Module: Visual

Included in:
Barcode
Defined in:
lib/visual.rb

Overview

Methods to visualize a barcode

Instance Method Summary collapse

Instance Method Details

#to_pdf(pdf, options = {}) ⇒ Object

Adds a barcode to a pdf file



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# File 'lib/visual.rb', line 7

def to_pdf(pdf, options={})
  pdf.undash
  barcode(options)
  @graph[:bars].each do |b|
    pdf.move_to(b[:x],             @graph[:y])
    pdf.line_to(b[:x],             @graph[:y] + @graph[:height])
    pdf.line_to(b[:x] + b[:width], @graph[:y] + @graph[:height])
    pdf.line_to(b[:x] + b[:width], @graph[:y])
    pdf.line_to(b[:x],             @graph[:y])
    pdf.fill
  end
  if @options[:bearer] == :frame
    pdf.move_to(@options[:x], @graph[:y])
    pdf.line_to(@options[:x], 
                @graph[:y] + @graph[:height])
    pdf.line_to(@options[:x] + 2 * @options[:quiet] + @graph[:graph_width],
                @graph[:y] + @graph[:height])
    pdf.line_to(@options[:x] + 2 * @options[:quiet] + @graph[:graph_width],
                @graph[:y]) 
    pdf.line_to(@options[:x],
                @graph[:y])
  elsif @options[:bearer] == :rule
    pdf.move_to(@options[:x], 
                @options[:y] + @options[:bottom_margin] + @graph[:height])
    pdf.line_to(@options[:x] + 2 * @options[:quiet] + @graph[:graph_width],
                @options[:y] + @options[:bottom_margin] + @graph[:height])
    pdf.move_to(@options[:x] + 2 * @options[:quiet] + @graph[:graph_width],
                @options[:y] + @options[:bottom_margin]) 
    pdf.line_to(@options[:x],
                @options[:y] + @options[:bottom_margin])
  end
  @graph
end