Class: Uinput::Device

Inherits:
Object
  • Object
show all
Defined in:
lib/uinput/device.rb,
lib/uinput/device/error.rb,
lib/uinput/device/version.rb,
lib/uinput/device/system_initializer.rb

Defined Under Namespace

Classes: Error, SystemInitializer

Constant Summary collapse

SYS_INPUT_DIR = 
'/sys/devices/virtual/input/'
VERSION = 
"0.3.1"

Instance Method Summary collapse

Constructor Details

#initialize(&block) ⇒ Device

Returns a new instance of Device.



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# File 'lib/uinput/device.rb', line 11

def initialize(&block)
  @file = self.class::SystemInitializer.new(self, &block).create
end

Instance Method Details

#active? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/uinput/device.rb', line 43

def active?
  not @file.nil?
end

#destroy ⇒ Object 



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# File 'lib/uinput/device.rb', line 15

def destroy
  @file.ioctl(UI_DEV_DESTROY, nil)
  @file = nil
end

#dev_path ⇒ Object 



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# File 'lib/uinput/device.rb', line 33

def dev_path
  event_dir = Dir["#{sys_path}/event*"].first
  event = File.basename(event_dir)
  "/dev/input/#{event}"
end

#name ⇒ Object 



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# File 'lib/uinput/device.rb', line 39

def name
  File.read("#{sys_path}/name")
end

#send_event(type, code, value = 0) ⇒ Object 



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# File 'lib/uinput/device.rb', line 47

def send_event(type, code, value = 0)
  event = LinuxInput::InputEvent.new
  event[:time] = LinuxInput::Timeval.new
  event[:time][:tv_sec] = Time.now.to_i
  event[:type] = type.is_a?(Symbol) ? LinuxInput.const_get(type) : type
  event[:code] = code.is_a?(Symbol) ? LinuxInput.const_get(code) : code
  event[:value] = value
  @file.syswrite(event.pointer.read_bytes(event.size))
end

#sys_path ⇒ Object 



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# File 'lib/uinput/device.rb', line 29

def sys_path
  "#{SYS_INPUT_DIR}#{sysname}"
end

#sysname ⇒ Object 



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# File 'lib/uinput/device.rb', line 20

def sysname
  @sysname ||= begin
    name_len = 128
    name_buffer = [' ' * name_len].pack("A#{name_len}")
    @file.ioctl(Uinput.UI_GET_SYSNAME(name_len), name_buffer)
    name_buffer.unpack("A#{name_len}").first
  end
end