/*****************************************************************************
 *
 * 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>
 *
 ****************************************************************************/

#ifndef _GRAIL_H
#define _GRAIL_H

#include <linux/input.h>

#define DIM_GRAIL_PROP 8
#define DIM_GRAIL_TYPE 64

typedef int grail_prop_t;
typedef __u64 grail_time_t;
typedef unsigned long grail_clientid_t;

struct grail_event {
        int type;
        int id;
        int x;
        int y;
        int status;
        grail_time_t time;
        grail_prop_t prop[DIM_GRAIL_PROP];
};

struct grail {
	int (*get_clients)(int x, int y, int screen,
			   grail_clientid_t *clients, int nclients);
	void (*event)(struct grail *ge,
		      const struct input_event *ev);
	void (*gesture)(struct grail *ge,
			const struct grail_event *ev);
	struct grail_impl *impl;
	void *priv;
};

int grail_open(struct grail *ge, int fd);
int grail_idle(struct grail *ge, int fd, int ms);
int grail_pull(struct grail *ge, int fd);
void grail_close(struct grail *ge, int fd);

void grail_add_client(struct grail *ge, grail_clientid_t id,
		      const int *types, const int *priority, int ntypes);
void grail_remove_client(struct grail *ge, grail_clientid_t id);


#endif