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#include "efl_gesture_private.h"
#define MY_CLASS EFL_GESTURE_TOUCH_CLASS
typedef struct _Pointer_Data
{
struct
{
Eina_Vector2 pos;
double timestamp;
} start, prev, cur;
Efl_Pointer_Action action;
} Pointer_Data;
typedef struct _Efl_Gesture_Touch_Data
{
Efl_Gesture_Touch_State state;
Eina_Hash *touch_points;
int touch_down;
Eina_Bool multi_touch;
Eo *target;
} Efl_Gesture_Touch_Data;
// This event object accumulates all the touch points
// that are directed to a particular object from the
// first finger down to the last finger up
static void _hash_free_cb(Pointer_Data *point)
{
free(point);
}
static inline void
_touch_points_reset(Efl_Gesture_Touch_Data *pd)
{
eina_hash_free(pd->touch_points);
pd->touch_points = eina_hash_int32_new(EINA_FREE_CB(_hash_free_cb));
pd->touch_down = 0;
pd->state = EFL_GESTURE_TOUCH_UNKNOWN;
}
EOLIAN static Efl_Object *
_efl_gesture_touch_efl_object_constructor(Eo *obj, Efl_Gesture_Touch_Data *pd)
{
obj = efl_constructor(efl_super(obj, MY_CLASS));
_touch_points_reset(pd);
return obj;
}
EOLIAN static void
_efl_gesture_touch_efl_object_destructor(Eo *obj, Efl_Gesture_Touch_Data *pd)
{
eina_hash_free(pd->touch_points);
efl_destructor(efl_super(obj, MY_CLASS));
}
EOLIAN static Efl_Gesture_Touch_State
_efl_gesture_touch_state_get(Eo *obj EINA_UNUSED, Efl_Gesture_Touch_Data *pd)
{
return pd->state;
}
EOLIAN static void
_efl_gesture_touch_point_record(Eo *obj EINA_UNUSED, Efl_Gesture_Touch_Data *pd,
int id, Eina_Vector2 pos, double timestamp, Efl_Pointer_Action action)
{
Pointer_Data *point = eina_hash_find(pd->touch_points, &id);
if (action == EFL_POINTER_ACTION_DOWN)
pd->touch_down++;
else if ((action == EFL_POINTER_ACTION_UP) ||
(action == EFL_POINTER_ACTION_CANCEL))
pd->touch_down--;
EINA_SAFETY_ON_FALSE_GOTO(pd->touch_down >= 0, bad_fingers);
if (point)
{
// the point already exists. update the cur and prev point
point->prev = point->cur;
point->cur.pos = pos;
point->cur.timestamp = timestamp;
}
else
{
// new finger
if (!id && (action != EFL_POINTER_ACTION_DOWN))
{
// discard any other event
return;
}
point = calloc(1, sizeof(Pointer_Data));
if (!point) return;
point->start.pos = point->prev.pos = point->cur.pos = pos;
point->start.timestamp = point->prev.timestamp = point->cur.timestamp = timestamp;
// add to the hash
eina_hash_add(pd->touch_points, &id, point);
// FIXME: finger_list was broken
if (id)
pd->multi_touch = EINA_TRUE;
}
point->action = action;
if (!id && (action == EFL_POINTER_ACTION_DOWN))
{
pd->state = EFL_GESTURE_TOUCH_BEGIN;
}
else if ((action == EFL_POINTER_ACTION_UP) && (pd->touch_down == 0))
{
pd->state = EFL_GESTURE_TOUCH_END;
}
else
{
pd->state = EFL_GESTURE_TOUCH_UPDATE;
}
return;
bad_fingers:
ERR("Inconsistent touch events received!");
_touch_points_reset(pd);
}
EOLIAN static Eina_Bool
_efl_gesture_touch_multi_touch_get(Eo *obj EINA_UNUSED, Efl_Gesture_Touch_Data *pd)
{
return pd->multi_touch;
}
EOLIAN static Eina_Vector2
_efl_gesture_touch_start_point_get(Eo *obj EINA_UNUSED, Efl_Gesture_Touch_Data *pd)
{
int tool = 0;
Pointer_Data *point = eina_hash_find(pd->touch_points, &tool);
Eina_Vector2 vec = { 0, 0 };
if (!point)
return vec;
return point->start.pos;
}
EOLIAN static Eina_Vector2
_efl_gesture_touch_delta(const Eo *obj EINA_UNUSED, Efl_Gesture_Touch_Data *pd, int tool)
{
Pointer_Data *point = eina_hash_find(pd->touch_points, &tool);
Eina_Vector2 vec = { 0, 0 };
if (!point)
return vec;
eina_vector2_subtract(&vec, &point->cur.pos, &point->prev.pos);
return vec;
}
EOLIAN static Eina_Vector2
_efl_gesture_touch_distance(const Eo *obj EINA_UNUSED, Efl_Gesture_Touch_Data *pd, int tool)
{
Pointer_Data *point = eina_hash_find(pd->touch_points, &tool);
Eina_Vector2 vec = { 0, 0 };
if (!point)
return vec;
eina_vector2_subtract(&vec, &point->cur.pos, &point->start.pos);
return vec;
}
#include "efl_gesture_touch.eo.c"
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