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Contents
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
self.temp_path = random_tempfile_filename
self.size = img.export(self.temp_path)
end
end
end
end
end
Version data entries
11 entries across 11 versions & 6 rubygems