test/fixtures/files/rails.pdf test/pdf_attachment_test.rb @@ -1,3 +1,6 @@ +* Sep 18 2008 * +* support thumbnailing of PDF files into PNG files with rmagick processor + * Apr 17 2008 * * amazon_s3.yml is now passed through ERB before being passed to AWS::S3 [François Beausoleil] CHANGELOG @@ -26,30 +26,31 @@ In the model there are two methods made available by this plugins: has_attachmen has_attachment(options = {}) This method accepts the options in a hash: - :content_type # Allowed content types. - # Allows all by default. Use :image to allow all standard image types. - :min_size # Minimum size allowed. - # 1 byte is the default. - :max_size # Maximum size allowed. - # 1.megabyte is the default. - :size # Range of sizes allowed. - # (1..1.megabyte) is the default. This overrides the :min_size and :max_size options. - :resize_to # Used by RMagick to resize images. - # Pass either an array of width/height, or a geometry string. - :thumbnails # Specifies a set of thumbnails to generate. - # This accepts a hash of filename suffixes and RMagick resizing options. - # This option need only be included if you want thumbnailing. - :thumbnail_class # Set which model class to use for thumbnails. - # This current attachment class is used by default. - :path_prefix # path to store the uploaded files. - # Uses public/#{table_name} by default for the filesystem, and just #{table_name} for the S3 backend. - # Setting this sets the :storage to :file_system. - :partition # Partiton files in directories like /0000/0001/image.jpg. Default is true. - :storage # Specifies the storage system to use.. - # Defaults to :db_file. Options are :file_system, :db_file, and :s3. - :processor # Sets the image processor to use for resizing of the attached image. - # Options include ImageScience, Rmagick, and MiniMagick. Default is whatever is installed. - + :content_type # Allowed content types. + # Allows all by default. Use :image to allow all standard image types. + :min_size # Minimum size allowed. + # 1 byte is the default. + :max_size # Maximum size allowed. + # 1.megabyte is the default. + :size # Range of sizes allowed. + # (1..1.megabyte) is the default. This overrides the :min_size and :max_size options. + :resize_to # Used by RMagick to resize images. + # Pass either an array of width/height, or a geometry string. + :thumbnails # Specifies a set of thumbnails to generate. + # This accepts a hash of filename suffixes and RMagick resizing options. + # This option need only be included if you want thumbnailing. + :thumbnail_class # Set which model class to use for thumbnails. + # This current attachment class is used by default. + :path_prefix # path to store the uploaded files. + # Uses public/#{table_name} by default for the filesystem, and just #{table_name} for the S3 backend. + # Setting this sets the :storage to :file_system. + :partition # Partiton files in directories like /0000/0001/image.jpg. Default is true. + :storage # Specifies the storage system to use.. + # Defaults to :db_file. Options are :file_system, :db_file, and :s3. + :processor # Sets the image processor to use for resizing of the attached image. + # Options include ImageScience, Rmagick, and MiniMagick. Default is whatever is installed. + :thumbnail_pdf_files # Defaults to false. Set to true if pdf files should be converted into PNG file thumbnails + # only supported for rmagick processor Examples: has_attachment :max_size => 1.kilobyte README @@ -1,3 +1,5 @@ +require 'ruby-debug' + module Technoweenie # :nodoc: module AttachmentFu # :nodoc: @@default_processors = %w(ImageScience Rmagick MiniMagick Gd2 CoreImage) @@ -232,6 +234,7 @@ module Technoweenie # :nodoc: # Returns true/false if an attachment is thumbnailable. A thumbnailable attachment has an image content type and the parent_id attribute. def thumbnailable? + #debugger (image? || (pdf? && attachment_options[:thumbnail_pdf_files] && supports_pdf?)) && respond_to?(:parent_id) && parent_id.nil? end @@ -251,7 +254,7 @@ module Technoweenie # :nodoc: ext.sub!(/gif$/, 'png') if attachment_options[:processor] == "ImageScience" # Change the output extension if PDFs are being converted - ext = ".png" if attachment_options[:thumbnail_pdf_files] + ext = ".png" if attachment_options[:thumbnail_pdf_files] && respond_to?(:parent) && parent && parent.pdf? "#{basename}_#{thumbnail}#{ext}" end @@ -415,10 +418,17 @@ module Technoweenie # :nodoc: # validates the size and content_type attributes according to the current model's options def attachment_attributes_valid? - [:size, :content_type].each do |attr_name| + + [:size].each do |attr_name| enum = attachment_options[attr_name] - #errors.add attr_name, ActiveRecord::Errors.default_error_messages[:inclusion] unless enum.nil? || enum.include?(send(attr_name)) + errors.add attr_name, ActiveRecord::Errors.default_error_messages[:inclusion] unless enum.nil? || enum.include?(send(attr_name)) end + #validate content type separately because a PDF could have a thumbnail of type image/png which the model may not allow + content_types = attachment_options[:content_type] + content_types << "image/png" if content_types && self.respond_to?(:parent) && self.parent && self.parent.pdf? && process_pdfs? + errors.add :content_type, ActiveRecord::Errors.default_error_messages[:inclusion] unless content_types.nil? || content_types.include?(send(:content_type)) + + end # Initializes a new thumbnail with the given suffix. lib/technoweenie/attachment_fu.rb @@ -24,7 +24,7 @@ module Technoweenie # :nodoc: end def supports_pdf? - true + false end end lib/technoweenie/attachment_fu/processors/mini_magick_processor.rb @@ -50,7 +50,7 @@ module Technoweenie # :nodoc: img.change_geometry(size.to_s) { |cols, rows, image| image.resize!(cols<1 ? 1 : cols, rows<1 ? 1 : rows) } end img.strip! unless attachment_options[:keep_profile] - if parent && parent.pdf? && process_pdfs? + if respond_to?(:parent) && parent && parent.pdf? && process_pdfs? output_format = 'PNG' else output_format = img.format lib/technoweenie/attachment_fu/processors/rmagick_processor.rb @@ -20,6 +20,12 @@ class PdfAttachment < Attachment has_attachment :content_type => 'pdf' end +class PdfWithThumbsAttachment < Attachment + has_attachment :content_type => 'pdf', + :thumbnails => { :thumb => [50, 50]}, + :thumbnail_pdf_files => true +end + class DocAttachment < Attachment has_attachment :content_type => %w(pdf doc txt) end test/fixtures/attachment.rb a2891c676a4d81863c91c8039ec0cc49ada3f4f2 James Kebinger jkk@james-kebingers-macbook-pro.local http://github.com/jkebinger/attachment_fu/commit/b8df48db8b28ec46380de2daaac13c5d3ab5cfeb b8df48db8b28ec46380de2daaac13c5d3ab5cfeb 2008-09-18T14:04:13-07:00 2008-09-18T14:04:13-07:00 thumbnailing of PDF files to PNGs supported for rmagick aedaa43a2b5bdd06cc38602dcdbf267e27ce5da8 James Kebinger jkk@james-kebingers-macbook-pro.local