FitWidgetMixin Range button problem.

[kolas001]

Hi,
There is a problem with the toggle range button in the FitWidgetMixin class: unckecking the range button keeps the last selected range. To fit on the complete range, you have to check the range button again and move the range cursor to the correct positions.

Here's the correction I made to avoid this problem, in the class FitWidgetMixin from guiqwt.widget.fit:

        def toggle_xrange(self, state):
                self.xrange.setVisible(state)
                plot = self.get_plot()
                plot.replot()
                if state:
                        plot.set_active_item(self.xrange)
                else: #if the button is unckeked then set to the complete range
                        self.autofit_prm.xmin = min(self.x)
                        self.autofit_prm.xmax = max(self.x)
                        self.xrange.set_range(self.autofit_prm.xmin, self.autofit_prm.xmax)
                self.show_xrange = state