Module: Drakkon::Images::Sepia

Defined in:
lib/drakkon/lib/images/sepia.rb

Overview

General Image Index Helper imagemagick.org/script/command-line-options.php#sepia-tone

Class Method Summary collapse

Class Method Details

.images ⇒ Object 



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# File 'lib/drakkon/lib/images/sepia.rb', line 53

def self.images
  Dir["#{Dir.pwd}/**/*.png"]
end

.process(file, amount) ⇒ Object 



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# File 'lib/drakkon/lib/images/sepia.rb', line 44

def self.process(file, amount)
  convert = MiniMagick::Tool::Convert.new
  convert << file
  convert.colorspace('RGB')
  convert.sepia_tone("#{amount}%")
  convert << file
  convert.call
end

.prompt ⇒ Object 



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# File 'lib/drakkon/lib/images/sepia.rb', line 57

def self.prompt
  TTY::Prompt.new(active_color: :cyan, interrupt: :exit)
end

.run!(args = []) ⇒ Object 



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# File 'lib/drakkon/lib/images/sepia.rb', line 6

def self.run!(args = [])
  # Amount
  amount = if args.empty?
             prompt.ask('Sepia Threshold? (e.g. 80): ')
           else
             args.shift
           end

  puts <<~HELP
    Usage
    - Run in the directory you wish to modify the images
    - Applies a special effect to the image, similar to the effect achieved in a photo darkroom by sepia toning.

    Sepia: Amount: #{amount}
    Current Directory;
      #{Dir.pwd.pastel(:yellow)}

    Images:
  HELP

  images.sort.each do |img|
    img_s = img.gsub("#{Dir.pwd}/", '').pastel(:yellow)
    puts "  - #{img_s}"
  end
  puts

  exit unless prompt.yes? "#{'Are you sure?'.pastel(:bright_yellow)} Sepia!? #{'(Destructive)'.pastel(:red)}"

  start(amount)
end

.start(amount) ⇒ Object 



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# File 'lib/drakkon/lib/images/sepia.rb', line 37

def self.start(amount)
  images.each do |img|
    LogBot.info('Image Sepia', img)
    process(img, amount)
  end
end