Enum InterfaceContrast 

#[non_exhaustive]
pub enum InterfaceContrast {
    Unsupported,
    NoPreference,
    More,
    Less,
}

Available on crate feature v4_20 only.

Values for the gtk-interface-contrast and prefers-contrast properties that indicates the preferred level of contrast.

This information can be used inside CSS via media queries.

More values may be added to this enumeration. Unknown values should be treated the same as GTK_INTERFACE_CONTRAST_NO_PREFERENCE.

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.

Unsupported

The system doesn’t support contrast levels

NoPreference

No particular preference for contrast

More

More contrast is preferred

Less

Less contrast is preferred

Trait Implementations

impl Clone for InterfaceContrast

fn clone(&self) -> InterfaceContrast

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for InterfaceContrast

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

Formats the value using the given formatter.

impl From<InterfaceContrast> for Value

fn from(v: InterfaceContrast) -> Self

Converts to this type from the input type.

impl<'a> FromValue<'a> for InterfaceContrast

type Checker = GenericValueTypeChecker<InterfaceContrast>

Value type checker.

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

Get the contained value from a Value.

impl HasParamSpec for InterfaceContrast

type ParamSpec = ParamSpecEnum

type SetValue = InterfaceContrast

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

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

fn param_spec_builder() -> Self::BuilderFn

impl Hash for InterfaceContrast

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 InterfaceContrast

fn cmp(&self, other: &InterfaceContrast) -> 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,

Restrict a value to a certain interval.

impl PartialEq for InterfaceContrast

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for InterfaceContrast

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

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

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

Tests less than (for self and other) and is used by the < operator.

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

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

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

Tests greater than (for self and other) and is used by the > operator.

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

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

impl StaticType for InterfaceContrast

fn static_type() -> Type

Returns the type identifier of Self.

impl ToValue for InterfaceContrast

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 InterfaceContrast

type Type = InterfaceContrast

Type to get the Type from.

impl Copy for InterfaceContrast

impl Eq for InterfaceContrast

impl StructuralPartialEq for InterfaceContrast