class HexaPDF::Document::Images

def add(file_or_io)

same path name), the already existing image object is returned.
If the image has been added to the PDF before (i.e. if there is an image object with the

Adds the image from the given file or IO to the PDF document and returns the image object.

images.add(io) -> image
images.add(file) -> image
:call-seq: 
def add(file_or_io)
  name = if file_or_io.kind_of?(String)
           file_or_io
         elsif file_or_io.respond_to?(:to_path)
           file_or_io.to_path
         end
  if name
    name = File.absolute_path(name)
    image = find {|im| im.source_path == name }
  end
  unless image
    image = image_loader_for(file_or_io).load(@document, file_or_io)
    image.source_path = name
  end
  image
end