GI.GtkSource.Callbacks

Signals

SchedulerCallback

type C_SchedulerCallback = Int64 -> Ptr () -> IO CInt

Type for the callback on the (unwrapped) C side.

type SchedulerCallback

Arguments

 = Int64

deadline: the time the callback should complete by

-> IO Bool

Returns: True if there is more work to process, otherwise False and the handler is unregistered.

This function is called incrementally to process additional background work. A deadline is provided which can be checked using getMonotonicTime so that additional work can be processed each frame.

This is useful for situations where you are incrementally performing background work such as spell checking or semantic syntax highlighting.

Since: 5.2

type SchedulerCallback_WithClosures

Arguments

 = Int64

deadline: the time the callback should complete by

-> Ptr ()

userData: closure data provided when registering callback

-> IO Bool

Returns: True if there is more work to process, otherwise False and the handler is unregistered.

This function is called incrementally to process additional background work. A deadline is provided which can be checked using getMonotonicTime so that additional work can be processed each frame.

This is useful for situations where you are incrementally performing background work such as spell checking or semantic syntax highlighting.

Since: 5.2

drop_closures_SchedulerCallback :: SchedulerCallback -> SchedulerCallback_WithClosures

A simple wrapper that ignores the closure arguments.

dynamic_SchedulerCallback

Arguments

:: (HasCallStack, MonadIO m)

=> FunPtr C_SchedulerCallback

-> Int64

deadline: the time the callback should complete by

-> Ptr ()

userData: closure data provided when registering callback

-> m Bool

Returns: True if there is more work to process, otherwise False and the handler is unregistered.

Given a pointer to a foreign C function, wrap it into a function callable from Haskell.

genClosure_SchedulerCallback :: MonadIO m => SchedulerCallback -> m (GClosure C_SchedulerCallback)

Wrap the callback into a GClosure.

mk_SchedulerCallback :: C_SchedulerCallback -> IO (FunPtr C_SchedulerCallback)

Generate a function pointer callable from C code, from a C_SchedulerCallback.

noSchedulerCallback :: Maybe SchedulerCallback

A convenience synonym for Nothing :: Maybe SchedulerCallback.

noSchedulerCallback_WithClosures :: Maybe SchedulerCallback_WithClosures

A convenience synonym for Nothing :: Maybe SchedulerCallback_WithClosures.

wrap_SchedulerCallback :: Maybe (Ptr (FunPtr C_SchedulerCallback)) -> SchedulerCallback_WithClosures -> C_SchedulerCallback

Wrap a SchedulerCallback into a C_SchedulerCallback.