dotfiles/nixos/hm-modules/xmonad/xmonad.hs

--
-- xmonad example config file.
--
-- A template showing all available configuration hooks,
-- and how to override the defaults in your own xmonad.hs conf file.
--
-- Normally, you'd only override those defaults you care about.
--

import XMonad
import Data.Monoid
import System.Exit
import XMonad.Util.EZConfig
import XMonad.Util.SpawnOnce
import XMonad.Hooks.ManageDocks
import XMonad.Hooks.EwmhDesktops

import XMonad.Layout.BinarySpacePartition
import XMonad.Layout.Tabbed
import XMonad.Util.WorkspaceCompare
import XMonad.Hooks.DynamicLog

import qualified XMonad.StackSet as W
import qualified Data.Map        as M

-- The preferred terminal program, which is used in a binding below and by
-- certain contrib modules.
--
myTerminal :: String
myTerminal = "xterm"

xmobarCmd :: String
xmobarCmd = "@xmobar@ @xmobarConfig@"

-- Whether focus follows the mouse pointer.
myFocusFollowsMouse :: Bool
myFocusFollowsMouse = True

-- Whether clicking on a window to focus also passes the click to the window
myClickJustFocuses :: Bool
myClickJustFocuses = False

-- modMask lets you specify which modkey you want to use. The default
-- is mod1Mask ("left alt").  You may also consider using mod3Mask
-- ("right alt"), which does not conflict with emacs keybindings. The
-- "windows key" is usually mod4Mask.
--
myModMask       = mod4Mask

-- The default number of workspaces (virtual screens) and their names.
-- By default we use numeric strings, but any string may be used as a
-- workspace name. The number of workspaces is determined by the length
-- of this list.
--
-- A tagging example:
--
-- > workspaces = ["web", "irc", "code" ] ++ map show [4..9]
--
myWorkspaces    = [1..9] ++ ["0"]

toggleFloat = withFocused (\windowId -> do
                              { floats <- gets (W.floating . windowset);
                                if windowId `M.member` floats
                                then withFocused $ windows . W.sink
                                else float windowId })


------------------------------------------------------------------------
-- Key bindings. Add, modify or remove key bindings here.
--
myKeymap c = 
    -- launch a terminal
    [ ("M-S-<Return>", spawn "alacritty")

    -- launch dmenu
    , ("M-p", spawn "dmenu_run")

    -- launch gmrun
    , ("M-S-p", spawn "gmrun")

    -- close focused window
    , ("M-S-c", io (exitWith ExitSuccess))

     -- Rotate through the available layout algorithms
    , ("M-<Space>", sendMessage NextLayout)

    --  Reset the layouts on the current workspace to default
    -- , ("M-S-Space", setLayout $ XMonad.layoutHook c)

    -- Resize viewed windows to the correct size
    , ("M-n", refresh)

    -- Move focus to the next window
    , ("M-<Tab>", windows W.focusDown)

    -- Move focus to the next window
    , ("M-l", windows W.focusDown)

    -- Move focus to the previous window
    , ("M-k", windows W.focusUp)

    -- Move focus to the master window
    , ("M-m", windows W.focusMaster)

    -- Swap the focused window and the master window
    , ("M-<RET>", windows W.swapMaster)

    -- Swap the focused window with the next window
    , ("M-S-l", windows W.swapDown)

    -- Swap the focused window with the previous window
    , ("M-S-k", windows W.swapUp)

    -- Shrink the master area
    , ("M-j", sendMessage Shrink)

    -- Expand the master area
    , ("M-;", sendMessage Expand)

    -- Push window back into tiling
    , ("M-t", toggleFloat)

    -- Increment the number of windows in the master area
    , ("M-,", sendMessage (IncMasterN 1))

    -- Deincrement the number of windows in the master area
    , ("M-.", sendMessage (IncMasterN (-1)))

    -- , ("M-b", spawn ("pkill xmobar && " ++ xmobarCmd))
    , ("<Print>", spawn "sleep 0.1 ; @screenshot@ select")
    , ("S-<Print>", spawn "@screenshot@ screen")
    , ("C-S-<Print>", spawn "@screenshot@ focused")

    -- Toggle the status bar gap
    -- Use this binding with avoidStruts from Hooks.ManageDocks.
    -- See also the statusBar function from Hooks.DynamicLog.
    --
    -- , ((modm              , xK_b     ), sendMessage ToggleStruts)

    -- Quit xmonad
    , ("M-S-q", kill)

    -- Restart xmonad
    , ("M-q", spawn "xmonad --recompile; xmonad --restart")

    -- Run xmessage with a summary of the default keybindings (useful for beginners)
    , ("M-S-/", spawn ("echo \"" ++ help ++ "\" | xmessage -file -"))
    ]
    ++

    --
    -- mod-[1..9], Switch to workspace N
    -- mod-shift-[1..9], Move client to workspace N
    --
    [("M-"++m++[k], windows $ f i)
        | (i, k) <- zip (XMonad.workspaces c) "0123456789"
        , (f, m) <- [(W.view, ""), (W.shift, "S-")]]
    ++

    --
    -- mod-{w,e,r}, Switch to physical/Xinerama screens 1, 2, or 3
    -- mod-shift-{w,e,r}, Move client to screen 1, 2, or 3
    --
    [("M-"++m++[key], screenWorkspace sc >>= flip whenJust (windows . f))
        | (key, sc) <- zip "wer" [0..]
        , (f, m) <- [(W.view, ""), (W.shift, "S-")]] 


------------------------------------------------------------------------
-- Mouse bindings: default actions bound to mouse events
--
myMouseBindings (XConfig {XMonad.modMask = modm}) = M.fromList $

    -- mod-button1, Set the window to floating mode and move by dragging
    [ ((modm, button1), (\w -> focus w >> mouseMoveWindow w
                                       >> windows W.shiftMaster))

    -- mod-button2, Raise the window to the top of the stack
    , ((modm, button2), (\w -> focus w >> windows W.shiftMaster))

    -- mod-button3, Set the window to floating mode and resize by dragging
    , ((modm, button3), (\w -> focus w >> mouseResizeWindow w
                                       >> windows W.shiftMaster))

    -- you may also bind events to the mouse scroll wheel (button4 and button5)
    ]

------------------------------------------------------------------------
-- Layouts:

-- You can specify and transform your layouts by modifying these values.
-- If you change layout bindings be sure to use 'mod-shift-space' after
-- restarting (with 'mod-q') to reset your layout state to the new
-- defaults, as xmonad preserves your old layout settings by default.
--
-- The available layouts.  Note that each layout is separated by |||,
-- which denotes layout choice.
--
myLayout = tiled ||| simpleTabbed ||| emptyBSP ||| Full
  where
     -- default tiling algorithm partitions the screen into two panes
     tiled   = Tall nmaster delta ratio

     -- The default number of windows in the master pane
     nmaster = 1

     -- Default proportion of screen occupied by master pane
     ratio   = 1/2

     -- Percent of screen to increment by when resizing panes
     delta   = 3/100

------------------------------------------------------------------------
-- Window rules:

-- Execute arbitrary actions and WindowSet manipulations when managing
-- a new window. You can use this to, for example, always float a
-- particular program, or have a client always appear on a particular
-- workspace.
--
-- To find the property name associated with a program, use
-- > xprop | grep WM_CLASS
-- and click on the client you're interested in.
--
-- To match on the WM_NAME, you can use 'title' in the same way that
-- 'className' and 'resource' are used below.
--
myManageHook = composeAll
    [ className =? "MPlayer"        --> doFloat
    , className =? "Gimp"           --> doFloat
    , resource  =? "desktop_window" --> doIgnore
    , resource  =? "kdesktop"       --> doIgnore ]

------------------------------------------------------------------------
-- Event handling

-- * EwmhDesktops users should change this to ewmhDesktopsEventHook
--
-- Defines a custom handler function for X Events. The function should
-- return (All True) if the default handler is to be run afterwards. To
-- combine event hooks use mappend or mconcat from Data.Monoid.
--
myEventHook = mempty

------------------------------------------------------------------------
-- Status bars and logging

-- Perform an arbitrary action on each internal state change or X event.
-- See the 'XMonad.Hooks.DynamicLog' extension for examples.
--
myLogHook = return ()

------------------------------------------------------------------------
-- Startup hook

-- Perform an arbitrary action each time xmonad starts or is restarted
-- with mod-q.  Used by, e.g., XMonad.Layout.PerWorkspace to initialize
-- per-workspace layout choices.
--
-- By default, do nothing.
myStartupHook = do
  spawnOnce "setxkbmap -layout us,sk -variant ,qwerty -option 'grp:lalt_lshift_toggle' -option ctrl:nocaps"
  spawnOnce "dunst"
  spawnOnce "picom --experimental-backends"
  spawnOnce xmobarCmd

myPP = def
   { ppLayout = const ""  -- Don't show the layout name
   , ppSort = getSortByXineramaRule  -- Sort left/right screens on the left, non-empty workspaces after those
   , ppTitle = const ""  -- Don't show the focused window's title
   , ppTitleSanitize = const ""  -- Also about window's title
   , ppVisible = wrap "(" ")"  -- Non-focused (but still visible) screen
   }

------------------------------------------------------------------------
-- Now run xmonad with all the defaults we set up.

-- Run xmonad with the settings you specify. No need to modify this.
--
-- main = xmonad $ ewmh $ docks $ defaults
main = xmonad . ewmh =<< statusBar xmobarCmd myPP toggleStrutsKey defaults
toggleStrutsKey XConfig { XMonad.modMask = modMask } = (modMask, xK_b)

-- A structure containing your configuration settings, overriding
-- fields in the default config. Any you don't override, will
-- use the defaults defined in xmonad/XMonad/Config.hs
--
-- No need to modify this.
--
defaults = let c = def {
      -- simple stuff
        terminal           = myTerminal,
        focusFollowsMouse  = myFocusFollowsMouse,
        clickJustFocuses   = myClickJustFocuses,
        modMask            = myModMask,
        workspaces         = myWorkspaces,

      -- key bindings
        -- keys               = myKeys,
        mouseBindings      = myMouseBindings,

      -- hooks, layouts
        layoutHook         = avoidStruts $ myLayout,
        manageHook         = manageDocks <+> myManageHook,
        handleEventHook    = myEventHook,
        logHook            = myLogHook,
        startupHook        = myStartupHook,

      -- Looks
        focusedBorderColor = "#5c5c5c",
        normalBorderColor = "#222222",
        borderWidth = 2
    } in additionalKeysP c (myKeymap c)

-- | Finally, a copy of the default bindings in simple textual tabular format.
help :: String
help = unlines ["The default modifier key is 'alt'. Default keybindings:",
    "",
    "-- launching and killing programs",
    "mod-Shift-Enter  Launch xterminal",
    "mod-p            Launch dmenu",
    "mod-Shift-p      Launch gmrun",
    "mod-Shift-c      Close/kill the focused window",
    "mod-Space        Rotate through the available layout algorithms",
    "mod-Shift-Space  Reset the layouts on the current workSpace to default",
    "mod-n            Resize/refresh viewed windows to the correct size",
    "",
    "-- move focus up or down the window stack",
    "mod-Tab        Move focus to the next window",
    "mod-Shift-Tab  Move focus to the previous window",
    "mod-j          Move focus to the next window",
    "mod-k          Move focus to the previous window",
    "mod-m          Move focus to the master window",
    "",
    "-- modifying the window order",
    "mod-Return   Swap the focused window and the master window",
    "mod-Shift-j  Swap the focused window with the next window",
    "mod-Shift-k  Swap the focused window with the previous window",
    "",
    "-- resizing the master/slave ratio",
    "mod-h  Shrink the master area",
    "mod-l  Expand the master area",
    "",
    "-- floating layer support",
    "mod-t  Push window back into tiling; unfloat and re-tile it",
    "",
    "-- increase or decrease number of windows in the master area",
    "mod-comma  (mod-,)   Increment the number of windows in the master area",
    "mod-period (mod-.)   Deincrement the number of windows in the master area",
    "",
    "-- quit, or restart",
    "mod-Shift-q  Quit xmonad",
    "mod-q        Restart xmonad",
    "mod-[1..9]   Switch to workSpace N",
    "",
    "-- Workspaces & screens",
    "mod-Shift-[1..9]   Move client to workspace N",
    "mod-{w,e,r}        Switch to physical/Xinerama screens 1, 2, or 3",
    "mod-Shift-{w,e,r}  Move client to screen 1, 2, or 3",
    "",
    "-- Mouse bindings: default actions bound to mouse events",
    "mod-button1  Set the window to floating mode and move by dragging",
    "mod-button2  Raise the window to the top of the stack",
    "mod-button3  Set the window to floating mode and resize by dragging"]