def xfmset_cb(self, setting, value, fitsimage, info):
        # Don't do anything if we are not active
        if not self.gui_up or self.ref_image is None:
            return

        # if this is not a zoom event from the focus window then
        # don't do anything
        ## focus_fitsimage = self.fv.getfocus_fitsimage()
        ## if fitsimage != focus_fitsimage:
        ##     return
        if self._cur_opn_fitsimage is not None:
            return

        self._cur_opn_fitsimage = fitsimage
        try:
            self.transform_all_relative(fitsimage, info.chinfo)

        finally:
            self._cur_opn_fitsimage = None
Gets a single point of the cursor location if this is a cursor, otherwise
dataset/ETHPy150Open ejeschke/ginga/ginga/misc/plugins/WCSMatch.py/WCSMatch.xfmset_cb--crossover with--dataset/ETHPy150Open pyjs/pyjs/pyjswidgets/pyjamas/selection/Range.py/Range.getCursor