def __init__(self, parent=None):
QtGui.QGraphicsView.__init__(self, parent)
self.parent = parent
# topologyInterface exchanges json messages with monitoring server
self.topologyInterface = TopologyInterface(self)
self.topologyInterface.start()
#asyncore.loop()
self.setStyleSheet("background: black")
self.topoScene = QtGui.QGraphicsScene(self)
self.topoScene.setItemIndexMethod(QtGui.QGraphicsScene.NoIndex)
self.topoScene.setSceneRect(-300, -300, 600, 600)
self.setScene(self.topoScene)
self.setCacheMode(QtGui.QGraphicsView.CacheBackground)
self.setRenderHint(QtGui.QPainter.Antialiasing)
self.setTransformationAnchor(QtGui.QGraphicsView.AnchorUnderMouse)
self.setResizeAnchor(QtGui.QGraphicsView.AnchorViewCenter)
self.drawAccess = 'Default' #(utilization/te/et/etc)
self.scale(0.9, 0.9)
self.setMinimumSize(400, 400)
# Pan
self.setDragMode(self.ScrollHandDrag)
self.setCursor(QtCore.Qt.ArrowCursor)
# Connect signals to slots
self.topologyInterface.topology_received_signal[str].connect \
(self.got_topo_msg)
self.updateAllSignal.connect(self.updateAll)
# Dictionaries holding node and link QGraphicsItems
self.nodes = {}
self.links = {}
# Get an initial current snapshot of the topology
self.get_topology()
# Subscribe to LAVI for topology changes
self.subscribe_to_topo_changes()
