updated top the the new version of attachment_fu plugin to work out some

[selectricity-live] / vendor / plugins / attachment_fu / lib / technoweenie / attachment_fu / processors / gd2_processor.rb

diff --git a/vendor/plugins/attachment_fu/lib/technoweenie/attachment_fu/processors/gd2_processor.rb b/vendor/plugins/attachment_fu/lib/technoweenie/attachment_fu/processors/gd2_processor.rb
new file mode 100644 (file)
index 0000000..6d8e7ba
--- /dev/null
+++ b/vendor/plugins/attachment_fu/lib/technoweenie/attachment_fu/processors/gd2_processor.rb
@@ -0,0 +1,54 @@
+require 'rubygems'
+require 'gd2'
+module Technoweenie # :nodoc:
+  module AttachmentFu # :nodoc:
+    module Processors
+      module Gd2Processor
+        def self.included(base)
+          base.send :extend, ClassMethods
+          base.alias_method_chain :process_attachment, :processing
+        end
+        
+        module ClassMethods
+          # Yields a block containing a GD2 Image for the given binary data.
+          def with_image(file, &block)
+            im = GD2::Image.import(file)
+            block.call(im)
+          end
+        end
+
+        protected
+          def process_attachment_with_processing
+            return unless process_attachment_without_processing && image?
+            with_image do |img|
+              resize_image_or_thumbnail! img
+              self.width  = img.width
+              self.height = img.height
+              callback_with_args :after_resize, img
+            end
+          end
+
+          # Performs the actual resizing operation for a thumbnail
+          def resize_image(img, size)
+            size = size.first if size.is_a?(Array) && size.length == 1
+            if size.is_a?(Fixnum) || (size.is_a?(Array) && size.first.is_a?(Fixnum))
+              if size.is_a?(Fixnum)
+                # Borrowed from image science's #thumbnail method and adapted 
+                # for this.
+                scale = size.to_f / (img.width > img.height ? img.width.to_f : img.height.to_f)
+                img.resize!((img.width * scale).round(1), (img.height * scale).round(1), false)
+              else
+                img.resize!(size.first, size.last, false) 
+              end
+            else
+              w, h = [img.width, img.height] / size.to_s
+              img.resize!(w, h, false)
+            end
+            temp_paths.unshift random_tempfile_filename
+            self.size = img.export(self.temp_path)
+          end
+
+      end
+    end
+  end
+end
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