Filing this as an RFE. _Roger Pease


>Date: Fri, 11 Jun 1999 14:44:24 +1000
>From: Stan Gifford <###@###.###>
>X-Accept-Language: en
>MIME-Version: 1.0
>To: ###@###.###
>Subject: Code sample included for java tutorial
>
>Hi I could not find an example of the following *anywhere*. Should you
>wish to include it in the online tutorial please feel free.
>
>The program is an application.
>It has a swing menu that draws a box or an oval centred on a window.
>(Pretty simple Huh?)
>
>Enjoy!
>
>Stan.
>
>--
>==============================================================================
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> Disclaimer : Why is everyone flying the wrong way except me?
>==============================================================================
>
>import java.awt.*;
>import java.awt.event.*;
>import javax.swing.JMenu;
>import javax.swing.JMenuItem;
>import javax.swing.JCheckBoxMenuItem;
>import javax.swing.JRadioButtonMenuItem;
>import javax.swing.ButtonGroup;
>import javax.swing.JMenuBar;
>import javax.swing.KeyStroke;
>import javax.swing.ImageIcon;
>
>import javax.swing.JTextArea;
>import javax.swing.JScrollPane;
>import javax.swing.JFrame;
>import java.awt.geom.*;
>import javax.swing.*;
>import java.awt.image.*;
>
>
>class new_JLabel extends JLabel {
>static int draw_mode=0;
>static int width=500;
>static int height=500;
>
> public void paint(Graphics g) {
>//
>// Erase the screen (Set background white)
>//
> Dimension d=getSize();
> width=d.width;
> height=d.height;
> g.setColor(Color.white);
> g.fillRect(0,0,width,height);
>
> if (draw_mode == 1) {dobox(g);}
> if (draw_mode == 2) {dooval(g);}
> }
> public void update(Graphics g) {
>
>
> }
>
>
>
> static void dobox(Graphics g) {
> g.setColor(Color.red);
> g.drawRect(width/2-25,height/2-25,50,50);
>
> }
>
> static void dooval(Graphics g) {
> g.setColor(Color.black);
> g.drawOval(width/2-15,height/2-20,30,40);
> }
>
>}
>
>public class DiskMap extends JFrame implements ActionListener,
>ItemListener {
> static new_JLabel output;
> static JScrollPane scrollPane;
> static Container contentpane;
> static String newline = "\n";
> final static Color bg = Color.white;
>
> final static Color fg = Color.black;
> final static Color red = Color.red;
> final static Color white = Color.white;
>
>
> static DiskMap window;
> public DiskMap() {
> JMenuBar menuBar;
> JMenu menu, submenu;
> JMenuItem menuItem;
> JCheckBoxMenuItem cbMenuItem;
> JRadioButtonMenuItem rbMenuItem;
>
> addWindowListener(new WindowAdapter() {
> public void windowClosing(WindowEvent e) {
> System.exit(0);
> }
> });
>
> //Add regular components to the window, using the default
>BorderLayout.
> Container contentPane = getContentPane();
> output = new new_JLabel();
> output.setOpaque(true);
> output.setBackground(Color.white);
> scrollPane = new JScrollPane(output);
>
>
> //Create the menu bar.
> menuBar = new JMenuBar();
> setJMenuBar(menuBar);
>
> //Build the first menu.
> menu = new JMenu("File");
> menu.getAccessibleContext().setAccessibleDescription(
> "The only menu in this program that has menu items");
> menuBar.add(menu);
>
> //a group of JMenuItems
> menuItem = new JMenuItem("Draw a Box");
> menuItem.addActionListener(this);
> menuItem.setActionCommand("1");
> menu.add(menuItem);
>
> menuItem = new JMenuItem("Draw an Oval");
> menuItem.addActionListener(this);
> menuItem.setActionCommand("2");
> menu.add(menuItem);
> contentPane.add(scrollPane, BorderLayout.CENTER);
> }
>
> public void actionPerformed(ActionEvent e) {
> JMenuItem source = (JMenuItem)(e.getSource());
>
> if (e.getActionCommand() == "1") {output.draw_mode=1;};
> if (e.getActionCommand() == "2") {output.draw_mode=2;};
>
> window.repaint();
>
>
> }
>
>
> public void itemStateChanged(ItemEvent e) {
> JMenuItem source = (JMenuItem)(e.getSource());
> }
>
> // Returns just the class name -- no package info.
> protected String getClassName(Object o) {
> String classString = o.getClass().getName();
> int dotIndex = classString.lastIndexOf(".");
> return classString.substring(dotIndex+1);
> }
>
>
>
> public static void main(String[] args) {
> window = new DiskMap();
>
> window.setTitle("DiskMap");
> window.setSize(500, 500);
> window.setVisible(true);
>
> }
>}