From: Kouhei Sutou <kou@...>
Date: 2007-03-01T12:56:24+09:00
Subject: Re: PDF Appender?

Hi,

2007/3/1, rpardee@gmail.com <rpardee@gmail.com>:

> Let's say I had a .pdf file and a .txt file, and I wanted to append
> the contents of the text to the .pdf.  The text doesn't have to look
> pretty, it just has to be searchable (the pdf has an image of the text
> in the text file).
>
> I looked at PDF::Writer, but I'm not seeing a way to open an
> existing .pdf.  Have I missed it, or do I need to use some other
> library or...?

You can do the task with Ruby/Poppler, Ruby/Pango and rcairo:

---
surface = Cairo::PDFSurface.new(...)
context = Cairo::Context.new(surface)

document = Poppler::Document.new(...)
document.each do |page|
  context.render_poppler_page(page)
  context.show_page
end

text = File.read(...)
layout = context.create_pango_layout
layout.text = text
layout.width = ... * Pango::SCALE
context.show_pango_layout(layout)

context.show_page

surface.finish
---

Some sample scripts may help you:
  http://ruby-gnome2.cvs.sourceforge.net/ruby-gnome2/ruby-gnome2/poppler/sample/
  http://webcvs.cairographics.org/rcairo/samples/


Thanks,
--
kou