Class: Jekyll::Assets::HTML::IMG

Inherits:
Jekyll::Assets::HTML show all
Defined in:
lib/jekyll/assets/plugins/html/img.rb

Instance Attribute Summary

Attributes inherited from Jekyll::Assets::HTML

#doc

Attributes inherited from Extensible

#args, #asset, #ctx, #env, #jekyll

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Jekyll::Assets::HTML

build, #initialize, make_doc, skips, wants_xml?

Methods inherited from Extensible

for_args?, for_type?, inherited, #initialize, internal!, internal?, requirements

Constructor Details

This class inherits a constructor from Jekyll::Assets::HTML

Class Method Details

.for?(type:, args:) ⇒ Boolean

– –

Examples:

asset src srcset=“” %

asset src %

Returns:

  • (Boolean) 


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# File 'lib/jekyll/assets/plugins/html/img.rb', line 59

def self.for?(type:, args:)
  return false unless super
  return false if args.key?(:pic)
  return false if args.key?(:inline) &&
      type == "image/svg+xml"

  true
end

Instance Method Details

#complex(doc) ⇒ Object

–



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# File 'lib/jekyll/assets/plugins/html/img.rb', line 24

def complex(doc)
  img = doc.img @args.to_h(html: true, skip: HTML.skips)
  Array(args[:srcset][:width]).each do |w|
    dimensions, density, type = w.to_s.split(%r!\s+!, 3)

    img["srcset"] ||= ""
    img["srcset"] += ", #{path(dimensions: dimensions, type: type)} "
    img["srcset"] += density || "#{dimensions}w"
    img["srcset"] = img["srcset"]
      .gsub(%r!^,\s*!, "")
  end
end

#path(dimensions:, type: nil) ⇒ Object

–



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# File 'lib/jekyll/assets/plugins/html/img.rb', line 38

def path(dimensions:, type: nil)
  args_ =  "#{args[:argv1]} @path"
  args_ += " magick:resize=#{dimensions}"
  args_ += " magick:format=#{type}" if type
  args_ += " @optim" if args.key?(:optim)

  pctx = Liquid::ParseContext.new
  tag = Tag.new("asset", args_, pctx)
  tag.render(ctx)
end

#run ⇒ Object

–



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# File 'lib/jekyll/assets/plugins/html/img.rb', line 15

def run
  Nokogiri::HTML::Builder.with(doc) do |d|
    srcset? ? complex(d) : d.img(args.to_h({
      html: true, skip: HTML.skips
    }))
  end
end

#srcset? ⇒ Boolean

–

Returns:

  • (Boolean) 


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# File 'lib/jekyll/assets/plugins/html/img.rb', line 50

def srcset?
  args.key?(:srcset) && args[:srcset]
    .key?(:width)
end