Class: XInputWrapper

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

Instance Method Summary collapse

Constructor Details

#initialize(device: '3', host: 'sps', port: '59000', topic: 'input/keyboard', verbose: true, lookup: {}, interval: nil) ⇒ XInputWrapper

Returns a new instance of XInputWrapper.



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# File 'lib/xinput_wrapper.rb', line 12

def initialize(device: '3', host: 'sps', port: '59000', 
           topic: 'input/keyboard', verbose: true, lookup: {}, interval: nil)

  @lookup = {
    37 => :control,
    50 => :lshift,
    133 => :super
  }.merge(lookup)

  @device, @topic, @verbose = device, topic, verbose
  @sps = SPSPub.new host: host, port: port
  @sk = SecretKnock.new short_delay: 0.25, long_delay: 0.5, 
                            external: self, verbose: verbose
  @interval = interval
  @time = Time.now if interval
  
end

Instance Method Details

#knock ⇒ Object 



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# File 'lib/xinput_wrapper.rb', line 30

def knock()
  puts 'knock' if @verbose
end

#listen ⇒ Object 



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# File 'lib/xinput_wrapper.rb', line 43

def listen()

  command = "xinput test-xi2 --root #{@device}"
  @sk.detect timeout: 0.7
  sk = @sk
  type = 0

  IO.popen(command).each_line do |x|
 
    #print "GOT ", x
    raw_type = x[/EVENT type (\d+)/,1]

    type = raw_type.to_i unless raw_type.nil?
    
    # type = 13 means a key has been pressed
    if type == 13 then

      keycode = x[/detail: (\d+)/,1].to_i

      puts 'keycode: ' + keycode.to_s if keycode > 0 and @verbose
      
      if @interval then
        
        if Time.now > @time + @interval then
          @sps.notice "%s: key pressed" % [@topic] 
          @time = Time.now
        end
      end

      case @lookup[keycode]
      when :lshift
        puts 'left shift' if @verbose
      when :control
        puts 'control' if @verbose
        sk.knock
      when :super
        puts 'super key pressed'  if @verbose
        message 'super key pressed' 
      end

    end
  end
end

#message(msg) ⇒ Object 



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# File 'lib/xinput_wrapper.rb', line 34

def message(msg)
  
  puts ':: ' + msg.inspect if @verbose        
  
  return if msg.strip.empty?
  
  @sps.notice "%s: %s" % [@topic, msg]
end