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middleman--middleman/lib/middleman/features/automatic_image_sizes.rb
2009-12-28 12:03:38 -08:00

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1,004 B
Ruby

require "middleman/fastimage"
class Middleman::Base
alias_method :pre_automatic_image_tag, :image_tag
helpers do
def image_tag(path, params={})
if !options.respond_to?(:automatic_image_sizes?) || !options.automatic_image_sizes?
return pre_automatic_image_tag(path, params)
end
if (!params[:width] || !params[:height]) && !path.include?("://")
params[:alt] ||= ""
http_prefix = options.http_images_path rescue options.images_dir
begin
real_path = File.join(options.public, options.images_dir, path)
if File.exists? real_path
dimensions = Middleman::FastImage.size(real_path, :raise_on_failure => true)
params[:width] ||= dimensions[0]
params[:height] ||= dimensions[1]
end
rescue
end
capture_haml { haml_tag(:img, params.merge(:src => asset_url(path, http_prefix))) }
else
pre_automatic_image_tag(path, params)
end
end
end
end