GI.Clutter.Interfaces.Content

The Content structure is an opaque type whose members cannot be acccessed directly.

Since: 1.10

Exported types

newtype Content

Memory-managed wrapper type.

Constructors

Content (ManagedPtr Content)

Instances

Eq Content

Defined in GI.Clutter.Interfaces.Content

Methods

(==) :: Content -> Content -> Bool

(/=) :: Content -> Content -> Bool

GObject Content

Defined in GI.Clutter.Interfaces.Content

ManagedPtrNewtype Content

Defined in GI.Clutter.Interfaces.Content

Methods

toManagedPtr :: Content -> ManagedPtr Content

TypedObject Content

Defined in GI.Clutter.Interfaces.Content

Methods

glibType :: IO GType

HasParentTypes Content

Defined in GI.Clutter.Interfaces.Content

IsGValue (Maybe Content)

Convert Content to and from GValue. See toGValue and fromGValue.

Defined in GI.Clutter.Interfaces.Content

Methods

gvalueGType_ :: IO GType

gvalueSet_ :: Ptr GValue -> Maybe Content -> IO ()

gvalueGet_ :: Ptr GValue -> IO (Maybe Content)

type ParentTypes Content

Defined in GI.Clutter.Interfaces.Content

type ParentTypes Content = '[Object]

class (GObject o, IsDescendantOf Content o) => IsContent o

Type class for types which can be safely cast to Content, for instance with toContent.

Instances

(GObject o, IsDescendantOf Content o) => IsContent o

Defined in GI.Clutter.Interfaces.Content

toContent :: (MonadIO m, IsContent o) => o -> m Content

Cast to Content, for types for which this is known to be safe. For general casts, use castTo.

Methods

Click to display all available methods, including inherited ones

Methods

bindProperty, bindPropertyFull, forceFloating, freezeNotify, getv, invalidate, isFloating, notify, notifyByPspec, ref, refSink, runDispose, stealData, stealQdata, thawNotify, unref, watchClosure.

Getters

getData, getPreferredSize, getProperty, getQdata.

Setters

setData, setDataFull, setProperty.

getPreferredSize

contentGetPreferredSize

Arguments

:: (HasCallStack, MonadIO m, IsContent a)

=> a

content: a Content

-> m (Bool, Float, Float)

Returns: True if the content has a preferred size, and False otherwise

Retrieves the natural size of the content, if any.

The natural size of a Content is defined as the size the content would have regardless of the allocation of the actor that is painting it, for instance the size of an image data.

Since: 1.10

invalidate

contentInvalidate

Arguments

:: (HasCallStack, MonadIO m, IsContent a)

=> a

content: a Content

-> m ()

Invalidates a Content.

This function should be called by Content implementations when they change the way a the content should be painted regardless of the actor state.

Since: 1.10

Signals

attached

type ContentAttachedCallback

Arguments

 = Actor

actor: a Actor

-> IO ()

This signal is emitted each time a Content implementation is assigned to a Actor.

Since: 1.10

afterContentAttached :: (IsContent a, MonadIO m) => a -> ((?self :: a) => ContentAttachedCallback) -> m SignalHandlerId

Connect a signal handler for the attached signal, to be run after the default handler. When overloading is enabled, this is equivalent to

after content #attached callback

By default the object invoking the signal is not passed to the callback. If you need to access it, you can use the implit ?self parameter. Note that this requires activating the ImplicitParams GHC extension.

onContentAttached :: (IsContent a, MonadIO m) => a -> ((?self :: a) => ContentAttachedCallback) -> m SignalHandlerId

Connect a signal handler for the attached signal, to be run before the default handler. When overloading is enabled, this is equivalent to

on content #attached callback

detached

type ContentDetachedCallback

Arguments

 = Actor

actor: a Actor

-> IO ()

This signal is emitted each time a Content implementation is removed from a Actor.

Since: 1.10

afterContentDetached :: (IsContent a, MonadIO m) => a -> ((?self :: a) => ContentDetachedCallback) -> m SignalHandlerId

Connect a signal handler for the detached signal, to be run after the default handler. When overloading is enabled, this is equivalent to

after content #detached callback

By default the object invoking the signal is not passed to the callback. If you need to access it, you can use the implit ?self parameter. Note that this requires activating the ImplicitParams GHC extension.

onContentDetached :: (IsContent a, MonadIO m) => a -> ((?self :: a) => ContentDetachedCallback) -> m SignalHandlerId

Connect a signal handler for the detached signal, to be run before the default handler. When overloading is enabled, this is equivalent to

on content #detached callback