protected void paintBackground(Graphics g) {
   int draggedColumn = -1;
   if ((header != null) && (header.getTable() != null) && header.getDraggedColumn() != null) {
     draggedColumn =
         header.getColumnModel().getColumnIndex(header.getDraggedColumn().getIdentifier());
   }
   int w = getWidth();
   int h = getHeight();
   if ((table != null) && table.isEnabled() && (col == rolloverCol || col == draggedColumn)) {
     JTattooUtilities.fillHorGradient(
         g, AbstractLookAndFeel.getTheme().getRolloverColors(), 0, 0, w, h);
     if (drawRolloverBar()) {
       g.setColor(AbstractLookAndFeel.getFocusColor());
       g.drawLine(0, 0, w - 1, 0);
       g.drawLine(0, 1, w - 1, 1);
       g.drawLine(0, 2, w - 1, 2);
     }
   } else if (drawAllwaysActive() || JTattooUtilities.isFrameActive(header)) {
     if (header.getBackground() instanceof ColorUIResource) {
       JTattooUtilities.fillHorGradient(
           g, AbstractLookAndFeel.getTheme().getColHeaderColors(), 0, 0, w, h);
     } else {
       g.setColor(header.getBackground());
       g.fillRect(0, 0, w, h);
     }
   } else {
     if (header.getBackground() instanceof ColorUIResource) {
       JTattooUtilities.fillHorGradient(
           g, AbstractLookAndFeel.getTheme().getInActiveColors(), 0, 0, w, h);
     } else {
       g.setColor(header.getBackground());
       g.fillRect(0, 0, w, h);
     }
   }
 }
 private boolean shouldIgnore(MouseEvent e) {
   return e.isConsumed() || (!(SwingUtilities.isLeftMouseButton(e) && table.isEnabled()));
 }