Swing/DragLimitedSlider のバックアップ(No.3)

class MetalDragLimitedSliderUI extends MetalSliderUI {
  @Override protected TrackListener createTrackListener(JSlider slider) {
    return new TrackListener() {
      @Override public void mouseDragged(MouseEvent e) {
        //case HORIZONTAL:
        int halfThumbWidth = thumbRect.width / 2;
        int thumbLeft = e.getX() - offset;
        int maxPos = xPositionForValue(MAXI) - halfThumbWidth;
        if (thumbLeft > maxPos) {
          int x = maxPos + offset;
          MouseEvent me = new MouseEvent(
            e.getComponent(), e.getID(), e.getWhen(), e.getModifiers(),
            x, e.getY(),
            e.getXOnScreen(), e.getYOnScreen(),
            e.getClickCount(), e.isPopupTrigger(), e.getButton());
          e.consume();
          super.mouseDragged(me);
        } else {
          super.mouseDragged(e);
        }
      }
    };
  }
}