From 232a6d435a36f99b72e49bfb8d58f37a0377841b Mon Sep 17 00:00:00 2001
From: jao <jao@gnu.org>
Date: Sun, 24 Jul 2022 17:14:52 +0100
Subject: documentation: interfacing-with-window-managers.org gone

---
 doc/quick-start.org | 66 +++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 64 insertions(+), 2 deletions(-)

(limited to 'doc/quick-start.org')

diff --git a/doc/quick-start.org b/doc/quick-start.org
index 2557295..5ae9d1a 100644
--- a/doc/quick-start.org
+++ b/doc/quick-start.org
@@ -469,5 +469,67 @@ available [[https://codeberg.org/xmobar/xmobar/src/branch/master/examples/xmobar
   before the command takes effect, while =SetAlpha= takes a new alpha
   value (also an integer, between 0 and 255) as argument.
 
-  See [[./window-managers.org::*Example of using][Interfacing with window managers]] for an example of how to use
-  the DBus interface from xmonad.
+** Example: using the DBus IPC interface with XMonad
+
+   Bind the key which should {,un}map xmobar to a dummy value. This is
+   necessary for {,un}grabKey in xmonad.
+
+   #+begin_src haskell
+     ((0, xK_Alt_L), pure ())
+   #+end_src
+
+   Also, install =avoidStruts= layout modifier from =XMonad.Hooks.ManageDocks=
+
+   Finally, install these two event hooks (=handleEventHook= in =XConfig=)
+   =myDocksEventHook= is a replacement for =docksEventHook= which reacts on unmap
+   events as well (which =docksEventHook= doesn't).
+
+   #+begin_src haskell
+     import qualified XMonad.Util.ExtensibleState as XS
+
+     data DockToggleTime = DTT { lastTime :: Time } deriving (Eq, Show, Typeable)
+
+     instance ExtensionClass DockToggleTime where
+         initialValue = DTT 0
+
+     toggleDocksHook :: Int -> KeySym -> Event -> X All
+     toggleDocksHook to ks ( KeyEvent { ev_event_display = d
+                                      , ev_event_type    = et
+                                      , ev_keycode       = ekc
+                                      , ev_time          = etime
+                                      } ) =
+             io (keysymToKeycode d ks) >>= toggleDocks >> return (All True)
+         where
+         toggleDocks kc
+             | ekc == kc && et == keyPress = do
+                 safeSendSignal ["Reveal 0", "TogglePersistent"]
+                 XS.put ( DTT etime )
+             | ekc == kc && et == keyRelease = do
+                 gap <- XS.gets ( (-) etime . lastTime )
+                 safeSendSignal [ "TogglePersistent"
+                             , "Hide " ++ show (if gap < 400 then to else 0)
+                             ]
+             | otherwise = return ()
+
+         safeSendSignal s = catchX (io $ sendSignal s) (return ())
+         sendSignal    = withSession . callSignal
+         withSession mc = connectSession >>= \c -> callNoReply c mc >> disconnect c
+         callSignal :: [String] -> MethodCall
+         callSignal s = ( methodCall
+                         ( objectPath_    "/org/Xmobar/Control" )
+                         ( interfaceName_ "org.Xmobar.Control"  )
+                         ( memberName_    "SendSignal"          )
+                     ) { methodCallDestination = Just $ busName_ "org.Xmobar.Control"
+                         , methodCallBody        = map toVariant s
+                         }
+
+     toggleDocksHook _ _ _ = return (All True)
+
+     myDocksEventHook :: Event -> X All
+     myDocksEventHook e = do
+         when (et == mapNotify || et == unmapNotify) $
+             whenX ((not `fmap` (isClient w)) <&&> runQuery checkDock w) refresh
+         return (All True)
+         where w  = ev_window e
+             et = ev_event_type e
+   #+end_src
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