Class: MorseCodeListener

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

Overview

file: morsecode_listener.rb

Instance Method Summary collapse

Constructor Details

#initialize(short_delay: 0.35, long_delay: 1, dot: 2, dash: 1, separator: 4, space: 5, timeout: 2, notifier: nil) ⇒ MorseCodeListener

Returns a new instance of MorseCodeListener.



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# File 'lib/morsecode_listener.rb', line 7

def initialize(short_delay: 0.35, long_delay: 1, dot: 2, dash: 1, 
      separator: 4, space: 5, timeout: 2, notifier: nil)

  @short_delay, @long_delay, @timeout = short_delay, long_delay, timeout
  @h = { dot: dot, dash: dash, separator: separator, space: space }
  @notifier = notifier
  @t, @a = nil, []
end

Instance Method Details

#on_keydown ⇒ Object 



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# File 'lib/morsecode_listener.rb', line 16

def on_keydown()

  @thread.exit if @thread
  @t = Time.now
end

#on_keyup ⇒ Object 



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# File 'lib/morsecode_listener.rb', line 22

def on_keyup()

  t = Time.now - @t

  if t < @short_delay then
    @a << @h[:dot]
  elsif t < @long_delay
    @a << @h[:dash]      
  end

  
  @thread = Thread.new do

    sleep @short_delay * 2
    @a << @h[:separator]
    sleep @long_delay - @short_delay
    @a.pop
    @a << @h[:space]
    sleep @timeout - @long_delay - @short_delay
    @a.pop

    s = @a.join

    if @notifier then

      begin
        @notifier.message s if @notifier.respond_to? :message
      rescue
        puts 'warning: MorseCodeListener#on_keyup @notifier' + ($!).inspect
      end

    else
      puts '>> ' + s
    end

    @a = []

  end

end