package examples;

import java.awt.*;
import java.awt.event.*;
import java.awt.geom.GeneralPath;

import javax.swing.JPanel;

@SuppressWarnings("serial")
public class Scribble extends JPanel {  // the view;
	public static final Stroke STROKE =
		new BasicStroke(6, BasicStroke.CAP_ROUND, BasicStroke.JOIN_BEVEL);
	GeneralPath sketch; // the model

	public Scribble(GeneralPath sketch) {
		this.sketch = sketch;
	}
	
	public Scribble() {
		this(new GeneralPath());
	}
	
	public void reset() {
		sketch.reset();
		repaint();
	}
	
	public GeneralPath getSketch() { return sketch; }
	public void setSketch(GeneralPath sketch) { this.sketch = sketch; }

	@Override
	public void paint(Graphics g) {
		super.paint(g);
		g.setColor(Color.BLUE);
		((Graphics2D) g).setRenderingHint(RenderingHints.KEY_ANTIALIASING,
				RenderingHints.VALUE_ANTIALIAS_ON);
		((Graphics2D) g).setStroke(STROKE);
		((Graphics2D) g).draw(sketch);
	}

	public static class Controller extends MouseAdapter
		implements MouseMotionListener {
		GeneralPath model;
		Scribble view;

		public Controller(Scribble view) {
			this.model = view.getSketch();
			this.view = view;
			view.addMouseListener(this);
			view.addMouseMotionListener(this);
		}

		public void mousePressed(MouseEvent me) {
			model.moveTo(me.getX(), me.getY());
		}
		
		public void mouseClicked(MouseEvent me) {
			if (me.getClickCount() > 1) {
				model.reset();
				view.repaint();
			}
		}

		public void mouseDragged(MouseEvent me) {
			model.lineTo(me.getX(), me.getY());
			view.repaint();
		}

		public void mouseMoved(MouseEvent arg0) { }
	}
}