# File lib/scruffy/helpers/canvas.rb, line 28
      def bounds_for(canvas_size, position, size)
        return nil if (position.nil? || size.nil?)
        bounds = {}
        bounds[:x] = canvas_size.first * (position.first / 100.to_f)
        bounds[:y] = canvas_size.last  * (position.last  / 100.to_f)
        bounds[:width] = canvas_size.first * (size.first / 100.to_f)
        bounds[:height] = canvas_size.last * (size.last  / 100.to_f)
        bounds
      end