svgviewer.py 文件源码

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

        self.renderer = SvgView.Native
        self.svgItem = None
        self.backgroundItem = None
        self.outlineItem = None
        self.image = QImage()

        self.setScene(QGraphicsScene(self))
        self.setTransformationAnchor(QGraphicsView.AnchorUnderMouse)
        self.setDragMode(QGraphicsView.ScrollHandDrag)
        self.setViewportUpdateMode(QGraphicsView.FullViewportUpdate)

        # Prepare background check-board pattern.
        tilePixmap = QPixmap(64, 64)
        tilePixmap.fill(Qt.white)
        tilePainter = QPainter(tilePixmap)
        color = QColor(220, 220, 220)
        tilePainter.fillRect(0, 0, 32, 32, color)
        tilePainter.fillRect(32, 32, 32, 32, color)
        tilePainter.end()

        self.setBackgroundBrush(QBrush(tilePixmap))