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Contents
module Medivo
class PdfGenerator
def self.tmp_pdf(auto_close=true)
pdf = Tempfile.new('pdf', :encoding => 'ascii-8bit')
yield pdf
# if you don't close here the helper method pdf_to_text does not work
# its also a good idea to close the temp file anyway
pdf.close if auto_close
pdf
end
##
# @param file_path [String] path to pdf file with variable fields
# @param variables [Hash] the hash of variables to fill in
#
# @return [File] the pdf file
#
def self.variable_fields(file_path, variables)
raise "variables #{variables} should be a hash" unless variables.is_a? Hash
tmp_pdf do |pdf|
fdf = FdfGenerator.file(variables)
system 'pdftk', file_path, 'fill_form', fdf.path, 'output', pdf.path, 'flatten'
fdf.unlink
end
end
##
# @param file_path [String] path to pdf file with variable fields
# @param variables [Hash] the hash of variables to fill in
# @param image_data [Array] of image info like:
# [ {:path=>'/absolute/path/to/image1.jpg', :options=>{ :at=>[x_pos, y_pos]} },
# {:path=>'/absolute/path/to/image2.jpg', :options=>{ :at=>[20, 800], :width=>20, :height=>40} }
# ]
#
# @return [File] pdf
#
# NOTE: you need to create tmp dir in home directory for temporary image files
#
def self.variable_fields_with_images(file_path, variables, image_data=[])
content_pdf = variable_fields(file_path, variables)
image_path = "#{ENV['HOME']}/tmp/image_path_#{SecureRandom.hex(6)}_#{Time.now.to_i}.pdf"
img_pdf = Prawn::Document.generate(image_path) do |pdf|
image_data.each do |data|
pdf.image data[:path], data[:options]
end
end
pdf = tmp_pdf do |pdf|
system 'pdftk', content_pdf.path, 'stamp', img_pdf.path, 'output', pdf.path
end
content_pdf.unlink
File.delete(img_pdf.path)
pdf
end
end
end
Version data entries
24 entries across 24 versions & 1 rubygems