port.py 文件源码

def __init__(self, parent, graph, name, color, dataType, connectionPointType):
        super(BasePort, self).__init__(parent)

        self._node = parent
        self._graph = graph
        self._name = name
        self._dataType = dataType
        self._connectionPointType = connectionPointType

        self.setSizePolicy(QtWidgets.QSizePolicy(QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Fixed))

        layout = QtWidgets.QGraphicsLinearLayout()
        layout.setSpacing(0)
        layout.setContentsMargins(0, 0, 0, 0)
        self.setLayout(layout)

        self._color = color

        self._inCircle = None
        self._outCircle = None
        self._labelItem = None

        self._inCircleHolder = ItemHolder(self)
        self._outCircleHolder = ItemHolder(self)
        self._labelItemHolder = ItemHolder(self)

        self.layout().addItem(self._inCircleHolder)
        self.layout().setAlignment(self._inCircleHolder, QtCore.Qt.AlignLeft | QtCore.Qt.AlignVCenter)

        self.layout().addItem(self._labelItemHolder)
        self.layout().setAlignment(self._labelItemHolder, QtCore.Qt.AlignHCenter | QtCore.Qt.AlignVCenter)

        self.layout().addItem(self._outCircleHolder)
        self.layout().setAlignment(self._outCircleHolder, QtCore.Qt.AlignRight | QtCore.Qt.AlignVCenter)