Dragonfly PDF

Dragonfly PDF analysers and processors.

Dependencies

• ImageMagick
• GhostScript

Installation

Add this line to your application's Gemfile:

gem 'dragonfly_pdf'

And then execute:

$ bundle

Or install it yourself as:

$ gem install dragonfly_pdf

Usage

The analyser and processors are added by configuring the plugin

Dragonfly.app.configure do
  plugin :pdf
end

Analysers

PDF properties

Reads properties from a PDF.

pdf.pdf_properties

It returns a hash of properties:

{
    page_count: 4,
    page_dimensions: [[210.0, 297.0], [210.0, 297.0], [210.0, 297.0], [210.0, 297.0]],
    page_numbers: [1, 2, 3, 4],
    widths: [210.0, 210.0, 210.0, 210.0],
    heights: [297.0, 297.0, 297.0, 297.0],
    aspect_ratios: [0.71, 0.71, 0.71, 0.71]
}

Processors

Page

Extracts page from PDF.

pdf.page(page_number=1)

Page Thumb

Generates thumbnail of a specified page, in defined density (dpi) and format.

pdf.page_thumb(page_number=1, opts={})

The available options and their default values are:

{
    density: 600,
    format: :png,
}

Subset Fonts

Subset fonts in PDF.

pdf.subset_fonts

Contributing

1. Fork it ( https://github.com/tomasc/dragonfly_pdf/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request