Struct Rgba 

pub struct Rgba {
    pub r: u8,
    pub g: u8,
    pub b: u8,
    pub a: u8,
}

An sRGB colour with straight alpha, components 0–255.

Fields

r: u8

g: u8

b: u8

a: u8

Implementations

impl Rgba

pub const BLACK: Rgba

pub const WHITE: Rgba

pub const TRANSPARENT: Rgba

pub const fn rgb(r: u8, g: u8, b: u8) -> Rgba

pub const fn rgba(r: u8, g: u8, b: u8, a: u8) -> Rgba

pub fn from_hex(s: &str) -> Option<Rgba>

RRGGBB or #RRGGBB (also RRGGBBAA).

pub fn hex(&self) -> String

RRGGBB uppercase (no alpha).

pub fn with_alpha(self, a: u8) -> Rgba

pub fn to_f32(self) -> [f32; 4]

pub fn from_f64(r: f64, g: f64, b: f64, a: f64) -> Rgba

pub fn luminance(self) -> f64

Relative luminance (WCAG), 0–1.

pub fn contrast(self, other: Rgba) -> f64

WCAG contrast ratio between two colours (1–21).

pub fn to_hsl(self) -> (f64, f64, f64)

pub fn from_hsl(h: f64, s: f64, l: f64, a: u8) -> Rgba

pub fn lerp(self, o: Rgba, t: f64) -> Rgba

Linear interpolation (straight alpha).

Trait Implementations

impl Clone for Rgba

fn clone(&self) -> Rgba

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Rgba

impl Debug for Rgba

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

Formats the value using the given formatter.

impl Default for Rgba

fn default() -> Rgba

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Rgba

fn deserialize<__D>( __deserializer: __D, ) -> Result<Rgba, <__D as Deserializer<'de>>::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Rgba

impl Hash for Rgba

fn hash<__H>(&self, state: &mut __H)

where __H: Hasher,

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 PartialEq for Rgba

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Rgba

fn serialize<__S>( &self, __serializer: __S, ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Rgba