{- |
Copyright  : Will Thompson, Iñaki García Etxebarria and Jonas Platte
License    : LGPL-2.1
Maintainer : Iñaki García Etxebarria (inaki@blueleaf.cc)

Opaque datatype that records a start time.
-}

#define ENABLE_OVERLOADING (MIN_VERSION_haskell_gi_overloading(1,0,0) \
       && !defined(__HADDOCK_VERSION__))

module GI.GLib.Structs.Timer
    ( 

-- * Exported types
    Timer(..)                               ,
    noTimer                                 ,


 -- * Methods
-- ** continue #method:continue#

#if ENABLE_OVERLOADING
    TimerContinueMethodInfo                 ,
#endif
    timerContinue                           ,


-- ** destroy #method:destroy#

#if ENABLE_OVERLOADING
    TimerDestroyMethodInfo                  ,
#endif
    timerDestroy                            ,


-- ** elapsed #method:elapsed#

#if ENABLE_OVERLOADING
    TimerElapsedMethodInfo                  ,
#endif
    timerElapsed                            ,


-- ** reset #method:reset#

#if ENABLE_OVERLOADING
    TimerResetMethodInfo                    ,
#endif
    timerReset                              ,


-- ** start #method:start#

#if ENABLE_OVERLOADING
    TimerStartMethodInfo                    ,
#endif
    timerStart                              ,


-- ** stop #method:stop#

#if ENABLE_OVERLOADING
    TimerStopMethodInfo                     ,
#endif
    timerStop                               ,




    ) where

import Data.GI.Base.ShortPrelude
import qualified Data.GI.Base.ShortPrelude as SP
import qualified Data.GI.Base.Overloading as O
import qualified Prelude as P

import qualified Data.GI.Base.Attributes as GI.Attributes
import qualified Data.GI.Base.ManagedPtr as B.ManagedPtr
import qualified Data.GI.Base.GClosure as B.GClosure
import qualified Data.GI.Base.GError as B.GError
import qualified Data.GI.Base.GVariant as B.GVariant
import qualified Data.GI.Base.GValue as B.GValue
import qualified Data.GI.Base.GParamSpec as B.GParamSpec
import qualified Data.GI.Base.CallStack as B.CallStack
import qualified Data.GI.Base.Properties as B.Properties
import qualified Data.Text as T
import qualified Data.ByteString.Char8 as B
import qualified Data.Map as Map
import qualified Foreign.Ptr as FP
import qualified GHC.OverloadedLabels as OL


-- | Memory-managed wrapper type.
newtype Timer = Timer (ManagedPtr Timer)
-- XXX Wrapping a foreign struct/union with no known destructor or size, leak?
instance WrappedPtr Timer where
    wrappedPtrCalloc = return nullPtr
    wrappedPtrCopy = return
    wrappedPtrFree = Nothing

-- | A convenience alias for `Nothing` :: `Maybe` `Timer`.
noTimer :: Maybe Timer
noTimer = Nothing


#if ENABLE_OVERLOADING
instance O.HasAttributeList Timer
type instance O.AttributeList Timer = TimerAttributeList
type TimerAttributeList = ('[ ] :: [(Symbol, *)])
#endif

-- method Timer::continue
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "timer", argType = TInterface (Name {namespace = "GLib", name = "Timer"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GTimer.", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Nothing
-- throws : False
-- Skip return : False

foreign import ccall "g_timer_continue" g_timer_continue :: 
    Ptr Timer ->                            -- timer : TInterface (Name {namespace = "GLib", name = "Timer"})
    IO ()

{- |
Resumes a timer that has previously been stopped with
'GI.GLib.Structs.Timer.timerStop'. 'GI.GLib.Structs.Timer.timerStop' must be called before using this
function.

/Since: 2.4/
-}
timerContinue ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    Timer
    {- ^ /@timer@/: a 'GI.GLib.Structs.Timer.Timer'. -}
    -> m ()
timerContinue timer = liftIO $ do
    timer' <- unsafeManagedPtrGetPtr timer
    g_timer_continue timer'
    touchManagedPtr timer
    return ()

#if ENABLE_OVERLOADING
data TimerContinueMethodInfo
instance (signature ~ (m ()), MonadIO m) => O.MethodInfo TimerContinueMethodInfo Timer signature where
    overloadedMethod _ = timerContinue

#endif

-- method Timer::destroy
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "timer", argType = TInterface (Name {namespace = "GLib", name = "Timer"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GTimer to destroy.", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Nothing
-- throws : False
-- Skip return : False

foreign import ccall "g_timer_destroy" g_timer_destroy :: 
    Ptr Timer ->                            -- timer : TInterface (Name {namespace = "GLib", name = "Timer"})
    IO ()

{- |
Destroys a timer, freeing associated resources.
-}
timerDestroy ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    Timer
    {- ^ /@timer@/: a 'GI.GLib.Structs.Timer.Timer' to destroy. -}
    -> m ()
timerDestroy timer = liftIO $ do
    timer' <- unsafeManagedPtrGetPtr timer
    g_timer_destroy timer'
    touchManagedPtr timer
    return ()

#if ENABLE_OVERLOADING
data TimerDestroyMethodInfo
instance (signature ~ (m ()), MonadIO m) => O.MethodInfo TimerDestroyMethodInfo Timer signature where
    overloadedMethod _ = timerDestroy

#endif

-- method Timer::elapsed
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "timer", argType = TInterface (Name {namespace = "GLib", name = "Timer"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GTimer.", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing},Arg {argCName = "microseconds", argType = TBasicType TULong, direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "return location for the fractional part of seconds\n               elapsed, in microseconds (that is, the total number\n               of microseconds elapsed, modulo 1000000), or %NULL", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Just (TBasicType TDouble)
-- throws : False
-- Skip return : False

foreign import ccall "g_timer_elapsed" g_timer_elapsed :: 
    Ptr Timer ->                            -- timer : TInterface (Name {namespace = "GLib", name = "Timer"})
    CULong ->                               -- microseconds : TBasicType TULong
    IO CDouble

{- |
If /@timer@/ has been started but not stopped, obtains the time since
the timer was started. If /@timer@/ has been stopped, obtains the
elapsed time between the time it was started and the time it was
stopped. The return value is the number of seconds elapsed,
including any fractional part. The /@microseconds@/ out parameter is
essentially useless.
-}
timerElapsed ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    Timer
    {- ^ /@timer@/: a 'GI.GLib.Structs.Timer.Timer'. -}
    -> CULong
    {- ^ /@microseconds@/: return location for the fractional part of seconds
               elapsed, in microseconds (that is, the total number
               of microseconds elapsed, modulo 1000000), or 'Nothing' -}
    -> m Double
    {- ^ __Returns:__ seconds elapsed as a floating point value, including any
         fractional part. -}
timerElapsed timer microseconds = liftIO $ do
    timer' <- unsafeManagedPtrGetPtr timer
    result <- g_timer_elapsed timer' microseconds
    let result' = realToFrac result
    touchManagedPtr timer
    return result'

#if ENABLE_OVERLOADING
data TimerElapsedMethodInfo
instance (signature ~ (CULong -> m Double), MonadIO m) => O.MethodInfo TimerElapsedMethodInfo Timer signature where
    overloadedMethod _ = timerElapsed

#endif

-- method Timer::reset
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "timer", argType = TInterface (Name {namespace = "GLib", name = "Timer"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GTimer.", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Nothing
-- throws : False
-- Skip return : False

foreign import ccall "g_timer_reset" g_timer_reset :: 
    Ptr Timer ->                            -- timer : TInterface (Name {namespace = "GLib", name = "Timer"})
    IO ()

{- |
This function is useless; it\'s fine to call 'GI.GLib.Structs.Timer.timerStart' on an
already-started timer to reset the start time, so 'GI.GLib.Structs.Timer.timerReset'
serves no purpose.
-}
timerReset ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    Timer
    {- ^ /@timer@/: a 'GI.GLib.Structs.Timer.Timer'. -}
    -> m ()
timerReset timer = liftIO $ do
    timer' <- unsafeManagedPtrGetPtr timer
    g_timer_reset timer'
    touchManagedPtr timer
    return ()

#if ENABLE_OVERLOADING
data TimerResetMethodInfo
instance (signature ~ (m ()), MonadIO m) => O.MethodInfo TimerResetMethodInfo Timer signature where
    overloadedMethod _ = timerReset

#endif

-- method Timer::start
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "timer", argType = TInterface (Name {namespace = "GLib", name = "Timer"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GTimer.", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Nothing
-- throws : False
-- Skip return : False

foreign import ccall "g_timer_start" g_timer_start :: 
    Ptr Timer ->                            -- timer : TInterface (Name {namespace = "GLib", name = "Timer"})
    IO ()

{- |
Marks a start time, so that future calls to 'GI.GLib.Structs.Timer.timerElapsed' will
report the time since 'GI.GLib.Structs.Timer.timerStart' was called. @/g_timer_new()/@
automatically marks the start time, so no need to call
'GI.GLib.Structs.Timer.timerStart' immediately after creating the timer.
-}
timerStart ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    Timer
    {- ^ /@timer@/: a 'GI.GLib.Structs.Timer.Timer'. -}
    -> m ()
timerStart timer = liftIO $ do
    timer' <- unsafeManagedPtrGetPtr timer
    g_timer_start timer'
    touchManagedPtr timer
    return ()

#if ENABLE_OVERLOADING
data TimerStartMethodInfo
instance (signature ~ (m ()), MonadIO m) => O.MethodInfo TimerStartMethodInfo Timer signature where
    overloadedMethod _ = timerStart

#endif

-- method Timer::stop
-- method type : OrdinaryMethod
-- Args : [Arg {argCName = "timer", argType = TInterface (Name {namespace = "GLib", name = "Timer"}), direction = DirectionIn, mayBeNull = False, argDoc = Documentation {rawDocText = Just "a #GTimer.", sinceVersion = Nothing}, argScope = ScopeTypeInvalid, argClosure = -1, argDestroy = -1, argCallerAllocates = False, transfer = TransferNothing}]
-- Lengths : []
-- returnType : Nothing
-- throws : False
-- Skip return : False

foreign import ccall "g_timer_stop" g_timer_stop :: 
    Ptr Timer ->                            -- timer : TInterface (Name {namespace = "GLib", name = "Timer"})
    IO ()

{- |
Marks an end time, so calls to 'GI.GLib.Structs.Timer.timerElapsed' will return the
difference between this end time and the start time.
-}
timerStop ::
    (B.CallStack.HasCallStack, MonadIO m) =>
    Timer
    {- ^ /@timer@/: a 'GI.GLib.Structs.Timer.Timer'. -}
    -> m ()
timerStop timer = liftIO $ do
    timer' <- unsafeManagedPtrGetPtr timer
    g_timer_stop timer'
    touchManagedPtr timer
    return ()

#if ENABLE_OVERLOADING
data TimerStopMethodInfo
instance (signature ~ (m ()), MonadIO m) => O.MethodInfo TimerStopMethodInfo Timer signature where
    overloadedMethod _ = timerStop

#endif

#if ENABLE_OVERLOADING
type family ResolveTimerMethod (t :: Symbol) (o :: *) :: * where
    ResolveTimerMethod "continue" o = TimerContinueMethodInfo
    ResolveTimerMethod "destroy" o = TimerDestroyMethodInfo
    ResolveTimerMethod "elapsed" o = TimerElapsedMethodInfo
    ResolveTimerMethod "reset" o = TimerResetMethodInfo
    ResolveTimerMethod "start" o = TimerStartMethodInfo
    ResolveTimerMethod "stop" o = TimerStopMethodInfo
    ResolveTimerMethod l o = O.MethodResolutionFailed l o

instance (info ~ ResolveTimerMethod t Timer, O.MethodInfo info Timer p) => OL.IsLabel t (Timer -> p) where
#if MIN_VERSION_base(4,10,0)
    fromLabel = O.overloadedMethod (O.MethodProxy :: O.MethodProxy info)
#else
    fromLabel _ = O.overloadedMethod (O.MethodProxy :: O.MethodProxy info)
#endif

#endif