bingo card generator

bingo.rb

require 'prawn'
PrawnSplitWord = Class.new(StandardError)

module Prawn
  module Core
    module Text
      module Formatted #:nodoc:
        class LineWrap #:nodoc:
          def wrap_by_char(segment)
            raise PrawnSplitWord
          end
        end
      end
    end
  end
end

module Prawn
  module Text
    module Formatted
      class Box
        def shrink_to_fit(text)
          begin
            wrap(text)
          rescue PrawnSplitWord
            @everything_printed = false
          end
          until @everything_printed || @font_size <= @min_font_size
            @font_size = [@font_size - 0.5, @min_font_size].max
            @document.font_size = @font_size
            begin
              wrap(text)
            rescue PrawnSplitWord
              @everything_printed = false
            end
          end
        end
      end
    end
  end
end

word_list = "
A Beautiful Mind
A Mighty Heart
Apollo 13
Black Hawk Down
Braveheart
Brian's Song
Catch Me If You Can
Coal Miner's Daughter
Flags of Our Fathers
Gandhi
La Bamba
Lean On Me
Men of Honor
Norma Rae
Patch Adams
Ray
Remember The Titans
Rudy
Schindler's List
The Aviator
The Elephant Man
The Miracle Worker
The Pianist
The Pursuit of Happyness
Walk the Line
".strip.split("\n")

def generate_pdf(word_list, output_file, options = {})
  # Default options
  opts = {
    show_header: true,
    header: "BINGO",
    pages: 1
  }.merge(options)

  header = opts[:header].each_char.to_a

  Prawn::Document.generate(output_file) do
    font "Times-Roman"
    table_options = {
      header: true,
      cell_style: {
        width: 90,
        height: 90,
        align: :center,
        valign: :center,
        size: 32,
        overflow: :shrink_to_fit,
        min_font_size: 10,
        padding: 12
      },
      position: :center
    }
    1.upto(opts[:pages]) do |page|
      move_down 80
      table_data = word_list.shuffle.each_slice(5).to_a
      if opts[:show_header]
        table_data = [header] + table_data
      end
      table table_data, table_options do
        row(0).size = 64
      end
      start_new_page
    end
  end
end

generate_pdf word_list, '/home/hb/deneme.pdf', pages: 10