barcode_generator patch

diff -rupN barcode-generator.orig//lib/barcode_generator.rb barcode-generator/lib/barcode_generator.rb
--- barcode-generator.orig//lib/barcode_generator.rb	2010-03-16 08:35:52.000000000 +0100
+++ barcode-generator/lib/barcode_generator.rb	2010-03-16 08:39:19.249560958 +0100
@@ -17,7 +17,7 @@ module ActionView
     include ImageMagickWrapper
 
 
-    VALID_BARCODE_OPTIONS = [:encoding_format, :output_format, :width, :height, :scaling_factor, :xoff, :yoff, :margin	]
+    VALID_BARCODE_OPTIONS = [:encoding_format, :output_format, :width, :height, :scaling_factor, :xoff, :yoff, :margin, :resolution	, :antialias ]
     
     def barcode(id, options = {:encoding_format => DEFAULT_ENCODING })
 
@@ -51,7 +51,7 @@ module ActionView
         File.open(eps,'wb') do |eps_img| 
           Gbarcode.barcode_print(bc, eps_img, print_options)
           eps_img.close
-          convert_to_png(eps, out)
+          convert_to_png(eps, out, options[:resolution], options[:antialias])
         end
         
         #delete the eps image, no need to accummulate cruft
diff -rupN barcode-generator.orig//lib/imagemagick_wrapper.rb barcode-generator/lib/imagemagick_wrapper.rb
--- barcode-generator.orig//lib/imagemagick_wrapper.rb	2010-03-16 08:35:52.000000000 +0100
+++ barcode-generator/lib/imagemagick_wrapper.rb	2010-03-16 08:53:03.856561007 +0100
@@ -1,8 +1,15 @@
 module ImageMagickWrapper
    # call imagemagick library on commandline thus bypassing RMagick
    # memory leak hasseles :)
-   def convert_to_png(src, out)
+   def convert_to_png(src, out, resolution, antialias)
      #more options : convert +antialias -density 150 eps png
-     system("convert  #{src} #{out}")
+     options = []
+    if resolution.present?
+        options << "-density #{resolution}"
+    elsif antialias == 1
+       options << "+antialias" 
+    end
+    
+    system("convert #{options.collect.join(' ')} #{src} #{out}")
    end
 end