Class: DragonflyLibvips::Processors::ExtractArea

Inherits:
Object
  • Object
show all
Defined in:
lib/dragonfly_libvips/processors/extract_area.rb

Instance Method Summary collapse

Instance Method Details

#call(content, x, y, width, height, options = {}) ⇒ Object

Raises:



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# File 'lib/dragonfly_libvips/processors/extract_area.rb', line 8

def call(content, x, y, width, height, options = {})
  raise UnsupportedFormat unless content.ext
  raise UnsupportedFormat unless SUPPORTED_FORMATS.include?(content.ext.downcase)

  options = DragonflyLibvips.stringify_keys(options)
  format = options.fetch("format", content.ext)

  input_options = options.fetch("input_options", {})

  # input_options['access'] ||= 'sequential'
  if content.mime_type == "image/jpeg"
    input_options["autorotate"] = true unless input_options.has_key?("autorotate")
  end

  output_options = options.fetch("output_options", {})
  if FORMATS_WITHOUT_PROFILE_SUPPORT.include?(format)
    output_options.delete("profile")
  else
    output_options["profile"] ||= input_options.fetch("profile", EPROFILE_PATH)
  end
  output_options.delete("Q") unless /jpg|jpeg/i.match?(format.to_s)
  output_options["format"] ||= format.to_s if /gif|bmp/i.match?(format.to_s)

  img = ::Vips::Image.new_from_file(content.path, **DragonflyLibvips.symbolize_keys(input_options))
  img = img.extract_area(x, y, width, height)

  content.update(
    img.write_to_buffer(".#{format}", **DragonflyLibvips.symbolize_keys(output_options)),
    "name" => "temp.#{format}",
    "format" => format
  )
  content.ext = format
end

#update_url(url_attributes, _, _, _, _, options = {}) ⇒ Object 



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# File 'lib/dragonfly_libvips/processors/extract_area.rb', line 42

def update_url(url_attributes, _, _, _, _, options = {})
  options = options.transform_keys { |k| k.to_s } # stringify keys
  return unless format = options.fetch("format", nil)
  url_attributes.ext = format
end