class ImageElement(QtGui.QGraphicsPixmapItem):
    def __init__(self, pixmap, parent = None, scene = None, img_name=None):
        QtGui.QGraphicsPixmapItem.__init__(self, pixmap, parent, scene)
#-----------------------------------------------
        self.img_name = img_name
        self.setTransformationMode(QtCore.Qt.SmoothTransformation) 
        self.setCursor(QtCore.Qt.PointingHandCursor) 
        self.setFlag(QtGui.QGraphicsItem.ItemIsMovable)

paintEvent()

class ImageElement(QtGui.QGraphicsPixmapItem):
    def __init__(self, pixmap, parent = None, scene = None, img_name=None):
        QtGui.QGraphicsPixmapItem.__init__(self, pixmap, parent, scene)
#-----------------------------------------------
        self.img_name = img_name
        self.setTransformationMode(QtCore.Qt.SmoothTransformation) 
        self.setCursor(QtCore.Qt.PointingHandCursor) 
        self.setFlag(QtGui.QGraphicsItem.ItemIsMovable)
        print self.img_name
        self.text = "3"
    def mousePressEvent(self, event):
        if event.buttons() & QtCore.Qt.LeftButton:
            pass
            #self.setOpacity(0.0)
            print self.pos()
    def paintEvent(self, event):
        painter = QtGui.QPainter()
        painter.begin(self)
        # Здесь nроизводим рисование на компоненте
        paint.setPen(QtGui.QColor(168, 34, 3))
        paint.setFont(QtGui.QFont('Decorative', 10))
        paint.drawText(event.rect(), QtCore.Qt.AlignCenter, self.text)
        painter.end()