import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.Rectangle;

public class WheelReinventing extends JPanel {
	private boolean pressed = false;
	
 	public static final int WINDOW_WIDTH = 640;
	public static final int WINDOW_HEIGHT = 480;
	public static final int BUTTON_WIDTH = 100;
	public static final int BUTTON_HEIGHT = 30;
	public static final String BUTTON_TEXT = "Click Me!";
	public static final int BUTTON_X = WINDOW_WIDTH / 2 - BUTTON_WIDTH / 2;
	public static final int BUTTON_Y = WINDOW_HEIGHT / 2 - BUTTON_HEIGHT / 2;
	
	public static void main(final String[] args) {
       		JFrame frame = new JFrame("Let's Reinvent the Wheel!");
 	      	frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
       		frame.setSize(WINDOW_WIDTH, WINDOW_HEIGHT);
      	 	frame.setLocationRelativeTo(null);
       		
		WheelReinventing paint = new WheelReinventing();
		frame.setContentPane(paint);
		paint.init();
		
		frame.setVisible(true);
	}
    
	public WheelReinventing() {
	}

	public void init() {
		addMouseListener(new MouseAdapter() {
			public void mousePressed(MouseEvent e) {
				if (e.getX() >= BUTTON_X 
					&& e.getX() <= BUTTON_X + BUTTON_WIDTH 
					&& e.getY() >= BUTTON_Y
					&& e.getY() <= BUTTON_Y + BUTTON_HEIGHT) {
					pressed = true;
					repaint();
				}
			}

			public void mouseReleased(MouseEvent e) {
				pressed = false;
				repaint();
			}
		});	
			
	}		

	public void paint(Graphics g) {
		super.paint(g);
		Graphics2D g2d = (Graphics2D)g;
		g2d.setColor(Color.lightGray);

		g2d.fill3DRect(BUTTON_X, BUTTON_Y, BUTTON_WIDTH, BUTTON_HEIGHT, !pressed);
		g2d.setColor(Color.black);
		g2d.drawString(BUTTON_TEXT, BUTTON_X + 25, BUTTON_Y + 20);
		
	}
		
}