connection.py 文件源码

def __init__(self, graph, srcPortCircle, dstPortCircle):
        super(Connection, self).__init__()

        self.__graph = graph
        self.__srcPortCircle = srcPortCircle
        self.__dstPortCircle = dstPortCircle
        penStyle = QtCore.Qt.DashLine

        self.__connectionColor = QtGui.QColor(0, 0, 0)
        self.__connectionColor.setRgbF(*self.__srcPortCircle.getColor().getRgbF())
        self.__connectionColor.setAlpha(125)

        self.__defaultPen = QtGui.QPen(QtGui.QColor("#A7A7A7"), 1.5)

        self.__connectionHoverColor = QtGui.QColor(0, 0, 0)
        self.__connectionHoverColor.setRgbF(*self.__srcPortCircle.getColor().getRgbF())
        self.__connectionHoverColor.setAlpha(255)

        self.__hoverPen = QtGui.QPen(self.__connectionHoverColor, 1.5)

        self.setPen(self.__defaultPen)
        self.setZValue(-1)

        self.setAcceptHoverEvents(True)
        self.connect()