Manipulasi JButton (Membuat Tombol Keren)

Masih seperti yang lalu-lalu, tentang belajar memanipulasi komponen Swing. Nah, kalau kemarin 3 seri telah kita pelajar bersama tentang belajar memanipulasi JPanel. Saat ini kita coba untuk mengubek-ubek JButton. Masih seperti Jpanel, JButton pun memanfaatkan Overide PaintComponent dan Graphic2D untuk melakukan manipulasi. Berikut ini contoh hasilnya :

Sedangkan untuk sourcecode atau kode programnya dapat kita perhatikan baris demi baris berikut ini :

/*
 * Pokoknya OpenSource aja dech.... gratis untuk dikembangkan
 * Kalau ada salah, mohon dikonfirmasi, kalau ada kerusakan akibat
 * Sourcecode ini ya... mo gimana lagi... tanggung sendiri aja dech...
 */
package tampilan.button;

import java.awt.Color;
import java.awt.GradientPaint;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Paint;
import java.awt.Shape;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.geom.RoundRectangle2D;
import javax.swing.JButton;

/**
 *
 * @author afa al farazi
 */
public class ButtonGradient extends JButton {

    private Paint paint;
    private Shape shape;
    private Paint glass;
    private Paint glass2;
    private boolean over;
    private boolean tekan;

    public ButtonGradient() {
        setOpaque(false);
        setFocusPainted(false);
        setContentAreaFilled(false);
        setBorderPainted(false);

        //Menambahkan mouse listener
        addMouseListener(new MouseAdapter() {

            //saat mouse di atas button
            @Override
            public void mouseEntered(MouseEvent e) {
                setOver(true);
            }

            //saat mouse di luar button
            @Override
            public void mouseExited(MouseEvent e) {
                setOver(false);
            }

            @Override
            public void mousePressed(MouseEvent e) {
                setTekan(true);
            }

            @Override
            public void mouseReleased(MouseEvent e) {
                setTekan(false);
            }
        });

    }

    public boolean isOver() {
        return over;
    }

    public void setOver(boolean over) {
        this.over = over;
        repaint();
    }

    public boolean isTekan() {
        return tekan;
    }

    public void setTekan(boolean tekan) {
        this.tekan = tekan;
        repaint();
    }

    @Override
    protected void paintComponent(Graphics g) {
        Graphics2D gd = (Graphics2D) g.create();
        paint = new GradientPaint(0, 0, Color.BLACK, 0, getHeight(), Color.BLUE);
        shape = new RoundRectangle2D.Double(0, 0, getWidth(), getHeight(), getHeight(), getHeight());

        if (isOver()) {
            glass = new GradientPaint(0, 0, new Color(1F, 1F, 1F, 0F), 0, getHeight(), new Color(1F, 1F, 1F, 0.5F));
        } else {
            glass = new GradientPaint(0, 0, new Color(1F, 1F, 1F, 0.5F), 0, getHeight(), new Color(1F, 1F, 1F, 0F));
        }

        if (isTekan()) {
            glass2 = new GradientPaint(0, 0, new Color(1F, 1F, 1F, 0F), 0, getHeight(), new Color(1F, 1F, 1F, 0.5F));
        } else {
            glass2 = new GradientPaint(0, 0, new Color(1F, 1F, 1F, 0.5F), 0, getHeight(), new Color(1F, 1F, 1F, 0F));
        }

        gd.setPaint(paint);
        gd.fill(shape);

        super.paintComponent(g);

        gd.setPaint(glass);
        gd.fill(shape);
        gd.setPaint(glass2);
        gd.fill(shape);
        gd.dispose();
    }
}

Selamat mencoba, semoga sukses…!!!