/*****************************************************************************
 *
 * 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_GESTURE_H
#define _GRAIL_GESTURE_H

#include <grail-touch.h>

#define DIM_GESTURE_PROP 8
typedef int gesture_prop_t;

enum gesture_type {
	GE_MOVE,
	GE_VSCROLL,
	DIM_GESTURE_TYPE
};

enum gesture_state {
	GS_CANCEL,
	GS_BEGIN,
	GS_END
};

struct gesture_flag {
	enum gesture_type type;
	touch_time_t time;
	enum gesture_state state;
};

struct gesture_event {
	enum gesture_type type;
	touch_time_t time;
	gesture_prop_t prop[DIM_GESTURE_PROP];
};

struct gesture_dev {
	struct gedev_impl *impl;
	void *priv;
};

struct gesture_client {
	void (*gesture)(struct gesture_client *client,
			const struct gesture_event *ev);
	int priority[DIM_GESTURE_TYPE];
	struct client_impl *impl;
	void *priv;
};

int client_init(struct gesture_client *client, void *priv);
void client_flag(struct gesture_client *client,
		 const struct gesture_flag *flag);
void client_event(struct gesture_client *client,
		  const struct gesture_event *ev);
void client_sync(struct gesture_client *client);
void client_destroy(struct gesture_client *client);

int gedev_init(struct gesture_dev *dev, void *priv);
int gedev_attach_client(struct gesture_dev *dev,
			struct gesture_client *client);

void gedev_flag(struct gesture_dev *dev, const struct gesture_flag *flag);
void gedev_event(struct gesture_dev *dev, const struct gesture_event *ev);
void gedev_sync(struct gesture_dev *dev);

void gedev_detach_client(struct gesture_dev *dev,
			 struct gesture_client *client);
void gedev_destroy(struct gesture_dev *dev);

#endif