b)
return dist2(a->position_x - b->position_x,
a->position_y - b->position_y);