Module: JekyllIS::Images::Image::SEO

Extended by:
SEO
Includes:
Cache, Magick
Included in:
JekyllIS::Images::Image, SEO
Defined in:
lib/jekyll-is/images/image/seo.rb

Instance Method Summary collapse

Methods included from Magick

#magick_convert, #magick_generate

Methods included from Cache

#cached_file, #clean_unused_files, #magick_image, #restore_static_files, #source_digest, #static_info

Instance Method Details

#replace_page_image(site, page) ⇒ void

This method returns an undefined value.

Parameters:

  • site (Jekyll::Site)
  • page (Jekyll::Page) 


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# File 'lib/jekyll-is/images/image/seo.rb', line 21

def replace_page_image site, page
  source = page.data['image']
  return source if source == nil || source.empty? || source.start_with?('/')

  context = JekyllIS::Images::Context[site, page]
  format             = context.config(IMAGE_PARAMS, 'format')
  crop               = context.config(IMAGE_PARAMS, 'crop')
  width              = context.config(IMAGE_PARAMS, 'width')&.to_i
  height             = context.config(IMAGE_PARAMS, 'height')&.to_i
  overlay_width      = context.config(IMAGE_PARAMS, 'overlay', 'width')&.to_i
  bottom_height      = context.config(IMAGE_PARAMS, 'overlay', 'bottom')&.to_i
  top_height         = context.config(IMAGE_PARAMS, 'overlay', 'top')&.to_i
  padding            = context.config(IMAGE_PARAMS, 'overlay', 'padding')&.to_i
  overlay_background = context.config(IMAGE_PARAMS, 'overlay', 'background')
  overlay_foreground = context.config(IMAGE_PARAMS, 'overlay', 'foreground')
  caption_font       = context.config(IMAGE_PARAMS, 'font', 'caption')
  date_font          = context.config(IMAGE_PARAMS, 'font', 'date')      || caption_font
  date_font_size     = context.config(IMAGE_PARAMS, 'font', 'date_size') || 24
  site_font          = context.config(IMAGE_PARAMS, 'font', 'site')      || date_font
  site_font_size     = context.config(IMAGE_PARAMS, 'font', 'site_size') || date_font_size
  salt               = context.config(IMAGE_PARAMS, 'salt')
  caption            = context.config(IMAGE_PARAMS, 'caption')           || page.data['title']
  site_title         = context.config(IMAGE_PARAMS, 'site')              || site.config['title']
  date               = context.config(IMAGE_PARAMS, 'date')              || page.data['date']
  date_format        = context.config(IMAGE_PARAMS, 'date_format')       || '%Y-%m-%d'
  date = date.strftime date_format if date.is_a?(Time) || date.is_a?(Date)
  options = context.options format
  params = {
    format:, crop:, width:, height:,
    overlay_width:, bottom_height:, top_height:, padding:,
    overlay_background:, overlay_foreground:,
    caption_font:, date_font:, date_font_size:, site_font:, site_font_size:,
    salt:,
    caption:, site: site_title, date:, date_format:,
    options:
  }

  digest = source_digest(context, source, **params)
  info = static_info context, digest, params[:format] do |full|
    begin
      base = base_image context, source, params
      base.combine_options do |img|
        img.repage '+0+0'
        img.gravity 'Center'
        img.extent "#{ width }:#{ height }"
        img.resize "#{ width }x#{ height }"
      end
      bottom = background_image context, params[:bottom_height], params
      result = base.composite bottom do |img|
        img.gravity 'South'
        img.geometry "+0+#{ params[:padding] }"
      end
      caption_img = caption_image context, params
      result = result.composite caption_img do |img|
        img.gravity 'South'
        img.geometry "+0+#{ 2 * params[:padding] }"
      end
      top = background_image context, params[:top_height], params
      result = result.composite top do |img|
        img.gravity 'North'
        img.geometry "+0+#{ params[:padding] }"
      end
      meta = meta_image context, params
      result = result.composite meta do |img|
        img.gravity 'North'
        img.geometry "+0+#{ params[:padding] }"
      end

      result.format format
      result.strip
      result.write full
    ensure
      base&.destroy!
      bottom&.destroy!
      caption_img&.destroy!
      top&.destroy!
      meta&.destroy!
      result&.destroy!
    end
  end

  page.data['image'] = info.url
  return info.url

end