Use (Int,Int,Int,Int) for arbitrary gaps on any side of the screen

Config.hs

@@ -49,9 +49,14 @@ defaultDelta = 3%100
 defaultWindowsInMaster :: Int
 defaultWindowsInMaster = 1
 
--- Default height of gap at top of screen for a menu bar (e.g. 15)
+-- Default offset of drawable screen boundary from physical screen.
-defaultStatusGap :: Int
+-- Anything non-zero here will leave a gap of that many pixels on the
-defaultStatusGap = 0 -- 15 for default dzen
+-- given edge. A useful gap at top of screen for a menu bar (e.g. 15)
+--
+-- Fields are: top, bottom, left, right.
+--
+defaultGap :: (Int,Int,Int,Int)
+defaultGap = (0,0,0,0) -- 15 for default dzen
 
 -- numlock handling:
 --
@@ -115,7 +120,7 @@ keys = M.fromList $
     , ((modMask              , xK_period), sendMessage (IncMasterN (-1))) -- @@ Deincrement the number of windows in the master area
 
     -- toggle the status bar gap
-    , ((modMask              , xK_b     ), modifyGap (\n -> if n == 0 then defaultStatusGap else 0)) -- @@ Toggle the status bar gap
+    , ((modMask              , xK_b     ), modifyGap (\n -> if n == defaultGap then (0,0,0,0) else defaultGap)) -- @@ Toggle the status bar gap
 
     -- quit, or restart
     , ((modMask .|. shiftMask, xK_q                     ), io (exitWith ExitSuccess)) -- @@ Quit xmonad

Main.hs

@@ -61,7 +61,7 @@ main = do
         st = XState
             { windowset     = winset
             , layouts       = M.fromList [(w, safeLayouts) | w <- [0 .. W workspaces - 1]]
-            , statusGap     = defaultStatusGap
+            , statusGap     = defaultGap
             , xineScreens   = xinesc
             , dimensions    = (fromIntegral (displayWidth dpy dflt),
                                fromIntegral (displayHeight dpy dflt)) }

Operations.hs

@@ -68,8 +68,8 @@ view :: WorkspaceId -> X ()
 view = windows . W.view
 
 -- | Modify the size of the status gap at the top of the screen
-modifyGap :: (Int -> Int) -> X ()
+modifyGap :: ((Int,Int,Int,Int) -> (Int,Int,Int,Int)) -> X ()
-modifyGap f = modify (\s -> s { statusGap = max 0 (f (statusGap s)) }) >> refresh
+modifyGap f = modify (\s -> s { statusGap = f (statusGap s) }) >> refresh
 
 -- | Kill the currently focused client. If we do kill it, we'll get a
 -- delete notify back from X.
@@ -127,7 +127,7 @@ hide w = withDisplay $ \d -> do
 --
 refresh :: X ()
 refresh = do
-    XState { windowset = ws, layouts = fls, xineScreens = xinesc, statusGap = gap } <- get
+    XState { windowset = ws, layouts = fls, xineScreens = xinesc, statusGap = (gt,gb,gl,gr) } <- get
     d <- asks display
 
     -- for each workspace, layout the currently visible workspaces
@@ -139,7 +139,10 @@ refresh = do
 
         -- now tile the windows on this workspace, and set gap maybe on current
         rs <- doLayout l (if w == W.current ws
-                            then Rectangle sx (sy + fromIntegral gap) sw (sh - fromIntegral gap)
+                            then Rectangle (sx + fromIntegral gl)
+                                           (sy + fromIntegral gt)
+                                           (sw - fromIntegral (gl + gr))
+                                           (sh - fromIntegral (gt + gb))
                             else r) (W.index this)
         mapM_ (\(win,rect) -> io (tileWindow d win rect)) rs
 

XMonad.hs

@@ -37,23 +37,20 @@ import qualified Data.Map as M
 -- | XState, the window manager state.
 -- Just the display, width, height and a window list
 data XState = XState
-    { windowset         :: !WindowSet           -- ^ workspace list
+    { windowset   :: !WindowSet           -- ^ workspace list
-    , xineScreens       :: ![Rectangle]         -- ^ dimensions of each screen
+    , xineScreens :: ![Rectangle]         -- ^ dimensions of each screen
-    , dimensions        :: !(Position,Position) -- ^ dimensions of the screen,
+    , dimensions  :: !(Position,Position) -- ^ dimensions of the screen,
-    , statusGap         :: !Int                 -- ^ width of status bar
+    , statusGap   :: !(Int,Int,Int,Int)   -- ^ width of status bar
-                                                -- used for hiding windows
+    , layouts     :: !(M.Map WorkspaceId (Layout, [Layout]))  }
-    , layouts           :: !(M.Map WorkspaceId (Layout, [Layout]))  }
                        -- ^ mapping of workspaces to descriptions of their layouts
 
 data XConf = XConf
-    { display           :: Display      -- ^ the X11 display
+    { display       :: Display      -- ^ the X11 display
-
+    , theRoot       :: !Window      -- ^ the root window
-    , theRoot           :: !Window      -- ^ the root window
+    , wmdelete      :: !Atom        -- ^ window deletion atom
-    , wmdelete          :: !Atom        -- ^ window deletion atom
+    , wmprotocols   :: !Atom        -- ^ wm protocols atom
-    , wmprotocols       :: !Atom        -- ^ wm protocols atom
+    , normalBorder  :: !Color       -- ^ border color of unfocused windows
-
+    , focusedBorder :: !Color     } -- ^ border color of the focused window
-    , normalBorder      :: !Color       -- ^ border color of unfocused windows
-    , focusedBorder     :: !Color     } -- ^ border color of the focused window
 
 type WindowSet = StackSet WorkspaceId Window ScreenId