Class: Barby::PDFWriterOutputter

Inherits:
Outputter show all
Defined in:
lib/barby/outputter/pdfwriter_outputter.rb

Overview

Annotates a PDFWriter document with the barcode

Registers the annotate_pdf method

Instance Attribute Summary collapse

Attributes inherited from Outputter

#barcode

Instance Method Summary collapse

Methods inherited from Outputter

#boolean_groups, #booleans, #encoding, #initialize, register, #two_dimensional?

Constructor Details

This class inherits a constructor from Barby::Outputter

Instance Attribute Details

#height ⇒ Object

Returns the value of attribute height.



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# File 'lib/barby/outputter/pdfwriter_outputter.rb', line 12

def height
  @height
end

#x ⇒ Object

Returns the value of attribute x.



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# File 'lib/barby/outputter/pdfwriter_outputter.rb', line 12

def x
  @x
end

#xdim ⇒ Object

Returns the value of attribute xdim.



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# File 'lib/barby/outputter/pdfwriter_outputter.rb', line 12

def xdim
  @xdim
end

#y ⇒ Object

Returns the value of attribute y.



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# File 'lib/barby/outputter/pdfwriter_outputter.rb', line 12

def y
  @y
end

Instance Method Details

#annotate_pdf(pdf, options = {}) ⇒ Object

Annotate a PDFWriter document with the barcode

Valid options are:

x, y - The point in the document to start rendering from height - The height of the bars in PDF units xdim - The X dimension in PDF units



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# File 'lib/barby/outputter/pdfwriter_outputter.rb', line 22

def annotate_pdf(pdf, options={})
  with_options options do

    xpos, ypos = x, y
    orig_xpos = xpos

    if barcode.two_dimensional?
      boolean_groups.reverse_each do |groups|
        groups.each do |bar,amount|
          if bar
            pdf.move_to(xpos, ypos).
              line_to(xpos, ypos+xdim).
              line_to(xpos+(xdim*amount), ypos+xdim).
              line_to(xpos+(xdim*amount), ypos).
              line_to(xpos, ypos).
              fill
          end
          xpos += (xdim*amount)
        end
        xpos = orig_xpos
        ypos += xdim
      end
    else
      boolean_groups.each do |bar,amount|
        if bar
          pdf.move_to(xpos, ypos).
            line_to(xpos, ypos+height).
            line_to(xpos+(xdim*amount), ypos+height).
            line_to(xpos+(xdim*amount), ypos).
            line_to(xpos, ypos).
            fill
        end
        xpos += (xdim*amount)
      end
    end

  end

  pdf
end