gi-pango-1.0.26: Pango bindings
CopyrightWill Thompson and Iñaki García Etxebarria
LicenseLGPL-2.1
MaintainerIñaki García Etxebarria
Safe HaskellSafe-Inferred
LanguageHaskell2010

GI.Pango.Callbacks

Description

 
Synopsis

Signals

AttrClassCopyFieldCallback

type AttrClassCopyFieldCallback = Attribute -> IO Attribute Source #

No description available in the introspection data.

type C_AttrClassCopyFieldCallback = Ptr Attribute -> IO (Ptr Attribute) Source #

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

dynamic_AttrClassCopyFieldCallback :: (HasCallStack, MonadIO m) => FunPtr C_AttrClassCopyFieldCallback -> Attribute -> m Attribute Source #

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

genClosure_AttrClassCopyFieldCallback :: MonadIO m => AttrClassCopyFieldCallback -> m (GClosure C_AttrClassCopyFieldCallback) Source #

Wrap the callback into a GClosure.

mk_AttrClassCopyFieldCallback :: C_AttrClassCopyFieldCallback -> IO (FunPtr C_AttrClassCopyFieldCallback) Source #

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

noAttrClassCopyFieldCallback :: Maybe AttrClassCopyFieldCallback Source #

A convenience synonym for Nothing :: Maybe AttrClassCopyFieldCallback.

wrap_AttrClassCopyFieldCallback :: Maybe (Ptr (FunPtr C_AttrClassCopyFieldCallback)) -> AttrClassCopyFieldCallback -> C_AttrClassCopyFieldCallback Source #

Wrap a AttrClassCopyFieldCallback into a C_AttrClassCopyFieldCallback.

AttrClassDestroyFieldCallback

type AttrClassDestroyFieldCallback = Attribute -> IO () Source #

No description available in the introspection data.

type C_AttrClassDestroyFieldCallback = Ptr Attribute -> IO () Source #

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

dynamic_AttrClassDestroyFieldCallback :: (HasCallStack, MonadIO m) => FunPtr C_AttrClassDestroyFieldCallback -> Attribute -> m () Source #

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

genClosure_AttrClassDestroyFieldCallback :: MonadIO m => AttrClassDestroyFieldCallback -> m (GClosure C_AttrClassDestroyFieldCallback) Source #

Wrap the callback into a GClosure.

mk_AttrClassDestroyFieldCallback :: C_AttrClassDestroyFieldCallback -> IO (FunPtr C_AttrClassDestroyFieldCallback) Source #

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

noAttrClassDestroyFieldCallback :: Maybe AttrClassDestroyFieldCallback Source #

A convenience synonym for Nothing :: Maybe AttrClassDestroyFieldCallback.

wrap_AttrClassDestroyFieldCallback :: Maybe (Ptr (FunPtr C_AttrClassDestroyFieldCallback)) -> AttrClassDestroyFieldCallback -> C_AttrClassDestroyFieldCallback Source #

Wrap a AttrClassDestroyFieldCallback into a C_AttrClassDestroyFieldCallback.

AttrClassEqualFieldCallback

type AttrClassEqualFieldCallback = Attribute -> Attribute -> IO Bool Source #

No description available in the introspection data.

type C_AttrClassEqualFieldCallback = Ptr Attribute -> Ptr Attribute -> IO CInt Source #

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

dynamic_AttrClassEqualFieldCallback :: (HasCallStack, MonadIO m) => FunPtr C_AttrClassEqualFieldCallback -> Attribute -> Attribute -> m Bool Source #

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

genClosure_AttrClassEqualFieldCallback :: MonadIO m => AttrClassEqualFieldCallback -> m (GClosure C_AttrClassEqualFieldCallback) Source #

Wrap the callback into a GClosure.

mk_AttrClassEqualFieldCallback :: C_AttrClassEqualFieldCallback -> IO (FunPtr C_AttrClassEqualFieldCallback) Source #

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

noAttrClassEqualFieldCallback :: Maybe AttrClassEqualFieldCallback Source #

A convenience synonym for Nothing :: Maybe AttrClassEqualFieldCallback.

wrap_AttrClassEqualFieldCallback :: Maybe (Ptr (FunPtr C_AttrClassEqualFieldCallback)) -> AttrClassEqualFieldCallback -> C_AttrClassEqualFieldCallback Source #

Wrap a AttrClassEqualFieldCallback into a C_AttrClassEqualFieldCallback.

AttrDataCopyFunc

type AttrDataCopyFunc Source #

Arguments

 = IO (Ptr ())

Returns: new copy of userData.

Type of a function that can duplicate user data for an attribute.

type AttrDataCopyFunc_WithClosures Source #

Arguments

 = Ptr ()

userData: user data to copy

-> IO (Ptr ())

Returns: new copy of userData.

Type of a function that can duplicate user data for an attribute.

type C_AttrDataCopyFunc = Ptr () -> IO (Ptr ()) Source #

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

drop_closures_AttrDataCopyFunc :: AttrDataCopyFunc -> AttrDataCopyFunc_WithClosures Source #

A simple wrapper that ignores the closure arguments.

dynamic_AttrDataCopyFunc Source #

Arguments

:: (HasCallStack, MonadIO m) 
=> FunPtr C_AttrDataCopyFunc 
-> Ptr ()

userData: user data to copy

-> m (Ptr ())

Returns: new copy of userData.

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

genClosure_AttrDataCopyFunc :: MonadIO m => AttrDataCopyFunc -> m (GClosure C_AttrDataCopyFunc) Source #

Wrap the callback into a GClosure.

mk_AttrDataCopyFunc :: C_AttrDataCopyFunc -> IO (FunPtr C_AttrDataCopyFunc) Source #

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

noAttrDataCopyFunc :: Maybe AttrDataCopyFunc Source #

A convenience synonym for Nothing :: Maybe AttrDataCopyFunc.

noAttrDataCopyFunc_WithClosures :: Maybe AttrDataCopyFunc_WithClosures Source #

A convenience synonym for Nothing :: Maybe AttrDataCopyFunc_WithClosures.

wrap_AttrDataCopyFunc :: Maybe (Ptr (FunPtr C_AttrDataCopyFunc)) -> AttrDataCopyFunc_WithClosures -> C_AttrDataCopyFunc Source #

Wrap a AttrDataCopyFunc into a C_AttrDataCopyFunc.

AttrFilterFunc

type AttrFilterFunc Source #

Arguments

 = Attribute

attribute: a Pango attribute

-> IO Bool

Returns: True if the attribute should be selected for filtering, False otherwise.

Type of a function filtering a list of attributes.

type AttrFilterFunc_WithClosures Source #

Arguments

 = Attribute

attribute: a Pango attribute

-> Ptr ()

userData: user data passed to the function

-> IO Bool

Returns: True if the attribute should be selected for filtering, False otherwise.

Type of a function filtering a list of attributes.

type C_AttrFilterFunc = Ptr Attribute -> Ptr () -> IO CInt Source #

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

drop_closures_AttrFilterFunc :: AttrFilterFunc -> AttrFilterFunc_WithClosures Source #

A simple wrapper that ignores the closure arguments.

dynamic_AttrFilterFunc Source #

Arguments

:: (HasCallStack, MonadIO m) 
=> FunPtr C_AttrFilterFunc 
-> Attribute

attribute: a Pango attribute

-> Ptr ()

userData: user data passed to the function

-> m Bool

Returns: True if the attribute should be selected for filtering, False otherwise.

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

genClosure_AttrFilterFunc :: MonadIO m => AttrFilterFunc -> m (GClosure C_AttrFilterFunc) Source #

Wrap the callback into a GClosure.

mk_AttrFilterFunc :: C_AttrFilterFunc -> IO (FunPtr C_AttrFilterFunc) Source #

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

noAttrFilterFunc :: Maybe AttrFilterFunc Source #

A convenience synonym for Nothing :: Maybe AttrFilterFunc.

noAttrFilterFunc_WithClosures :: Maybe AttrFilterFunc_WithClosures Source #

A convenience synonym for Nothing :: Maybe AttrFilterFunc_WithClosures.

wrap_AttrFilterFunc :: Maybe (Ptr (FunPtr C_AttrFilterFunc)) -> AttrFilterFunc_WithClosures -> C_AttrFilterFunc Source #

Wrap a AttrFilterFunc into a C_AttrFilterFunc.

FontsetForeachFunc

type C_FontsetForeachFunc = Ptr Fontset -> Ptr Font -> Ptr () -> IO CInt Source #

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

type FontsetForeachFunc Source #

Arguments

 = Fontset

fontset: a PangoFontset

-> Font

font: a font from fontset

-> IO Bool

Returns: if True, stop iteration and return immediately.

Callback used when enumerating fonts in a fontset.

See [methodpango.Fontset.foreach].

Since: 1.4

type FontsetForeachFunc_WithClosures Source #

Arguments

 = Fontset

fontset: a PangoFontset

-> Font

font: a font from fontset

-> Ptr ()

userData: callback data

-> IO Bool

Returns: if True, stop iteration and return immediately.

Callback used when enumerating fonts in a fontset.

See [methodpango.Fontset.foreach].

Since: 1.4

drop_closures_FontsetForeachFunc :: FontsetForeachFunc -> FontsetForeachFunc_WithClosures Source #

A simple wrapper that ignores the closure arguments.

dynamic_FontsetForeachFunc Source #

Arguments

:: (HasCallStack, MonadIO m, IsFontset a, IsFont b) 
=> FunPtr C_FontsetForeachFunc 
-> a

fontset: a PangoFontset

-> b

font: a font from fontset

-> Ptr ()

userData: callback data

-> m Bool

Returns: if True, stop iteration and return immediately.

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

genClosure_FontsetForeachFunc :: MonadIO m => FontsetForeachFunc -> m (GClosure C_FontsetForeachFunc) Source #

Wrap the callback into a GClosure.

mk_FontsetForeachFunc :: C_FontsetForeachFunc -> IO (FunPtr C_FontsetForeachFunc) Source #

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

noFontsetForeachFunc :: Maybe FontsetForeachFunc Source #

A convenience synonym for Nothing :: Maybe FontsetForeachFunc.

noFontsetForeachFunc_WithClosures :: Maybe FontsetForeachFunc_WithClosures Source #

A convenience synonym for Nothing :: Maybe FontsetForeachFunc_WithClosures.

wrap_FontsetForeachFunc :: Maybe (Ptr (FunPtr C_FontsetForeachFunc)) -> FontsetForeachFunc_WithClosures -> C_FontsetForeachFunc Source #

Wrap a FontsetForeachFunc into a C_FontsetForeachFunc.