I was bored, so here's a test case... I can see the banding, just barely. I
suppose some monitors will make it look worse than others. In any case I think
the solution is dithering, but you will have to do it manually, simply
supplying the rendering hint
(g2.setRenderingHint(RenderingHints.KEY_DITHERING,RenderingHints.VALUE_DITHER_ENABLE);
) doesn't seem to have an effect on the behavior of GradientPaint.
[code]
/*
* Gradient.java
*
* Created on June 5, 2006, 10:29 PM
*
*/
package scott.palmer;
import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import javax.swing.JFrame;
import javax.swing.JPanel;
/**
*
* @author Scott Palmer
*/
public class Gradient extends JPanel
{
public static void main(String [] args)
{
JFrame f = new JFrame("Gradient with Banding issues");
f.setContentPane(new Gradient());
f.setSize(800,200);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
protected void paintComponent(Graphics g)
{
Graphics2D g2 = (Graphics2D) g;
g2.setPaint(new GradientPaint(
0,0,new Color(101,101,101),
getWidth(),0,new Color(130,130,130)));
g2.fillRect(0,0,getWidth(),getHeight());
}
}
[/code]
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