Method update_offset

lib/matplotlib/offsetbox.py:1686–1689

(self, dx, dy)

        self.ox, self.oy = ann.get_transform().transform(ann.xyann)

    def update_offset(self, dx, dy):
        ann = self.annotation
        ann.xyann = ann.get_transform().inverted().transform(
            (self.ox + dx, self.oy + dy))