class DragonflyLibvips::Processors::Thumb
Constants
- DPI
- OPERATORS
- RESIZE_GEOMETRY
Public Instance Methods
call(content, geometry, options = {})
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# File lib/dragonfly_libvips/processors/thumb.rb, line 11 def call(content, geometry, options = {}) raise UnsupportedFormat unless content.ext raise UnsupportedFormat unless SUPPORTED_FORMATS.include?(content.ext.downcase) options = DragonflyLibvips.stringify_keys(options) filename = content.path format = options.fetch('format', content.ext).to_s input_options = options.fetch('input_options', {}) input_options['access'] = input_options.fetch('access', 'sequential') input_options['autorotate'] = input_options.fetch('autorotate', true) if content.mime_type == 'image/jpeg' if content.mime_type == 'application/pdf' input_options['dpi'] = input_options.fetch('dpi', DPI) input_options['page'] = input_options.fetch('page', 0) else input_options.delete('page') input_options.delete('dpi') 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 input_options = input_options.each_with_object({}) { |(k, v), memo| memo[k.to_sym] = v } # symbolize img = ::Vips::Image.new_from_file(filename, DragonflyLibvips.symbolize_keys(input_options)) dimensions = case geometry when RESIZE_GEOMETRY then Dimensions.call(geometry, img.width, img.height) else raise ArgumentError, "Didn't recognise the geometry string: #{geometry}" end thumbnail_options = options.fetch('thumbnail_options', {}) if Vips.at_least_libvips?(8, 8) thumbnail_options['no_rotate'] = input_options.fetch('no_rotate', false) if content.mime_type == 'image/jpeg' else thumbnail_options['auto_rotate'] = input_options.fetch('autorotate', true) if content.mime_type == 'image/jpeg' end thumbnail_options['height'] = thumbnail_options.fetch('height', dimensions.height.ceil) thumbnail_options['import_profile'] = CMYK_PROFILE_PATH if img.get('interpretation') == :cmyk thumbnail_options['size'] ||= case geometry when />\z/ then :down # do_not_resize_if_image_smaller_than_requested when /<\z/ then :up # do_not_resize_if_image_larger_than_requested else :both end filename += "[page=#{input_options[:page]}]" if content.mime_type == 'application/pdf' thumbnail_options = thumbnail_options.each_with_object({}) { |(k, v), memo| memo[k.to_sym] = v } # symbolize thumb = ::Vips::Image.thumbnail(filename, dimensions.width.ceil, DragonflyLibvips.symbolize_keys(thumbnail_options)) content.update( thumb.write_to_buffer(".#{format}", DragonflyLibvips.symbolize_keys(output_options)), 'name' => "temp.#{format}", 'format' => format ) content.ext = format end
update_url(url_attributes, _, options = {})
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# File lib/dragonfly_libvips/processors/thumb.rb, line 76 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