/*  MyButtonBorder.java
 */

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


public class MyButtonBorder extends AbstractBorder
{
     //private static Border buttonBorder = new MyButtonBorder();
     private static MyButtonBorder buttonBorder = new MyButtonBorder();

     //public static Border getButtonBorder()
     public static MyButtonBorder getButtonBorder()
     {
         return buttonBorder;
     }

     public void paintBorder( Component c, Graphics g,
        int x, int y, int width, int height )
     {
         boolean pressed = false;
         boolean focused = false;

         if( c instanceof AbstractButton )
         {
             AbstractButton b  = (AbstractButton)c;
             ButtonModel    bm = b.getModel();

             pressed = bm.isPressed();
             focused = (pressed && bm.isArmed()) ||
                       (b.isFocusPainted() && b.hasFocus() );
         }

         Insets in = getBorderInsets( c );

         Polygon p1 = new Polygon();
         p1.addPoint( x+in.left, y            );
         p1.addPoint( x,         y+(height/2) );
         p1.addPoint( x+in.left, y+height     );

         Polygon p2 = new Polygon();
         p2.addPoint( x+width-in.right, y            );
         p2.addPoint( x+width,          y+(height/2) );
         p2.addPoint( x+width-in.right, y+height     );

         if( pressed )
         {
             g.setColor( c.getForeground() );
         }
         else if( focused )
         {
             g.setColor( SystemColor.green );
         }
         else
         {
             g.setColor( SystemColor.red  );
         }

         g.fillPolygon( p1 );
         g.fillPolygon( p2 );
     }

     public Insets getBorderInsets( Component c )
     {
         return new Insets( 5, 10, 5, 10 );
     }
}