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-----------------------------------------------------------------------
--- |
--- Module : EventF
--- Maintainer : AR
--- Stability : (stable)
--- Portability : (portable)
---
--- > CVS $Date: 2005/04/21 16:22:16 $
--- > CVS $Author: bringert $
--- > CVS $Revision: 1.4 $
---
--- (Description of the module)
------------------------------------------------------------------------------
-
-module GF.Fudgets.EventF where
-import AllFudgets
-
--- | The first string is the name of the key (e.g., "Down" for the down arrow key)
---
--- The modifiers list shift, control and alt keys that were active while the
--- key was pressed.
---
--- The last string is the text produced by the key (for keys that produce
--- printable characters, empty for control keys).
-type KeyPress = ((String,[Modifiers]),String)
-
-keyboardF :: F i o -> F i (Either KeyPress o)
-keyboardF fud = idRightSP (concatMapSP post) >^^=< oeventF mask fud
- where
- post (KeyEvent {type'=Pressed,keySym=sym,state=mods,keyLookup=s}) =
- [((sym,mods),s)]
- post _ = []
-
- mask = [KeyPressMask,
- EnterWindowMask, LeaveWindowMask -- because of CTT implementation
- ]
-
--- | Output events:
-oeventF em fud = eventF em (idLeftF fud)
-
--- | Feed events to argument fudget:
-eventF eventmask = serCompLeftToRightF . groupF startcmds eventK
- where
- startcmds = [XCmd $ ChangeWindowAttributes [CWEventMask eventmask],
- XCmd $ ConfigureWindow [CWBorderWidth 0]]
- eventK = K $ mapFilterSP route
- where route = message low high
- low (XEvt event) = Just (High (Left event))
- low _ = Nothing
- high h = Just (High (Right h))
-