VerticalToggleButton.java

package net.sourceforge.squirrel_sql.client.gui.desktopcontainer.docktabdesktop;

import java.awt.Color;
import java.awt.FlowLayout;
import java.awt.Font;
import java.awt.FontMetrics;
import java.awt.Graphics2D;
import java.awt.Insets;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import javax.swing.*;

public class VerticalToggleButton extends JToggleButton
{
   private static final int WIDHT_MARGIN = 20;
   private static final int HEIGHT_MARGIN = 4;

   public VerticalToggleButton(String caption)
   {
      Font f = getFont();
      FontMetrics fm = getFontMetrics(f);
      int captionHeight = fm.getHeight();
      int captionWidth = fm.stringWidth(caption);
      BufferedImage bi = new BufferedImage(captionHeight + 2 * HEIGHT_MARGIN, captionWidth + 2 * WIDHT_MARGIN, BufferedImage.TYPE_INT_ARGB);
      Graphics2D g = (Graphics2D) bi.getGraphics();

      g.setColor(new Color(0, 0, 0, 0)); // transparent
      g.fillRect(0, 0, bi.getWidth(), bi.getHeight());

      g.setColor(getForeground());
      g.setFont(f);
      g.setRenderingHint(RenderingHints.KEY_TEXT_ANTIALIASING, RenderingHints.VALUE_TEXT_ANTIALIAS_ON);

      g.rotate(-Math.PI / 2);
      g.translate(-bi.getHeight(), bi.getWidth());
      g.drawString(caption, WIDHT_MARGIN , -HEIGHT_MARGIN - fm.getDescent());

      Icon icon = new ImageIcon(bi);
      setIcon(icon);
      setActionCommand(caption);
   }

   public static void main(String[] args)
   {
      SwingUtilities.invokeLater(new Runnable()
      {
         public void run()
         {
            JFrame frame = new JFrame("Vertical Button Demo");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.setLayout(new FlowLayout());
            frame.add(new VerticalToggleButton("Vertical Up"));
            frame.add(new VerticalToggleButton("Vertical Down"));
            frame.pack();
            frame.setVisible(true);
         }
      });
   }
}