Struct Rgba8 

pub struct Rgba8 {
    pub r: u8,
    pub g: u8,
    pub b: u8,
    pub a: u8,
}

A simple 8-bit RGBA color.

Examples

use truss::Rgba8;

// Parse a 6-digit hex color (fully opaque)
let red = Rgba8::from_hex("ff0000").unwrap();
assert_eq!(red, Rgba8 { r: 255, g: 0, b: 0, a: 255 });

// Parse an 8-digit hex color with alpha
let semi = Rgba8::from_hex("00ff0080").unwrap();
assert_eq!(semi, Rgba8 { r: 0, g: 255, b: 0, a: 128 });

// Invalid input is rejected
assert!(Rgba8::from_hex("xyz").is_err());

Fields

r: u8

Red channel.

g: u8

Green channel.

b: u8

Blue channel.

a: u8

Alpha channel.

Implementations

impl Rgba8

pub fn from_hex(value: &str) -> Result<Self, String>

Parses a hexadecimal RGB or RGBA color string without a leading #.

Every rejection reads the same sentence, which names the shape truss accepts rather than repeating the value back. #ffffff is the spelling a caller reaches for first, since CSS, HTML, and every colour picker use it, and unsupported color \#ffffff`` gave them nothing to correct. Naming the rule is what every other option here does.

Trait Implementations

impl Clone for Rgba8

fn clone(&self) -> Rgba8

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Rgba8

impl Debug for Rgba8

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

Formats the value using the given formatter.

impl Eq for Rgba8

impl PartialEq for Rgba8

fn eq(&self, other: &Rgba8) -> bool

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Rgba8