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#include "efl_canvas_gesture_private.h"
#define MY_CLASS EFL_CANVAS_GESTURE_TOUCH_CLASS
//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 inline void
_touch_points_reset(Efl_Canvas_Gesture_Touch_Data *pd)
{
while (eina_array_count(pd->touch_points))
free(eina_array_pop(pd->touch_points));
pd->touch_down = 0;
pd->prev_touch = pd->cur_touch = NULL;
pd->state = EFL_GESTURE_TOUCH_STATE_UNKNOWN;
}
EOLIAN static Efl_Object *
_efl_canvas_gesture_touch_efl_object_constructor(Eo *obj, Efl_Canvas_Gesture_Touch_Data *pd)
{
pd->touch_points = eina_array_new(2);
EINA_SAFETY_ON_NULL_RETURN_VAL(pd->touch_points, NULL);
return efl_constructor(efl_super(obj, MY_CLASS));
}
EOLIAN static void
_efl_canvas_gesture_touch_efl_object_destructor(Eo *obj, Efl_Canvas_Gesture_Touch_Data *pd)
{
while (eina_array_count(pd->touch_points))
free(eina_array_pop(pd->touch_points));
eina_array_free(pd->touch_points);
efl_destructor(efl_super(obj, MY_CLASS));
}
EOLIAN static Efl_Canvas_Gesture_Touch_State
_efl_canvas_gesture_touch_state_get(const Eo *obj EINA_UNUSED, Efl_Canvas_Gesture_Touch_Data *pd)
{
return pd->state;
}
EOLIAN static void
_efl_canvas_gesture_touch_point_record(Eo *obj EINA_UNUSED, Efl_Canvas_Gesture_Touch_Data *pd, Efl_Input_Pointer *event)
{
Efl_Input_Pointer_Data *pointer_data = efl_data_scope_get(event, EFL_INPUT_POINTER_CLASS);
int id = pointer_data->touch_id;
int timestamp = pointer_data->timestamp;
Efl_Pointer_Action action = pointer_data->action;
Eina_Vector2 pos = pointer_data->cur;
Eina_Position2D _pos = { pos.x, pos.y };
Efl_Gesture_Touch_Point_Data *point = NULL;
if (eina_array_count(pd->touch_points) >= (unsigned int)id + 1)
point = eina_array_data_get(pd->touch_points, id);
if (action == EFL_POINTER_ACTION_DOWN)
{
if ((!point) || (!point->cur.pressed))
pd->touch_down++;
}
else if ((action == EFL_POINTER_ACTION_UP) ||
(action == EFL_POINTER_ACTION_CANCEL))
{
if (point && point->cur.pressed)
pd->touch_down--;
}
if (pd->touch_down < 0) goto finished_touch;
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 (action != EFL_POINTER_ACTION_DOWN)
{
//Discard any other event
return;
}
point = calloc(1, sizeof(Efl_Gesture_Touch_Point_Data));
if (!point) return;
point->start.pos = point->prev.pos = point->cur.pos = _pos;
point->start.timestamp = point->prev.timestamp = point->cur.timestamp = timestamp;
point->id = id;
eina_array_push(pd->touch_points, point);
}
if (pd->cur_touch != point)
pd->prev_touch = pd->cur_touch;
pd->cur_touch = point;
point->action = action;
if (action == EFL_POINTER_ACTION_DOWN)
{
point->cur.pressed = EINA_TRUE;
if (!id)
pd->state = EFL_GESTURE_TOUCH_STATE_BEGIN;
else
pd->state = EFL_GESTURE_TOUCH_STATE_UPDATE;
}
else if (action == EFL_POINTER_ACTION_UP)
{
point->cur.pressed = EINA_FALSE;
pd->state = EFL_GESTURE_TOUCH_STATE_END;
}
else
{
pd->state = EFL_GESTURE_TOUCH_STATE_UPDATE;
}
return;
finished_touch:
_touch_points_reset(pd);
}
EOLIAN static unsigned int
_efl_canvas_gesture_touch_touch_points_count_get(const Eo *obj EINA_UNUSED, Efl_Canvas_Gesture_Touch_Data *pd)
{
return pd->touch_down;
}
EOLIAN static const Efl_Gesture_Touch_Point_Data *
_efl_canvas_gesture_touch_current_data_get(const Eo *obj EINA_UNUSED, Efl_Canvas_Gesture_Touch_Data *pd)
{
return pd->cur_touch;
}
EOLIAN static const Efl_Gesture_Touch_Point_Data *
_efl_canvas_gesture_touch_previous_data_get(const Eo *obj EINA_UNUSED, Efl_Canvas_Gesture_Touch_Data *pd)
{
return pd->prev_touch;
}
EOLIAN static const Efl_Gesture_Touch_Point_Data *
_efl_canvas_gesture_touch_data_get(const Eo *obj EINA_UNUSED, Efl_Canvas_Gesture_Touch_Data *pd, unsigned int id)
{
return eina_array_count(pd->touch_points) >= id + 1 ? eina_array_data_get(pd->touch_points, id) : NULL;
}
EOLIAN static Eina_Position2D
_efl_canvas_gesture_touch_start_point_get(const Eo *obj EINA_UNUSED, Efl_Canvas_Gesture_Touch_Data *pd EINA_UNUSED)
{
const Efl_Gesture_Touch_Point_Data *point = efl_gesture_touch_data_get(obj, 0);
Eina_Position2D vec = { 0, 0 };
if (!point)
return vec;
return point->start.pos;
}
EOLIAN static Eina_Position2D
_efl_canvas_gesture_touch_current_point_get(const Eo *obj EINA_UNUSED, Efl_Canvas_Gesture_Touch_Data *pd)
{
const Efl_Gesture_Touch_Point_Data *point = pd->cur_touch;
Eina_Position2D vec = { 0, 0 };
if (!point)
return vec;
return point->cur.pos;
}
EOLIAN static unsigned int
_efl_canvas_gesture_touch_current_timestamp_get(const Eo *obj EINA_UNUSED, Efl_Canvas_Gesture_Touch_Data *pd)
{
const Efl_Gesture_Touch_Point_Data *point = pd->cur_touch;
if (!point)
return 0;
return point->cur.timestamp;
}
EOLIAN static Eina_Vector2
_efl_canvas_gesture_touch_delta(const Eo *obj EINA_UNUSED, Efl_Canvas_Gesture_Touch_Data *pd, int tool)
{
Efl_Gesture_Touch_Point_Data *point = eina_array_count(pd->touch_points) >= (unsigned)tool + 1 ? eina_array_data_get(pd->touch_points, tool) : NULL;
Eina_Vector2 vec = { 0, 0 };
EINA_SAFETY_ON_NULL_RETURN_VAL(point, vec);
Eina_Vector2 v1 = { point->cur.pos.x, point->cur.pos.y };
Eina_Vector2 v2 = { point->prev.pos.x, point->prev.pos.y };
eina_vector2_subtract(&vec, &v1, &v2);
return vec;
}
EOLIAN static Eina_Vector2
_efl_canvas_gesture_touch_distance(const Eo *obj EINA_UNUSED, Efl_Canvas_Gesture_Touch_Data *pd, int tool)
{
Efl_Gesture_Touch_Point_Data *point = eina_array_count(pd->touch_points) >= (unsigned)tool + 1 ? eina_array_data_get(pd->touch_points, tool) : NULL;
Eina_Vector2 vec = { 0, 0 };
EINA_SAFETY_ON_NULL_RETURN_VAL(point, vec);
Eina_Vector2 v1 = { point->cur.pos.x, point->cur.pos.y };
Eina_Vector2 v2 = { point->start.pos.x, point->start.pos.y };
eina_vector2_subtract(&vec, &v1, &v2);
return vec;
}
#include "efl_canvas_gesture_touch.eo.c"
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