Class: Revdev::EventDevice

Inherits:
Object
  • Object
show all
Defined in:
lib/revdev.rb,
lib/revdev/event_device.rb

Constant Summary collapse

ONE_CHAR_CODE = 
'1'[0]

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(arg) ⇒ EventDevice

Returns a new instance of EventDevice.



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# File 'lib/revdev/event_device.rb', line 9

def initialize arg
  if arg.kind_of? File
    @file = arg
  else
    @file = File.new arg, 'r+'
  end
end

Instance Attribute Details

#file ⇒ Object (readonly)

Returns the value of attribute file.



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# File 'lib/revdev/event_device.rb', line 5

def file
  @file
end

Instance Method Details

#all_leds_status ⇒ Object 



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# File 'lib/revdev/event_device.rb', line 59

def all_leds_status
  r = read_ioctl_with EVIOCGLED
  r = r.unpack("b#{LED_MAX}")[0]
  m = {}
  LED_MAX.times do |i|
    break if REVERSE_MAPS[:LED][i].nil?
    m[REVERSE_MAPS[:LED][i]] = (r[i] == ONE_CHAR_CODE)
  end
  m
end

#all_sounds_status ⇒ Object 



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# File 'lib/revdev/event_device.rb', line 70

def all_sounds_status
  r = read_ioctl_with EVIOCGSND
  r = r.unpack("b#{LED_MAX}")[0]
  m = {}
  SND_MAX.times do |i|
    break if REVERSE_MAPS[:SND][i].nil?
    m[REVERSE_MAPS[:SND][i]] = (r[i] == ONE_CHAR_CODE)
  end
  m
end

#all_switch_status ⇒ Object 



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# File 'lib/revdev/event_device.rb', line 81

def all_switch_status
  r = read_ioctl_with EVIOCGSW
  r = r.unpack("b#{LED_MAX}")[0]
  m = {}
  SW_MAX.times do |i|
    break if REVERSE_MAPS[:SW][i].nil?
    m[REVERSE_MAPS[:SW][i]] = (r[i] == ONE_CHAR_CODE)
  end
  m
end

#device_id ⇒ Object 



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# File 'lib/revdev/event_device.rb', line 28

def device_id
  InputId.new read_ioctl_with EVIOCGID
end

#device_name ⇒ Object 



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# File 'lib/revdev/event_device.rb', line 37

def device_name
  read_ioctl_as_string_with EVIOCGNAME
end

#device_prop ⇒ Object 



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# File 'lib/revdev/event_device.rb', line 50

def device_prop
  read_ioctl_as_string_with EVIOCGPROP
end

#driver_version ⇒ Object 



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# File 'lib/revdev/event_device.rb', line 23

def driver_version
  r = read_ioctl_with EVIOCGVERSION
  r.unpack('C3')
end

#global_key_state ⇒ Object 



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# File 'lib/revdev/event_device.rb', line 55

def global_key_state
  read_ioctl_as_string_with EVIOCGKEY
end

#grab ⇒ Object

grab all input events of the event device



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# File 'lib/revdev/event_device.rb', line 93

def grab
  @file.ioctl EVIOCGRAB, 1
end

#physical_location ⇒ Object 



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# File 'lib/revdev/event_device.rb', line 41

def physical_location
  read_ioctl_as_string_with EVIOCGPHYS
end

#read_input_event ⇒ Object 



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# File 'lib/revdev/event_device.rb', line 102

def read_input_event
  ie = InputEvent.new @file.sysread InputEvent::SIZEOF
  puts "read  #{ie.hr_type}\t#{ie.hr_code}\t#{ie.value}" if $DEBUG
  ie
end

#read_ioctl_as_string_with(command) ⇒ Object 



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# File 'lib/revdev/event_device.rb', line 32

def read_ioctl_as_string_with command
  r = read_ioctl_with command
  r.unpack('Z*').first
end

#read_ioctl_with(command) ⇒ Object 



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# File 'lib/revdev/event_device.rb', line 17

def read_ioctl_with command
  r = ""
  @file.ioctl command, r
  return r
end

#ungrab ⇒ Object

release the grabbed event device



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# File 'lib/revdev/event_device.rb', line 98

def ungrab
  @file.ioctl EVIOCGRAB, 0
end

#uniq_id ⇒ Object 



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# File 'lib/revdev/event_device.rb', line 45

def uniq_id
  read_ioctl_as_string_with EVIOCGUNIQ
end

#write_input_event(ie) ⇒ Object 



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# File 'lib/revdev/event_device.rb', line 108

def write_input_event ie
  puts "write #{ie.hr_type}\t#{ie.hr_code}\t#{ie.value}" if $DEBUG
  @file.syswrite ie.to_byte_string
end