Class: Captcha::Config

Inherits:
Object
  • Object
show all
Defined in:
lib/captcha/config.rb

Constant Summary collapse

PRODUCTION = 
false
ROOT = 
""
ONE_DAY = 
24 * 60 * 60
@@options = 
{
  :password => 'captcha',
  :colors => {
    :background => '#FFFFFF',
    :font => '#080288'
  },
  # number of captcha images to generate
  :count => PRODUCTION ? 500 : 10,
  :destination => "#{ROOT}public/images/captchas",
  :dimensions => {
    # canvas height (px)
    :height => 32,
    # canvas width (px)
    :width => 110
  },
  :generate_every => PRODUCTION ? ONE_DAY * 1 : ONE_DAY * 10000,
  # http://www.imagemagick.org/RMagick/doc/image2.html#implode
  :implode => 0.2,
  :letters => {
    # text baseline (px)
    :baseline => 25,
    # number of letters in captcha
    :count => 6,
    :ignore => ['a','e','i','o','u','l','j','q','v'],
    # font size (pts)
    :points => 38,
    # width of a character (used to decrease or increase space between characters) (px)
    :width => 17
  },
  :ttf => File.expand_path("#{File.dirname(__FILE__)}/../../resources/captcha.ttf"),
  # http://www.imagemagick.org/RMagick/doc/image3.html#wave
  :wave => {
    # range is used for randomness (px)
    :wavelength => (40..70),
    # distance between peak and valley of sin wave (px)
    :amplitude => 3
  }
}

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(options = {}) ⇒ Config

Returns a new instance of Config.



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# File 'lib/captcha/config.rb', line 52

def initialize(options={})
  @@options.merge!(options)
end

Class Method Details

.captchas ⇒ Object 



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# File 'lib/captcha/config.rb', line 56

def self.captchas
  Dir["#{@@options[:destination]}/*.jpg"]
end

.codes ⇒ Object 



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# File 'lib/captcha/config.rb', line 60

def self.codes
  self.captchas.collect do |f|
    File.basename f, '.jpg'
  end
end

.exists?(code) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/captcha/config.rb', line 66

def self.exists?(code)
  File.exists?("#{@@options[:destination]}/#{code}.jpg")
end

.last_modified ⇒ Object 



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# File 'lib/captcha/config.rb', line 74

def self.last_modified
  file = self.captchas.first
  if file && File.exists?(file)
    File.mtime(file)
  else
    nil
  end
end

.options ⇒ Object 



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# File 'lib/captcha/config.rb', line 70

def self.options
  @@options
end