1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
|
#!/usr/bin/env ruby
begin
require 'origami'
rescue LoadError
$: << File.join(__dir__, '../../lib')
require 'origami'
end
include Origami
require 'stringio'
OUTPUT_FILE = "#{File.basename(__FILE__, ".rb")}.pdf"
EMBEDDED_NAME = "#{('a'..'z').to_a.sample(8).join}.pdf"
#
# Creates the nested document.
# A simple document displaying a message box.
#
output_str = StringIO.new
PDF.write(output_str) do |pdf|
pdf.onDocumentOpen Action::JavaScript "app.alert('Hello world!');"
end
output_str.rewind
# The envelope document.
pdf = PDF.new.append_page
# Create an object stream to compress objects.
objstm = ObjectStream.new
objstm.Filter = :FlateDecode
pdf.insert(objstm)
objstm.insert pdf.attach_file(output_str, register: true, name: EMBEDDED_NAME)
# Compress the page tree.
objstm.insert(pdf.Catalog.Pages)
objstm.insert(pdf.pages.first)
# Compress the name tree.
objstm.insert(pdf.Catalog.Names)
objstm.insert(pdf.Catalog.Names.EmbeddedFiles)
# Compress the catalog.
objstm.insert(pdf.Catalog)
pdf.pages.first.onOpen Action::GoToE[EMBEDDED_NAME]
pdf.save(OUTPUT_FILE, noindent: true)
|
