lib/attach_it/storage/storage.rb in mm-attach-it-0.1.2 vs lib/attach_it/storage/storage.rb in mm-attach-it-0.1.3

@@ -1,10 +1,30 @@
 require 'RMagick'
 
 class Storage
 
+  def transform(style_value = nil, filename = nil)
+    style_value.gsub!(/\s+/, '')
+
+    if style_value.match(/^(\d+)x(\d+)\#$/)
+      crop($1.to_i, $2.to_i, filename)
+    else
+      resize(style_value, filename)
+    end
+  end
+
+  private
   def resize(style_value = nil, filename = nil)
     new_image = Magick::Image.read(filename).first
     new_image.change_geometry!(style_value) { |cols, rows, img| img.resize!(cols, rows) }
+    new_image
+  end
+
+  def crop(new_width = nil, new_height = nil, filename = nil)
+    new_image = Magick::Image.read(filename).first
+    width = new_image.columns
+    height = new_image.rows
+    new_image.crop!(width/2 - new_width/2, height/2 - new_height/2, new_width, new_height)
+    new_image
   end
 
 end