?? rectbutton.java
字號:
import java.awt.*;
import java.awt.event.*;
import java.util.*;
//swing classes
import com.sun.java.swing.text.*;
import com.sun.java.swing.*;
import com.sun.java.swing.event.*;
import com.sun.java.swing.border.*;
import com.sun.java.swing.tree.*;
public class RectButton extends JToggleButton implements Command
{
Mediator med;
public RectButton(ActionListener act, Mediator md)
{
super(" ");
setSize(new Dimension(35,35));
setBorderPainted(true);
setMargin(new Insets(5,12,5,12));
setToolTipText("Draw rectangle");
addActionListener(act);
med = md;
med.registerRectButton(this);
}
//--------------------------------
public Dimension getPreferredSize()
{
return new Dimension(35,35);
}
//--------------------------------
public void paint(Graphics g)
{
super.paint(g);
int h = getHeight();
int w = getWidth();
g.setColor(Color.black);
g.drawRect(4,4,w-8,h-8);
}
//-------------------------------------------
public void Execute()
{
med.startRectangle();
}
}
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