Class: Ace::ImageThumbnailerFilter

Inherits:
Filter
  • Object
show all
Defined in:
lib/ace/filters/image_thumbnailer.rb

Instance Method Summary collapse

Methods inherited from Filter

#initialize

Constructor Details

This class inherits a constructor from Ace::Filter

Instance Method Details

#call(item, content) ⇒ Object 



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# File 'lib/ace/filters/image_thumbnailer.rb', line 30

def call(item, content)
  puts "~ [THUMB] #{item.original_path}"
  doc = Nokogiri::HTML(content)
  doc.css("thumbnail").each do |thumb|
    original_image_path = "content" + thumb[:src]
    thumbnail_path      = to_thumb("output"  + thumb[:src])
    generate_thumbnail(original_image_path, thumbnail_path, thumb[:src], thumb[:size] || 550)
    thumb.replace(thumbnail_nodeset(thumb[:src], doc))
  end
  doc.to_s
end

#thumbnail_nodeset(link, doc) ⇒ Object 



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# File 'lib/ace/filters/image_thumbnailer.rb', line 21

def thumbnail_nodeset(link, doc)
  link  = Nokogiri::XML::Node.new("a", doc)
  image = Nokogiri::XML::Node.new("img", doc)
  link.set_attribute("href", link)
  image.set_attribute("src", to_thumb(link))
  image.parent = link
  return link
end

#to_thumb(path) ⇒ Object 



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# File 'lib/ace/filters/image_thumbnailer.rb', line 17

def to_thumb(path)
  path.to_s.sub(/\.(\w+)$/, '_thumb.\1')
end