boolean isInDragZone(MouseEvent e) {
      MouseEvent event = getTargetEvent(e);
      if (event == null) return false;
      Point p = event.getPoint();
      boolean vertical = isVertical();
      OnePixelDivider d = OnePixelDivider.this;
      if ((vertical ? p.x : p.y) < 0 || vertical && p.x > d.getWidth() || !vertical && p.y > d.getHeight()) return false;
      int r = Math.abs(vertical ? p.y : p.x);
      return r < JBUIScale.scale(Registry.intValue("ide.splitter.mouseZone"));
    }
boolean isInDragZone(MouseEvent e)