Evdev

The main module for working with devices and events.

Devices

data Device

An input device.

Instances

Show Device

Defined in Evdev

Methods

showsPrec :: Int -> Device -> ShowS

show :: Device -> String

showList :: [Device] -> ShowS

newDevice :: RawFilePath -> IO Device

Create a device from a valid path - usually /dev/input/eventX for some X.

nextEvent :: Device -> IO Event

Get the next event from the device.

evdevDir :: RawFilePath

The usual directory containing devices ("/dev/input").

Properties

deviceName :: Device -> IO ByteString

devicePath :: Device -> RawFilePath

deviceProperties :: Device -> IO [DeviceProperty]

deviceFd :: Device -> IO Fd

Grabbing

grabDevice :: Device -> IO ()

Prevent other clients (including kernel-internal ones) from receiving events. Often a bad idea.

ungrabDevice :: Device -> IO ()

Release a grabbed device.

Events

data Event

An input event, including the timestamp.

Constructors

Event

Fields

• eventData :: EventData
• eventTime :: DiffTime

Instances

Eq Event

Defined in Evdev

Methods

(==) :: Event -> Event -> Bool

(/=) :: Event -> Event -> Bool

Ord Event

Defined in Evdev

Methods

compare :: Event -> Event -> Ordering

(<) :: Event -> Event -> Bool

(<=) :: Event -> Event -> Bool

(>) :: Event -> Event -> Bool

(>=) :: Event -> Event -> Bool

max :: Event -> Event -> Event

min :: Event -> Event -> Event

Show Event

Defined in Evdev

Methods

showsPrec :: Int -> Event -> ShowS

show :: Event -> String

showList :: [Event] -> ShowS

data EventData

An input event, without the timestamp. Each constructor corresponds to one event type, except for UnknownEvent.

Constructors

SyncEvent SyncEvent

KeyEvent Key KeyEvent

RelativeEvent RelativeAxis EventValue

AbsoluteEvent AbsoluteAxis EventValue

MiscEvent MiscEvent EventValue

SwitchEvent SwitchEvent EventValue

LEDEvent LEDEvent EventValue

SoundEvent SoundEvent EventValue

RepeatEvent RepeatEvent EventValue

ForceFeedbackEvent EventCode EventValue

PowerEvent EventCode EventValue

ForceFeedbackStatusEvent EventCode EventValue

UnknownEvent Word16 EventCode EventValue

We include this primarily so that fromCEvent can be well-defined - let us know if you ever actually see one emitted by a device, as it would likely indicate a shortcoming in the library.

Instances

Eq EventData

Defined in Evdev

Methods

(==) :: EventData -> EventData -> Bool

(/=) :: EventData -> EventData -> Bool

Ord EventData

Defined in Evdev

Methods

compare :: EventData -> EventData -> Ordering

(<) :: EventData -> EventData -> Bool

(<=) :: EventData -> EventData -> Bool

(>) :: EventData -> EventData -> Bool

(>=) :: EventData -> EventData -> Bool

max :: EventData -> EventData -> EventData

min :: EventData -> EventData -> EventData

Read EventData

Defined in Evdev

Methods

readsPrec :: Int -> ReadS EventData

readList :: ReadS [EventData]

readPrec :: ReadPrec EventData

readListPrec :: ReadPrec [EventData]

Show EventData

Defined in Evdev

Methods

showsPrec :: Int -> EventData -> ShowS

show :: EventData -> String

showList :: [EventData] -> ShowS

data KeyEvent

The status of a key.

Constructors

Released

Pressed

Repeated

Instances

Bounded KeyEvent

Defined in Evdev

Methods

minBound :: KeyEvent

maxBound :: KeyEvent

Enum KeyEvent

Defined in Evdev

Methods

succ :: KeyEvent -> KeyEvent

pred :: KeyEvent -> KeyEvent

toEnum :: Int -> KeyEvent

fromEnum :: KeyEvent -> Int

enumFrom :: KeyEvent -> [KeyEvent]

enumFromThen :: KeyEvent -> KeyEvent -> [KeyEvent]

enumFromTo :: KeyEvent -> KeyEvent -> [KeyEvent]

enumFromThenTo :: KeyEvent -> KeyEvent -> KeyEvent -> [KeyEvent]

Eq KeyEvent

Defined in Evdev

Methods

(==) :: KeyEvent -> KeyEvent -> Bool

(/=) :: KeyEvent -> KeyEvent -> Bool

Ord KeyEvent

Defined in Evdev

Methods

compare :: KeyEvent -> KeyEvent -> Ordering

(<) :: KeyEvent -> KeyEvent -> Bool

(<=) :: KeyEvent -> KeyEvent -> Bool

(>) :: KeyEvent -> KeyEvent -> Bool

(>=) :: KeyEvent -> KeyEvent -> Bool

max :: KeyEvent -> KeyEvent -> KeyEvent

min :: KeyEvent -> KeyEvent -> KeyEvent

Read KeyEvent

Defined in Evdev

Methods

readsPrec :: Int -> ReadS KeyEvent

readList :: ReadS [KeyEvent]

readPrec :: ReadPrec KeyEvent

readListPrec :: ReadPrec [KeyEvent]

Show KeyEvent

Defined in Evdev

Methods

showsPrec :: Int -> KeyEvent -> ShowS

show :: KeyEvent -> String

showList :: [KeyEvent] -> ShowS

newtype EventCode

A direct representation of the code field of the C input_event, for when there is no obvious meaningful sum type.

Constructors

EventCode Word16

Instances

Enum EventCode

Defined in Evdev

Methods

succ :: EventCode -> EventCode

pred :: EventCode -> EventCode

toEnum :: Int -> EventCode

fromEnum :: EventCode -> Int

enumFrom :: EventCode -> [EventCode]

enumFromThen :: EventCode -> EventCode -> [EventCode]

enumFromTo :: EventCode -> EventCode -> [EventCode]

enumFromThenTo :: EventCode -> EventCode -> EventCode -> [EventCode]

Eq EventCode

Defined in Evdev

Methods

(==) :: EventCode -> EventCode -> Bool

(/=) :: EventCode -> EventCode -> Bool

Integral EventCode

Defined in Evdev

Methods

quot :: EventCode -> EventCode -> EventCode

rem :: EventCode -> EventCode -> EventCode

div :: EventCode -> EventCode -> EventCode

mod :: EventCode -> EventCode -> EventCode

quotRem :: EventCode -> EventCode -> (EventCode, EventCode)

divMod :: EventCode -> EventCode -> (EventCode, EventCode)

toInteger :: EventCode -> Integer

Num EventCode

Defined in Evdev

Methods

(+) :: EventCode -> EventCode -> EventCode

(-) :: EventCode -> EventCode -> EventCode

(*) :: EventCode -> EventCode -> EventCode

negate :: EventCode -> EventCode

abs :: EventCode -> EventCode

signum :: EventCode -> EventCode

fromInteger :: Integer -> EventCode

Ord EventCode

Defined in Evdev

Methods

compare :: EventCode -> EventCode -> Ordering

(<) :: EventCode -> EventCode -> Bool

(<=) :: EventCode -> EventCode -> Bool

(>) :: EventCode -> EventCode -> Bool

(>=) :: EventCode -> EventCode -> Bool

max :: EventCode -> EventCode -> EventCode

min :: EventCode -> EventCode -> EventCode

Read EventCode

Defined in Evdev

Methods

readsPrec :: Int -> ReadS EventCode

readList :: ReadS [EventCode]

readPrec :: ReadPrec EventCode

readListPrec :: ReadPrec [EventCode]

Real EventCode

Defined in Evdev

Methods

toRational :: EventCode -> Rational

Show EventCode

Defined in Evdev

Methods

showsPrec :: Int -> EventCode -> ShowS

show :: EventCode -> String

showList :: [EventCode] -> ShowS

newtype EventValue

A direct representation of the value field of the C input_event, for when there is no obvious meaningful sum type.

Constructors

EventValue Int32

Instances

Enum EventValue

Defined in Evdev

Methods

succ :: EventValue -> EventValue

pred :: EventValue -> EventValue

toEnum :: Int -> EventValue

fromEnum :: EventValue -> Int

enumFrom :: EventValue -> [EventValue]

enumFromThen :: EventValue -> EventValue -> [EventValue]

enumFromTo :: EventValue -> EventValue -> [EventValue]

enumFromThenTo :: EventValue -> EventValue -> EventValue -> [EventValue]

Eq EventValue

Defined in Evdev

Methods

(==) :: EventValue -> EventValue -> Bool

(/=) :: EventValue -> EventValue -> Bool

Integral EventValue

Defined in Evdev

Methods

quot :: EventValue -> EventValue -> EventValue

rem :: EventValue -> EventValue -> EventValue

div :: EventValue -> EventValue -> EventValue

mod :: EventValue -> EventValue -> EventValue

quotRem :: EventValue -> EventValue -> (EventValue, EventValue)

divMod :: EventValue -> EventValue -> (EventValue, EventValue)

toInteger :: EventValue -> Integer

Num EventValue

Defined in Evdev

Methods

(+) :: EventValue -> EventValue -> EventValue

(-) :: EventValue -> EventValue -> EventValue

(*) :: EventValue -> EventValue -> EventValue

negate :: EventValue -> EventValue

abs :: EventValue -> EventValue

signum :: EventValue -> EventValue

fromInteger :: Integer -> EventValue

Ord EventValue

Defined in Evdev

Methods

compare :: EventValue -> EventValue -> Ordering

(<) :: EventValue -> EventValue -> Bool

(<=) :: EventValue -> EventValue -> Bool

(>) :: EventValue -> EventValue -> Bool

(>=) :: EventValue -> EventValue -> Bool

max :: EventValue -> EventValue -> EventValue

min :: EventValue -> EventValue -> EventValue

Read EventValue

Defined in Evdev

Methods

readsPrec :: Int -> ReadS EventValue

readList :: ReadS [EventValue]

readPrec :: ReadPrec EventValue

readListPrec :: ReadPrec [EventValue]

Real EventValue

Defined in Evdev

Methods

toRational :: EventValue -> Rational

Show EventValue

Defined in Evdev

Methods

showsPrec :: Int -> EventValue -> ShowS

show :: EventValue -> String

showList :: [EventValue] -> ShowS

Lower-level types

These correspond more directly to C's input_event and timeval. They are used internally, but may be useful for advanced users.

data CEvent

Constructors

CEvent

Fields

• cEventType :: Word16
• cEventCode :: Word16
• cEventValue :: Int32
• cEventTime :: CTimeVal

Instances

Eq CEvent

Defined in Evdev.LowLevel

Methods

(==) :: CEvent -> CEvent -> Bool

(/=) :: CEvent -> CEvent -> Bool

Ord CEvent

Defined in Evdev.LowLevel

Methods

compare :: CEvent -> CEvent -> Ordering

(<) :: CEvent -> CEvent -> Bool

(<=) :: CEvent -> CEvent -> Bool

(>) :: CEvent -> CEvent -> Bool

(>=) :: CEvent -> CEvent -> Bool

max :: CEvent -> CEvent -> CEvent

min :: CEvent -> CEvent -> CEvent

Read CEvent

Defined in Evdev.LowLevel

Methods

readsPrec :: Int -> ReadS CEvent

readList :: ReadS [CEvent]

readPrec :: ReadPrec CEvent

readListPrec :: ReadPrec [CEvent]

Show CEvent

Defined in Evdev.LowLevel

Methods

showsPrec :: Int -> CEvent -> ShowS

show :: CEvent -> String

showList :: [CEvent] -> ShowS

toCEvent :: Event -> CEvent

fromCEvent :: CEvent -> Event

data CTimeVal

Constructors

CTimeVal

Fields

• tvSec :: Int64
• tvUsec :: Int64

Instances

Eq CTimeVal

Defined in Evdev.LowLevel

Methods

(==) :: CTimeVal -> CTimeVal -> Bool

(/=) :: CTimeVal -> CTimeVal -> Bool

Ord CTimeVal

Defined in Evdev.LowLevel

Methods

compare :: CTimeVal -> CTimeVal -> Ordering

(<) :: CTimeVal -> CTimeVal -> Bool

(<=) :: CTimeVal -> CTimeVal -> Bool

(>) :: CTimeVal -> CTimeVal -> Bool

(>=) :: CTimeVal -> CTimeVal -> Bool

max :: CTimeVal -> CTimeVal -> CTimeVal

min :: CTimeVal -> CTimeVal -> CTimeVal

Read CTimeVal

Defined in Evdev.LowLevel

Methods

readsPrec :: Int -> ReadS CTimeVal

readList :: ReadS [CTimeVal]

readPrec :: ReadPrec CTimeVal

readListPrec :: ReadPrec [CTimeVal]

Show CTimeVal

Defined in Evdev.LowLevel

Methods

showsPrec :: Int -> CTimeVal -> ShowS

show :: CTimeVal -> String

showList :: [CTimeVal] -> ShowS

toCTimeVal :: DiffTime -> CTimeVal

fromCTimeVal :: CTimeVal -> DiffTime