Reference no: EM13161500

For this assignment you are to create an interactive moving sign in the context of a cityscape street scene. Click the link below to see how a base version of this assignment works. Type a message in the long blank slot at the top left, and then click Start to see the message displayed in a moving format.

The driver and DisplayWindow classes, which you may NOT alter, are provided here:

import javax.swing.*;

/* Menu machinery provided, but you are free
 * to ignore it if your solution does not involve menus
 */
public class SignDriver {

        public static void main(String[] args) {
                DisplayWindow d = new DisplayWindow();
                JMenuBar menuBar = new JMenuBar(); // make menu bar
                d.setJMenuBar(menuBar); // add menu bar to window d
                MovingSignPanel p = new MovingSignPanel(menuBar);
                d.addPanel(p);
                d.showFrame();
        }
}

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package owl.common;

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

/**
 * A class that puts a graphics window on your display
 */
public class DisplayWindow extends JFrame {
        /**
         * Content pane that will hold the added Jpanel
         */
        private Container c;

        /**
         * DisplayWindow constructor - no parameters
         */
        public DisplayWindow() {
                super("Display");
                c = this.getContentPane();
        }

        /**
         * Adds panel to content pane
         * 
         * @parameter the panel to be added
         */
        public void addPanel(JPanel p) {
                c.add(p);
        }

        /**
         * consolidates the frame, makes it visible, causes program termination when
         * window is closed manually
         */
        public void showFrame() {
                this.pack();
                this.setVisible(true);
                this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        }
}

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Note that the application will makes use of the DisplayWindow class that figures prominently in Chapters 12 and 13 of the textbook. For this assignment you need only submit a single file, MovingSignPanel.java (must be so named), which extends JPanel in the standard way, and which carries out the main actions of the assignment.

Other issues

* The cityscape presented above in the running demonstration code is pathetic - there's just one building, no sky to speak of, etc. You are encouraged to vastly improve on the rendering of the cityscape. Ideas: more buildings; the sky can become lighter or darker over time; lights can go on in some of the windows in the buildings; you could add a park, a flagpole, the sun, the moon, cars, flying saucers; you can make the sign move faster or slower, and so forth.

* The SignDriver code includes machinery for including a menu or menus in your application. You DO NOT need to use this machinery. But if you decide to add menus, it's there.