code: protected boolean inViewPort(final int dataIndex) {
          boolean inViewPort = true;
  
          for (Layout layout: mLayouts) {
              inViewPort = inViewPort && (layout.inViewPort(dataIndex) || !layout.isClippingEnabled());
          }
          return inViewPort;
      }
docs: Checks if the child is currently in ViewPort
  @param dataIndex child index
  @return true if the child is in viewport, false - otherwise