You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
35 lines
1.3 KiB
35 lines
1.3 KiB
# frozen_string_literal: true
|
|
|
|
module Paperclip
|
|
class LazyThumbnail < Paperclip::Thumbnail
|
|
def make
|
|
return File.open(@file.path) unless needs_convert?
|
|
|
|
if options[:geometry]
|
|
min_side = [@current_geometry.width, @current_geometry.height].min.to_i
|
|
options[:geometry] = "#{min_side}x#{min_side}#" if @target_geometry.square? && min_side < @target_geometry.width
|
|
elsif options[:pixels]
|
|
width = Math.sqrt(options[:pixels] * (@current_geometry.width.to_f / @current_geometry.height.to_f)).round.to_i
|
|
height = Math.sqrt(options[:pixels] * (@current_geometry.height.to_f / @current_geometry.width.to_f)).round.to_i
|
|
options[:geometry] = "#{width}x#{height}>"
|
|
end
|
|
|
|
Paperclip::Thumbnail.make(file, options, attachment)
|
|
end
|
|
|
|
private
|
|
|
|
def needs_convert?
|
|
needs_different_geometry? || needs_different_format?
|
|
end
|
|
|
|
def needs_different_geometry?
|
|
(options[:geometry] && @current_geometry.width != @target_geometry.width && @current_geometry.height != @target_geometry.height) ||
|
|
(options[:pixels] && @current_geometry.width * @current_geometry.height > options[:pixels])
|
|
end
|
|
|
|
def needs_different_format?
|
|
@format.present? && @current_format != @format
|
|
end
|
|
end
|
|
end
|