prawnpdf/prawn

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manual/repeatable_content/stamp.rb

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# frozen_string_literal: true

# Stamps should be used when you have content that will be included multiple
# times in a document. Its advantages over creating the content anew each time
# are:
#   1.  Faster document creation
#   2.  Smaller final document
#   3.  Faster display on subsequent displays of the repeated
# element because the viewer application can cache the rendered
# results
#
# The <code>create_stamp</code> method does just what it says. Pass it a block
# with the content that should be generated and the stamp will be created.
#
# There are two methods to render the stamp on a page <code>stamp</code> and
# <code>stamp_at</code>. The first will render the stamp as is while the
# second accepts a point to serve as an offset to the stamp content.

require_relative '../example_helper'

filename = File.basename(__FILE__).gsub('.rb', '.pdf')
Prawn::ManualBuilder::Example.generate(filename) do
  create_stamp('approved') do
    rotate(30, origin: [-5, -5]) do
      stroke_color 'FF3333'
      stroke_ellipse [0, 0], 29, 15
      stroke_color '000000'

      fill_color '993333'
      font('Times-Roman') do
        draw_text 'Approved', at: [-23, -3]
      end
      fill_color '000000'
    end
  end

  stamp 'approved'

  stamp_at 'approved', [200, 200]
end