public RectF getCropWindowRect() {
    if (mCropOverlayView == null) {
      return null;
    }
    return mCropOverlayView.getCropWindowRect();
  }
Gets the crop window's position relative to the parent's view at screen.

@return a Rect instance containing cropped area boundaries of the source Bitmap
core/src/main/java/com/theartofdev/edmodo/cropper/CropImageView.java