def __init__(self, parent, gsize, vflags=1, *args, **kw):
super(AtGraphicsView, self).__init__(parent, *args, **kw)
self._items = dict()
self.gsize = gsize
self._grid = ItemGrid(self.gsize)
self._hdf = None
self.vflags = vflags
scene = AtGraphicsScene()
scene.setBackgroundBrush(QtCore.Qt.darkGray)
self.setScene(scene)
self.createActions()
self.createContextMenu()
