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/*****************************************************************************
*
* grail - Gesture Recognition And Instantiation Library
*
* Copyright (C) 2010 Canonical Ltd.
* Copyright (C) 2010 Henrik Rydberg <rydberg@bitmath.org>
*
* 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/>.
*
****************************************************************************/
#ifndef _GRAIL_TOUCH_H
#define _GRAIL_TOUCH_H
#include <grail-bits.h>
#include <mtdev.h>
#define DIM_TOUCH 32
#define DIM_TOUCH_BYTES ((DIM_TOUCH + 7) >> 3)
typedef __u64 touch_time_t;
struct touch {
int active;
int slot;
int id;
int tool_type;
int x, y;
int touch_major;
int touch_minor;
int width_major;
int width_minor;
int orientation;
int pressure;
};
struct touch_frame {
int nactive;
int ncreate, nmodify, ndestroy;
touch_time_t time;
grail_mask_t touches[DIM_TOUCH_BYTES];
struct touch *active[DIM_TOUCH];
struct touch touch[DIM_TOUCH];
};
struct touch_caps {
float min_x, max_x;
float min_y, max_y;
float min_orient, max_orient;
float min_press, max_press;
};
struct touch_dev {
void (*event)(struct touch_dev *dev, const struct input_event *ev);
void (*sync)(struct touch_dev *dev, const struct input_event *syn);
void *priv;
struct mtdev mtdev;
struct touch_frame frame;
struct touch_caps caps;
int slot;
int state;
};
void touch_caps_init(struct touch_dev *dev);
float touch_angle(const struct touch_dev *dev, int orientation);
float touch_pressure(const struct touch_dev *dev, int pressure);
int touch_dev_open(struct touch_dev *dev, int fd);
int touch_dev_idle(struct touch_dev *dev, int fd, int ms);
int touch_dev_pull(struct touch_dev *dev, int fd);
void touch_dev_close(struct touch_dev *dev, int fd);
#endif
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