Module: Gluttonberg::Library::QuickMagick::Serialization

Extended by:
ActiveSupport::Concern
Included in:
Image
Defined in:
lib/gluttonberg/library/quick_magick/image/serialization.rb

Defined Under Namespace

Modules: ClassMethods

Instance Method Summary collapse

Instance Method Details

#save(output_filename) ⇒ Object Also known as: write, convert

InstanceMethods saves the current image to the given filename



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# File 'lib/gluttonberg/library/quick_magick/image/serialization.rb', line 34

def save(output_filename)
  result = QuickMagick.exec3 "convert #{command_line} #{QuickMagick.c output_filename}"
  if @pseudo_image
    # since it's been saved, convert it to normal image (not pseudo)
    initialize(output_filename)
    revert!
  end
  return result
end

#save! ⇒ Object Also known as: write!, mogrify!

saves the current image overwriting the original image file

Raises:



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# File 'lib/gluttonberg/library/quick_magick/image/serialization.rb', line 48

def save!
  raise QuickMagick::QuickMagickError, "Cannot mogrify a pseudo image" if @pseudo_image
  result = QuickMagick.exec3 "mogrify #{command_line}"
  # remove all operations to avoid duplicate operations
  revert!
  return result
end

#to_blob ⇒ Object 



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# File 'lib/gluttonberg/library/quick_magick/image/serialization.rb', line 59

def to_blob
  tmp_file = Tempfile.new(QuickMagick::random_string)
  if command_line =~ /-format\s(\S+)\s/
    # use format set up by user
    blob_format = $1
  elsif !@pseudo_image
    # use original image format
    blob_format = self.format
  else
    # default format is jpg
    blob_format = 'jpg'
  end
  save "#{blob_format}:#{tmp_file.path}"
  blob = nil
  File.open(tmp_file.path, 'rb') { |f| blob = f.read}
  blob
end