Class: DerivativeRodeo::Generators::MonochromeGenerator

Inherits:
BaseGenerator
  • Object
show all
Defined in:
lib/derivative_rodeo/generators/monochrome_generator.rb

Overview

Take images an ensures that we have a monochrome derivative of those images.

Instance Attribute Summary

Attributes inherited from BaseGenerator

#input_uris, #output_extension, #output_location_template, #preprocessed_location_template

Instance Method Summary collapse

Methods inherited from BaseGenerator

#derive_preprocessed_template_from, #destination, #generated_files, #generated_uris, #initialize, #input_files, #run, #valid_instantiation?, #with_each_requisite_location_and_tmp_file_path

Constructor Details

This class inherits a constructor from DerivativeRodeo::Generators::BaseGenerator

Instance Method Details

#build_step(input_location:, output_location:, input_tmp_file_path:) ⇒ StorageLocations::BaseLocation

Parameters:

Returns:



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# File 'lib/derivative_rodeo/generators/monochrome_generator.rb', line 16

def build_step(input_location:, output_location:, input_tmp_file_path:)
  image = DerivativeRodeo::Services::ImageService.new(input_tmp_file_path)
  if image.monochrome?
    # The input_location is already have a monochrome file, no need to run conversions.
    input_location
  else
    # We need to write monochromify and the image.
    monochromify(output_location, image)
  end
end

#monochromify(monochrome_file, image) ⇒ StorageLocations::BaseLocation

Convert the above image to a file at the monochrome_path

Parameters:

Returns:



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# File 'lib/derivative_rodeo/generators/monochrome_generator.rb', line 33

def monochromify(monochrome_file, image)
  monochrome_file.with_new_tmp_path do |monochrome_path|
    image.convert(destination: monochrome_path, monochrome: true)
  end
end