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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
*
**************************************************************************/
#ifndef MTSTATE_H
#define MTSTATE_H
#include "hwstate.h"
struct MTFinger {
struct FingerData hw;
int id, thumb;
};
struct MTState {
struct MTFinger finger[DIM_FINGER];
int nfinger;
unsigned button;
mstime_t evtime;
};
void init_mtstate(struct MTState *s);
void extract_mtstate(struct MTState *s,
const struct HWState *hs,
const struct Capabilities *caps);
void output_mtstate(const struct MTState *s);
const struct MTFinger *find_finger(const struct MTState *s, int id);
static inline int center_dist2(const struct MTFinger *a,
const struct Capabilities *caps)
{
return dist2(a->hw.position_x - get_cap_xmid(caps),
a->hw.position_y - get_cap_ymid(caps));
}
static inline int center_maxdist2(const struct Capabilities *caps)
{
return dist2(caps->abs_position_x.maximum - get_cap_xmid(caps),
caps->abs_position_y.maximum - get_cap_ymid(caps));
}
#endif
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