Struct Color 

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

An 8-bit-per-channel RGBA color value.

A plain color value (fill / text / box color), independent of any colorimetry metadata (ColorSpace et al.). a is the alpha channel: 255 = opaque, 0 = fully transparent.

Fields

r: u8

Red channel (0–255).

g: u8

Green channel (0–255).

b: u8

Blue channel (0–255).

a: u8

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

Implementations

impl Color

pub const WHITE: Self

Opaque white.

pub const BLACK: Self

Opaque black.

pub const TRANSPARENT: Self

Fully transparent (black with zero alpha).

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

Creates an opaque color (a = 255).

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

Creates a color with an explicit alpha channel.

pub fn parse_ffmpeg(s: &str) -> Option<Self>

Parses an FFmpeg colour string, as -vf drawbox=color=... and friends accept it.

Recognised forms:

• #RRGGBB / #RRGGBBAA and 0xRRGGBB / 0xRRGGBBAA
• a colour name, matched case-insensitively ("green", "DarkOrchid")
• either of the above with an @alpha suffix, where alpha is a float in 0.0..=1.0 or a two-digit 0xAA

Returns None for anything else, including FFmpeg’s random — it has no fixed value, so there is nothing to return.

Alpha defaults to opaque when the form does not carry one.

pub fn ffmpeg_color_names() -> impl ExactSizeIterator<Item = (&'static str, Self)>

Every colour name parse_ffmpeg accepts, with its value, in ascending name order.

Lets a host offer the same palette FFmpeg understands (a colour picker, an autocomplete), and it is what crates/ff-filter/tests/color_parse_reference_tests.rs walks to re-check every row against the linked FFmpeg.

Trait Implementations

impl Clone for Color

fn clone(&self) -> Color

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Color

impl Debug for Color

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Color

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for Color

impl Hash for Color

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 PartialEq for Color

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for Color

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Color