Struct gtk4::LayoutChild

#[repr(transparent)]
pub struct LayoutChild { /* private fields */ }

LayoutChild is the base class for objects that are meant to hold layout properties.

If a LayoutManager has per-child properties, like their packing type, or the horizontal and vertical span, or the icon name, then the layout manager should use a LayoutChild implementation to store those properties.

A LayoutChild instance is only ever valid while a widget is part of a layout.

This is an Abstract Base Class, you cannot instantiate it.

Properties

child-widget

The widget that is associated to the LayoutChild instance.

Readable | Writeable | Construct Only

layout-manager

The layout manager that created the LayoutChild instance.

Readable | Writeable | Construct Only

Implements

LayoutChildExt, glib::ObjectExt

Implementations

impl LayoutChild

pub const NONE: Option<&'static LayoutChild> = None

Trait Implementations

impl Clone for LayoutChild

fn clone(&self) -> Self

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for LayoutChild

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for LayoutChild

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl HasParamSpec for LayoutChild

type ParamSpec = ParamSpecObject

type SetValue = LayoutChild

Preferred value to be used as setter for the associated ParamSpec.

type BuilderFn = fn(_: &str) -> ParamSpecObjectBuilder<'_, LayoutChild>

fn param_spec_builder() -> Self::BuilderFn

impl Hash for LayoutChild

fn hash<H>(&self, state: &mut H)where H: Hasher,

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<T: LayoutChildImpl> IsSubclassable<T> for LayoutChild

fn class_init(class: &mut Class<Self>)

Override the virtual methods of this class for the given subclass and do other class initialization.

fn instance_init(instance: &mut InitializingObject<T>)

Instance specific initialization.

impl Ord for LayoutChild

fn cmp(&self, other: &Self) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Selfwhere Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Selfwhere Self: Sized + PartialOrd<Self>,

Restrict a value to a certain interval.

impl ParentClassIs for LayoutChild

type Parent = Object

impl<OT: ObjectType> PartialEq<OT> for LayoutChild

fn eq(&self, other: &OT) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<OT: ObjectType> PartialOrd<OT> for LayoutChild

fn partial_cmp(&self, other: &OT) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl StaticType for LayoutChild

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for LayoutChild

impl IsA<LayoutChild> for ConstraintLayoutChild

impl IsA<LayoutChild> for FixedLayoutChild

impl IsA<LayoutChild> for GridLayoutChild

impl IsA<LayoutChild> for OverlayLayoutChild