6 files changed, 799 insertions, 0 deletions
diff --git a/XMonad/Stockholm/Font.hs b/XMonad/Stockholm/Font.hs
new file mode 100644
index 0000000..b30a1e7
--- /dev/null
+++ b/XMonad/Stockholm/Font.hs
@@ -0,0 +1,124 @@
+{-# LANGUAGE CPP #-}
+
+module XMonad.Stockholm.Font
+    ( printStringCentered
+    , printStringXMF'
+    ) where
+
+import XMonad
+import XMonad.Util.Font
+
+
+printStringCentered :: (Functor m, MonadIO m)
+                    => Display -> Drawable -> XMonadFont
+                    -> GC -> Rectangle -> String
+                    -> m ()
+printStringCentered d p xmf gc r s = do
+    let x = rect_x r
+        y = rect_y r
+        w = rect_width r
+        h = rect_height r
+
+    text_w <- textWidthXMF d xmf s
+    (text_ascent, _) <- textExtentsXMF xmf s
+
+    let text_x = x + round ((fi w - fi text_w) / 2)
+        text_y = y + round ((fi h + fi text_h) / 2)
+        text_h = text_ascent
+
+    printStringXMF' d p xmf gc "" "" text_x text_y s
+
+
+-- from xmonad-contrib's XMonad.Util.Font, (c) 2007 Andrea Rossato and Spencer Janssen
+printStringXMF' :: (Functor m, MonadIO m) => Display -> Drawable -> XMonadFont -> GC -> String -> String
+            -> Position -> Position -> String  -> m ()
+printStringXMF' d p (Core fs) gc fc bc x y s = io $ do
+    setFont d gc $ fontFromFontStruct fs
+    --tv [fc',bc'] <- mapM (stringToPixel d) [fc,bc]
+    --tv setForeground d gc fc'
+    --tv setBackground d gc bc'
+    drawImageString d p gc x y s
+printStringXMF' d p (Utf8 fs) gc fc bc x y s = io $ do
+    --tv [fc',bc'] <- mapM (stringToPixel d) [fc,bc]
+    --tv setForeground d gc fc'
+    --tv setBackground d gc bc'
+    io $ wcDrawImageString d p fs gc x y s
+#ifdef XFT
+printStringXMF' dpy drw fs@(Xft font) gc fc bc x y s = do
+  let screen   = defaultScreenOfDisplay dpy
+      colormap = defaultColormapOfScreen screen
+      visual   = defaultVisualOfScreen screen
+  --tv bcolor <- stringToPixel dpy bc
+  (a,d)  <- textExtentsXMF fs s
+  gi <- io $ xftTextExtents dpy font s
+  --tv io $ setForeground dpy gc bcolor
+  io $ fillRectangle dpy drw gc (x - fi (xglyphinfo_x gi))
+                                (y - fi a)
+                                (fi $ xglyphinfo_xOff gi)
+                                (fi $ a + d)
+  io $ withXftDraw dpy drw visual colormap $
+         \draw -> withXftColorName dpy visual colormap fc $
+                   \color -> xftDrawString draw color font x y s
+#endif
+
+
+
+
+
+-- --my_printStringXMF :: (Functor m, MonadIO m) => Display -> Drawable -> XMonadFont -> GC -> String -> String
+-- --            -> Position -> Position -> String  -> m ()
+-- my_printStringXMF (Core fs) d p gc x y s = do
+--     setFont d gc $ fontFromFontStruct fs
+--     -- [fc',bc'] <- mapM (stringToPixel d) [fc,bc]
+--     -- setForeground d gc fc'
+--     -- setBackground d gc bc'
+--     drawImageString d p gc x y s
+-- my_printStringXMF (Utf8 fs) d p gc x y s = do
+--     -- [fc',bc'] <- mapM (stringToPixel d) [fc,bc]
+--     -- setForeground d gc fc'
+--     -- setBackground d gc bc'
+--     wcDrawImageString d p fs gc x y s
+-- #ifdef XFT
+-- my_printStringXMF dpy drw fs@(Xft font) gc fc bc x y s = do
+--   let screen   = defaultScreenOfDisplay dpy
+--       colormap = defaultColormapOfScreen screen
+--       visual   = defaultVisualOfScreen screen
+--   bcolor <- stringToPixel dpy bc
+--   (a,d)  <- textExtentsXMF fs s
+--   gi <- io $ xftTextExtents dpy font s
+--   io $ setForeground dpy gc bcolor
+--   io $ fillRectangle dpy drw gc (x - fromIntegral (xglyphinfo_x gi))
+--                                 (y - fromIntegral a)
+--                                 (fromIntegral $ xglyphinfo_xOff gi)
+--                                 (fromIntegral $ a + d)
+--   io $ withXftDraw dpy drw visual colormap $
+--          \draw -> withXftColorName dpy visual colormap fc $
+--                    \color -> xftDrawString draw color font x y s
+-- #endif
+
+
+
+-- --textWidthXMF :: MonadIO m => Display -> XMonadFont -> String -> m Int
+-- my_textWidthXMF _   (Utf8 fs) s = return $ fromIntegral $ wcTextEscapement fs s
+-- my_textWidthXMF _   (Core fs) s = return $ fromIntegral $ textWidth fs s
+-- #ifdef XFT
+-- my_TextWidthXMF dpy (Xft xftdraw) s = liftIO $ do
+--     gi <- xftTextExtents dpy xftdraw s
+--     return $ xglyphinfo_xOff gi
+-- #endif
+-- 
+-- my_textExtentsXMF :: MonadIO m => XMonadFont -> String -> m (Int32,Int32)
+-- my_textExtentsXMF (Utf8 fs) s = do
+--   let (_,rl)  = wcTextExtents fs s
+--       ascent  = fromIntegral $ - (rect_y rl)
+--       descent = fromIntegral $ rect_height rl + (fromIntegral $ rect_y rl)
+--   return (ascent, descent)
+-- my_textExtentsXMF (Core fs) s = do
+--   let (_,a,d,_) = textExtents fs s
+--   return (a,d)
+-- #ifdef XFT
+-- my_textExtentsXMF (Xft xftfont) _ = io $ do
+--   ascent  <- fromIntegral `fmap` xftfont_ascent  xftfont
+--   descent <- fromIntegral `fmap` xftfont_descent xftfont
+--   return (ascent, descent)
+-- #endif
diff --git a/XMonad/Stockholm/Pager.hs b/XMonad/Stockholm/Pager.hs
new file mode 100644
index 0000000..cdfa432
--- /dev/null
+++ b/XMonad/Stockholm/Pager.hs
@@ -0,0 +1,174 @@
+module XMonad.Stockholm.Pager
+    ( defaultPagerConfig
+    , defaultWindowColors
+    , defaultWorkspaceColors
+    , MatchMethod(..)
+    , pager
+    , PagerConfig(..)
+    ) where
+
+import qualified XMonad.StackSet as W
+
+import Data.List (find)
+import Data.Maybe (catMaybes)
+import Graphics.X11
+import XMonad
+import XMonad.Hooks.UrgencyHook
+import XMonad.Util.Font (fi, stringToPixel)
+
+import XMonad.Stockholm.Rhombus
+
+
+data PagerConfig = PagerConfig
+    { pc_font               :: String
+    , pc_cellwidth          :: Dimension
+    , pc_margin             :: Dimension
+    , pc_matchmethod        :: MatchMethod
+    , pc_wrap               :: Bool
+    , pc_workspaceColors    :: Bool -> Bool -> Bool -> (String, String, String)
+    , pc_windowColors       :: Bool -> Bool -> Bool -> Bool -> Bool -> (String, String)
+    }
+
+
+defaultPagerConfig :: PagerConfig
+defaultPagerConfig = PagerConfig "xft:Sans-8" 100 0 MatchInfix True defaultWorkspaceColors defaultWindowColors
+
+
+pager :: PagerConfig -> (String -> X ()) -> [String] -> X ()
+pager pc = rhombus defaultRhombusConfig
+    { rc_font           = pc_font pc
+    , rc_cellwidth      = pc_cellwidth pc
+    , rc_margin         = pc_margin pc
+    , rc_matchmethod    = pc_matchmethod pc
+    , rc_wrap           = pc_wrap pc
+    , rc_colors         = pc_workspaceColors pc
+    , rc_paint          = pagerPaint pc
+    }
+
+
+defaultWorkspaceColors :: Bool -- workspace has focus
+                       -> Bool -- workspace name matches incremental search
+                       -> Bool -- workspace is the current one
+                       -> (String, String, String) -- workspace border, background color, and foreground color
+defaultWorkspaceColors False False False = ("#101010","#050505","#202020")
+defaultWorkspaceColors False False  True = ("#101010","#050505","#202020")
+defaultWorkspaceColors False  True False = ("#404040","#202020","#b0b0b0")
+defaultWorkspaceColors False  True  True = ("#101010","#050505","#505050")
+defaultWorkspaceColors  True     _ False = ("#808020","#404010","#f0f0b0")
+defaultWorkspaceColors  True     _  True = ("#404010","#202005","#909050")
+
+
+defaultWindowColors :: Bool -- window's workspace has focus
+                    -> Bool -- window's workspace name matches incremental search
+                    -> Bool -- window's workspace the current one
+                    -> Bool -- window is urgent
+                    -> Bool -- window has focus
+                    -> (String, String) -- window border and background color
+
+defaultWindowColors   wsf     m     c     u  True = ("#802020", snd $ defaultWindowColors wsf m c u False)
+
+defaultWindowColors False False False False     _ = ("#111111","#060606")
+defaultWindowColors False False False  True     _ = ("#802020","#401010")
+defaultWindowColors False False  True False     _ = ("#101010","#050505")
+defaultWindowColors False False  True  True     _ = ("#401010","#200505")
+defaultWindowColors False  True False False     _ = ("#202080","#101040")
+defaultWindowColors False  True False  True     _ = ("#802080","#401040")
+defaultWindowColors False  True  True False     _ = ("#101040","#100520")
+defaultWindowColors False  True  True  True     _ = ("#401040","#200520")
+
+defaultWindowColors  True False False False     _ = ("#208020","#104010")
+defaultWindowColors  True False False  True     _ = ("#808020","#404010")
+defaultWindowColors  True False  True False     _ = ("#104010","#052005")
+defaultWindowColors  True False  True  True     _ = ("#404010","#202005")
+defaultWindowColors  True  True False False     _ = ("#208080","#104040")
+defaultWindowColors  True  True False  True     _ = ("#808080","#404040")
+defaultWindowColors  True  True  True False     _ = ("#104040","#102020")
+defaultWindowColors  True  True  True  True     _ = ("#404040","#202020")
+
+
+pagerPaint ::
+  PagerConfig
+  -> RhombusConfig
+  -> Display
+  -> Drawable
+  -> GC
+  -> WorkspaceId
+  -> Rectangle
+  -> Bool
+  -> Bool
+  -> Bool
+  -> X ()
+pagerPaint pc rc d p gc t r focus match current = do
+    ss <- gets windowset
+
+    let x = rect_x r
+        y = rect_y r
+
+    urgents <- readUrgents
+    let foci = map W.focus $ catMaybes $ map W.stack $ W.workspaces ss
+
+    let color = pc_windowColors pc focus match current -- :: Bool -> (String, String)
+        (_, _, _fg_color) = pc_workspaceColors pc focus match current
+
+    fg_color <- stringToPixel d _fg_color
+
+    let r = screenRect $ W.screenDetail $ W.current ss
+    let a = fi (rect_width r) / fi (rect_height r)
+    let scale = fi (rc_cellwidth rc) / fi (rect_width r)
+
+    -- TODO whenNothing print error
+    whenJust (findWorkspace t ss) $ \ ws -> do
+        whenJust (W.stack ws) $ \ s ->
+            withDisplay $ \ d -> io $ do
+
+                let color' w = color (w `elem` urgents) (w `elem` foci)
+
+                -- TODO painting of floating windows is broken
+                mapM_ (drawMiniWindow d p gc x y color' scale) (W.down s)
+                drawMiniWindow d p gc x y color' scale (W.focus s)
+                mapM_ (drawMiniWindow d p gc x y color' scale) (W.up s)
+
+drawMiniWindow
+    :: RealFrac a
+    => Display
+    -> Drawable
+    -> GC
+    -> Position
+    -> Position
+    -> (Window -> (String, String))
+    -> a
+    -> Window
+    -> IO ()
+drawMiniWindow d p gc ox oy color s win = do
+    let scale x = round $ fi x * s
+
+    wa <- getWindowAttributes d win
+
+    let x = ox + (scale $ wa_x wa)
+        y = oy + (scale $ wa_y wa)
+        w = (scale $ wa_width wa)
+        h = (scale $ wa_height wa)
+
+    let (fg, bg) = color win
+
+    fg' <- stringToPixel d fg
+    bg' <- stringToPixel d bg
+
+    setForeground d gc bg'
+    fillRectangle d p gc (x + 1) (y + 1) (w - 2) (h - 2)
+
+    setForeground d gc fg'
+    drawLines d p gc
+        [ Point x y
+        , Point (fi w - 1) 0
+        , Point 0 (fi h - 2)
+        , Point (- fi w + 1) 0
+        , Point 0 (- fi h + 2)
+        ]
+        coordModePrevious
+
+
+
+-- TODO externalize findWorkspace
+findWorkspace :: (Eq i) => i -> W.StackSet i l a sid sd -> Maybe (W.Workspace i l a)
+findWorkspace t ss = find ((==)t . W.tag) (W.workspaces ss)
diff --git a/XMonad/Stockholm/Rhombus.hs b/XMonad/Stockholm/Rhombus.hs
new file mode 100644
index 0000000..93ecf07
--- /dev/null
+++ b/XMonad/Stockholm/Rhombus.hs
@@ -0,0 +1,369 @@
+module XMonad.Stockholm.Rhombus
+    ( defaultRhombusConfig
+    , MatchMethod(..)
+    , rhombus
+    , RhombusConfig(..)
+    , RhombusState(..)
+    ) where
+
+import Control.Monad (forM_, zipWithM_)
+import Data.Char
+import Data.List
+import Data.Ord
+import Data.Map (fromList)
+import Data.Maybe (isJust, fromJust)
+import XMonad
+import XMonad.StackSet hiding (filter)
+import XMonad.Util.Font
+import XMonad.Util.Image (drawIcon)
+import XMonad.Util.XUtils
+
+import XMonad.Stockholm.Submap
+import XMonad.Stockholm.XUtils
+import XMonad.Stockholm.Font
+
+
+data MatchMethod = MatchInfix | MatchPrefix
+
+data RhombusConfig = RhombusConfig
+    { rc_font           :: String
+    , rc_cellwidth      :: Dimension
+    , rc_margin         :: Dimension
+    , rc_matchmethod    :: MatchMethod
+    , rc_wrap           :: Bool
+    , rc_colors         :: Bool -> Bool -> Bool -> (String, String, String)
+    , rc_paint          :: RhombusConfig -> Display -> Pixmap -> GC -> String -> Rectangle -> Bool -> Bool -> Bool -> X ()
+    }
+
+
+-- TODO currently xft is broken
+defaultRhombusConfig = RhombusConfig "xft:Sans-8" 100 0 MatchInfix True stupidColors noPaint
+    where
+    stupidColors _ _ _ = ("red", "magenta", "yellow")
+    noPaint _ _ _ _ _ _ _ _ _ = return ()
+
+
+data RhombusState = RhombusState
+    { rs_window     :: Window
+    , rs_search     :: String
+    , rs_font       :: XMonadFont
+    , rs_focus      :: (Position, Position)
+    , rs_strings    :: [String]
+    }
+
+
+reachableCoords :: RhombusState -> [(Position, Position)]
+reachableCoords RhombusState{rs_strings=xs} = take (length xs) wave
+
+
+matchingReachableCoords :: RhombusConfig -> RhombusState -> [(Position, Position)]
+matchingReachableCoords rc rs =
+    snd $ unzip
+        $ filter (isXOf (rc_matchmethod rc) (rs_search rs) . fst)
+        $ zip (rs_strings rs) (reachableCoords rs)
+
+
+match :: MatchMethod -> String -> [String] -> Maybe String
+match m s ws = do
+    let cands = filter (isXOf m s) ws
+    if length cands == 1
+        then Just $ head cands
+        else Nothing
+
+rhombus :: RhombusConfig -> (String -> X ()) -> [String] -> X ()
+rhombus rc viewFunc as = withGrabbedKeyboard $ do
+    rs <- newRhombus rc as
+    --redraw rc rs
+    showWindow (rs_window rs)
+    rhombusMode viewFunc rc rs
+
+
+rhombusMode :: (String -> X ()) -> RhombusConfig -> RhombusState -> X ()
+rhombusMode viewFunc rc rs =
+    case match (rc_matchmethod rc) (rs_search rs) (init $ rs_strings rs) of
+        Nothing -> redraw rc rs >> submapString def keys
+        Just i -> removeRhombus rs >> viewFunc i
+    where
+    def (ch:[]) | isPrint ch =
+        incSearchPushChar ch rs >>= rhombusMode viewFunc rc
+
+    def _ =
+        failbeep >> rhombusMode viewFunc rc rs
+
+    keys = fromList $
+        [ ((0   , xK_BackSpace  ), incSearchPopChar rs >>= rhombusMode viewFunc rc)
+        , ((0   , xK_Escape     ), removeRhombus rs)
+        , ((0   , xK_Menu       ), removeRhombus rs)
+        , ((0   , xK_Left       ), goto rc (-1, 0) rs >>= rhombusMode viewFunc rc)
+        , ((0   , xK_Right      ), goto rc ( 1, 0) rs >>= rhombusMode viewFunc rc)
+        , ((0   , xK_Up         ), goto rc ( 0,-1) rs >>= rhombusMode viewFunc rc)
+        , ((0   , xK_Down       ), goto rc ( 0, 1) rs >>= rhombusMode viewFunc rc)
+        , ((0   , xK_Tab        ), gotoNextMatch rc rs >>= rhombusMode viewFunc rc)
+        , ((_S  , xK_Tab        ), gotoPrevMatch rc rs >>= rhombusMode viewFunc rc)
+        , ((0   , xK_Return     ), removeRhombus rs >> return (selectFocused rs) >>= viewFunc)
+        ]
+
+    _S = shiftMask
+
+
+-- TODO make failbeep configurable
+failbeep = spawn "beep -l 100 -f 500"
+
+
+goto :: RhombusConfig -> (Position, Position) -> RhombusState -> X RhombusState
+goto RhombusConfig{rc_wrap=True}  xy rs = maybe (failbeep >> return rs) return $ wrapFocus xy rs
+goto RhombusConfig{rc_wrap=False} xy rs = maybe (failbeep >> return rs) return $ moveFocus xy rs
+
+
+moveFocus :: (Position, Position) -> RhombusState -> Maybe RhombusState
+moveFocus (dx, dy) rs@RhombusState{rs_focus=(x,y)} = do
+    let focus' = (x + dx, y + dy)
+    if elem focus' (reachableCoords rs)
+        then Just rs { rs_focus = focus' }
+        else Nothing
+
+
+wrapFocus :: (Position, Position) -> RhombusState -> Maybe RhombusState
+
+wrapFocus (0, dy) rs@RhombusState{rs_focus=focus} = do
+    let column = sortBy (comparing snd) $ filter ((==) (fst focus) . fst) (reachableCoords rs)
+    i <- elemIndex focus column
+    return rs { rs_focus = column `modIndex` (i + fromIntegral dy) }
+
+wrapFocus (dx, 0) rs@RhombusState{rs_focus=focus} = do
+    let column = sortBy (comparing fst) $ filter ((==) (snd focus) . snd) (reachableCoords rs)
+    i <- elemIndex focus column
+    return rs { rs_focus = column `modIndex` (i + fromIntegral dx) }
+
+wrapFocus _ _ = Nothing
+
+
+gotoPrevMatch :: RhombusConfig -> RhombusState -> X RhombusState
+gotoPrevMatch rc rs@RhombusState{rs_focus=focus} = do
+    case reverse (matchingReachableCoords rc rs) of
+        [] -> failbeep >> return rs
+        xs -> return rs
+            { rs_focus = maybe (head xs)
+                               (modIndex xs . (+1))
+                               (focus `elemIndex` xs)
+            }
+
+
+gotoNextMatch :: RhombusConfig -> RhombusState -> X RhombusState
+gotoNextMatch rc rs@RhombusState{rs_focus=focus} = do
+    case matchingReachableCoords rc rs of
+        [] -> failbeep >> return rs
+        xs -> return rs
+            { rs_focus = maybe (head xs)
+                               (modIndex xs . (+1))
+                               (focus `elemIndex` xs)
+            }
+
+
+selectFocused :: RhombusState -> String
+selectFocused rs =
+    -- TODO the rhombus must never "focus" something inexistent
+    fromJust $ lookup (rs_focus rs) $ zip wave (rs_strings rs)
+
+
+incSearchPushChar :: Char -> RhombusState -> X RhombusState
+incSearchPushChar c rs = return rs { rs_search = rs_search rs ++ [c] }
+
+
+incSearchPopChar :: RhombusState -> X RhombusState
+
+-- only rubout if we have at least one char
+incSearchPopChar rs@RhombusState{rs_search=xs@(_:_)} =
+    return rs { rs_search = init xs }
+
+incSearchPopChar rs = return rs
+
+
+redraw :: RhombusConfig -> RhombusState -> X ()
+redraw rc rs = do
+    ss <- gets windowset
+
+    let Screen _ _ (SD (Rectangle _ _ s_width s_height)) = current ss
+
+    -- TODO this let is duplicated in newRhombus
+    let scale x = x * cell_w `div` s_width -- TODO use bw
+        cell_w  = rc_cellwidth rc
+        cell_h  = scale s_height
+
+        -- txy is the top-left corner of the first (center) cell
+        -- XXX div and (-) are not distributive
+        --     we could round $ (s_* - cell_*) / 2, though...
+        tx = fi $ s_width  `div` 2 - cell_w `div` 2
+        ty = fi $ s_height `div` 2 - cell_h `div` 2
+
+        margin = rc_margin rc
+
+        -- dxy are the outer cell dimensions (i.e. including the border)
+        dx = fi $ cell_w + 2 + margin
+        dy = fi $ cell_h + 2 + margin
+
+        paint = rc_paint rc
+        xmf   = rs_font rs
+        tags  = rs_strings rs
+        --currentTag = last tags
+
+    withDisplay $ \ d -> do
+        -- XXX we cannot use withPixmapAndGC because rc_paint is an X monad
+        p <- io $ createPixmap d (rs_window rs) s_width s_height (defaultDepthOfScreen $ defaultScreenOfDisplay d)
+        g <- io $ createGC d p
+
+        -- TODO fixme
+        color_black <- stringToPixel d "black"
+
+        forZipWithM_ tags (reachableCoords rs) $ \ tag oxy@(ox, oy) -> do
+
+            let focus   = oxy == rs_focus rs
+                match   = isXOf (rc_matchmethod rc) (rs_search rs) tag
+                current = tag == last tags
+                (_b_color, _bg_color, _fg_color) = rc_colors rc focus match current
+                --cell_x = (ox * dx) + x - fi (cell_w `div` 2)
+                --cell_y = (oy * dy) + y - fi (cell_h `div` 2)
+                cell_x = (ox * dx) + tx + 1
+                cell_y = (oy * dy) + ty + 1
+
+            b_color <- stringToPixel d _b_color
+            bg_color <- stringToPixel d _bg_color
+            fg_color <- stringToPixel d _fg_color
+
+            -- draw background
+            io $ setForeground d g bg_color
+            io $ fillRectangle d p g cell_x cell_y cell_w cell_h
+
+            -- draw border
+            io $ setForeground d g b_color
+            io $ drawLines d p g
+                    [ Point (cell_x - 1) (cell_y - 1)
+                    , Point (fi cell_w + 1) 0
+                    , Point 0 (fi cell_h + 1)
+                    , Point (-(fi cell_w + 1)) 0
+                    , Point 0 (-(fi cell_h + 1))
+                    ]
+                    coordModePrevious
+
+            -- custom draw
+            paint rc d p g tag (Rectangle cell_x cell_y cell_w cell_h) focus match current
+
+            -- paint text
+            -- TODO custom paint text?
+            -- TODO withCopyArea
+            io $ withPixmapAndGC d p s_width s_height (defaultDepthOfScreen $ defaultScreenOfDisplay d) $ \ f_pm f_gc -> do
+                withPixmapAndGC d f_pm s_width s_height 1 $ \ clip_mask clip_gc -> do
+                    setForeground d clip_gc 0
+                    setBackground d clip_gc 0
+                    fillRectangle d clip_mask clip_gc 0 0 s_width s_height
+                    setForeground d clip_gc 1
+
+                    let r = Rectangle cell_x cell_y cell_w cell_h
+
+                    printStringCentered d clip_mask xmf clip_gc r tag
+
+                    setForeground d f_gc fg_color
+                    setBackground d f_gc color_black -- TODO
+
+                    printStringCentered d f_pm xmf f_gc r tag
+
+                    setClipMask d f_gc clip_mask
+
+                    copyArea d f_pm p f_gc 0 0 s_width s_height 0 0
+
+        io $ copyArea d p (rs_window rs) g 0 0 s_width s_height 0 0
+        io $ freePixmap d p
+        io $ freeGC d g
+
+
+newRhombus :: RhombusConfig -> [String] -> X RhombusState
+newRhombus rc tags = do
+    ss <- gets windowset
+
+    let Screen _ _ (SD (Rectangle _ _ s_width s_height)) = current ss
+        (_, def_win_bg, _) = rc_colors rc False True False
+
+    -- TODO this let is duplicated in redraw
+    let scale x = x * cell_w `div` s_width -- TODO use bw
+        cell_w  = rc_cellwidth rc
+        cell_h  = scale s_height
+
+        -- TODO don't delete this let but use it instead of s_{width,height}
+        -- (xcoords, ycoords) = unzip $ take (length tags) wave -- this is reachableCoords
+        -- win_width  = (maximum xcoords - minimum xcoords) * dx
+        -- win_height = (maximum ycoords - minimum ycoords) * dy
+
+        -- txy is the top-left corner of the first (center) cell
+        -- XXX div and (-) are not distributive
+        --     we could round $ (s_* - cell_*) / 2, though...
+        tx = fi $ s_width  `div` 2 - cell_w `div` 2
+        ty = fi $ s_height `div` 2 - cell_h `div` 2
+
+        margin = rc_margin rc
+
+        -- dxy are the outer cell dimensions (i.e. including the border)
+        dx = fi $ cell_w + 2 + margin
+        dy = fi $ cell_h + 2 + margin
+
+    fn <- initXMF (rc_font rc)
+    win <- createNewWindow (Rectangle 0 0 s_width s_height) Nothing def_win_bg True
+
+    withDisplay $ \ d ->
+        io $ shapeWindow d win $ \ p g ->
+            forZipWithM_ tags wave $ \ _ (ox, oy) ->
+                fillRectangle d p g (tx + ox * dx) (ty + oy * dy) (fi cell_w + 2) (fi cell_h + 2)
+
+    return $ RhombusState win "" fn (0,0) tags
+
+
+removeRhombus :: RhombusState -> X ()
+removeRhombus (RhombusState w _ fn _ _) = do
+    deleteWindow w
+    releaseXMF fn
+
+wave :: [(Position, Position)]
+wave = zip (0:(concat $ map (\i -> [0..i]++[i-1,i-2..1] ++ [0,-1..(-i)]++[-i,-i+1..(-1)]) [1..])) (concat $ map (\i -> [0..i]++[i-1,i-2..1] ++ [0,-1..(-i)]++[-i+1,-i+2..(-1)]) [1..])
+    where
+        wave1 = 0:(concat $ map (\i -> [0..i]++[i-1,i-2..1] ++ [0,-1..(-i)]++[-i,-i+1..(-1)]) [1..])
+        wave2 = concat $ map (\i -> [0..i]++[i-1,i-2..1] ++ [0,-1..(-i)]++[-i+1,-i+2..(-1)]) [1..]
+
+commonPrefix (x:xs) (y:ys) | x == y = x:commonPrefix xs ys
+commonPrefix _ _ = []
+
+
+isXOf :: MatchMethod -> String -> String -> Bool
+isXOf MatchInfix  = isInfixOf
+isXOf MatchPrefix = isPrefixOf
+
+
+findXIndex :: (Eq a) => MatchMethod -> [a] -> [a] -> Maybe Int
+findXIndex MatchInfix  = findInfixIndex
+findXIndex MatchPrefix = findPrefixIndex
+
+
+findInfixIndex :: (Eq a) => [a] -> [a] -> Maybe Int
+findInfixIndex needle haystack
+    = (\x -> if null x then Nothing else Just (fst $ head x))
+      . dropWhile (\(_,x) -> not $ isPrefixOf needle x)
+        $ zip [0..] (tails haystack)
+
+
+findPrefixIndex :: (Eq a) => [a] -> [a] -> Maybe Int
+findPrefixIndex needle haystack =
+    if isPrefixOf needle haystack
+        then Just 0
+        else Nothing
+
+
+modIndex :: Integral i => [a] -> i -> a
+modIndex xs i = xs `genericIndex` (i `mod` genericLength xs)
+
+
+forZipWithM_ a b f = zipWithM_ f a b
+
+
+withGrabbedKeyboard f = do
+    XConf { theRoot = root, display = d } <- ask
+    catchX (io (grabKeyboard d root False grabModeAsync grabModeAsync currentTime) >> f)
+           (return ())
+    io $ ungrabKeyboard d currentTime
diff --git a/XMonad/Stockholm/Shutdown.hs b/XMonad/Stockholm/Shutdown.hs
new file mode 100644
index 0000000..164ddd8
--- /dev/null
+++ b/XMonad/Stockholm/Shutdown.hs
@@ -0,0 +1,54 @@
+{-# LANGUAGE LambdaCase #-}
+
+module XMonad.Stockholm.Shutdown
+    ( sendShutdownEvent
+    , handleShutdownEvent
+    , shutdown
+    )
+  where
+
+import qualified Data.Map as Map
+import qualified XMonad.StackSet as W
+import Control.Monad
+import Data.Maybe (catMaybes)
+import Data.Monoid
+import System.Environment (getEnv)
+import System.Exit (exitSuccess)
+import XMonad
+
+sendShutdownEvent :: IO ()
+sendShutdownEvent = do
+    dpy <- openDisplay ""
+    rw <- rootWindow dpy $ defaultScreen dpy
+    a <- internAtom dpy "XMONAD_SHUTDOWN" False
+    allocaXEvent $ \e -> do
+        setEventType e clientMessage
+        setClientMessageEvent e rw a 32 0 currentTime
+        sendEvent dpy rw False structureNotifyMask e
+    sync dpy False
+
+handleShutdownEvent :: Event -> X All
+handleShutdownEvent = \case
+  ClientMessageEvent { ev_message_type = mt } -> do
+    c <- (mt ==) <$> getAtom "XMONAD_SHUTDOWN"
+    when c shutdown
+    return (All c)
+  _ ->
+    return (All True)
+
+shutdown :: X ()
+shutdown = do
+  broadcastMessage ReleaseResources
+  io . flush =<< asks display
+  let wsData = show . W.mapLayout show . windowset
+      maybeShow (t, Right (PersistentExtension ext)) = Just (t, show ext)
+      maybeShow (t, Left str) = Just (t, str)
+      maybeShow _ = Nothing
+      extState =
+        return . show . catMaybes . map maybeShow . Map.toList . extensibleState
+  s <- gets (\s -> (wsData s : extState s))
+  _ <- io $ do
+    path <- getEnv "XMONAD_STATE"
+    writeFile path (unlines s)
+    exitSuccess
+  return ()
diff --git a/XMonad/Stockholm/Submap.hs b/XMonad/Stockholm/Submap.hs
new file mode 100644
index 0000000..8648e6c
--- /dev/null
+++ b/XMonad/Stockholm/Submap.hs
@@ -0,0 +1,31 @@
+-- This module is based on Jason Creighton's XMonad.Actions.Submap
+
+module XMonad.Stockholm.Submap
+    ( submapString
+    ) where
+
+import qualified Data.Map as M
+import Control.Monad.Fix (fix)
+import Data.Bits
+import XMonad hiding (keys)
+
+
+-- | Like 'XMonad.Actions.Submap.submapDefault', but provides the looked up string to the default action.
+submapString :: (String -> X ()) -> M.Map (KeyMask, KeySym) (X ()) -> X ()
+submapString def keys = do
+    XConf { theRoot = root, display = d } <- ask
+
+    (m, s, str) <- io $ allocaXEvent $ \p -> fix $ \nextkey -> do
+        maskEvent d keyPressMask p
+        KeyEvent { ev_keycode = code, ev_state = m } <- getEvent p
+        keysym <- keycodeToKeysym d code 0
+        if isModifierKey keysym
+            then nextkey
+            else do
+                (mbKeysym, str) <- lookupString (asKeyEvent p)
+                return (m, keysym, str)
+
+    -- Remove num lock mask and Xkb group state bits
+    m' <- cleanMask $ m .&. ((1 `shiftL` 12) - 1)
+
+    maybe (def str) id (M.lookup (m', s) keys)
diff --git a/XMonad/Stockholm/XUtils.hs b/XMonad/Stockholm/XUtils.hs
new file mode 100644
index 0000000..5b477b8
--- /dev/null
+++ b/XMonad/Stockholm/XUtils.hs
@@ -0,0 +1,47 @@
+module XMonad.Stockholm.XUtils
+    ( shapeWindow
+    , withGC
+    , withPixmap
+    , withPixmapAndGC
+    ) where
+
+import Control.Exception ( bracket )
+import Foreign.C.Types ( CInt )
+import Graphics.X11.Xlib
+import Graphics.X11.Xlib.Extras
+import Graphics.X11.Xshape
+
+
+shapeWindow :: Display -> Window -> (Pixmap -> GC -> IO ()) -> IO ()
+shapeWindow d w f = do
+    wa <- getWindowAttributes d w
+
+    let width = fromIntegral $ wa_width wa
+        height = fromIntegral $ wa_height wa
+
+    withPixmapAndGC d w width height 1 $ \ p g -> do
+
+        setForeground d g 0
+        fillRectangle d p g 0 0 width height
+
+        setForeground d g 1
+
+        f p g
+
+        xshapeCombineMask d w shapeBounding 0 0 p shapeSet
+
+
+withGC :: Display -> Drawable -> (GC -> IO ()) -> IO ()
+withGC d p =
+    bracket (createGC d p) (freeGC d)
+
+
+withPixmap :: Display -> Drawable -> Dimension -> Dimension -> CInt -> (Pixmap -> IO ()) -> IO ()
+withPixmap d p w h depth =
+    bracket (createPixmap d p w h depth) (freePixmap d)
+
+
+withPixmapAndGC :: Display -> Drawable -> Dimension -> Dimension -> CInt -> (Pixmap -> GC -> IO ()) -> IO ()
+withPixmapAndGC d w width height depth f =
+    withPixmap d w width height depth $ \ p ->
+        withGC d p $ \ g -> f p g