Jslider - Button

[Aabha Varma]

Hi,

I am tryng to customise the Jslider.
How to get the slider button from Jslider.

[Michael Dunn]

look up BasicSliderUI()
override one of the thumb() methods

[Aabha Varma]

Hi,

I am using BasicSliderUI only.
I have over written some of the methods. paintThump()...etc.

But i am getting the image at 0,0 position as well as a slider button.
My intention was to set the image on to the button.


Is there any link which tells more abt how to use this Component UI, Basic slider ui...etc with some example code.

Here is the code.

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.BorderLayout;
import javax.swing.JSlider;
import java.awt.Color;
import java.awt.Graphics;
import javax.swing.plaf.ComponentUI;
import javax.swing.plaf.SliderUI;
import javax.swing.plaf.basic.BasicSliderUI;

public class test extends JFrame
{
private JPanel cJPanel1 = new JPanel();
private JSlider cJSlider1 = new JSlider();
private ImageIcon image = new ImageIcon("c:\\image1");

public test()
{
try
{
jbInit();
}
catch(Exception e)
{
e.printStackTrace();
}

}

private void jbInit() throws Exception
{
cJPanel1.add(cJSlider1, null);
cJSlider1.setBackground(cJSlider1.getParent().getBackground());

DefaltSliderUI sliderUI = new DefaltSliderUI(cJSlider1);
cJSlider1.setUI(sliderUI);

this.getContentPane().add(cJPanel1, BorderLayout.CENTER);
}


class DefaltSliderUI extends BasicSliderUI
{
private JSlider cjSlider;
public DefaltSliderUI(JSlider cJSlider1)
{
super(cJSlider1);
this.cjSlider = cJSlider1;

}
public void paintThumb (Graphics g)
{
g.drawImage(image.getImage(),0,0, null); super.paintThumbg);

}
public void scrollDueToClickInTrack()
{
super.scrollDueToClickInTrack(1);
}
public void paintTrack(Graphics g)
{
g.setColor(Color.RED);
}

public void paint(Graphics g,JSlider cjSlider)
{
super.paint(g,cjSlider);
}
}

public static void main(String[] args)
{
test test = new test();
test.setSize(500,100);
test.setVisible(true);
}
}

[Michael Dunn]

this draws an imabe as the thumb, but sliding/repainting kills it

import java.awt.*;
import javax.swing.*;
import javax.swing.plaf.basic.BasicSliderUI;
import java.net.URL;
import javax.imageio.ImageIO;
class Testing extends JFrame
{
  public Testing()
  {
    setDefaultCloseOperation(EXIT_ON_CLOSE);
    setLocation(200,100);
    JSlider slider = new JSlider(0,100,0);
    slider.setUI(new MyBasicSliderUI(slider));
    slider.setMajorTickSpacing(10);
    slider.setMinorTickSpacing(5);
    slider.setPaintTicks(true);
    slider.setPaintLabels(true);
    JPanel jp = new JPanel();
    jp.add(slider);
    getContentPane().add(slider);
    pack();
  }
  class MyBasicSliderUI extends BasicSliderUI
  {
    Image im;
    public MyBasicSliderUI(JSlider js)
    {
      super(js);
    }
    public void paintThumb(Graphics g)
    {
      try
      {
        URL url = new URL(getClass().getResource("Test.gif"), "Test.gif");
        im = ImageIO.read(url);
      }
      catch(Exception e){e.printStackTrace();}
      Rectangle thumb = thumbRect;
      g.drawImage(im,thumb.x,thumb.y,null);
    }
  }
  public static void main(String[] args){new Testing().setVisible(true);}
}

[Aabha Varma]

Thanks Michael.

Its working perfectly.