Class: Ruinput::UinputDevice

Inherits:
Revdev::EventDevice
  • Object
show all
Defined in:
lib/ruinput/uinput_device.rb,
lib/ruinput.rb

Overview

a class for /dev/uinput

Constant Summary collapse

DEFUALT_LOCATION = 
"/dev/uinput"
DEFAULT_DEVICE_NAME = 
"ruinput"
DEFAULT_INPUT_ID = 
Revdev::InputId.new({ :bustype => Revdev::BUS_VIRTUAL,
:vendor => 1,
:product => 1,
:version => 1 })

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(location = nil) ⇒ UinputDevice

Returns a new instance of UinputDevice.



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# File 'lib/ruinput/uinput_device.rb', line 18

def initialize  location=nil
  @is_created = false
  location ||= DEFUALT_LOCATION
  super location
end

Instance Attribute Details

#is_created ⇒ Object (readonly)

Returns the value of attribute is_created.



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# File 'lib/ruinput/uinput_device.rb', line 9

def is_created
  @is_created
end

Instance Method Details

#create(name = DEFAULT_DEVICE_NAME, id = DEFAULT_INPUT_ID) ⇒ Object

create virtual event divece

name

device name

id

InputId (“struct input_id” on input.h)



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# File 'lib/ruinput/uinput_device.rb', line 27

def create name = DEFAULT_DEVICE_NAME, id = DEFAULT_INPUT_ID
  if not name.kind_of? String
    raise ArgumentError, "1st arg expect String"
  elsif not id.kind_of? Revdev::InputId
    raise ArgumentError, "2nd arg expect Revdev::InputId"
  end

  uud = UinputUserDev.new({ :name => name, :id => id,
                            :ff_effects_max => 0, :absmax => [20],
                            :absmin => [30], :absfuzz => [4],
                            :absflat => [5] })
  @file.syswrite uud.to_byte_string

  set_all_events

  @file.ioctl UI_DEV_CREATE, nil
  @is_created = true
end

#destroy ⇒ Object 



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# File 'lib/ruinput/uinput_device.rb', line 46

def destroy
  if not @is_created
    raise Exception, "invalid method call: this uinput is not created"
  end
  @file.ioctl UI_DEV_DESTROY, nil
  @file.close
end

#set_all_events ⇒ Object 



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# File 'lib/ruinput/uinput_device.rb', line 54

def set_all_events
  if @is_created
    raise Exception, "invalid method call: this uinput is already created"
  end
  @file.ioctl UI_SET_EVBIT, Revdev::EV_KEY
  Revdev::KEY_CNT.times do |i|
    @file.ioctl UI_SET_KEYBIT, i
  end

  @file.ioctl UI_SET_EVBIT, Revdev::EV_MSC
  Revdev::MSC_CNT.times do |i|
    @file.ioctl UI_SET_MSCBIT, i
  end

  @file.ioctl UI_SET_EVBIT, Revdev::EV_MSC
  Revdev::MSC_CNT.times do |i|
    @file.ioctl UI_SET_MSCBIT, i
  end

  @file.ioctl UI_SET_EVBIT, Revdev::EV_ABS
  Revdev::ABS_CNT.times do |i|
    @file.ioctl UI_SET_ABSBIT, i
  end

  @file.ioctl UI_SET_EVBIT, Revdev::EV_REP
end