XMonad.Hooks.Rescreen

Custom hooks for screen (xrandr) configuration changes.

Usage

This module provides a replacement for the screen configuration change handling in core that enables attaching custom hooks to screen (xrandr) configuration change events. These can be used to restart/reposition status bars or systrays automatically after xrandr (dynamicSBs uses this module internally), as well as to actually invoke xrandr or autorandr when an output is (dis)connected.

To use this, include the following in your ~/.xmonad/xmonad.hs:

import XMonad.Hooks.Rescreen

define your custom hooks:

myAfterRescreenHook :: X ()
myAfterRescreenHook = spawn "fbsetroot -solid red"

myRandrChangeHook :: X ()
myRandrChangeHook = spawn "autorandr --change"

and hook them into your xmonad config:

main = xmonad $ …
              . addAfterRescreenHook myAfterRescreenHook
              . addRandrChangeHook myRandrChangeHook
              . …
              $ def{…}

See documentation of rescreenHook for details about when these hooks are called.

addAfterRescreenHook :: X () -> XConfig l -> XConfig l

Shortcut for rescreenHook.

addRandrChangeHook :: X () -> XConfig l -> XConfig l

Shortcut for rescreenHook.

data RescreenConfig

Hook configuration for rescreenHook.

Constructors

RescreenConfig

Fields

• afterRescreenHook :: X ()

  hook to invoke after rescreen

• randrChangeHook :: X ()

  hook for other randr changes, e.g. (dis)connects

Instances

Monoid RescreenConfig

Defined in XMonad.Hooks.Rescreen

Methods

mempty :: RescreenConfig

mappend :: RescreenConfig -> RescreenConfig -> RescreenConfig

mconcat :: [RescreenConfig] -> RescreenConfig

Semigroup RescreenConfig

Defined in XMonad.Hooks.Rescreen

Methods

(<>) :: RescreenConfig -> RescreenConfig -> RescreenConfig

sconcat :: NonEmpty RescreenConfig -> RescreenConfig

stimes :: Integral b => b -> RescreenConfig -> RescreenConfig

Default RescreenConfig

Defined in XMonad.Hooks.Rescreen

Methods

def :: RescreenConfig

rescreenHook :: RescreenConfig -> XConfig l -> XConfig l

Attach custom hooks to screen (xrandr) configuration change events. Replaces the built-in rescreen handling of xmonad core with:

1. listen to RRScreenChangeNotifyEvent in addition to ConfigureEvent on the root window
2. whenever such event is received:
3. clear any other similar events (Xorg server emits them in bunches)
4. if any event was ConfigureEvent, rescreen and invoke afterRescreenHook
5. if there was no ConfigureEvent, invoke randrChangeHook only

afterRescreenHook is useful for restarting/repositioning status bars and systray.

randrChangeHook may be used to automatically trigger xrandr (or perhaps autorandr) when outputs are (dis)connected.

Note that rescreenHook is safe to use several times, rescreen is still done just once and hooks are invoked in sequence, also just once.