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/*****************************************************************************
*
* 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 GRAIL_STATUS_BEGIN 0
#define GRAIL_STATUS_UPDATE 1
#define GRAIL_STATUS_END 2
#define DIM_GRAIL_TYPE 64
#define DIM_GRAIL_TYPE_BYTES (DIM_GRAIL_TYPE >> 3)
#define GRAIL_TYPE_MOVE 0
#define GRAIL_TYPE_VSCROLL 1
#define GRAIL_TYPE_HSCROLL 2
#define GRAIL_TYPE_SCROLL 3
#define DIM_GRAIL_PROP 8
static const int GRAIL_NPROP[] = {
2, /* MOVE */
1, /* VSCROLL */
1, /* HSCROLL */
2, /* SCROLL */
};
typedef unsigned char grail_mask_t;
typedef int grail_prop_t;
typedef __u64 grail_time_t;
static inline void grail_set_mask(grail_mask_t *mask, int i)
{
mask[i >> 3] |= (1 << (i & 7));
}
static inline void grail_clear_mask(grail_mask_t *mask, int i)
{
mask[i >> 3] &= ~(1 << (i & 7));
}
static inline int grail_get_mask(const grail_mask_t *mask, int i)
{
return (mask[i >> 3] >> (i & 7)) & 1;
}
struct grail_coord {
int x, y;
};
struct grail_client_id {
int client;
int root, event, child;
};
struct grail_client_info {
struct grail_client_id id;
grail_mask_t mask[DIM_GRAIL_TYPE_BYTES];
};
struct grail_event {
int type;
int id;
int status;
struct grail_coord pos;
struct grail_client_id client_id;
grail_time_t time;
grail_prop_t prop[DIM_GRAIL_PROP];
};
struct grail {
int (*get_clients)(struct grail *ge,
struct grail_client_info *client, int max_clients,
const struct grail_coord *coords, int num_coords,
const grail_mask_t *types);
void (*event)(struct grail *ge,
const struct input_event *ev);
void (*gesture)(struct grail *ge,
const struct grail_event *ev);
struct grail_impl *impl;
struct gesture_inserter *gin;
struct gesture_recognizer *gru;
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);
#endif
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