Module: Jekyll::Filters::Dzsave

Defined in:
lib/jekyll/filters/dzsave.rb

Overview

Liquid filter for use in templates

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.jekyll_site=(site) ⇒ Object 



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# File 'lib/jekyll/filters/dzsave.rb', line 7

def self.jekyll_site=(site)
  @@jekyll_site = site
end

Instance Method Details

#dzsave(input, layout = 'google', tile_size = 256) ⇒ Object

Generates an image pyramid

See Also:



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# File 'lib/jekyll/filters/dzsave.rb', line 18

def dzsave(input, layout = 'google', tile_size = 256)
  return input unless input

  path = jekyll_site.in_source_dir(input)

  unless ::File.exist?(path)
    Jekyll.logger.warn 'Dzsave:', "#{input} doesn't exist"
    return input
  end

  image = Vips::Image.new_from_file(path, access: :sequential)

  if [image.width, image.height].min < tile_size
    Jekyll.logger.warn 'Dzsave:', "#{input} is smaller than tile size"
    return input
  end

  dir = ::File.dirname(input)
  previous_tiles = []

  Dir.chdir(jekyll_site.source) do
    previous_tiles = Dir.glob(::File.join(dir, '*', '**', '*.jpg'))
  end

  image.dzsave(dir, layout: layout, tile_size: tile_size)

  Dir.chdir(jekyll_site.source) do
    (Dir.glob(::File.join(dir, '*', '**', '*.jpg')) - previous_tiles).each do |tile|
      jekyll_site.static_files << Jekyll::StaticFile.new(jekyll_site, jekyll_site.source, ::File.dirname(tile), ::File.basename(tile))
    end
  end

  "#{dir}/{z}/{y}/{x}.jpg"
rescue Vips::Error => e
  Jekyll.logger.warn 'Dzsave:', "Failed to process #{input}: #{e.message}"
  input
end

#jekyll_site ⇒ Object 



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# File 'lib/jekyll/filters/dzsave.rb', line 11

def jekyll_site
  @@jekyll_site
end