#+TITLE: XMonad Config
#+PROPERTY: header-args :tangle xmonad.hs

* XMonad Config
Xmonad is a dynamically tiling X11 window manager that is written and
configured in Haskell. Official documentation: https://xmonad.org

This is the xmonad configuration of Derek Taylor (DistroTube)
My YouTube: http://www.youtube.com/c/DistroTube
My GitLab:  http://www.gitlab.com/dwt1/

This config was getting massively long, so I have made this a modular
config that sources multiple config files. Look under the imports for
"Custom" modules. Those are my config files and they can be found in:
~/.xmonad/lib/Custom

Keep in mind, that my configs are purposely bloated with examples of
what you can do with xmonad. It is written more as a study guide rather
than a config that you should download and use.

* IMPORTS
These are Haskell modules that we must import so that we can use their functions later in the config.

#+BEGIN_SRC haskell
    -- Custom (my personal configs)
import Custom.MyGridMenu
import Custom.MyKeys
import Custom.MyLayouts
import Custom.MyPrompts
import Custom.MyScratchpads
import Custom.MyTreeMenu
import Custom.MyVariables

    -- Base
import XMonad
import Data.Monoid
import System.IO (hPutStrLn)
import XMonad.Actions.MouseResize

    -- Hooks
import XMonad.Hooks.DynamicLog (dynamicLogWithPP, wrap, xmobarPP, xmobarColor, shorten, PP(..))
import XMonad.Hooks.EwmhDesktops  -- for some fullscreen events, also for xcomposite in obs.
import XMonad.Hooks.FadeInactive
import XMonad.Hooks.ManageDocks (avoidStruts, docksEventHook, manageDocks, ToggleStruts(..))
import XMonad.Hooks.ManageHelpers (isFullscreen, doFullFloat)
import XMonad.Hooks.ServerMode
import XMonad.Hooks.SetWMName
import XMonad.Hooks.WorkspaceHistory

    -- Utilities
import XMonad.Util.EZConfig (additionalKeysP)
import XMonad.Util.NamedScratchpad
import XMonad.Util.Run (runProcessWithInput, safeSpawn, spawnPipe)
import XMonad.Util.SpawnOnce
#+END_SRC

* AUTOSTART
These are commands we want XMonad to execute on startup, such as running a compositor, setting our wallpaper, starting the emacs daemon, and starting our system tray and the applications that belong in it.

#+BEGIN_SRC haskell
myStartupHook :: X ()
myStartupHook = do
          spawnOnce "nitrogen --restore &"
          spawnOnce "picom &"
          spawnOnce "nm-applet &"
          spawnOnce "volumeicon &"
          spawnOnce "trayer --edge top --align right --widthtype request --padding 6 --SetDockType true --SetPartialStrut true --expand true --monitor 1 --transparent true --alpha 0 --tint 0x292d3e --height 22 &"
          spawnOnce "/usr/bin/emacs --daemon &"
          -- spawnOnce "kak -d -s mysession &"
          setWMName "LG3D"
#+END_SRC

* WORKSPACES
My workspaces are clickable meaning that the mouse can be used to switch
workspaces. This requires xdotool. You need to use UnsafeStdInReader instead
of simply StdInReader in xmobar config so you can pass actions to it. Also,
you will notice I add <fn> tags to the clickable workspaces to select from
the additionalFonts that I have set in my xmobar configs.

#+BEGIN_SRC haskell
xmobarEscape :: String -> String
xmobarEscape = concatMap doubleLts
  where
        doubleLts '<' = "<<"
        doubleLts x   = [x]

myWorkspaces :: [String]
myWorkspaces = clickable . (map xmobarEscape)
               -- $ ["1", "2", "3", "4", "5", "6", "7", "8", "9"]
               $ ["dev", "www", "sys", "doc", "vbox", "chat", "mus", "vid", "gfx"]
  where
        clickable l = [ "<action=xdotool key super+" ++ show (n) ++ "> " ++ ws ++ " </action>" |
                      (i,ws) <- zip [1..9] l,
                      let n = i ]
#+END_SRC

* MANAGEHOOK
Sets some rules for certain programs. Examples include forcing certain
programs to always float, or to always appear on a certain workspace.
Forcing programs to a certain workspace with a doShift requires xdotool
if you are using clickable workspaces. You need the className or title
of the program. Use xprop to get this info.

#+BEGIN_SRC haskell
myManageHook :: XMonad.Query (Data.Monoid.Endo WindowSet)
myManageHook = composeAll
     -- using 'doShift ( myWorkspaces !! 7)' sends program to workspace 8!
     -- I'm doing it this way because otherwise I would have to write out
     -- the full name of my workspaces.
     [ className =? "obs"     --> doShift ( myWorkspaces !! 7 )
     , title =? "firefox"     --> doShift ( myWorkspaces !! 1 )
     , className =? "mpv"     --> doShift ( myWorkspaces !! 7 )
     , className =? "vlc"     --> doShift ( myWorkspaces !! 7 )
     , className =? "Gimp"    --> doShift ( myWorkspaces !! 8 )
     , className =? "Gimp"    --> doFloat
     , title =? "Oracle VM VirtualBox Manager"     --> doFloat
     , className =? "VirtualBox Manager" --> doShift  ( myWorkspaces !! 4 )
     , (className =? "firefox" <&&> resource =? "Dialog") --> doFloat  -- Float Firefox Dialog
     ] <+> namedScratchpadManageHook myScratchPads
#+END_SRC

* LOGHOOK
Sets opacity for inactive (unfocused) windows. I prefer to not use
this feature so I've set opacity to 1.0. If you want opacity, set
this to a value of less than 1 (such as 0.9 for 90% opacity).

#+BEGIN_SRC haskell
myLogHook :: X ()
myLogHook = fadeInactiveLogHook fadeAmount
    where fadeAmount = 1.0
#+END_SRC

* MAIN
This is the "main" of XMonad. This where everything in our configs comes together and works.

#+BEGIN_SRC haskell
main :: IO ()
main = do
    -- Launching three instances of xmobar on their monitors.
    xmproc0 <- spawnPipe "xmobar -x 0 /home/dt/.config/xmobar/xmobarrc0"
    xmproc1 <- spawnPipe "xmobar -x 1 /home/dt/.config/xmobar/xmobarrc2"
    xmproc2 <- spawnPipe "xmobar -x 2 /home/dt/.config/xmobar/xmobarrc1"
    -- the xmonad, ya know...what the WM is named after!
    xmonad $ ewmh def
        { manageHook = ( isFullscreen --> doFullFloat ) <+> myManageHook <+> manageDocks
        -- Run xmonad commands from command line with "xmonadctl command". Commands include:
        -- shrink, expand, next-layout, default-layout, restart-wm, xterm, kill, refresh, run,
        -- focus-up, focus-down, swap-up, swap-down, swap-master, sink, quit-wm. You can run
        -- "xmonadctl 0" to generate full list of commands written to ~/.xsession-errors.
        , handleEventHook    = serverModeEventHookCmd
                               <+> serverModeEventHook
                               <+> serverModeEventHookF "XMONAD_PRINT" (io . putStrLn)
                               <+> docksEventHook
        , modMask            = myModMask
        , terminal           = myTerminal
        , startupHook        = myStartupHook
        , layoutHook         = myLayoutHook
        , workspaces         = myWorkspaces
        , borderWidth        = myBorderWidth
        , normalBorderColor  = myNormColor
        , focusedBorderColor = myFocusColor
        , logHook = workspaceHistoryHook <+> myLogHook <+> dynamicLogWithPP xmobarPP
                        { ppOutput = \x -> hPutStrLn xmproc0 x  >> hPutStrLn xmproc1 x  >> hPutStrLn xmproc2 x
                        , ppCurrent = xmobarColor "#c3e88d" "" . wrap "[" "]" -- Current workspace in xmobar
                        , ppVisible = xmobarColor "#c3e88d" ""                -- Visible but not current workspace
                        , ppHidden = xmobarColor "#82AAFF" "" . wrap "*" ""   -- Hidden workspaces in xmobar
                        , ppHiddenNoWindows = xmobarColor "#c792ea" ""        -- Hidden workspaces (no windows)
                        , ppTitle = xmobarColor "#b3afc2" "" . shorten 60     -- Title of active window in xmobar
                        , ppSep =  "<fc=#666666> <fn=2>|</fn> </fc>"                     -- Separators in xmobar
                        , ppUrgent = xmobarColor "#C45500" "" . wrap "!" "!"  -- Urgent workspace
                        , ppExtras  = [windowCount]                           -- # of windows current workspace
                        , ppOrder  = \(ws:l:t:ex) -> [ws,l]++ex++[t]
                        }
        } `additionalKeysP` myKeys

#+END_SRC