def crop_to_fit(self, image_size, view_size):
        self.blipFill.crop(self._fill_cropping(image_size, view_size))
Set cropping values in `p:blipFill/a:srcRect` such that an image of
dataset/ETHPy150Open scanny/python-pptx/pptx/oxml/shapes/picture.py/CT_Picture.crop_to_fit