widgets.py 文件源码

def __init__(self, scene, parent):
        super().__init__(scene, parent)

        self.setAlignment(Qt.AlignLeft | Qt.AlignTop)
        self.setDragMode(QtWidgets.QGraphicsView.RubberBandDrag)
        self.setMouseTracking(True)
        self.YScrollBar = QtWidgets.QScrollBar(Qt.Vertical, parent)
        self.XScrollBar = QtWidgets.QScrollBar(Qt.Horizontal, parent)
        self.setVerticalScrollBar(self.YScrollBar)
        self.setHorizontalScrollBar(self.XScrollBar)

        self.currentobj = None

        self.setRenderHints(QtGui.QPainter.Antialiasing | QtGui.QPainter.SmoothPixmapTransform)