overlapping components

[anusha88]

hi,i have a unique problem.actually i wish to put a polarchart developed using JFreechart on the frame that already has components placed on it.What i want to do is to make the particular component overlap the polarchart.

How can i do so?
i thought of creating the polar chart using panel and then placing the above mentioned component on the panel therby placing the entire panel on the Jframe.

[sincerelibran]

Do you want to see both of them at the same time or one at a time?

[anusha88]

Do you want to see both of them at the same time or one at a time?

both at the same time

[kvprajapati]

anusha88,

Create two panels - one for chart and another for other components.

[anusha88]

i tried doing that but at a time only one component is visible.I want to place the component object exactly in the centre of the chart.

but just the chart appears.

here's the code snippet

JPanel mainpanel=new JPanel();
	final JPanel main = new JPanel(new BorderLayout());
        final JPanel optionsPanel = new JPanel();
 	cirarc12 c2=new cirarc12();//the component neede to be place don the top
optionsPanel.add(c2,BorderLayout.CENTER);
	main.add(chartPanel, BorderLayout.CENTER);
        //main.add(c2,BorderLayout.CENTER);
     	mainpanel.add(main);
	mainpanel.add(optionsPanel,BorderLayout.CENTER);

I think i'm going wrong with the layout managers.please help..

[kvprajapati]

Use NORTH attribute.

mainpanel.add(main,BorderLayout.NORTH);
mainpanel.add(optionsPanel,BorderLayout.CENTER);

[JamesCherrill]

call setOpaque(false) on everything that you need to see through

[anusha88]

Use NORTH attribute.

mainpanel.add(main,BorderLayout.NORTH);
mainpanel.add(optionsPanel,BorderLayout.CENTER);

Doing that is still not working...i can only see the chart....may be i shouldn't be using BorderLayout here.

[kvprajapati]

I am unable to help with that code posted at #5. I have a sample program.

import java.awt.*;
import java.awt.Graphics;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;

import javax.swing.*;

import org.jfree.chart.ChartFactory;
import org.jfree.chart.JFreeChart;
import org.jfree.data.general.DefaultPieDataset;


public class Best extends JFrame{
    JPanel top=new JPanel();
    JPanel cen=new JPanel();
    public Best(){
          top.add(new JButton("Add"));
          top.add(new JButton("Add"));
          top.add(new JButton("Add"));
          getContentPane().add(top,BorderLayout.NORTH); 
          getContentPane().add(cen,BorderLayout.CENTER); 
          
          setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
          setSize(400,400);
          setVisible(true);
    }

    public void run() {
        // create a dataset...
        final DefaultPieDataset data = new DefaultPieDataset();
        data.setValue("One", new Double(10.3));
        data.setValue("Two", new Double(8.5));
        data.setValue("Three", new Double(3.9));
        data.setValue("Four", new Double(3.9));
        data.setValue("Five", new Double(3.9));
        data.setValue("Six", new Double(3.9));

        // create a pie chart...
        final boolean withLegend = true;
        final JFreeChart chart = ChartFactory.createPieChart(
            "Testing", 
            data, 
            withLegend,
            true,
            false
        );
 
        final Graphics2D g2 = (Graphics2D) cen.getGraphics();
        final Rectangle2D chartArea = new Rectangle2D.Double(0, 0, 400, 300);
        
        chart.draw(g2, chartArea, null, null);
    }
 
    public static void main(String[] args) {
        Best app = new Best();
        app.run();
    }
}