| Safe Haskell | Safe-Inferred |
|---|---|
| Language | Haskell2010 |
Evdev.Stream
Description
Functions for working with streams of input events. Unless stated otherwise, these functions will throw exceptions if the underlying C calls fail.
Synopsis
- allDevices :: (IsStream t, Monad (t IO)) => t IO Device
- allEvents :: IsStream t => t IO (Device, Event)
- makeDevices :: IsStream t => t IO RawFilePath -> t IO Device
- newDevices :: (IsStream t, Monad (t IO)) => t IO Device
- newDevices' :: (IsStream t, Monad (t IO)) => Int -> t IO Device
- readEvents :: Device -> SerialT IO Event
- readEventsMany :: IsStream t => AsyncT IO Device -> t IO (Device, Event)
Documentation
allDevices :: (IsStream t, Monad (t IO)) => t IO Device Source #
All valid existing devices (in /dev/input). If a device can't be initialised for an individual path, then the exception is printed, and the function continues to try to initialise the others.
allEvents :: IsStream t => t IO (Device, Event) Source #
All events on all valid devices (in /dev/input). Prints any exceptions.
allEvents == readEventsMany allDevices
makeDevices :: IsStream t => t IO RawFilePath -> t IO Device Source #
Create devices for all paths in the stream.
newDevices :: (IsStream t, Monad (t IO)) => t IO Device Source #
All new devices created (in /dev/input). Watches for new file paths (using inotify), and those corresponding to valid devices are added to the stream.
newDevices' :: (IsStream t, Monad (t IO)) => Int -> t IO Device Source #
This is a workaround for bugginess in newDevices when it comes to waiting for permissions on a new device
- it just waits the number of microseconds given before trying to read from the device.