import java.awt.Dimension;
import java.awt.Toolkit;
import java.awt.event.WindowEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.BorderLayout;
import java.util.Observer;
import javax.swing.JFrame;
import javax.swing.JComponent;
import java.awt.Graphics;
import java.awt.Graphics2D;                          
import java.awt.Point;
import java.awt.Color;
import java.awt.Rectangle;
import java.awt.Font;
import java.awt.Component;
import java.awt.geom.Point2D;
import java.awt.geom.Line2D;
import java.awt.geom.Rectangle2D; 
import java.awt.geom.Ellipse2D;   
import java.awt.font.TextLayout;  

public class MoveGlass {
  private static JFrame window;              // The application window
  private static Board view;                        // The view of the sketch
  private static Glass front;
  static MouseHandler mouseHandler;

  static double dx = 1.0, dy = 1.0;          // increments for change in location of rect
  static boolean moveIt = false;
  static Point2D.Double corner = new Point2D.Double(50.0,50.0);  //corner of rect
  static Rectangle2D.Double rect = new Rectangle2D.Double(corner.getX(),corner.getY(),140,100);

  public static void main(String[] args) {

    window = new JFrame("MoveGlass");    // Create the app window
    window.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);      // Default is exit the application
    Toolkit theKit = window.getToolkit();        // Get the window toolkit
    Dimension wndSize = theKit.getScreenSize();  // Get screen size
    // Set the position to screen center & size to half screen size
    window.setBounds(wndSize.width/4, wndSize.height/4,        // Position
                     wndSize.width/2, wndSize.height/2);       // Size

    view = new Board();              // Create the view
    front = new Glass();
    mouseHandler = new MouseHandler();
    front.addMouseListener(mouseHandler);


    window.getContentPane().add(view, BorderLayout.CENTER);
    window.setGlassPane(front);
    window.setVisible(true);
    window.getGlassPane().setVisible(true);

    // this loop redraws the glassPane
    while (corner.getX() < 200.0) {
      try{Thread.sleep(25);}catch(InterruptedException exc){}
      if(moveIt){
        corner.setLocation(corner.getX() + dx, corner.getY() + dy);
        rect = new Rectangle2D.Double(corner.getX(),corner.getY(),140,100);     
        front.repaint();
      }
    }  
  } 
  static class Board extends JComponent{
    public void paint(Graphics g) {
      Graphics2D g2D = (Graphics2D)g;             // Get a 2D device context
//      g2D.setPaint(color);
//      g2D.fill(rect);
//      g2D.draw(rect);
      g2D.setPaint(Color.CYAN);
      g2D.setFont(new Font("Arial", Font.PLAIN, 18));
      g2D.draw(new Line2D.Float(240.0f, 120.0f, 80.0f, 200.0f));
      g2D.draw(new Ellipse2D.Double(220.0,100.0,40.0,40.0));
      g2D.setPaint(Color.RED);
      g2D.drawString("Thanksgiving",70,100);
    }
  }
  static class Glass extends JComponent{
    public void paint(Graphics g) {
      Graphics2D g2D = (Graphics2D)g;             // Get a 2D device context
      g2D.setPaint(Color.GREEN);
      g2D.fill(rect);
      g2D.draw(rect);
    }
    private Graphics2D g2D = null;              // Temporary graphics context
  }

  static class MouseHandler extends MouseAdapter {
    // change increments to start rect moving
    public void mousePressed(MouseEvent e) {  
      if (rect.contains(e.getX(), e.getY())) 
        moveIt = true;
    }
  }
}