def onmove(self, ev):
if self.eventpress is None or self.ignore(ev):
return
if self.fixedSize and self.prevEvents:
# Panning mode. Modify the existing ROI. Do the shift.
ev.xdata += self.wdata
ev.ydata += self.hdata
self.eventpress.xdata = ev.xdata - 2 * self.wdata
self.eventpress.ydata = ev.ydata - 2 * self.hdata
RectangleSelector.onmove(self, ev)
