node.py 文件源码

def __init__(self, text, parent=None):
        super(NodeHeader, self).__init__(parent)

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

        layout = QtWidgets.QGraphicsLinearLayout()
        layout.setContentsMargins(0, 0, 0, 0)
        layout.setSpacing(3)
        layout.setOrientation(QtCore.Qt.Horizontal)
        self.setLayout(layout)

        self._titleWidget = NodeTitle(text, self)
        layout.addItem(self._titleWidget)
        layout.setAlignment(self._titleWidget, QtCore.Qt.AlignCenter | QtCore.Qt.AlignTop)