Question

How do I stop JFreechart from unzooming when I drag left?

thxs.

Answer 1

I made an assumption (based on your short question) that you want to disable the “zoom restore” feature when invoked by the mouse being dragged to the left.

If so, you simply need to override the restoreAutobounds() method like this:

JFreeChart chart = /* create your chart here*/

// add the chart to the panel and override 
// the zoom restore behavior

chartPanel = new ChartPanel(chart){

    @Override
    public void restoreAutoBounds(){
        // Do nothing
    }           
};

Or, event better is to extend the ChartPanel object and override it there.

NOTE: the zoom out feature will still be available from the context menu of the chart so the user still has meaningful ways to zoom out