docs: private RectF getDisplayRect(Matrix matrix) {
          ImageView imageView = getImageView();
  
          if (null != imageView) {
              Drawable d = imageView.getDrawable();
              if (null != d) {
                  mDisplayRect.set(0, 0, d.getIntrinsicWidth(), d.getIntrinsicHeight());
                  matrix.mapRect(mDisplayRect);
                  return mDisplayRect;
              }
          }
          return null;
      }