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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/>.
*
****************************************************************************/
#include "grail-recognizer.h"
#include <math.h>
#include <stdio.h>
static const int getype[DIM_TOUCH + 1] = {
-1,
GRAIL_TYPE_DRAG1,
GRAIL_TYPE_DRAG2,
GRAIL_TYPE_DRAG3,
GRAIL_TYPE_DRAG4,
GRAIL_TYPE_DRAG5,
};
static void set_props(struct combo_model *s, const struct move_model *m)
{
if (m->single) {
s->prop[GRAIL_PROP_DRAG_DX] = m->fm[FM_X].raw_delta;
s->prop[GRAIL_PROP_DRAG_DY] = m->fm[FM_Y].raw_delta;
} else {
s->prop[GRAIL_PROP_DRAG_DX] = m->fm[FM_X].action_delta;
s->prop[GRAIL_PROP_DRAG_DY] = m->fm[FM_Y].action_delta;
}
s->prop[GRAIL_PROP_DRAG_VX] = m->fm[FM_X].velocity;
s->prop[GRAIL_PROP_DRAG_VY] = m->fm[FM_Y].velocity;
s->prop[GRAIL_PROP_DRAG_X] = m->fm[FM_X].value;
s->prop[GRAIL_PROP_DRAG_Y] = m->fm[FM_Y].value;
s->nprop = 6;
}
static const int fm_mask = 0x03;
int gru_drag(struct grail *ge,
const struct touch_frame *frame)
{
struct gesture_recognizer *gru = ge->gru;
struct combo_model *state = &gru->drag;
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->tickle & mask))
return 0;
if (!state->active) {
int type = getype[move->ntouch];
if (type < 0)
return 0;
state->gid = gin_gid_begin(ge, type, PRIO_GESTURE, frame);
state->active = 1;
}
if (!move->single && !(move->active & fm_mask))
return 0;
set_props(state, move);
gru_event(ge, state->gid, move, state->prop, state->nprop);
return 1;
}
int gru_windrag(struct grail *ge,
const struct touch_frame *frame)
{
struct gesture_recognizer *gru = ge->gru;
struct combo_model *state = &gru->windrag;
struct move_model *move = &gru->move;
int mask = state->active ? (move->active & fm_mask) : fm_mask;
if (!move->multi && !move->single) {
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->tickle & mask))
return 0;
if (!state->active) {
if (move->ntouch == 4) {
state->gid = gin_gid_begin(ge, GRAIL_TYPE_MDRAG,
PRIO_META, frame);
state->mintouch = 1;
state->maxtouch = 4;
state->active = 1;
} else if (move->ntouch == 3) {
state->gid = gin_gid_begin(ge, GRAIL_TYPE_EDRAG,
PRIO_ENV, frame);
state->mintouch = 1;
state->maxtouch = 3;
state->active = 1;
} else {
return 0;
}
}
if (!move->single && !(move->active & fm_mask))
return 0;
set_props(state, move);
gru_event(ge, state->gid, move, state->prop, state->nprop);
return 1;
}
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