public @Nullable PointF getActualImageFocusPoint() {
    if (!hasScaleTypeDrawableAtIndex(ACTUAL_IMAGE_INDEX)) {
      return null;
    }
    return getScaleTypeDrawableAtIndex(ACTUAL_IMAGE_INDEX).getFocusPoint();
  }
Sets the actual image scale type.
drawee/src/main/java/com/facebook/drawee/generic/GenericDraweeHierarchy.java