Enum ColorChannel 

#[non_exhaustive]
pub enum ColorChannel {
    Red,
    Green,
    Blue,
    Alpha,
}

Available on crate feature v4_22 only.

Enumerates the color channels of RGBA values as used in GdkColor and OpenGL/Vulkan shaders.

Note that this is not the order of pixel values in Cairo and MemoryFormat can have many different orders.

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.

Red

The red color channel, aka 0

Green

The green color channel, aka 1

Blue

The blue color channel, aka 2

Alpha

The alpha color channel, aka 3

Trait Implementations

impl Clone for ColorChannel

fn clone(&self) -> ColorChannel

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ColorChannel

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

Formats the value using the given formatter.

impl From<ColorChannel> for Value

fn from(v: ColorChannel) -> Self

Converts to this type from the input type.

impl<'a> FromValue<'a> for ColorChannel

type Checker = GenericValueTypeChecker<ColorChannel>

Value type checker.

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

Get the contained value from a Value.

impl HasParamSpec for ColorChannel

type ParamSpec = ParamSpecEnum

type SetValue = ColorChannel

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

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

fn param_spec_builder() -> Self::BuilderFn

impl Hash for ColorChannel

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 ColorChannel

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

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

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

fn static_type() -> Type

Returns the type identifier of Self.

impl ToValue for ColorChannel

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 ColorChannel

type Type = ColorChannel

Type to get the Type from.

impl Copy for ColorChannel

impl Eq for ColorChannel

impl StructuralPartialEq for ColorChannel