application_helper.rb

# Methods added to this helper will be available to all templates in the application.
module ApplicationHelper
  def mark_image(mark, size = 70)
    if mark
      options = {:size => "#{size}x#{size}", :class => "mark"}
      if mark.position_x && mark.position_y
        options[:style] = "margin-left: #{mark.position_x-size/2-6}px; margin-top: #{mark.position_y-size/2-6}px;"
      end
      image_tag (mark.skip? ? "skip.png" : (mark.image_path || "question_mark.png")), options
    end
  end
  
  def points(num)
    if num > 0
      "+#{num}"
    elsif num.zero?
      num.to_s
    else
      content_tag(:span, num, :class => "negative")
    end
  end
  
  def stamp_owner?
    @stamp && @stamp.user == current_user
  end
end