Enum pango::GravityHint

#[non_exhaustive]
pub enum GravityHint {
    Natural,
    Strong,
    Line,
    // some variants omitted
}

The GravityHint defines how horizontal scripts should behave in a vertical context. That is, English excerpt in a vertical paragraph for example.

See Gravity.

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.

Natural

scripts will take their natural gravity based on the base gravity and the script. This is the default.

Strong

always use the base gravity set, regardless of the script.

Line

for scripts not in their natural direction (eg. Latin in East gravity), choose per-script gravity such that every script respects the line progression. This means, Latin and Arabic will take opposite gravities and both flow top-to-bottom for example.

Trait Implementations

impl Clone for GravityHint

fn clone(&self) -> GravityHint

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for GravityHint

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

Formats the value using the given formatter.

impl Display for GravityHint

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

Formats the value using the given formatter.

impl<'a> FromValue<'a> for GravityHint

type Checker = GenericValueTypeChecker<Self>

Value type checker.

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

Get the contained value from a Value.

impl Hash for GravityHint

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, 

Feeds a slice of this type into the given Hasher.

impl Ord for GravityHint

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

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

Restrict a value to a certain interval.

impl PartialEq<GravityHint> for GravityHint

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

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

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

This method tests for !=.

impl PartialOrd<GravityHint> for GravityHint

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

fn static_type() -> Type

Returns the type identifier of Self.

impl ToValue for GravityHint

fn to_value(&self) -> Value

Convert a value to a Value.

fn value_type(&self) -> Type

Returns the type identifer of self.

impl ValueType for GravityHint

type Type = Self

Type to get the Type from.

impl Copy for GravityHint

impl Eq for GravityHint

impl StructuralEq for GravityHint

impl StructuralPartialEq for GravityHint