/**
 * COSC 286 Project Template
 * Spring 2007
 *
 * This Java application provides a basic shell for implementing graphics
 * algorithms.  If you are working on project 2, then make a copy of this
 * file named "p2.java".  Then do a global search and replace the string
 * "ProjectTemplate" with "p2".
 *
 * When coding your project, most modifications should occur in the paint()
 * method of the DrawingArea class.  However, keep in mind that you may have
 * to implement additional classes and methods to complete the project.
 *
 * You may also want to change the dimensions of the window size in the
 * main procedure of the ProjectTemplate class.
 *
 * Compile your project using the command:
 *
 *   javac p2.java
 *
 * Then run your project using the command:
 *
 *   java p2
 */

import java.awt.*;
import java.awt.event.*;

/*=======================================================================*/

class DrawingArea extends Component {

  protected Frame frame;

  public DrawingArea( Frame frame ) {
    this.frame = frame;
  } // DrawingArea

  public void setPixel( Graphics g, int x, int y ) {
    g.drawLine( x, y, x, y );
  } // setPixel

  public void paint( Graphics g ) {
    Dimension d = getSize();                 // Dimensions of the drawing area
    g.setColor( Color.black );               // Sets the drawing color to black
    setPixel(g, 20, 30);                     // Draws a single pixel
    g.setColor(new Color(128,128,128));      // Sets the drawing color to gray
    g.drawLine(0, 0, d.width-1, d.height-1); // Draws a line across the screen
    g.setColor(new Color(255,0,0));          // Sets the drawing color to red
    g.drawLine(d.width-1, 0, 0, d.height-1); // Draws a line across the screen
  } // paint

} // DrawingArea class

/*=======================================================================*/

public class ProjectTemplate extends Frame {

  public ProjectTemplate( int w, int h ) {

    super( "COSC 286 Project Template" );    // Create the window
    this.setSize( w, h );                    // Specify frame's size
    this.setResizable( false );              // Prevent resizing (supposedly)
    
    // Create a ScrollPane
    ScrollPane pane = new ScrollPane( ScrollPane.SCROLLBARS_NEVER );
    pane.setSize( w, h );                    // Specify the pane's size
    this.add( pane, "Center" );              // Add it to the frame

    DrawingArea image;
    image = new DrawingArea( this );         // Create a drawing area
    pane.add( image );                       // Add it to the ScrollPane

    MenuBar menubar = new MenuBar();         // Create a menubar
    this.setMenuBar( menubar );              // Add it to the frame
    Menu file = new Menu( "File" );          // Create a File menu
    menubar.add( file );                     // Add to menubar

    // Create a quit menu item with a shortcut, and add it to the menu
    MenuItem q;
    file.add( q = new MenuItem( "Quit", new MenuShortcut( KeyEvent.VK_Q ) ) );

    // Create and register an action listener object for the menu item.
    q.addActionListener( new ActionListener() {
      public void actionPerformed( ActionEvent e ) { System.exit(0); }
    });

    // Create and register action listener for the window closing event.
    addWindowListener( new WindowAdapter() {
      public void windowClosing( WindowEvent e ) { System.exit(0); }
    });

    // Set the window size and pop it up.
    this.pack();
    this.setVisible( true );
  } // ProjectTemplate

  public static void main( String[] args ) {
    try {
      new ProjectTemplate( 300, 300 );
    } // try
    catch( Exception e ) {
      System.out.println( e.getMessage() );
      e.printStackTrace();
    } // catch
  } // main

} // ProjectTemplate class