Copyright	Will Thompson and Iñaki García Etxebarria
License	LGPL-2.1
Maintainer	Iñaki García Etxebarria
Safe Haskell	None
Language	Haskell2010

GI.Gsk.Callbacks

Contents

Signals
- ParseErrorFunc
- PathForeachFunc

Description

Synopsis

type C_ParseErrorFunc = Ptr ParseLocation -> Ptr ParseLocation -> Ptr GError -> Ptr () -> IO ()
type ParseErrorFunc = ParseLocation -> ParseLocation -> GError -> IO ()
type ParseErrorFunc_WithClosures = ParseLocation -> ParseLocation -> GError -> Ptr () -> IO ()
drop_closures_ParseErrorFunc :: ParseErrorFunc -> ParseErrorFunc_WithClosures
dynamic_ParseErrorFunc :: (HasCallStack, MonadIO m) => FunPtr C_ParseErrorFunc -> ParseLocation -> ParseLocation -> GError -> Ptr () -> m ()
genClosure_ParseErrorFunc :: MonadIO m => ParseErrorFunc -> m (GClosure C_ParseErrorFunc)
mk_ParseErrorFunc :: C_ParseErrorFunc -> IO (FunPtr C_ParseErrorFunc)
noParseErrorFunc :: Maybe ParseErrorFunc
noParseErrorFunc_WithClosures :: Maybe ParseErrorFunc_WithClosures
wrap_ParseErrorFunc :: Maybe (Ptr (FunPtr C_ParseErrorFunc)) -> ParseErrorFunc_WithClosures -> C_ParseErrorFunc
type C_PathForeachFunc = CUInt -> Ptr Point -> CSize -> CFloat -> Ptr () -> IO CInt
type PathForeachFunc = PathOperation -> Point -> CSize -> Float -> IO Bool
type PathForeachFunc_WithClosures = PathOperation -> Point -> CSize -> Float -> Ptr () -> IO Bool
drop_closures_PathForeachFunc :: PathForeachFunc -> PathForeachFunc_WithClosures
dynamic_PathForeachFunc :: (HasCallStack, MonadIO m) => FunPtr C_PathForeachFunc -> PathOperation -> Point -> CSize -> Float -> Ptr () -> m Bool
genClosure_PathForeachFunc :: MonadIO m => PathForeachFunc -> m (GClosure C_PathForeachFunc)
mk_PathForeachFunc :: C_PathForeachFunc -> IO (FunPtr C_PathForeachFunc)
noPathForeachFunc :: Maybe PathForeachFunc
noPathForeachFunc_WithClosures :: Maybe PathForeachFunc_WithClosures
wrap_PathForeachFunc :: Maybe (Ptr (FunPtr C_PathForeachFunc)) -> PathForeachFunc_WithClosures -> C_PathForeachFunc

Signals

ParseErrorFunc

type C_ParseErrorFunc = Ptr ParseLocation -> Ptr ParseLocation -> Ptr GError -> Ptr () -> IO () Source #

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

type ParseErrorFunc Source #

Arguments

= ParseLocation	`start`: start of the error location
-> ParseLocation	`end`: end of the error location
-> GError	`error`: the error
-> IO ()

Type of callback that is called when an error occurs during node deserialization.

type ParseErrorFunc_WithClosures Source #

Arguments

= ParseLocation	`start`: start of the error location
-> ParseLocation	`end`: end of the error location
-> GError	`error`: the error
-> Ptr ()	`userData`: user data
-> IO ()

Type of callback that is called when an error occurs during node deserialization.

drop_closures_ParseErrorFunc :: ParseErrorFunc -> ParseErrorFunc_WithClosures Source #

A simple wrapper that ignores the closure arguments.

dynamic_ParseErrorFunc Source #

Arguments

:: (HasCallStack, MonadIO m)
=> FunPtr C_ParseErrorFunc
-> ParseLocation	`start`: start of the error location
-> ParseLocation	`end`: end of the error location
-> GError	`error`: the error
-> Ptr ()	`userData`: user data
-> m ()

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

genClosure_ParseErrorFunc :: MonadIO m => ParseErrorFunc -> m (GClosure C_ParseErrorFunc) Source #

Wrap the callback into a GClosure.

mk_ParseErrorFunc :: C_ParseErrorFunc -> IO (FunPtr C_ParseErrorFunc) Source #

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

noParseErrorFunc :: Maybe ParseErrorFunc Source #

A convenience synonym for Nothing :: Maybe ParseErrorFunc.

noParseErrorFunc_WithClosures :: Maybe ParseErrorFunc_WithClosures Source #

A convenience synonym for Nothing :: Maybe ParseErrorFunc_WithClosures.

wrap_ParseErrorFunc :: Maybe (Ptr (FunPtr C_ParseErrorFunc)) -> ParseErrorFunc_WithClosures -> C_ParseErrorFunc Source #

Wrap a ParseErrorFunc into a C_ParseErrorFunc.

PathForeachFunc

type C_PathForeachFunc = CUInt -> Ptr Point -> CSize -> CFloat -> Ptr () -> IO CInt Source #

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

type PathForeachFunc Source #

Arguments

= PathOperation	`op`: The operation
-> Point	`pts`: The points of the operation
-> CSize	`nPts`: The number of points
-> Float	`weight`: The weight for conic curves, or unused if not a conic curve
-> IO Bool	Returns: `True` to continue iterating the path, `False` to immediately abort and not call the function again.

Type of the callback to iterate through the operations of a path.

For each operation, the callback is given the op itself, the points that the operation is applied to in pts, and a weight for conic curves. The nPts argument is somewhat redundant, since the number of points can be inferred from the operation.

Each contour of the path starts with a gSKPATHMOVE operation. Closed contours end with a gSKPATHCLOSE operation.

type PathForeachFunc_WithClosures Source #

Arguments

= PathOperation	`op`: The operation
-> Point	`pts`: The points of the operation
-> CSize	`nPts`: The number of points
-> Float	`weight`: The weight for conic curves, or unused if not a conic curve
-> Ptr ()	`userData`: The user data provided with the function
-> IO Bool	Returns: `True` to continue iterating the path, `False` to immediately abort and not call the function again.

Type of the callback to iterate through the operations of a path.

For each operation, the callback is given the op itself, the points that the operation is applied to in pts, and a weight for conic curves. The nPts argument is somewhat redundant, since the number of points can be inferred from the operation.

Each contour of the path starts with a gSKPATHMOVE operation. Closed contours end with a gSKPATHCLOSE operation.

drop_closures_PathForeachFunc :: PathForeachFunc -> PathForeachFunc_WithClosures Source #

A simple wrapper that ignores the closure arguments.

dynamic_PathForeachFunc Source #

Arguments

:: (HasCallStack, MonadIO m)
=> FunPtr C_PathForeachFunc
-> PathOperation	`op`: The operation
-> Point	`pts`: The points of the operation
-> CSize	`nPts`: The number of points
-> Float	`weight`: The weight for conic curves, or unused if not a conic curve
-> Ptr ()	`userData`: The user data provided with the function
-> m Bool	Returns: `True` to continue iterating the path, `False` to immediately abort and not call the function again.

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

genClosure_PathForeachFunc :: MonadIO m => PathForeachFunc -> m (GClosure C_PathForeachFunc) Source #

Wrap the callback into a GClosure.

mk_PathForeachFunc :: C_PathForeachFunc -> IO (FunPtr C_PathForeachFunc) Source #

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

noPathForeachFunc :: Maybe PathForeachFunc Source #

A convenience synonym for Nothing :: Maybe PathForeachFunc.

noPathForeachFunc_WithClosures :: Maybe PathForeachFunc_WithClosures Source #

A convenience synonym for Nothing :: Maybe PathForeachFunc_WithClosures.

wrap_PathForeachFunc :: Maybe (Ptr (FunPtr C_PathForeachFunc)) -> PathForeachFunc_WithClosures -> C_PathForeachFunc Source #

Wrap a PathForeachFunc into a C_PathForeachFunc.