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authorPatrick Chilton <chpatrick@gmail.com>2012-09-25 16:30:20 +0200
committerPatrick Chilton <chpatrick@gmail.com>2012-09-25 16:30:20 +0200
commit84fbd550987fdbcd976b65753ecc59da2707907f (patch)
tree887eae101eec64cd662f64b9673f490f245c3ff2 /src/Plugins/Locks.hs
parent89cfa682b77a70b399f94e8890dcadc839c787f3 (diff)
downloadxmobar-84fbd550987fdbcd976b65753ecc59da2707907f.tar.gz
xmobar-84fbd550987fdbcd976b65753ecc59da2707907f.tar.bz2
Added keyboard lock status command.
Diffstat (limited to 'src/Plugins/Locks.hs')
-rw-r--r--src/Plugins/Locks.hs51
1 files changed, 51 insertions, 0 deletions
diff --git a/src/Plugins/Locks.hs b/src/Plugins/Locks.hs
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+-----------------------------------------------------------------------------
+-- |
+-- Module : Plugins.Locks
+-- Copyright : (c) Patrick Chilton
+-- License : BSD-style (see LICENSE)
+--
+-- Maintainer : Patrick Chilton <chpatrick@gmail.com>
+-- Stability : unstable
+-- Portability : unportable
+--
+-- A plugin that displays the status of the lock keys.
+--
+-----------------------------------------------------------------------------
+
+module Plugins.Locks where
+
+import Graphics.X11
+import Data.List
+import Data.Bits
+import Control.Monad
+import Graphics.X11.Xlib.Extras
+import Plugins
+
+data Locks = Locks
+ deriving (Read, Show)
+
+locks :: [ ( KeySym, String )]
+locks = [ ( xK_Caps_Lock, "CAPS" )
+ , ( xK_Num_Lock, "NUM" )
+ , ( xK_Scroll_Lock, "SCROLL" )
+ ]
+
+instance Exec Locks where
+ alias Locks = "locks"
+ rate Locks = 2
+ run Locks = do
+ d <- openDisplay ""
+ root <- rootWindow d (defaultScreen d)
+
+ modMap <- getModifierMapping d
+ ( _, _, _, _, _, _, _, m ) <- queryPointer d root
+
+ ls <- filterM ( \( ks, _ ) -> do
+ kc <- keysymToKeycode d ks
+ return $ case find (elem kc . snd) modMap of
+ Nothing -> False
+ Just ( i, _ ) -> testBit m (fromIntegral i)
+ ) locks
+ closeDisplay d
+
+ return $ unwords $ map snd ls \ No newline at end of file