EventFocus.hs


{- |
Copyright  : Will Thompson, Iñaki García Etxebarria and Jonas Platte
License    : LGPL-2.1
Maintainer : Iñaki García Etxebarria (garetxe@gmail.com)

Describes a change of keyboard focus.
-}

module GI.Gdk.Structs.EventFocus
    ( 

-- * Exported types
    EventFocus(..)                          ,
    newZeroEventFocus                       ,
    noEventFocus                            ,


 -- * Properties
-- ** In
    eventFocusReadIn                        ,


-- ** SendEvent
    eventFocusReadSendEvent                 ,


-- ** Type
    eventFocusReadType                      ,


-- ** Window
    eventFocusReadWindow                    ,




    ) where

import Prelude ()
import Data.GI.Base.ShortPrelude

import qualified Data.Text as T
import qualified Data.ByteString.Char8 as B
import qualified Data.Map as Map

import GI.Gdk.Types
import GI.Gdk.Callbacks

newtype EventFocus = EventFocus (ForeignPtr EventFocus)
-- | Construct a `EventFocus` struct initialized to zero.
newZeroEventFocus :: MonadIO m => m EventFocus
newZeroEventFocus = liftIO $ callocBytes 24 >>= wrapPtr EventFocus

noEventFocus :: Maybe EventFocus
noEventFocus = Nothing

eventFocusReadType :: EventFocus -> IO EventType
eventFocusReadType s = withManagedPtr s $ \ptr -> do
    val <- peek (ptr `plusPtr` 0) :: IO CUInt
    let val' = (toEnum . fromIntegral) val
    return val'

eventFocusReadWindow :: EventFocus -> IO Window
eventFocusReadWindow s = withManagedPtr s $ \ptr -> do
    val <- peek (ptr `plusPtr` 8) :: IO (Ptr Window)
    val' <- (newObject Window) val
    return val'

eventFocusReadSendEvent :: EventFocus -> IO Int8
eventFocusReadSendEvent s = withManagedPtr s $ \ptr -> do
    val <- peek (ptr `plusPtr` 16) :: IO Int8
    return val

eventFocusReadIn :: EventFocus -> IO Int16
eventFocusReadIn s = withManagedPtr s $ \ptr -> do
    val <- peek (ptr `plusPtr` 18) :: IO Int16
    return val

type family ResolveEventFocusMethod (t :: Symbol) (o :: *) :: * where
    ResolveEventFocusMethod l o = MethodResolutionFailed l o

instance (info ~ ResolveEventFocusMethod t EventFocus, MethodInfo info EventFocus p) => IsLabelProxy t (EventFocus -> p) where
    fromLabelProxy _ = overloadedMethod (MethodProxy :: MethodProxy info)

#if MIN_VERSION_base(4,9,0)
instance (info ~ ResolveEventFocusMethod t EventFocus, MethodInfo info EventFocus p) => IsLabel t (EventFocus -> p) where
    fromLabel _ = overloadedMethod (MethodProxy :: MethodProxy info)
#endif