Contents

module Gluttonberg
  module Library
    module QuickMagick
      class ImageList

        def initialize(*filenames)
          @images = filenames.inject([]) do |image_list, filename|
            image_list + QuickMagick::Image.read(filename)
          end
        end

        # Delegate Array methods
        Array.public_instance_methods(false).each do |array_public_method|
          class_eval do
            define_method array_public_method do |*args|
              @images.send array_public_method, *args
            end
          end
        end
      
        # Delegate Image methods
        QuickMagick::Image.public_instance_methods(false).each do |image_public_method|
          class_eval do
            define_method image_public_method do |*args|
              @images.each do |image|
                image.send image_public_method, *args
              end
            end
          end
        end

        # Saves all images in the list to the output filename
        def save(output_filename)
          command_line = ""
          @images.each do |image|
            command_line << image.command_line
          end
          `convert #{command_line} "#{output_filename}"`
        end
    
        alias write save
    
        # Returns an array of images for the images stored
        def to_ary
          @images
        end
    
        alias to_a to_ary
    
        def <<(more_images)
          case more_images
            when QuickMagick::Image then @images << more_images
            # Another image list
            when QuickMagick::ImageList then self << more_images.to_a
            when Array then @images += more_images
            else raise QuickMagick::QuickMagickError, "Invalid argument type"
          end
          self
        end
      end

    end
  end # assetlibrary  
end #gluttonberg  

Version data entries

3 entries across 3 versions & 1 rubygems

Version	Path
gluttonberg-core-3.0.2	lib/gluttonberg/library/quick_magick/image_list.rb
gluttonberg-core-3.0.1	lib/gluttonberg/library/quick_magick/image_list.rb
gluttonberg-core-3.0.0	lib/gluttonberg/library/quick_magick/image_list.rb