Программирование на языке Ruby

 end
end
pdf.fill_color Color::RGB::Black
# Правый верхний: Grampian Highlands (UR).
quadrant(pdf, :ur) do
 pdf.image('grampian-highlands.jpg',
  :height => pdf.margin_height,
  :resize => :width)
 pdf.text('The Grampian Highlands, Scotland',
  justification => :center,
  :font_size => 36)
 pdf.text('01August 200101', :justification => :center,
  :font_size => 24)
 pdf.move_pointer(24)
 info = <<-'EOS'.split($/).join(' ').squeeze(' ')
This picture was taken during a driving vacation through the
Scottish highlands in August 2001 by Austin Ziegler.
 EOS
 pdf.text(info, :justification => :full, :font_size => 16,
  :left => 100, :right => 100)
end
pdf.fill_color Color::RGB::Black
# Левый нижний: Individual-I (LL).
quadrant(pdf, :ll) do
 require 'color/palette/monocontrast'
 class IndividualI
  def initialize(size = 100)
   @size = size
  end
  # Размер буквы 'i' в пунктах.
  attr_accessor :size
  def half_i(pdf)
   pdf.move_to(0, 82)
   pdf.line_to(0, 78)
   pdf.line_to(9, 78)
   pdf.line_to(9, 28)
   pdf.line_to(0, 28)
   pdf.line_to(0, 23)
   pdf.line_to(18, 23)
   pdf.line_to(18, 82)
   pdf.fill
  end
  private :half_i
  def draw(pdf, x, y)
   pdf.save_state
   pdf.translate_axis(x, y)
   pdf.scale_axis(1 * (@size / 100.0), -1 * (@size / 100.0))
   pdf.circle_at(20, 10, 7.5)
   pdf.fill
   half_i(pdf)
   pdf.translate_axis(40, 0)
   pdf.scale_axis(-1, 1)
   half_i(pdf)
   pdf.restore_state
  end
 end
 ii = IndividualI.new(24)
 x = pdf.absolute_left_margin
 y = pdf.absolute_top_margin
 bg = Color::RGB.from_fraction(rand, rand, rand)
 fg = Color::RGB.from_fraction(rand, rand, rand)
 pal = Color::Palette::MonoContrast.new(bg, fg)
 sz = 24
 (-5..5).each do |col|
  pdf.fill_color pal.background[col]
  ii.draw(pdf, x, y)
  ii.size += sz
  x += sz / 2.0
  y -= sz / 2.0
  pdf.fill_color
  pal.foreground[col]
  ii.draw(pdf, x, y)
  x += sz / 2.0
  y -= sz / 2.0
  ii.size += sz
 end
end
pdf.fill_color Color::RGB::Black
# Правый нижний: Gettysburg Address (LR).