Fill shape with 2 solid colors

Question

Hi,
I was wondering if there is an easy way to fill a roundRectangle2D with 2 solid colors. For example that 1/3 is blue and the other 2/3 is green? I've looked in the java graphics2D api but can't find anything. GradientPaint isn't what I'm looking for, so is there any other easy option.
Or is it the hard way and you need to draw several shapes on top of each other?
class EventPanel extends JComponent{
    @Override
    protected void paintComponent(Graphics g){
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D) g.create();
        Double widthRect = (double) this.getWidth();
        Double heightRect = (double) this.getHeight();
        Double arc = widthRect / 20.0;
        Float strokeSize = 1.0f;
        Double offset = strokeSize / 2.0;
        Double adj = offset * 2;
        RoundRectangle2D.Double roundRect = new RoundRectangle2D.Double(offset, offset, widthRect - adj, heightRect - adj, arc, arc);
        RenderingHints rh = new RenderingHints(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
        g2.setRenderingHints(rh);
        g2.setPaint(new Color(30, 144, 255, 80));
        g2.fill(roundRect);
        g2.setPaint(Color.BLACK);
        g2.setStroke(new BasicStroke(strokeSize));
        g2.draw(roundRect);
        g2.dispose();
    }Similar to this: Example Don't mind the quality. Not good at art.
Edited by: Kligham on 26-aug-2010 22:55
Edited by: Kligham on 26-aug-2010 22:58
Edited by: Kligham on 26-aug-2010 23:01

Answer 1

Or is it the hard way and you need to draw several shapes on top of each other?What's so hard about that? But if you're looking for an alternative approach, you can do it with Graphicd$setClip(...)
GradientPaint isn't what I'm looking forWhat about LinearGradientPaint?import java.awt.*;
import javax.swing.*;
public class StepGradientPaint {
  float[] fractions = {0F, 0.5F, 0.50001F, 1F};
  Color[] colors = {Color.RED, Color.RED, Color.GREEN, Color.GREEN};
  Paint paint = new LinearGradientPaint(0F, 0F, 200F, 0F, fractions, colors);
  public static void main(String[] args) {
    SwingUtilities.invokeLater(new Runnable() {
      @Override
      public void run() {
        new StepGradientPaint().makeUI();
  public void makeUI() {
    JPanel panel = new JPanel() {
      @Override
      protected void paintComponent(Graphics g) {
        super.paintComponent(g);
        Graphics2D g2 = (Graphics2D) g.create();
        g2.setPaint(paint);
        g2.fillRect(0, 0, getWidth(), getHeight());
        g2.dispose();
    panel.setPreferredSize(new Dimension(200, 200));
    JFrame frame = new JFrame();
    frame.add(panel);
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    frame.pack();
    frame.setLocationRelativeTo(null);
    frame.setVisible(true);
}db