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| -rw-r--r-- | Submap.hs | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/Submap.hs b/Submap.hs new file mode 100644 index 0000000..987ff46 --- /dev/null +++ b/Submap.hs @@ -0,0 +1,44 @@ +{- +Allows you to create a sub-mapping of keys. Example: + + , ((modMask, xK_a), submap . M.fromList $ + [ ((0, xK_n), spawn "mpc next") + , ((0, xK_p), spawn "mpc prev") + , ((0, xK_z), spawn "mpc random") + , ((0, xK_space), spawn "mpc toggle") + ]) + +So, for example, to run 'spawn "mpc next"', you would hit mod-a (to trigger the +submapping) and then 'n' to run that action. (0 means "no modifier"). You are, +of course, free to use any combination of modifiers in the submapping. However, +anyModifier will not work, because that is a special value passed to XGrabKey() +and not an actual modifier. +-} + +module XMonadContrib.Submap where + +import Control.Monad.Reader + +import XMonad +import Operations (cleanMask) +import Graphics.X11.Xlib +import Graphics.X11.Xlib.Extras +import qualified Data.Map as M + +submap :: M.Map (KeyMask, KeySym) (X ()) -> X () +submap keys = do + XConf { theRoot = root, display = d } <- ask + + io $ grabKeyboard d root False grabModeAsync grabModeAsync currentTime + + keyspec <- 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 return (cleanMask m, keysym) + + io $ ungrabKeyboard d currentTime + + whenJust (M.lookup keyspec keys) id |