code: private int getIndicatorStartPos() {
          switch (getPosition()) {
              case TOP:
                  return mIndicatorClipRect.left;
              case RIGHT:
                  return mIndicatorClipRect.top;
              case BOTTOM:
                  return mIndicatorClipRect.left;
              default:
                  return mIndicatorClipRect.top;
          }
      }
docs: Returns the start position of the indicator.
  
  @return The start position of the indicator.