Class: Morandi::ProfiledPixbuf

Inherits:
Gdk::Pixbuf
  • Object
show all
Defined in:
lib/morandi/profiled_pixbuf.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ ProfiledPixbuf

Returns a new instance of ProfiledPixbuf.



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# File 'lib/morandi/profiled_pixbuf.rb', line 28

def initialize(*args)
  @local_options = args.last.is_a?(Hash) && args.pop || {}

  if args[0].is_a?(String)
    @file = args[0]

    if suitable_for_jpegicc?
      icc_file = icc_cache_path

      args[0] = icc_file if valid_jpeg?(icc_file) || system("jpgicc", "-q97", @file, icc_file)
    end
  end

  super(*args)
rescue Gdk::PixbufError::CorruptImage => e
  if args[0].is_a?(String) && defined? Tempfile
    temp =  Tempfile.new
    pixbuf = self.class.from_string(File.read(args[0]))
    pixbuf.save(temp.path, 'jpeg')
    args[0] = temp.path
    super(*args)
    temp.close
    temp.unlink
  else
    throw e
  end
end

Class Method Details

.default_icc_path(path) ⇒ Object 



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# File 'lib/morandi/profiled_pixbuf.rb', line 24

def self.default_icc_path(path)
  "#{path}.icc.jpg"
end

.from_string(string, loader: nil, chunk_size: 4096) ⇒ Object 



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# File 'lib/morandi/profiled_pixbuf.rb', line 15

def self.from_string(string, loader: nil, chunk_size: 4096)
  loader ||= Gdk::PixbufLoader.new
  ((string.bytesize + chunk_size - 1) / chunk_size).times do |i|
    loader.write(string.byteslice(i * chunk_size, chunk_size))
  end
  loader.close
  loader.pixbuf
end

Instance Method Details

#valid_jpeg?(filename) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/morandi/profiled_pixbuf.rb', line 4

def valid_jpeg?(filename)
  return false unless File.exist?(filename)
  return false unless File.size(filename) > 0

  type, _, _ = Gdk::Pixbuf.get_file_info(filename)

  type && type.name.eql?('jpeg')
rescue
  false
end