diff options
Diffstat (limited to 'lib/paperclip/lazy_thumbnail.rb')
-rw-r--r-- | lib/paperclip/lazy_thumbnail.rb | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/lib/paperclip/lazy_thumbnail.rb b/lib/paperclip/lazy_thumbnail.rb new file mode 100644 index 000000000..aafa21343 --- /dev/null +++ b/lib/paperclip/lazy_thumbnail.rb @@ -0,0 +1,28 @@ +# frozen_string_literal: true + +module Paperclip + class LazyThumbnail < Paperclip::Thumbnail + def make + return File.open(@file.path) unless needs_convert? + + min_side = [@current_geometry.width, @current_geometry.height].min + options[:geometry] = "#{min_side.to_i}x#{min_side.to_i}#" if @target_geometry.square? && min_side < @target_geometry.width + + Paperclip::Thumbnail.make(file, options, attachment) + end + + private + + def needs_convert? + needs_different_geometry? || needs_different_format? + end + + def needs_different_geometry? + !@target_geometry.nil? && @current_geometry.width != @target_geometry.width && @current_geometry.height != @target_geometry.height + end + + def needs_different_format? + @format.present? && @current_format != @format + end + end +end |