demo.java

gcc的组建

      p.add (visible);
      visible.addItemListener (this);
      
      sensitive = new Checkbox("Sensitive", true);
      p.add (sensitive);
      sensitive.addItemListener (this);
      
      add (p, "Center");
      
      Button cb = new Button ("Close");
      cb.addActionListener(new ActionListener () {
	  public void actionPerformed (ActionEvent e) {
	    dispose();
	  }
	});
      
      add (cb, "South");
      setTitle ("TextField");
      pack();
    }
    
    public void itemStateChanged (ItemEvent e)
    {
      boolean on=true;
      
      if (e.getStateChange () == ItemEvent.DESELECTED)
	on=false;
      if (e.getSource() == editable)
	text.setEditable (on);
      if (e.getSource() == visible)
	if (on)
	  text.setEchoChar ((char) 0);
	else
	  text.setEchoChar ('*');
      if (e.getSource() == sensitive)
	text.setEnabled (on);
      
    }
  }
  
  static class FileWindow extends FileDialog implements SubWindow
  {
    boolean initted = false;
    
    public FileWindow (MainWindow mw)
    {
      super (mw);
    }
    
    public void setVisible (boolean visible)
    {
      if (!initted && visible)
	init();
      super.setVisible (visible);
    }
    
    public void init() 
    {
      initted = true;
    }
  }
  
  static class LabelWindow extends SubFrame
  {
    public void init ()
    {
      initted = true;
      
      Panel p = new Panel();
      p.setLayout (new GridLayout (3, 1));
      ((GridLayout) p.getLayout ()).setHgap (5);
      ((GridLayout) p.getLayout ()).setVgap (5);
      
      p.add (new Label ("left justified label", Label.LEFT));
      p.add (new Label ("center justified label", Label.CENTER));
      p.add (new Label ("right justified label", Label.RIGHT));
      
      add (p, "Center");
      
      Button cb = new Button ("Close");
      cb.addActionListener(new ActionListener () {
	  public void actionPerformed (ActionEvent e) {
	    dispose();
	  }
	});
      
      add (cb, "South");
      setTitle ("Labels");
      pack();
    }
  }
  
  static class ListWindow extends SubFrame
  {
    public void init ()
    {
      initted = true;
      
      Panel p = new Panel ();
      p.setLayout (new GridLayout (3, 1));
      
      List l = new List (5, true);
      for (int i = 0; i < 10; i++)
	l.add ("List item " + i);

      p.add (l);

      add (p, "Center");
      
      Button cb = new Button ("Close");
      cb.addActionListener(new ActionListener () {
	  public void actionPerformed (ActionEvent e) {
	    dispose();
	  }
	});
      
      add (cb, "South");
      setTitle ("List");
      pack();
    }
  }    
  
  
  static class RadioWindow extends SubFrame
  {
    public void init ()
    {
      initted = true;
      
      Panel p = new Panel();
      p.setLayout (new GridLayout (3, 1));
      ((GridLayout) p.getLayout ()).setHgap (5);
      ((GridLayout) p.getLayout ()).setVgap (5);
      
      final CheckboxGroup cg = new CheckboxGroup();
      final Checkbox[] boxes = new Checkbox[3];
      for (int i = 0; i < 3; ++i)
	{
	  boxes[i] = new Checkbox("button" + i, cg, i == 0);
	  p.add(boxes[i]);
	}
      
      add (p, "North");
      
      p = new Panel();
      p.setLayout (new GridLayout (1, 3));
      ((GridLayout) p.getLayout ()).setHgap (5);
      ((GridLayout) p.getLayout ()).setVgap (5);
      
      for (int i = 0; i < 3; ++i)
	{
	  final int val = i;
	  Button tweak = new Button ("Set " + i);
	  tweak.addActionListener(new ActionListener ()
	    {
	      public void actionPerformed (ActionEvent e)
	      {
		cg.setSelectedCheckbox(boxes[val]);
	      }
	    });
	  p.add(tweak);
	}
      
      add (p, "Center");
      
      Button cb = new Button ("Close");
      cb.addActionListener(new ActionListener () {
	  public void actionPerformed (ActionEvent e) {
	    dispose();
	  }
	});
      
      add (cb, "South");
      setTitle ("Radio Buttons");
      pack();
    }
  }
  
  static class TestWindow extends SubFrame
  {
    static int xs = 5, ys = 5;
    final Frame parent;
    
    public TestWindow(Frame f)
    {
      parent = f;
    }

    public void init()
    {
      initted = true;
      
      addWindowListener (new WindowAdapter ()
        {
          public void windowClosing (WindowEvent e)
          {
            hide ();
          }
        });

      Panel pan = new Panel();
      
      final Label l = new Label ("Pithy Message:");
      l.setCursor (Cursor.getPredefinedCursor (Cursor.WAIT_CURSOR));
      pan.add (l);
      
      TextField tf = new TextField("Hello world!");
      pan.add(tf);
      add(pan,"North");
      
      final Image img;
      URL imageurl;
      imageurl = this.getClass()
	.getResource("/gnu/classpath/examples/icons/big-warning.png");
      img = Toolkit.getDefaultToolkit().createImage(imageurl);

      final Canvas ch = new Canvas()
	{ 
	  public void paint (Graphics g)
	  {
	    g.drawImage(img, xs + 25, ys + 25, this);

	    Font font = new Font ("Serif", Font.PLAIN, 18); 
	    g.setFont (font);
	    g.setXORMode (Color.red);

	    g.drawString("Hi Red!", xs + 15, ys + 10);
	    g.setColor (Color.blue);
	    g.drawLine (xs, ys, xs + 100, ys + 100);
	    
	  }
	};
      ch.setSize(150, 150);
      add(ch, "Center");

      final ScrollPane sp = new ScrollPane(ScrollPane.SCROLLBARS_ALWAYS);
      final Panel p = new Panel();
      p.add(new Button("Stop"));
      p.add(new Button("evil"));
      p.add(new Button("hoarders"));
      p.add(new Button("use"));
      p.add(new Button("GNU!"));

      sp.add(p);
      add(sp, "South");

      Panel east_panel = new Panel();
      east_panel.setLayout(new GridLayout (0,1));

      CheckboxGroup group = new CheckboxGroup();
      Checkbox cb = new Checkbox("one", group, true);
      east_panel.add(cb);
      cb = new Checkbox("two", group, false);
      east_panel.add(cb);

      add(east_panel,"East");

      final Button wb = new Button();
      wb.setLabel("Hello World!");
      wb.addActionListener(new ActionListener()
	{
	  public void actionPerformed (ActionEvent e)
	  {
	    l.setText ("Hello World!");
	    
	    final Dialog d = new Dialog(parent);
	    d.setLayout(new FlowLayout());
	    d.setModal(true);
	    Button b = new Button("foobar");
	    b.addMouseListener(new MouseAdapter()
	      {
		public void mousePressed (MouseEvent me)
		{
		  d.hide ();
		}
	      });
	    d.add (b);

	    List ch = new List();
	    ch.add("Ding");
	    ch.add("September");
	    ch.add("Red");
	    ch.add("Quassia");
	    ch.add("Pterodactyl");
	    d.add(ch);

	    d.pack ();
	    d.show ();
	  }
	});

      wb.addMouseListener(new MouseAdapter()
	{
	  public void mousePressed(MouseEvent e) {
	    xs++;
	    ys++;
	    ch.repaint ();
	  }
	});
      
      add(wb,"West");
      
      pack();
      show();
      
      sp.setScrollPosition (10,0);
      
      Toolkit t = Toolkit.getDefaultToolkit();
      t.beep();
    }
  }

  static class RoundRectWindow extends SubFrame
  {
    public void init ()
    {
      initted = true;
      setTitle("RoundRect");
      setLayout(new BorderLayout());
      add(new DrawRoundRect(), "West");
      Button cb = new Button ("Close");
      cb.addActionListener(new ActionListener () {
          public void actionPerformed (ActionEvent e) {
            dispose();
          }
        });
      add(cb, "Center");
      add(new FillRoundRect(), "East");
      pack();
    }

    static class DrawRoundRect extends Panel 
    { 
      
      public Dimension getPreferredSize() 
      { 
	return new Dimension(500, 500); 
      } 

      public void paint( Graphics g )  
      {  
	// left side 
	
	// rectangles should be identical 
	g.setColor(Color.red); 
	g.drawRect(50, 50, 300, 100); 
	g.setColor(Color.black); 
	g.drawRoundRect(50, 50, 300, 100, 0, 0); 
	
	// small round corners 
	g.setColor(Color.red); 
	g.drawRect(50, 200, 300, 100); 
	g.setColor(Color.black); 
	g.drawRoundRect(50, 200, 300, 100, 25, 25); 
	
	// round ends  
	g.setColor(Color.red); 
	g.drawRect(50, 350, 300, 100); 
	g.setColor(Color.black); 
	g.drawRoundRect(50, 350, 300, 100, 25, 100); 
	
	// right side 
	
	// circle only 
	g.setColor(Color.blue); 
	g.drawOval(375, 50, 100, 100); 
	
	// round rectangle should exactly cover circle 
	g.setColor(Color.blue); 
	g.drawOval(375, 200, 100, 100); 
	g.setColor(Color.black); 
	g.drawRoundRect(375, 200, 100, 100, 100, 100); 
	
	// round rectangle should look like a circle 
	g.setColor(Color.red); 
	g.drawRect(375, 350, 100, 100); 
	g.setColor(Color.black); 
	g.drawRoundRect(375, 350, 100, 100, 100, 100); 
      } 
    }

    static class FillRoundRect extends Panel 
    { 
      
      public Dimension getPreferredSize() 
      { 
	return new Dimension(500, 500); 
      } 
      
      public void paint( Graphics g )  
      {  
	// left side 
	
	// rectangles should be identical 
	g.setColor(Color.red); 
	g.fillRect(50, 50, 300, 100); 
	g.setColor(Color.black); 
	g.fillRoundRect(50, 50, 300, 100, 0, 0); 
	
	// small round corners 
	g.setColor(Color.red); 
	g.fillRect(50, 200, 300, 100); 
	g.setColor(Color.black); 
	g.fillRoundRect(50, 200, 300, 100, 25, 25); 
	
	// round ends  
	g.setColor(Color.red); 
	g.fillRect(50, 350, 300, 100); 
	g.setColor(Color.black); 
	g.fillRoundRect(50, 350, 300, 100, 25, 100); 
	
	// right side 
	
	// circle only 
	g.setColor(Color.blue); 
	g.fillOval(375, 50, 100, 100); 
	
	// round rectangle should exactly cover circle 
	g.setColor(Color.blue); 
	g.fillOval(375, 200, 100, 100); 
	g.setColor(Color.black); 
	g.fillRoundRect(375, 200, 100, 100, 100, 100); 
	
	// round rectangle should look like a circle 
	g.setColor(Color.red); 
	g.fillRect(375, 350, 100, 100); 
	g.setColor(Color.black); 
	g.fillRoundRect(375, 350, 100, 100, 100, 100); 
      } 
    }
  }

}