Trait gdk_pixbuf::subclass::prelude::ObjectSubclassExt

pub trait ObjectSubclassExt: ObjectSubclass {
    fn instance(&self) -> BorrowedObject<'_, Self::Type>;
    fn from_instance(obj: &Self::Type) -> &Self;
    fn obj(&self) -> BorrowedObject<'_, Self::Type>;
    fn from_obj(obj: &Self::Type) -> &Self;
    fn ref_counted(&self) -> ObjectImplRef<Self>;
    fn instance_data<U>(&self, type_: Type) -> Option<&U>
    where
        U: 'static + Any + Send + Sync;
}

Extension methods for all ObjectSubclass impls.

Required Methods

fn instance(&self) -> BorrowedObject<'_, Self::Type>

Returns the corresponding object instance.

fn from_instance(obj: &Self::Type) -> &Self

Returns the implementation from an instance.

fn obj(&self) -> BorrowedObject<'_, Self::Type>

Returns the corresponding object instance.

Shorter alias for instance().

fn from_obj(obj: &Self::Type) -> &Self

Returns the implementation from an instance.

Shorter alias for from_instance().

fn ref_counted(&self) -> ObjectImplRef<Self>

Returns a new reference-counted wrapper around self.

fn instance_data<U>(&self, type_: Type) -> Option<&U>where
    U: 'static + Any + Send + Sync,

Returns a pointer to the instance implementation specific data.

This is used for the subclassing infrastructure to store additional instance data.

Implementors

impl<T> ObjectSubclassExt for Twhere
    T: ObjectSubclass,