transformations.py 文件源码

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

        newFont = self.font()
        newFont.setPixelSize(12)
        self.setFont(newFont)

        fontMetrics = QFontMetrics(newFont)
        self.xBoundingRect = fontMetrics.boundingRect("x")
        self.yBoundingRect = fontMetrics.boundingRect("y")
        self.shape = QPainterPath()
        self.operations = []