# File lib/ruby-prof/printers/call_stack_printer.rb, line 180 def copy_image_files if @output.is_a?(File) target_dir = File.dirname(@output.path) image_dir = File.join(File.dirname(__FILE__), '..', 'images') %w(empty plus minus).each do |img| source_file = "#{image_dir}/#{img}.png" target_file = "#{target_dir}/#{img}.png" FileUtils.cp(source_file, target_file) unless File.exist?(target_file) end end end