Java Jslider

darabbit

Hi,

I am trying to create a project where i have a resizable cirsle using JSlider and where the color of the circle can be changed using three other JSliders, one for each colour.

I can create the resizable circle using an OvalPanel and add the other three sliders but they don't do anything!

Does anyone have any suggestions on how I could get this program to work.

Thanks,

Here is the code:

import java.awt.event.*;
import java.awt.*;
import javax.swing.*;
import javax.swing.event.*;

public class SliderDemo extends JFrame{
private JSlider diameterSlider;
private JSlider redSlider;
private JSlider blueSlider;
private JSlider greenSlider;
private OvalPanel myPanel;

ColorPanel canvas = new ColorPanel();

//set up GUI
public SliderDemo()
{
super("Slider Demo");


//set up OvalPanel
myPanel=new OvalPanel();
myPanel.setBackground(Color.WHITE);

//set up JSlider to control diameter value
diameterSlider =
new JSlider(SwingConstants.VERTICAL, 0,200,10);
diameterSlider.setMajorTickSpacing(10);
diameterSlider.setPaintTicks(true);

//set up sliders for colours
//red slider
redSlider =
new JSlider(SwingConstants.VERTICAL, 0,200,10);
diameterSlider.setMajorTickSpacing(10);
diameterSlider.setPaintTicks(true);

//blue
blueSlider =
new JSlider(SwingConstants.VERTICAL, 0,200,10);
diameterSlider.setMajorTickSpacing(10);
diameterSlider.setPaintTicks(true);

//green
greenSlider =
new JSlider(SwingConstants.VERTICAL, 0,200,10);
diameterSlider.setMajorTickSpacing(10);
diameterSlider.setPaintTicks(true);



//register JSlider event listeners
diameterSlider.addChangeListener(

new ChangeListener() { //anonymous inner class

//handle change in slider value
public void stateChanged(ChangeEvent e)
{
myPanel.setDiameter(diameterSlider.getValue() );
}

}//end anonymous inner class

);//end call to change listener
diameterSlider.addChangeListener(

new ChangeListener() {
public void stateChanged(ChangeEvent evt) {
JSlider source = (JSlider)evt.getSource();
if (source.getValueIsAdjusting() != true) {
Color current = new Color(red.getValue(), green.getValue(),
blue.getValue());
myPanel.changeColor(current);
myPanel.repaint();
}
}

//attach components to content pane
// Container container = getContentPane();
// container.add(diameterSlider, BorderLayout.WEST);
//OvalPanel.add(redSlider, BorderLayout.WEST);
//OvalPanel.add(blueSlider, BorderLayout.WEST);
//OvalPanel.add(greenSlider, BorderLayout.WEST);
//OvalPanel.add(myPanel,BorderLayout.EAST);


// setSize(650,450);
// setVisible(true);
}//end constructor SliderDemo

public static void main (String args[])
{
SliderDemo application = new SliderDemo();
application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}


}//end class SliderDemo