# encoding: utf-8
#
# Prints a list of all of the glyphs that can be rendered by Adobe's built
# in fonts, along with their character widths and WinAnsi codes.  Be sure
# to pass these glyphs as UTF-8, and Prawn will transcode them for you.
#
require File.expand_path(File.join(File.dirname(__FILE__),
                                   %w[.. example_helper]))

filename = File.basename(__FILE__).gsub('.rb', '.pdf')
Prawn::Example.generate(filename) do
  FONT_SIZE = 9.5

  x = 0
  y = bounds.top

  fields = [[20, :right], [8, :left], [12, :center], [30, :right], [8, :left],
            [0, :left]]

  font "Helvetica", :size => FONT_SIZE

  move_down 30
  text "(See next page for WinAnsi table)", :align => :center
  start_new_page

  Prawn::Encoding::WinAnsi::CHARACTERS.each_with_index do |name, index|
    next if name == ".notdef"
    y -= FONT_SIZE

    if y < FONT_SIZE
      y = bounds.top - FONT_SIZE
      x += 170
    end

    code = "%d." % index
    char = index.chr

    width = 1000 * width_of(char, :size => FONT_SIZE) / FONT_SIZE
    size  = "%d" % width

    data = [code, nil, char, size, nil, name]
    dx   = x
    fields.zip(data).each do |(total_width, align), field|
      if field
        width = width_of(field, :size => FONT_SIZE)

        case align
        when :left   then offset = 0
        when :right  then offset = total_width - width
        when :center then offset = (total_width - width)/2
        end

        text_box(field, :at => [dx + offset, y], :skip_encoding => true)
      end

      dx += total_width
    end
  end
end
