- xmonad - Haskell.org

Issue 508 in xmonad: The UpdatePointer action doesn't support XFCE multihead
by codesite-noreply＠google.com 13 Jun '12

13 Jun '12

Status: New Owner: ---- New issue 508 by vox.cogi...@gmail.com: The UpdatePointer action doesn't support XFCE multihead http://code.google.com/p/xmonad/issues/detail?id=508 1. Start xmonad in XFCE as directed through the guide on the xmonad homepage. System must have at least two monitors. 2. Open a window on main monitor. 3. Switch focus to second monitor, using Alt-E. 4. Switch focus back to main monitor, using Alt-W. One would expect the mouse cursor to start in monitor 1, go to monitor 2 and then back to monitor 1. What actually happens is that the final step isn't executed, so that the cursor remains on the empty monitor. If there is also a window open on the off monitor, the bug doesn't occur. I'm using xmonad 0.10-3 on Arch Linux. I've attached my main xmonad.hs file, as well as a simplified file which exhibits the same bug. Neither of them have any output when fed to xmonad --recompile. Attachments: xmonad-simplified.hs 142 bytes xmonad.hs 1.3 KB

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Re: [xmonad] Changes to XPrompt
by Carlos López Camey 06 Jun '12

06 Jun '12

2012/5/7 Carlos López Camey <c.lopez(a)kmels.net>: > 2012/5/6 <wagnerdm(a)seas.upenn.edu>: >> Hello Carlos! >> >> >> Quoting Carlos López Camey <c.lopez(a)kmels.net>: >> >>> The changes would be: >>> * Autocomplete based on several modes (there is always a mode set) >>> The autocomplete items are generally path to files, mode 1 >>> could use for example `locate %s`, mode 2 `recollq` [0] (searches for >>> tokens inside files) and mode 3 `locate --regexp %s` to autocomplete. >> >> >> mkXPrompt already seems to allow you to specify an IO action to run to >> create your list of completions. That IO action can itself do any of the >> things you name, so I don't think you should need to make any changes to >> realize this wish. >> >> >>> * one-column-only list of autocompletions >>> For the purpose, they are always paths, so they are quite >>> large to keep it in different columns. But this be a setting on the >>> configuration. >>> >>> * Navigating through completion items and changing autocompletion >>> list on "real time" >>> There is always an item highlighted (if items > 0) >>> The highlighted item not necesarilly is equal to the >>> prompt buffer text. I may write "xmonad.hs" but the autocomplete item >>> shows a full path highlighted. This implies adding an additional field to >>> XPState, complIndex :: Int, that knows which item to highlight next (not >>> based on the buffer's text) >> >> >> I'm not an XPrompt user, so I can't comment on whether these are possible or >> not right now, but if not, they sound like nice things to add. >> >> >>> * Action is not necesarilly a String -> X a. >>> >>> I'd like to count on a Map Extension (String -> String) in some >>> config, where type Extension = String. This map would describe what to >>> do with each file depending on its extension. e.g. an element of the >>> map could be (".org",\path -> "emacs "++path). So I'm not sure how the >>> new signature would be: String -> X a? but this String would be the >>> command sent to spawn, computed using a function that uses the map >>> described above. >> >> >> You may accomplish this by having your String -> X a function close over the >> Map you want to query; for example, something like this: >> >> fConstantMap :: String -> X a >> fConstantMap s = case lookup constMap (extension s) of >> Nothing -> spawn s >> Just modifier -> spawn (modifier s) >> where >> extension = reverse . take 4 . reverse >> constMap = fromList [ >> (".org", \path -> "emacs " ++ path), >> (".doc", \path -> "libreoffice " ++ path) >> ] >> >> or, if the Map is going to be built dynamically rather than known at compile >> time, you can have the map be an argument to the function and pass the >> function partially-applied to mkXPrompt[WithReturn]. >> >> Good luck, and I hope this helps with half your requests! >> ~d >> > Greetings again, I forgot to copy the list earlier! > Hello, thanks for the help! After reading your comments, I think it is > possible to make the changes to XPrompt. Modifications to XPrompt, > XPState and XPConfig shouldn't have to break configs (default settings > would have to be added to defaultXPConfig, as well as default > definitions for possible new functions on XPrompt). > > Back to it then. > Carlos I've coded a bit more, and I think that if different modes are to be added *and* backwards _api compatibility_ is to be kept, it is necessary to include either Data.Typeable or Data.Proxy according to [0]. Correct me if I'm wrong but we can't reify *any* function with Typeable? With Data.Proxy it is possible but xmonad-contrib would need package `tagged` as a dependency. There is a way to keep backwards compatibility to xmonad.hs files but not to modules that use XPrompt. They (XMonad/Prompt/*.hs and XMonad/Actions/Search.hs) must include an instance of XPMode and provide it to mkPrompt, instead of both the explicit completion and action functions, i.e. replace mkXPrompt t conf compl action with mkXPrompt t conf myMode where myMode = XPMode { complFunction = .. action = .. } Would that be ok? I don't think many xmonad.hs use mkXPrompt directly. Carlos

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Raise focused floating window ?
by David Unric 06 Jun '12

06 Jun '12

Hi, probably a simple question but how can I configure Xmonad to raise (ie. move to the top of the stack, in front of all windows) a floating window after it recieves a focus with the keyboard ? Trying to mimic Awesome's WM floating layout, window focused with <mod>+j or <mod>+k is raised above all other windows. Thanks. David

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Configuration question
by Evan Driscoll 06 Jun '12

06 Jun '12

I have a question about how to configure things for a certain behavior. A short version which suffices: is it possible to set up a keybinding to change the keybindings? Here's what I'm actually trying to do: I find that most of the time my workflow basically has me changing between two or three different "projects". (For instance, working on a couple different development projects with different source trees, etc.) Each project usually takes up a couple virtual desktops. What I would like is something like a two-tiered virtual desktop setup, where I could have different project spaces each with its own set of virtual desktops. So for instance, Mod-F1 would change to project A, and Mod-1 through Mod-5 would choose between the desktops for project A. Then Mod-F2 would change to project B, and Mod-1 through Mod-5 would choose between the desktops for Project B. I have a small amount of Haskell knowledge, but only a small amount. I'd appreciate any suggestions. Evan

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Prompt completion: Longest common string
by Pablo Olmos de Aguilera Corradini 06 Jun '12

06 Jun '12

Well, I don't know if I can be clear enough; I'm looking to be able to "complete" when I press tab instead of cycle through every option. For example: Run: gno a lot of output that starts with gnome- I would expect that pressing <Tab> turns gno to gnome- I've been looking trough the Xmonad.Prompt and Xmonad.Prompt.Shell in the contrib docs, but I can't find the correct function to do it. I guess it have to do with 'mkComplFunFromList' or 'nextCompletion', but I don't how (or where) to start :( Any help/guidance would be greatly appreciated. Regards, -- Pablo Olmos de Aguilera Corradini - @PaBLoX http://www.glatelier.org/ http://about.me/pablox/ http://www.linkedin.com/in/pablooda/ Linux User: #456971 - http://counter.li.org/

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[patch] EwmhDesktops: make setActiveWindow set _NET_WM_STATE for gtk-3.4
by Jens Petersen 03 Jun '12

03 Jun '12

Hi, I am not an expert on EWMH but this change seems to be necessary for coming GTK 3.4, when using themes like Adwaita, that now supports @theme_unfocused_fg_color which causes unfocused application's UI to be rendered unfocused in addition to the normal unfocused window manager decoration. Current desktopConfig triggers this causing all Gtk3 apps to be rendered as unfocused. Anyway I would appreciate review of this patch and feedback: perhaps there is a better more correct fix? I am planning to apply a patch for this shortly to Fedora 17 xmonad-contrib, otherwise GTK apps in gnomeConfig etc look terrible. There are more technical details in the changelog. I haven't found any other window manager that triggers this issue yet. Jens

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xmobar disappears
by Michael Norrish 01 Jun '12

01 Jun '12

When I restart xmonad with a M-q command my xmobar disappears. There's an xmobar process running and it's not obviously blocked. (strace shows it doing things, including recvfrom and writev both with non-zero positive return codes). Xmonad also appears to think it's there in at least some sense because there's a strut on the top of the screen. But instead of there being anything visible, I can just see the wallpaper window... This is all under LightDM/Ubuntu12.04. If I attempt to alter the "root window" (with something like display -window root some.jpg) the wallpaper doesn't change, suggesting that there is a wallpaper window lying on top of the "real root window". Also, the wallpaper responds to right-clicks and brings up a gnome-config type menu. So, perhaps my xmobar restarts underneath the wallpaper and is thus obscured. If so, how might I bring it to the fore? I'm running a cabal xmonad and xmobar on top of Ubuntu12.04, with an /usr/share/xsessions/xmonad.desktop that looks like: [Desktop Entry] Encoding=UTF-8 Name=XMonad Comment=Lightweight tiling window manager Exec=gnome-session --session=xmonad Icon=xmonad.png Type=XSession and a /usr/share/gnome-session/sessions/xmonad.session that looks like: [GNOME Session] Name=Xmonad session RequiredComponents=gnome-settings-daemon; RequiredProviders=windowmanager;notifications; DefaultProvider-windowmanager=xmonad DefaultProvider-notifications=notification-daemon Thanks, Michael

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Best way to autostart applications?
by Pablo Olmos de Aguilera Corradini 23 May '12

23 May '12

I know there are a couple of ways to autostart, through xinit, xsession, 'spawn', 'spawn' a shell script, ecc. Afaik there's not a unique answer. Sometimes I need the apps to run at the end, after the whole environment is loaded. I don't know if there's a hook or something like that. Regards, -- Pablo Olmos de Aguilera Corradini - @PaBLoX http://www.glatelier.org/ http://about.me/pablox/ http://www.linkedin.com/in/pablooda/ Linux User: #456971 - http://counter.li.org/

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Migrating from StumpWM...
by Rafael Ibraim 19 May '12

19 May '12

Hi! I'm migrating to Xmonad after 2 or 3 years of StumpWM and trying to get keyBindings "stump-like". My main problem is that I don't know how to use "C-t"(Control followed by t) as a mod key. I tried this: -----------------8<------------------------------------------- import XMonad import XMonad.Core main = do xmonad $ defaultConfig { borderWidth = 2, modMask = myModMask } myModMask = mod4Mask .|. xK_t ------------------------------>8------------------------------- But "xK_t" is not found... I guess I'm missing some import line, but I couldn't imagine which one (Also, I will use Control instead of Win Key). There's also two StumpWM commands that I don't know if there's something equivalent: "run-or-raise": Type an application name. If it's already started, get it focused; if not, launch it. "execute": Type anything and it will be executed like "bash -c <whathever-you-typed>". Simple as that. I'm mainly a lisp programmer, but I'm completely ignorant to haskell, so any help would be really appreciated. -- Rafael Ibraim Oracle Database SQL Expert Linux User Number: #537480 ibraim.gm(a)gmail.com

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Re: [xmonad] Strange workspace switching bug in my config
by Leo Alekseyev 18 May '12

18 May '12

On Sun, May 13, 2012 at 8:45 AM, Norbert Zeh <nzeh(a)cs.dal.ca> wrote: > Leo Alekseyev [2012.05.13 0127 -0400]: >> Hi all, >> A couple of years back I made the following addition to my xmonad.hs: >> instead of 10 workspaces, it admits 20 workspaces, logically arranged >> in two rows of 10. I think of it as having a "scratch" workspace for >> every main workspace, and I use up/down arrows to switch between the >> main and the scratch workspace. For instance, if you are on workspace >> 4, Mod4-<down> will move to workspace 4SCR and Mod4-<up> will move >> back to workspace 4. >> >> Recently this config started misbehaving (without any changes to >> xmonad.hs, but with possible changes in xmonad/GHC version to 0.10 and >> 7.4.1 as my system was upgraded). In particular, in the example >> above, now Mod4-<down> moves from workspace 4 to workspace 3SCR and >> Mod4-<up> then moves from 3SCR to 2. To fix it, I have to log in and >> out of X, but the problem always reoccurs, possibly after sleep/resume >> cycle(?). >> >> The embarrassing thing here is that I haven't touched Haskell in a >> while, and barely grok my config anymore, so I don't know where to >> start troubleshooting. The code I described seems straightforward >> enough, so it's my hope that maybe someone here can tell me what is >> going on without too much effort... >> >> The relevant parts of my config are below, and the full file in its >> horrifying glory is at http://hpaste.org/68453. If someone seems >> something obviously amiss, please shout... >> >> --leo >> >> myWorkspaces = ["1:terminals", "2:emacs", "3:web", "4", "5", "6", >> "7","8","9","0"] ++ map (\x -> show x ++ "SCR") ([1..9]++[0]) >> ..... >> >> zeroSub 0 = 10 >> zeroSub x = x >> >> jumpToMain = gets windowset >>= \W.StackSet { W.current = W.Screen { >> W.workspace = w } } -> withNthWorkspace W.greedyView (-1+(zeroSub $ >> read [head(W.tag w)])) >> jumpToScratch = gets windowset >>= \W.StackSet { W.current = W.Screen >> { W.workspace = w } } -> withNthWorkspace W.greedyView (9+(zeroSub $ >> read [head(W.tag w)])) > > The math here looks all wrong, and I'm surprised that it worked at all before. > What you want, I think, is the following: > > jumpToMain = gets (W.tag . W.workspace . W.current . windowset) > >>= W.greedyView . toMain > where > toMain ws = [head ws] > > jumpToScratch = gets (W.tag . W.workspace . W.current . windowset) > >>= W.greedyView . toScratch > where > toScratch ws | length ws == 1 = ws ++ "SCR" > | otherwise = ws > > The idea here is that you simply want to add or take away the "SCR" suffix in > the workspace tag or, in the latter case, do nothing if it's already present. Hi Norbert, Yes, my original math was kind of dodgy... Your solution seems better, but it doesn't compile for me... any ideas? xmonad.hs:452:14: No instance for (MonadState XState ((->) (W.StackSet [Char] l3 a3 s3 sd3))) arising from a use of `gets' Possible fix: add an instance declaration for (MonadState XState ((->) (W.StackSet [Char] l3 a3 s3 sd3))) In the first argument of `(>>=)', namely `gets (tag . W.workspace . W.current . windowset)' In the expression: gets (tag . W.workspace . W.current . windowset) >>= W.greedyView . toMain In an equation for `jumpToMain': jumpToMain = gets (tag . W.workspace . W.current . windowset) >>= W.greedyView . toMain where toMain ws = [head ws] xmonad.hs:456:17: No instance for (MonadState XState ((->) (W.StackSet [Char] l1 a1 s1 sd1))) arising from a use of `gets' Possible fix: add an instance declaration for (MonadState XState ((->) (W.StackSet [Char] l1 a1 s1 sd1))) In the first argument of `(>>=)', namely `gets (tag . W.workspace . W.current . windowset)' In the expression: gets (tag . W.workspace . W.current . windowset) >>= W.greedyView . toScratch In an equation for `jumpToScratch': jumpToScratch = gets (tag . W.workspace . W.current . windowset) >>= W.greedyView . toScratch where toScratch ws | length ws == 1 = ws ++ "SCR" | otherwise = ws

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