Module: SrcsetImages::ViewHelpers

Defined in:
lib/middleman-srcset_images/view_helpers.rb

Instance Method Summary collapse

Instance Method Details

#image_tag(path, options = {}) ⇒ Object

options can be:

size: pick an image version link: Set to an url to link to



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# File 'lib/middleman-srcset_images/view_helpers.rb', line 11

def image_tag(path, options = {})
  # allow for images in article directories to be referenced just by file name
  unless path[?/]
    page_path = current_page.path
    dir = File.dirname page_path
    path = File.join dir, File.basename(page_path, '.html'), path
  end

  # collect srcset info
  options = options.dup
  ext = app.extensions[:srcset_images]
  rel_path = path.sub(/\A\/?/, "")
  versions = nil

  if size = options.delete(:size)
    options[:sizes] = ext.sizes[size]

    scaled_images = ext.scaled_images[rel_path]
    versions = scaled_images.select{|v| v.name == size.to_s}
    unless versions.any?
      versions = scaled_images.select{|v| v.default_for_orientation?}
    end

    if versions.any?
      path = (versions.detect{|v|v.default?} || versions.first).resized_img_path
      options[:srcset] = versions.map { |v|
        "#{v.resized_img_path} #{v.width}w"
      }.join ", "
    end
  end

  link = options.delete(:link)
  img = super path, options

  if link
    link_to img, link
  else
    img
  end
end