EventProximity.hs


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

Proximity events are generated when using GDK’s wrapper for the
XInput extension. The XInput extension is an add-on for standard X
that allows you to use nonstandard devices such as graphics tablets.
A proximity event indicates that the stylus has moved in or out of
contact with the tablet, or perhaps that the user’s finger has moved
in or out of contact with a touch screen.

This event type will be used pretty rarely. It only is important for
XInput aware programs that are drawing their own cursor.
-}

module GI.Gdk.Structs.EventProximity
    ( 

-- * Exported types
    EventProximity(..)                      ,
    newZeroEventProximity                   ,
    noEventProximity                        ,


 -- * Properties
-- ** Device
    eventProximityReadDevice                ,


-- ** SendEvent
    eventProximityReadSendEvent             ,


-- ** Time
    eventProximityReadTime                  ,


-- ** Type
    eventProximityReadType                  ,


-- ** Window
    eventProximityReadWindow                ,




    ) 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 EventProximity = EventProximity (ForeignPtr EventProximity)
-- | Construct a `EventProximity` struct initialized to zero.
newZeroEventProximity :: MonadIO m => m EventProximity
newZeroEventProximity = liftIO $ callocBytes 32 >>= wrapPtr EventProximity

noEventProximity :: Maybe EventProximity
noEventProximity = Nothing

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

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

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

eventProximityReadTime :: EventProximity -> IO Word32
eventProximityReadTime s = withManagedPtr s $ \ptr -> do
    val <- peek (ptr `plusPtr` 20) :: IO Word32
    return val

eventProximityReadDevice :: EventProximity -> IO Device
eventProximityReadDevice s = withManagedPtr s $ \ptr -> do
    val <- peek (ptr `plusPtr` 24) :: IO (Ptr Device)
    val' <- (newObject Device) val
    return val'

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

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

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