Struct gtk4::Accessible

source ·

pub struct Accessible { /* private fields */ }

Expand description

Accessible is an interface for describing UI elements for Assistive Technologies.

Every accessible implementation has:

a “role”, represented by a value of the AccessibleRole enumeration
an “attribute”, represented by a set of AccessibleState, AccessibleProperty and AccessibleRelation values

The role cannot be changed after instantiating a Accessible implementation.

The attributes are updated every time a UI element’s state changes in a way that should be reflected by assistive technologies. For instance, if a Widget visibility changes, the AccessibleState::Hidden state will also change to reflect the visible property.

Every accessible implementation is part of a tree of accessible objects. Normally, this tree corresponds to the widget tree, but can be customized by reimplementing the vfunc::Gtk::Accessible::get_accessible_parent, vfunc::Gtk::Accessible::get_first_accessible_child and vfunc::Gtk::Accessible::get_next_accessible_sibling virtual functions. Note that you can not create a top-level accessible object as of now, which means that you must always have a parent accessible object. Also note that when an accessible object does not correspond to a widget, and it has children, whose implementation you don’t control, it is necessary to ensure the correct shape of the a11y tree by calling AccessibleExt::set_accessible_parent() and updating the sibling by AccessibleExt::update_next_accessible_sibling().

§Properties

§`accessible-role`

The accessible role of the given Accessible implementation.

The accessible role cannot be changed once set.

Readable | Writeable

Struct gtk4::AccessibleCopy item path

§Properties

§accessible-role

§Implements

Implementations§

impl Accessible

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

Trait Implementations§

impl Clone for Accessible

fn clone(&self) -> Self

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

impl Debug for Accessible

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

impl HasParamSpec for Accessible

type ParamSpec = ParamSpecObject

type SetValue = Accessible

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

fn param_spec_builder() -> Self::BuilderFn

impl Hash for Accessible

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

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

impl<T: AccessibleImpl> IsImplementable<T> for Accessible

fn interface_init(iface: &mut Interface<Self>)

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

impl Ord for Accessible

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

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

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

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

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

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

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

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

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

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

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

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

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

impl StaticType for Accessible

fn static_type() -> Type

impl Eq for Accessible

impl IsA<Accessible> for AboutDialog

impl IsA<Accessible> for AccessibleRange

impl IsA<Accessible> for ActionBar

impl IsA<Accessible> for Actionable

impl IsA<Accessible> for AppChooser

impl IsA<Accessible> for AppChooserButton

impl IsA<Accessible> for AppChooserDialog

impl IsA<Accessible> for AppChooserWidget

impl IsA<Accessible> for ApplicationWindow

impl IsA<Accessible> for AspectFrame

impl IsA<Accessible> for Assistant

impl IsA<Accessible> for Box

impl IsA<Accessible> for Button

impl IsA<Accessible> for Calendar

impl IsA<Accessible> for CellEditable

impl IsA<Accessible> for CellView

impl IsA<Accessible> for CenterBox

impl IsA<Accessible> for CheckButton

impl IsA<Accessible> for ColorButton

impl IsA<Accessible> for ColorChooserDialog

impl IsA<Accessible> for ColorChooserWidget

impl IsA<Accessible> for ColorDialogButton

impl IsA<Accessible> for ColumnView

impl IsA<Accessible> for ComboBox

impl IsA<Accessible> for ComboBoxText

impl IsA<Accessible> for Dialog

impl IsA<Accessible> for DragIcon

impl IsA<Accessible> for DrawingArea

impl IsA<Accessible> for DropDown

impl IsA<Accessible> for Editable

impl IsA<Accessible> for EditableLabel

impl IsA<Accessible> for EmojiChooser

impl IsA<Accessible> for Entry

impl IsA<Accessible> for Expander

impl IsA<Accessible> for FileChooserDialog

impl IsA<Accessible> for FileChooserWidget

impl IsA<Accessible> for Fixed

impl IsA<Accessible> for FlowBox

impl IsA<Accessible> for FlowBoxChild

Struct gtk4::Accessible

§`accessible-role`

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

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

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

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

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