lib/middleware/pad.rb in tracksperanto-2.9.5 vs lib/middleware/pad.rb in tracksperanto-2.9.6

@@ -1,12 +1,18 @@
 # -*- encoding : utf-8 -*-
 # This middleware pads the comp or crops it if given negative values. Use it to say unpad
 # some fucked-up telecine transfers. The padding is in fractional units of the total width
 # and height
 class Tracksperanto::Middleware::Pad < Tracksperanto::Middleware::Base
-  attr_accessor :left_pad, :right_pad, :top_pad, :bottom_pad
   
-  cast_to_float :left_pad, :right_pad, :top_pad, :bottom_pad
+  parameter :top_pad,     :cast => :float, :desc => "Top padding (fraction of original size)"
+  parameter :left_pad,    :cast => :float, :desc => "Left padding (fraction of original size)"
+  parameter :right_pad,   :cast => :float, :desc => "Right padding (fraction of original size)"
+  parameter :bottom_pad,  :cast => :float, :desc => "Bottom padding (fraction of original size)"
+  
+  def self.action_description
+    "Pad or crop the image by a fraction of it's original size"
+  end
   
   def start_export(w, h)
     @shift_left, @shift_bottom = w * left_pad, h * bottom_pad
     w_mult = 1 + left_pad + right_pad
     h_mult = 1 + bottom_pad + top_pad