GI.Rsvg.Callbacks

Signals

SizeFunc

type C_SizeFunc = Ptr Int32 -> Ptr Int32 -> Ptr () -> IO ()

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

type SizeFunc = IO (Int32, Int32)

Deprecated: (Since version 2.14.)Use handleRenderDocument instead, which lets you specifya viewport size in which to render the SVG document.

Function to let a user of the library specify the SVG's dimensions

See the documentation for handleSetSizeCallback for an example, and for the reasons for deprecation.

type SizeFunc_WithClosures

Arguments

 = Ptr ()

userData: user data

-> IO (Int32, Int32)

Function to let a user of the library specify the SVG's dimensions

See the documentation for handleSetSizeCallback for an example, and for the reasons for deprecation.

drop_closures_SizeFunc :: SizeFunc -> SizeFunc_WithClosures

A simple wrapper that ignores the closure arguments.

dynamic_SizeFunc

Arguments

:: (HasCallStack, MonadIO m)

=> FunPtr C_SizeFunc

-> Ptr ()

userData: user data

-> m (Int32, Int32)

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

genClosure_SizeFunc :: MonadIO m => SizeFunc -> m (GClosure C_SizeFunc)

Wrap the callback into a GClosure.

mk_SizeFunc :: C_SizeFunc -> IO (FunPtr C_SizeFunc)

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

noSizeFunc :: Maybe SizeFunc

A convenience synonym for Nothing :: Maybe SizeFunc.

noSizeFunc_WithClosures :: Maybe SizeFunc_WithClosures

A convenience synonym for Nothing :: Maybe SizeFunc_WithClosures.

wrap_SizeFunc :: Maybe (Ptr (FunPtr C_SizeFunc)) -> SizeFunc_WithClosures -> C_SizeFunc

Wrap a SizeFunc into a C_SizeFunc.