Enum gsk4::FillRule

#[non_exhaustive]
pub enum FillRule {
    Winding,
    EvenOdd,
}

Available on crate feature v4_14 only.

FillRule is used to select how paths are filled.

Whether or not a point is included in the fill is determined by taking a ray from that point to infinity and looking at intersections with the path. The ray can be in any direction, as long as it doesn’t pass through the end point of a segment or have a tricky intersection such as intersecting tangent to the path.

(Note that filling is not actually implemented in this way. This is just a description of the rule that is applied.)

New entries may be added in future versions.

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.

Winding

If the path crosses the ray from left-to-right, counts +1. If the path crosses the ray from right to left, counts -1. (Left and right are determined from the perspective of looking along the ray from the starting point.) If the total count is non-zero, the point will be filled.

EvenOdd

Counts the total number of intersections, without regard to the orientation of the contour. If the total number of intersections is odd, the point will be filled.

Trait Implementations

impl Clone for FillRule

fn clone(&self) -> FillRule

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FillRule

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

Formats the value using the given formatter.

impl From<FillRule> for Value

fn from(v: FillRule) -> Self

Converts to this type from the input type.

impl<'a> FromValue<'a> for FillRule

type Checker = GenericValueTypeChecker<FillRule>

Value type checker.

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

Get the contained value from a Value.

impl HasParamSpec for FillRule

type ParamSpec = ParamSpecEnum

type SetValue = FillRule

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

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

fn param_spec_builder() -> Self::BuilderFn

impl Hash for FillRule

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 FillRule

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

fn eq(&self, other: &FillRule) -> 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 FillRule

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

fn static_type() -> Type

Returns the type identifier of Self.

impl ToValue for FillRule

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 FillRule

type Type = FillRule

Type to get the Type from.

impl Copy for FillRule

impl Eq for FillRule

impl StructuralPartialEq for FillRule