Class: PDFThumbnail::Generator

Inherits:
Jekyll::Generator
  • Object
show all
Includes:
PDFThumbnail
Defined in:
lib/jekyll-pdf-thumbnail.rb

Overview

The PDF thumbnail generator

Constant Summary

Constants included from PDFThumbnail

CACHE_DIR, HASH_LENGTH

Instance Method Summary collapse

Methods included from PDFThumbnail

#_dest_filename, #_must_create?

Instance Method Details

#generate(site) ⇒ Object 



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# File 'lib/jekyll-pdf-thumbnail.rb', line 34

def generate(site)
  # Ensure the cache dir exists
  full_cache_path = File.join(site.source, CACHE_DIR)
  FileUtils.mkdir_p(full_cache_path)

  site.static_files.each do |static_file|
    if static_file.extname.downcase == ".pdf"
      full_pdf_path = File.join(site.source, static_file.relative_path)
      thumb = _dest_filename(full_pdf_path)
      full_thumb_path = File.join(full_cache_path, thumb)
      rel_thumb_path = File.join(CACHE_DIR, thumb)
      if _must_create?(full_pdf_path, full_thumb_path)
        puts "Creating thumbnail of' #{static_file.relative_path}' to '#{rel_thumb_path}'"
        PDFToImage.open(full_pdf_path).first.resize('50%').save(full_thumb_path)
        site.static_files << Jekyll::StaticFile.new(site, site.source, CACHE_DIR, thumb)
      end
    end
  end
end