Struct Rgba 

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

An RGBA colour with 8 bits per channel.

Each channel (r, g, b, a) ranges from 0 to 255.

Fields

r: u8

Red channel.

g: u8

Green channel.

b: u8

Blue channel.

a: u8

Alpha channel (0 = fully transparent, 255 = fully opaque).

Implementations

impl Rgba

pub const WHITE: Self

Pure white, fully opaque.

pub const BLACK: Self

Pure black, fully opaque.

pub const TRANSPARENT: Self

Fully transparent black.

pub const INK_BLACK: Self

Darkest shade of the default 4-step ink ramp used for menu/text rendering (matches the historical InkColor::Black RGBA value).

pub const INK_DARK_GRAY: Self

Dark-gray shade of the default ink ramp.

pub const INK_LIGHT_GRAY: Self

Light-gray shade of the default ink ramp.

pub const INK_WHITE: Self

Lightest shade of the default ink ramp (paper background).

pub const fn new(r: u8, g: u8, b: u8, a: u8) -> Self

Create a colour from individual channel values.

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

Create an opaque colour from RGB values (alpha = 255).

pub const fn to_array(self) -> [u8; 4]

Return the channels as a flat [r, g, b, a] byte array.

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

Formats the value using the given formatter.

impl Default for Rgba

fn default() -> Self

Returns Rgba::TRANSPARENT.

impl Eq for Rgba

impl From<Rgba> for [u8; 4]

fn from(c: Rgba) -> Self

Converts to this type from the input type.

impl From<[u8; 4]> for Rgba

fn from(arr: [u8; 4]) -> Self

Convert a [r, g, b, a] byte array into an Rgba.

impl PartialEq for Rgba

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Rgba