Enum gtk4::SystemSetting

#[non_exhaustive]
pub enum SystemSetting {
    Dpi,
    FontName,
    FontConfig,
    Display,
    IconTheme,
}

Values that can be passed to the WidgetImpl::system_setting_changed() vfunc.

The values indicate which system setting has changed. Widgets may need to drop caches, or react otherwise.

Most of the values correspond to Settings properties.

More values may be added over time.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Dpi

the gtk-xft-dpi setting has changed

FontName

The gtk-font-name setting has changed

FontConfig

The font configuration has changed in a way that requires text to be redrawn. This can be any of the gtk-xft-antialias, gtk-xft-hinting, gtk-xft-hintstyle, gtk-xft-rgba or gtk-fontconfig-timestamp settings

Display

The display has changed

IconTheme

The icon theme has changed in a way that requires icons to be looked up again

Trait Implementations

impl Clone for SystemSetting

fn clone(&self) -> SystemSetting

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for SystemSetting

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

Formats the value using the given formatter.

impl From<SystemSetting> for Value

fn from(v: SystemSetting) -> Self

Converts to this type from the input type.

impl<'a> FromValue<'a> for SystemSetting

type Checker = GenericValueTypeChecker<SystemSetting>

Value type checker.

unsafe fn from_value(value: &'a Value) -> Self

Get the contained value from a Value.

impl HasParamSpec for SystemSetting

type ParamSpec = ParamSpecEnum

type SetValue = SystemSetting

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

type BuilderFn = fn(_: &str, _: SystemSetting) -> ParamSpecEnumBuilder<'_, SystemSetting>

fn param_spec_builder() -> Self::BuilderFn

impl Hash for SystemSetting

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

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 SystemSetting

fn cmp(&self, other: &SystemSetting) -> 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 PartialEq for SystemSetting

fn eq(&self, other: &SystemSetting) -> 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 PartialOrd for SystemSetting

fn partial_cmp(&self, other: &SystemSetting) -> 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 SystemSetting

fn static_type() -> Type

Returns the type identifier of Self.

impl ToValue for SystemSetting

fn to_value(&self) -> Value

Convert a value to a Value.

fn value_type(&self) -> Type

Returns the type identifier of self.

impl ValueType for SystemSetting

type Type = SystemSetting

Type to get the Type from.

impl Copy for SystemSetting

impl Eq for SystemSetting

impl StructuralPartialEq for SystemSetting