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October 2016

3 participants
2 discussions

Controlling Window Location with XMonad.Layout.ThreeColumns
by Eyal Erez 12 Jan '17

12 Jan '17

Hi, I have an ultrawide monitor and so I use ThreeColumns most of the time. I create it like so: ThreeColMid 1 (3/100) (1/3) This works fine, however, I'm getting some strange behavior when creating an closing windows. I hope I can explain this with a small diagram which shows window location as I create and close apps: CREATE 1 [ a ] 2 [b][ a ] 3 [a][c][b] CLOSE 1 [a][c][b] 2 [b][ a ] 3 [ a ] So, when going from 2 to 3 open windows, window "a" and "b" switch location for some reason. in step #2 "b" is on the left and "a" is on the right, but when a third window is added (or removed) they swap locations. This is very confusing. Is there anyway I can cause this to stop happening? It would also be nice if window "b" was created into the active location, but that's more of a nitpick. Thank you -- There are 10 types of people, those who know binary and those who don't.

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[ANN] X.H.Focus: combinators extending MH for managing focus
by Dmitriy Matrosov 07 Oct '16

07 Oct '16

Hi. I want to announce a new module for xmonad: XMonad.Hooks.Focus . This module provides monad on top of Query monad providing additional information about new window: - workspace, where new window will appear; - focused window on workspace, where new window will appear; - current workspace (this can be retrieved without any additional modules, that's just for completeness); And two properties in extensible state: - is focus lock enabled? Focus lock instructs all library's FocusHook functions to not move focus. - is new window _NET_ACTIVE_WINDOW activated? It is not really new in that case, but i may work with it in the same way. Lifting operations for standard `ManageHook` EDSL combinators into `FocusQuery` monad allowing to run these combinators on focused window and common actions for keeping focus and/or workspace, switching focus and/or workspace are also provided. As far as i know, no one from xmonad-contrib modules provide this functionality at the moment. Here is a few examples: activateFocusHook :: FocusHook activateFocusHook = composeAll -- If `gmrun` is focused on workspace, on which -- activated window is, keep focus unchanged. But i -- may still switch workspace. [ focused (className =? "Gmrun") --> keepFocus -- Default behavior for activated windows: switch -- workspace and focus. , return True --> switchWorkspace <+> switchFocus ] newFocusHook :: FocusHook newFocusHook = composeOne -- Always switch focus to `gmrun`. [ new (className =? "Gmrun") -?> switchFocus -- And always keep focus on `gmrun`. Note, that -- another `gmrun` will steal focus from already -- running one. , focused (className =? "Gmrun") -?> keepFocus -- If firefox dialog prompt (e.g. master password -- prompt) is focused on current workspace and new -- window appears here too, keep focus unchanged -- (note, used predicates: `newOnCur <&&> focused` is -- the same as `newOnCur <&&> focusedCur`, but is -- *not* the same as just `focusedCur` ) , newOnCur <&&> focused ((className =? "Iceweasel" <||> className =? "Firefox") <&&> isDialog) -?> keepFocus -- Default behavior for new windows: switch focus. , return True -?> switchFocus ] And here is an example of moving all activated windows to current workspace by default, but keeping focus on current window (note, i need more generic `composeOne` and `(-?>)`, than defind in X.H.ManageHelpers): import Data.Monoid import Control.Applicative import Control.Monad import XMonad import qualified XMonad.StackSet as W import XMonad.Hooks.Focus import XMonad.Hooks.ManageHelpers hiding (composeOne, (-?>)) main :: IO () main = do let xcf = handleFocusQuery (Just (0, xK_v)) (composeOne [ activated -?> (newOnCur --> keepFocus) , Just <$> newFocusHook ]) $ defaultConfig { modMask = mod4Mask , manageHook = manageFocus activateOnCurrentWs } xmonad xcf activateOnCurrentWs :: FocusHook activateOnCurrentWs = activated --> asks currentWorkspace >>= new . unlessFocusLock . doShift composeOne :: (Monoid a, Monad m) => [m (Maybe a)] -> m a composeOne [] = return mempty composeOne (mx : xs) = do x <- mx case x of Just y -> return y Nothing -> composeOne xs infixr 0 -?> (-?>) :: Monad m => m Bool -> m a -> m (Maybe a) (-?>) mb mx = do b <- mb if b then liftM Just mx else return Nothing The code is here [gist][1] . It is the version suitable for putting into '.xmonad/lib/XMonad/Hooks/Focus.hs'. I've tried it with Haskell Platform '2013.2.0.0' (ghc 7.6.3), xmonad 0.12 on Debian 8 (Jessie). Developing of this module i'm doing in [github/sgf-xmonad-modules][2]. And my xmonad config, which includes this module and is compiled by `stack` (and installed by `make install`, assuming all dependencies are present) can be found here [github/sgf-xmonad-config][3]. Unfortunately, there is no tests and comments are written not in haddock format at the moment (because i don't know either (yet); though, there are many comments and examples in the code!), thus, i can't make a PR to 'xmonad-contrib' for now. It takes me almost three months to write this module, and since i don't know how long it takes to complete these two missed parts, i announce module now as is (well, it seems working fine and i'm using it). Please, read the long comment section near the top of the module source before using, there are incompatibilities and, well.. specialities. [1]: https://gist.github.com/sgf-dma/99712cbfedf278d2a6e871ac70749b48 [2]: https://github.com/sgf-dma/sgf-xmonad-modules [3]: https://github.com/sgf-dma/sgf-xmonad-config

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