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/*****************************************************************************
*
* grail - Gesture Recognition And Instantiation Library
*
* Copyright (C) 2010-2011 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/>.
*
****************************************************************************/
#include "grail-recognizer.h"
#include <math.h>
#include <stdio.h>
static const int getype[DIM_TOUCH + 1] = {
0,
0,
GRAIL_TYPE_PINCH2,
GRAIL_TYPE_PINCH3,
GRAIL_TYPE_PINCH4,
GRAIL_TYPE_PINCH5,
};
static const int fm_mask = 0x04;
static void set_props(const struct gesture_inserter *gin,
struct combo_model *s,
const struct move_model *m,
const struct utouch_frame *frame)
{
s->prop[GRAIL_PROP_PINCH_DR] = m->fm[FM_R].action_delta;
s->prop[GRAIL_PROP_PINCH_VR] = m->fm[FM_R].velocity;
s->prop[GRAIL_PROP_PINCH_R] = m->fm[FM_R].value;
s->nprop = 3;
s->nprop += gin_add_contact_props(gin, s->prop + s->nprop, frame);
}
int gru_pinch(struct grail *ge,
const struct utouch_frame *frame)
{
struct gesture_recognizer *gru = ge->gru;
struct combo_model *state = &gru->pinch;
struct move_model *move = &gru->move;
int mask = state->active ? (move->active & fm_mask) : fm_mask;
if (!move->multi && !move->single) {
if (state->active) {
gru_end(ge, state->gid, move,
state->prop, state->nprop);
state->active = 0;
}
return 0;
}
if ((move->timeout & fm_mask) == fm_mask) {
if (state->active) {
gin_gid_timeout(ge, state->gid);
}
}
if (!(move->tickle & mask))
return 0;
if (!state->active) {
int type = getype[move->ntouch];
if (!type)
return 0;
state->gid = gin_gid_begin(ge, type, PRIO_GESTURE, frame);
state->active = 1;
}
if (!(move->active & fm_mask))
return 0;
set_props(ge->gin, state, move, frame);
gru_event(ge, state->gid, move, state->prop, state->nprop);
return 1;
}
int gru_winpinch(struct grail *ge,
const struct utouch_frame *frame)
{
struct gesture_recognizer *gru = ge->gru;
struct combo_model *state = &gru->winpinch;
struct move_model *move = &gru->move;
int mask = state->active ? (move->active & fm_mask) : fm_mask;
if (!move->multi) {
if (state->active && out_of_bounds(state, move)) {
gru_end(ge, state->gid, move,
state->prop, state->nprop);
state->active = 0;
}
return 0;
}
if ((move->timeout & fm_mask) == fm_mask) {
if (state->active) {
gin_gid_timeout(ge, state->gid);
}
}
if (!(move->tickle & mask))
return 0;
if (!state->active) {
if (move->ntouch == 4) {
state->gid = gin_gid_begin(ge, GRAIL_TYPE_MPINCH,
PRIO_META, frame);
state->mintouch = 2;
state->maxtouch = 4;
state->active = 1;
} else if (move->ntouch == 3) {
state->gid = gin_gid_begin(ge, GRAIL_TYPE_EPINCH,
PRIO_ENV, frame);
state->mintouch = 2;
state->maxtouch = 3;
state->active = 1;
} else {
return 0;
}
}
if (!(move->active & fm_mask))
return 0;
set_props(ge->gin, state, move, frame);
gru_event(ge, state->gid, move, state->prop, state->nprop);
return 1;
}
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