Using MouseClick Event on Line Chart Graph

[civi]

I´m working on Line Chart Graph in JApplet.

I would like to open a Menu when clicking on a line point of ChartPanel

I try the following:

Code: Select all

class ChartApplet extends JApplet { ....
chartPanel.addChartMouseListener(New TestClass());
....

public class TestClass implements ChartMouseListener {


public void chartMouseClicked(ChartMouseEvent arg0) {

//I can use:

arg0.getChart()...
arg0.getEntity()...
arg0.getSource()..
arg0.getTrigger()..

}

but these methods doesn´t work since XYSeries Object it not recognize when the mouse click on line Graph

Can anybody help me to developer an Event that start up when clicking exactly on a Line Graph of ChartPanel? The above method mouseClicked of interface ChartMouseListener works when click in ALL Point of ChartPanel.

Please help me! its very important for me.

Best Regards

Cividanes

[civi]

for example:

Code: Select all

public void chartMouseMoved(ChartMouseEvent event) {
    //put your handling code here to handle mouse movement events
        ChartEntity entity = event.getEntity();
        //the above line will get the entity that is below the mouse.
       
        if ((entity instanceof XYItemEntity)) {
    //now we check what type of entity it is.
    //in my case im just checking if the mouse is over
    //any Datapoint on my chart. but you should be
    //able to extend this to any type of chart entity
            XYItemEntity ent = (XYItemEntity) entity;
            serindex = ent.getSeriesIndex();
            itemindex = ent.getItem();
    //now we actually have the series and item index of the data value
    //being pointed to by the mouse.
    //in a category chart you would get the series key and category key etc
    //now you may get the data from your dataset using these indexes
    //and do some processing:
            lblDisplay.setText("at x = "
                                        + mydata.getXValue(serindex,itemindex)
                                        + "  the value of y is : "
                                        + mydata.getYValue(serindex,itemindex));
        } //end if
    }

this above code line get XYSeries just if a click XYItemEntity (items of line graph), i need get when clicking just on line graph.

Please, Anybody could help me ?

Best Regards

Cividanes