# File lib/pdf/writer.rb, line 2498
2498:       def [](pdf, info)
2499:         @style ||= DEFAULT_STYLE.dup
2500: 
2501:         case info[:status]
2502:         when :start, :start_line
2503:             # The beginning of the link. This should contain the URI for the
2504:             # link as the :params entry, and will also contain the value of
2505:             # :cbid.
2506:           @links ||= {}
2507: 
2508:           @links[info[:cbid]] = {
2509:             :x         => info[:x],
2510:             :y         => info[:y],
2511:             :angle     => info[:angle],
2512:             :descender => info[:descender],
2513:             :height    => info[:height],
2514:             :uri       => info[:params]["uri"]
2515:           }
2516: 
2517:           pdf.save_state
2518:           pdf.fill_color @style[:text_color] if @style[:text_color]
2519:           if @style[:draw_line]
2520:             pdf.stroke_color  @style[:color] if @style[:color]
2521:             sz = info[:height] * @style[:factor]
2522:             pdf.stroke_style! StrokeStyle.new(sz, @style[:line_style])
2523:           end
2524:         when :end, :end_line
2525:             # The end of the link. Assume that it is the most recent opening
2526:             # which has closed.
2527:           start = @links[info[:cbid]]
2528:             # Add underlining.
2529:           theta = PDF::Math.deg2rad(start[:angle] - 90.0)
2530:           if @style[:draw_line]
2531:             drop  = start[:height] * @style[:factor] * 1.5
2532:             drop_x = Math.cos(theta) * drop
2533:             drop_y = -Math.sin(theta) * drop
2534:             pdf.move_to(start[:x] - drop_x, start[:y] - drop_y)
2535:             pdf.line_to(info[:x] - drop_x, info[:y] - drop_y).stroke
2536:           end
2537:           pdf.add_link(start[:uri], start[:x], start[:y] +
2538:                        start[:descender], info[:x], start[:y] +
2539:                        start[:descender] + start[:height])
2540:           pdf.restore_state
2541:         end
2542:       end