Enum gsk4::PathDirection

#[non_exhaustive]
pub enum PathDirection {
    FromStart,
    ToStart,
    ToEnd,
    FromEnd,
}

Available on crate feature v4_14 only.

The values of the PathDirection enum are used to pick one of the four tangents at a given point on the path.

Note that the directions for @GSK_PATH_FROM_START/@GSK_PATH_TO_END and @GSK_PATH_TO_START/@GSK_PATH_FROM_END will coincide for smooth points. Only sharp turns will exhibit four different directions.

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.

FromStart

The tangent in path direction of the incoming side of the path

ToStart

The tangent against path direction of the incoming side of the path

ToEnd

The tangent in path direction of the outgoing side of the path

FromEnd

The tangent against path direction of the outgoing side of the path

Trait Implementations

impl Clone for PathDirection

fn clone(&self) -> PathDirection

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for PathDirection

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

Formats the value using the given formatter.

impl Display for PathDirection

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

Formats the value using the given formatter.

impl From<PathDirection> for Value

fn from(v: PathDirection) -> Self

Converts to this type from the input type.

impl<'a> FromValue<'a> for PathDirection

type Checker = GenericValueTypeChecker<PathDirection>

Value type checker.

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

Get the contained value from a Value.

impl HasParamSpec for PathDirection

type ParamSpec = ParamSpecEnum

type SetValue = PathDirection

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

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

fn param_spec_builder() -> Self::BuilderFn

impl Hash for PathDirection

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 PathDirection

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

This method returns an Ordering between self and other.

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

Compares and returns the maximum of two values.

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

Compares and returns the minimum of two values.

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

Restrict a value to a certain interval.

impl PartialEq<PathDirection> for PathDirection

fn eq(&self, other: &PathDirection) -> 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<PathDirection> for PathDirection

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

fn static_type() -> Type

Returns the type identifier of Self.

impl ToValue for PathDirection

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 PathDirection

type Type = PathDirection

Type to get the Type from.

impl Copy for PathDirection

impl Eq for PathDirection

impl StructuralEq for PathDirection

impl StructuralPartialEq for PathDirection