+ # User images
+
+ def user_image(user, options = {})
+ options[:class] ||= "user_image border border-grey"
+ options[:alt] ||= ""
+
+ if user.image_use_gravatar
+ user_gravatar_tag(user, options)
+ elsif user.avatar.attached?
+ user_avatar_variant_tag(user, { :resize_to_limit => [100, 100] }, options)
+ else
+ image_tag "avatar_large.png", options.merge(:width => 100, :height => 100)
+ end
+ end
+
+ def user_thumbnail(user, options = {})
+ options[:class] ||= "user_thumbnail border border-grey"
+ options[:alt] ||= ""
+
+ if user.image_use_gravatar
+ user_gravatar_tag(user, options.merge(:size => 50))
+ elsif user.avatar.attached?
+ user_avatar_variant_tag(user, { :resize_to_limit => [50, 50] }, options)
+ else
+ image_tag "avatar_small.png", options.merge(:width => 50, :height => 50)
+ end
+ end
+
+ def user_thumbnail_tiny(user, options = {})
+ options[:class] ||= "user_thumbnail_tiny border border-grey"
+ options[:alt] ||= ""
+
+ if user.image_use_gravatar
+ user_gravatar_tag(user, options.merge(:size => 50))
+ elsif user.avatar.attached?
+ user_avatar_variant_tag(user, { :resize_to_limit => [50, 50] }, options)
+ else
+ image_tag "avatar_small.png", options.merge(:width => 50, :height => 50)
+ end
+ end
+
+ def user_image_url(user, options = {})
+ if user.image_use_gravatar
+ user_gravatar_url(user, options)
+ elsif user.avatar.attached?
+ polymorphic_url(user_avatar_variant(user, :resize_to_limit => [100, 100]), :host => Settings.server_url)
+ else
+ image_url("avatar_large.png")
+ end
+ end
+
+ # External authentication support
+
+ def openid_logo
+ image_tag "openid_small.png", :alt => t("sessions.new.openid_logo_alt"), :class => "openid_logo"
+ end
+
+ def auth_button(name, provider, options = {})
+ link_to(
+ image_tag("#{name}.svg", :alt => t("sessions.new.auth_providers.#{name}.alt"), :class => "rounded-3"),
+ auth_path(options.merge(:provider => provider)),
+ :method => :post,
+ :class => "auth_button",
+ :title => t("sessions.new.auth_providers.#{name}.title")
+ )
+ end
+
+ private
+
+ # Local avatar support
+ def user_avatar_variant_tag(user, variant_options, options)
+ if user.avatar.variable?
+ variant = user.avatar.variant(variant_options)
+ # https://stackoverflow.com/questions/61893089/get-metadata-of-active-storage-variant/67228171
+ if variant.processed?
+ metadata = variant.processed.send(:record).image.blob.metadata
+ if metadata["width"]
+ options[:width] = metadata["width"]
+ options[:height] = metadata["height"]
+ end
+ end
+ image_tag variant, options
+ else
+ image_tag user.avatar, options
+ end
+ end
+
+ def user_avatar_variant(user, options)
+ if user.avatar.variable?
+ user.avatar.variant(options)
+ else
+ user.avatar
+ end
+ end
+
+ # Gravatar support
+
+ # See http://en.gravatar.com/site/implement/images/ for details.
+ def user_gravatar_url(user, options = {})
+ size = options[:size] || 100
+ hash = Digest::MD5.hexdigest(user.email.downcase)
+ default_image_url = image_url("avatar_large.png")
+ "#{request.protocol}www.gravatar.com/avatar/#{hash}.jpg?s=#{size}&d=#{u(default_image_url)}"
+ end
+
+ def user_gravatar_tag(user, options = {})
+ url = user_gravatar_url(user, options)
+ options[:height] = options[:width] = options.delete(:size) || 100
+ image_tag url, options
+ end