J2SE2-Swing Manipulation(Panel)-Netbeans and Eclipse

Kita lanjutin neh untuk buat panel gradien. Untuk membuat panel gradien seperti komponen yang laennya, kita hanya memanipulasi komponen panel. Kan kurang asyik tuh tampilan panel standart-standart aje...
Ini die scripTnye....(lo pengen bisa,jangan dicopy paste tapi diketik m dipahami...oke???)...GOOD LUCK...


/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
 */
package Template;

//~--- JDK imports ------------------------------------------------------------

import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.RenderingHints;
import java.awt.geom.GeneralPath;
import java.awt.image.BufferedImage;

import javax.swing.JPanel;

/**
 *
 * @author United
 */
public class PaneBiruHitam extends JPanel {
    private static final long serialVersionUID = -1;
    private BufferedImage     gradientImage;



    /**
     * membuat panel black BLUe baru
     */
    public PaneBiruHitam() {
        super();
    }

    @Override
    protected void paintComponent(Graphics g) {
        super.paintComponent(g);

        if (isOpaque()) {
            Graphics2D g2 = (Graphics2D) g.create();

            g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
            setUpGradient();
            g2.drawImage(gradientImage, 0, 0, getWidth(), getHeight(), null);

    /**
     *menyesuaikan ukuran dengan panel asli
     */
            int           width  = getWidth();
            int           height = getHeight() * 5 / 100;
            Color         light  = new Color(1F, 1F, 1F, 0.5F);
            Color         dark   = new Color(1F, 1F, 1F, 0.0F);
            GradientPaint paint  = new GradientPaint(0, 0, light, 0, height, dark);
            GeneralPath   path   = new GeneralPath();

            path.moveTo(0, 0);
            path.lineTo(0, height);
            path.curveTo(0, height, width / 2, height / 2, width, height);
            path.lineTo(width, 0);
            path.closePath();
            g2.setPaint(paint);
            g2.fill(path);
            paint = new GradientPaint(0, getHeight(), light, 0, getHeight() - height, dark);
            path  = new GeneralPath();
            path.moveTo(0, getHeight());
            path.lineTo(0, getHeight() - height);
            path.curveTo(0, getHeight() - height, width / 2, getHeight() - height / 2, width, getHeight() - height);
            path.lineTo(width, getHeight());
            path.closePath();
            g2.setPaint(paint);
            g2.fill(path);
            g2.dispose();
        }
    }

    /**
     * membuat gambar background gradient
     */
    private void setUpGradient() {
        gradientImage = new BufferedImage(1, getHeight(), BufferedImage.TYPE_INT_ARGB);

        Graphics2D g2 = (Graphics2D) gradientImage.getGraphics();

        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);

        GradientPaint paint = new GradientPaint(0, 0, Color.BLACK, 0, getHeight(), Color.BLUE);

        g2.setPaint(paint);
        g2.fillRect(0, 0, 1, getHeight());
        g2.dispose();
    }
}


neeh hasilnya:

Sumber: Buku Prentice.Hall.Filthy.Rich.Clients.Aug.2007