JAVA : How to scroll the horizontal scrollbar by (shift + mouse wheel)

วิธี scroll horizontal scrollbar ด้วยการ กด shift + mouse wheel

// create mouse wheel listener and implement follow below...
@Override
public void mouseWheelMoved(MouseWheelEvent e) {
    if ((e.getModifiers() & java.awt.event.InputEvent.SHIFT_MASK)
            == java.awt.event.InputEvent.SHIFT_MASK) {
        if (scrollPane.getHorizontalScrollBar().isShowing()) {
          JViewport viewport = scrollPane.getViewport();
          Point viewPosition = viewport.getViewPosition();
          if (e.getWheelRotation() < 0) { // wheel up -
             viewPosition.x -= scrollPane.getHorizontalScrollBar()
                    .getBlockIncrement() * 15; // adjust up to you!
          } else { // wheel down +
             viewPosition.x += scrollPane.getHorizontalScrollBar()
                    .getBlockIncrement() * 15; // adjust up to you!
          }
          // X axis only
          if (viewPosition.x > viewport.getView().getWidth() - viewport.getWidth()) {
              viewPosition.x = viewport.getView().getWidth() - viewport.getWidth();
          }
          if (viewPosition.x < 0) {
              viewPosition.x = 0;
          }
          viewport.setViewPosition(viewPosition);
        }
    } else { // dispatchEvent of scrollpane
        scrollPane.dispatchEvent(e); // scroll vertical normaly...
    }
}