Struct gtk4::ATContext

pub struct ATContext { /* private fields */ }

ATContext is an abstract class provided by GTK to communicate to platform-specific assistive technologies API.

Each platform supported by GTK implements a ATContext subclass, and is responsible for updating the accessible state in response to state changes in Accessible.

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

Properties

accessible

The Accessible that created the ATContext instance.

Readable | Writeable | Construct Only

accessible-role

The accessible role used by the AT context.

Depending on the given role, different states and properties can be set or retrieved.

Readable | Writeable | Construct

display

The gdk::Display for the ATContext.

Readable | Writeable

Signals

state-change

Emitted when the attributes of the accessible for the ATContext instance change.

Implements

[trait@glib::ObjectExt]

Implementations

impl ATContext

pub fn create( accessible_role: AccessibleRole, accessible: &impl IsA<Accessible>, display: &impl IsA<Display> ) -> Option<ATContext>

Creates a new ATContext instance for the given accessible role, accessible instance, and display connection.

The ATContext implementation being instantiated will depend on the platform.

accessible_role

the accessible role used by the ATContext

accessible

the Accessible implementation using the ATContext

display

the gdk::Display used by the ATContext

Returns

the ATContext

pub fn accessible(&self) -> Accessible

Retrieves the Accessible using this context.

Returns

a Accessible

pub fn accessible_role(&self) -> AccessibleRole

Retrieves the accessible role of this context.

Returns

a AccessibleRole

pub fn set_accessible_role(&self, accessible_role: AccessibleRole)

The accessible role used by the AT context.

Depending on the given role, different states and properties can be set or retrieved.

pub fn display(&self) -> Option<Display>

The gdk::Display for the ATContext.

pub fn set_display<P: IsA<Display>>(&self, display: Option<&P>)

The gdk::Display for the ATContext.

pub fn connect_state_change<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

Emitted when the attributes of the accessible for the ATContext instance change.

pub fn connect_accessible_role_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

pub fn connect_display_notify<F: Fn(&Self) + 'static>( &self, f: F ) -> SignalHandlerId

Trait Implementations

impl Clone for ATContext

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 ATContext

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

Formats the value using the given formatter.

impl HasParamSpec for ATContext

type ParamSpec = ParamSpecObject

type SetValue = ATContext

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

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

fn param_spec_builder() -> Self::BuilderFn

impl Hash for ATContext

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 Ord for ATContext

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

This method returns an Ordering between self and other.

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

where Self: Sized,

Compares and returns the maximum of two values.

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

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl ParentClassIs for ATContext

type Parent = Object

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

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 ATContext

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 ATContext

fn static_type() -> Type

Returns the type identifier of Self.

impl Eq for ATContext