'Return a new ``<pic:pic>`` element populated with the minimal
contents required to define a viable picture element, based on the
values passed as parameters.'

@classmethod
def new(cls, pic_id, filename, rId, cx, cy):

    pic = parse_xml(cls._pic_xml())
    pic.nvPicPr.cNvPr.id = pic_id
    pic.nvPicPr.cNvPr.name = filename
    pic.blipFill.blip.embed = rId
    pic.spPr.cx = cx
    pic.spPr.cy = cy
    return pic
