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 6

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 format.to_s =~ /jpg|jpeg/i
  output_options['format'] ||= format.to_s if format.to_s =~ /gif|bmp/i

  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 40

def update_url(url_attributes, _, _, _, _, options = {})
  options = options.each_with_object({}) { |(k, v), memo| memo[k.to_s] = v } # stringify keys
  return unless format = options.fetch('format', nil)
  url_attributes.ext = format
end