/* 
 * Scribble on a Canvas.
 * 
 * Functionality: The user can click on the canvas. Lines are drawn to connect the
 * points where the user clicks .
 * 
 * Note: the drawing is not in paint()
 * 
 * @author Laura Toma, csci 210
 * 
 */
import javax.swing.*;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.*;

public class Scribbler2 extends JFrame implements MouseInputListener {

    //stores the last point where the user clicked
    private Point prevPoint;
   
    
    public Scribbler2() {
        super("Scribble");
        setSize(400, 400);

	//exit on close 
	setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        setVisible(true);
        
	addMouseMotionListener(this);
	addMouseListener(this);
    }
    
    //when the mouse is pressed, record the position
    public void mousePressed(MouseEvent e) {
	System.out.println("mouse pressed");
	prevPoint = new Point(e.getX(), e.getY());
    }
    
    //when the mouse is dragged, connect it to the previous point and
    //record the new position
    public void mouseDragged(MouseEvent e) {
	System.out.println("mouse dragging");
	Graphics g = this.getGraphics();
	g.drawLine((int)prevPoint.getX(), (int)prevPoint.getY(), e.getX(), e.getY());
	prevPoint = new Point(e.getX(), e.getY());
    }
    
    public void mouseReleased(MouseEvent e) {}
   
    public void mouseClicked(MouseEvent e) {}
   
    public void mouseEntered(MouseEvent e) {}
   
    public void mouseExited(MouseEvent e) {}
   
    public void mouseMoved(MouseEvent e) {}
   
    public static void main (String args[]) {
	Scribbler2 s = new Scribbler2();
    }
};