def __init__(self, parent):
# Inizializza Antenato
QGLWidget.__init__(self, parent)
self._zoom_factor = 1.0
self._pan_x = 0
self._pan_y = 0
self.scene = Scene()
self._drawHidden = False
customer = Entity("Customer")
self.scene.add_entity(customer)
order = Entity("Order")
order.set_drawable(True)
self.scene.add_entity(order)
age = Attribute("Age")
age.setPrimaryKey(True)
order.add_attribute(age)
anchor = Anchor()
anchor.anchor_to_rectangle(order)
bezier = Bezier()
#self.scene.add_entity(bezier)
link1 = Link(anchor, age)
order.addLink(link1)
s0 = AutomataState("S0")
s1 = AutomataState("S1")
arc = AutomataArc(s0, s1)
arc2 = AutomataArc(s0, s0)
arc3 = AutomataArc(s1, s1)
self.scene.add_entity(arc)
self.scene.add_entity(arc2)
self.scene.add_entity(arc3)
self.scene.add_entity(s0)
self.scene.add_entity(s1)
self._mid_down_x = None
self._mid_down_y = None
self._mid_up_x = None
self._mid_up_y = None
self._left_down_x = None
self._left_down_y = None
self._left_up_x = None
self._left_up_y = None
self._last_mid_down_x = None
self._last_mid_down_y = None
self._tab_down = False
self._selected_object = None
