package Lect40CustomWidget;

import java.awt.*;
import java.awt.geom.*;
import javax.swing.*;

// This is about as simple a custom widget can be
// It just paints a red square at a fixed place within the widget
public class RedSquareWidget extends JComponent {
	public void paintComponent(Graphics g) {
		// We are promised we really get a Graphics2D, a subclass of Graphics.  The API
		// uses the older Graphics object for backwards compatibility.
		Graphics2D g2 = (Graphics2D)g;
		
		g2.setColor(Color.WHITE);
        g2.fill(new Rectangle2D.Double(0, 0, getWidth(), getHeight()));

		g2.setColor(Color.RED);
		g2.fill(new Rectangle2D.Double(50, 50, 50, 50));
	}
}