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Diffstat (limited to 'SetWMName.hs')
| -rw-r--r-- | SetWMName.hs | 114 |
1 files changed, 114 insertions, 0 deletions
diff --git a/SetWMName.hs b/SetWMName.hs new file mode 100644 index 0000000..f17982b --- /dev/null +++ b/SetWMName.hs @@ -0,0 +1,114 @@ +----------------------------------------------------------------------------- +-- | +-- Module : XMonadContrib.SetWMName +-- Copyright : © 2007 Ivan Tarasov <Ivan.Tarasov@gmail.com> +-- License : BSD +-- +-- Maintainer : Ivan.Tarasov@gmail.com +-- Stability : experimental +-- Portability : unportable +-- +-- Sets the WM name to a given string, so that it could be detected using +-- _NET_SUPPORTING_WM_CHECK protocol. +-- +-- May be useful for making Java GUI programs work, just set WM name to "LG3D" +-- and use Java 1.6u1 (1.6.0_01-ea-b03 works for me) or later. +-- +-- Remember that you need to call the setWMName action yourself (at least until +-- we have startup hooks). E.g., you can bind it in your Config.hs: +-- +-- ((modMask .|. controlMask .|. shiftMask, xK_z), setWMName "LG3D") -- @@ Java hack +-- +-- and press the key combination before running the Java programs (you only +-- need to do it once per XMonad execution) +-- +-- For details on the problems with running Java GUI programs in non-reparenting +-- WMs, see <http://bugs.sun.com/bugdatabase/view_bug.do?bug_id=6429775> and +-- related bugs. +-- +-- Setting WM name to "compiz" does not solve the problem, because of yet +-- another bug in AWT code (related to insets). For LG3D insets are explicitly +-- set to 0, while for other WMs the insets are "guessed" and the algorithm +-- fails miserably by guessing abolutely bogus values. +----------------------------------------------------------------------------- + +module XMonadContrib.SetWMName ( + setWMName) where + +import Control.Monad (join) +import Control.Monad.Reader (asks) +import Data.Bits ((.|.)) +import Data.Char (ord) +import Data.List (nub) +import Data.Maybe (fromJust, listToMaybe, maybeToList) +import Data.Word (Word8) + +import Foreign.Marshal.Alloc (alloca) + +import XMonad +import Graphics.X11.Xlib +import Graphics.X11.Xlib.Atom +import Graphics.X11.Xlib.Extras + +-- | sets WM name +setWMName :: String -> X () +setWMName name = do + atom_NET_SUPPORTING_WM_CHECK <- netSupportingWMCheckAtom + atom_NET_WM_NAME <- getAtom "_NET_WM_NAME" + atom_NET_SUPPORTED_ATOM <- getAtom "_NET_SUPPORTED" + atom_UTF8_STRING <- getAtom "UTF8_STRING" + + root <- asks theRoot + supportWindow <- getSupportWindow + dpy <- asks display + io $ do + -- _NET_SUPPORTING_WM_CHECK atom of root and support windows refers to the support window + mapM_ (\w -> changeProperty32 dpy w atom_NET_SUPPORTING_WM_CHECK wINDOW 0 [supportWindow]) [root, supportWindow] + -- set WM_NAME in supportWindow (now only accepts latin1 names to eliminate dependency on utf8 encoder) + changeProperty8 dpy supportWindow atom_NET_WM_NAME atom_UTF8_STRING 0 (latin1StringToWord8List name) + -- declare which _NET protocols are supported (append to the list if it exists) + supportedList <- fmap (join . maybeToList) $ getWindowProperty32 dpy atom_NET_SUPPORTED_ATOM root + changeProperty32 dpy root atom_NET_SUPPORTED_ATOM aTOM 0 (nub $ atom_NET_SUPPORTING_WM_CHECK : atom_NET_WM_NAME : supportedList) + where + netSupportingWMCheckAtom :: X Atom + netSupportingWMCheckAtom = getAtom "_NET_SUPPORTING_WM_CHECK" + + latin1StringToWord8List :: String -> [Word8] + latin1StringToWord8List str = map (fromIntegral . ord) str + + getSupportWindow :: X Window + getSupportWindow = withDisplay $ \dpy -> do + atom_NET_SUPPORTING_WM_CHECK <- netSupportingWMCheckAtom + root <- asks theRoot + supportWindow <- fmap (join . fmap listToMaybe) $ io $ getWindowProperty32 dpy atom_NET_SUPPORTING_WM_CHECK root + validateWindow supportWindow + + validateWindow :: Maybe Window -> X Window + validateWindow w = do + valid <- maybe (return False) isValidWindow w + if valid then + return $ fromJust w + else + createSupportWindow + + -- is there a better way to check the validity of the window? + isValidWindow :: Window -> X Bool + isValidWindow w = withDisplay $ \dpy -> io $ alloca $ \p -> do + status <- xGetWindowAttributes dpy w p + return (status /= 0) + + -- this code was translated from C (see OpenBox WM, screen.c) + createSupportWindow :: X Window + createSupportWindow = withDisplay $ \dpy -> do + root <- asks theRoot + let visual = defaultVisual dpy (defaultScreen dpy) -- should be CopyFromParent (=0), but the constructor is hidden in X11.XLib + window <- io $ allocaSetWindowAttributes $ \winAttrs -> do + set_override_redirect winAttrs True -- WM cannot decorate/move/close this window + set_event_mask winAttrs propertyChangeMask -- not sure if this is needed + let bogusX = -100 + bogusY = -100 + in + createWindow dpy root bogusX bogusY 1 1 0 0 inputOutput visual (cWEventMask .|. cWOverrideRedirect) winAttrs + io $ mapWindow dpy window -- not sure if this is needed + io $ lowerWindow dpy window -- not sure if this is needed + return window |