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Contents
require 'image_optim/worker'
require 'image_optim/option_helpers'
require 'image_optim/true_false_nil'
class ImageOptim
class Worker
# http://optipng.sourceforge.net/
class Optipng < Worker
LEVEL_OPTION =
option(:level, 6, 'Optimization level preset: '\
'`0` is least, '\
'`7` is best') do |v|
OptionHelpers.limit_with_range(v.to_i, 0..7)
end
INTERLACE_OPTION =
option(:interlace, false, TrueFalseNil, 'Interlace: '\
'`true` - interlace on, '\
'`false` - interlace off, '\
'`nil` - as is in original image') do |v|
TrueFalseNil.convert(v)
end
STRIP_OPTION =
option(:strip, true, 'Remove all auxiliary chunks'){ |v| !!v }
def run_order
-4
end
def optimize(src, dst)
src.copy(dst)
args = %W[
-o #{level}
-quiet
--
#{dst}
]
args.unshift "-i#{interlace ? 1 : 0}" unless interlace.nil?
if resolve_bin!(:optipng).version >= '0.7'
args.unshift '-strip', 'all' if strip
end
execute(:optipng, *args) && optimized?(src, dst)
end
def optimized?(src, dst)
interlace ? dst.size? : super
end
end
end
end
Version data entries
10 entries across 10 versions & 2 rubygems