Struct Keyframes 

pub struct Keyframes { /* private fields */ }

A declared @keyframes rule.

The rule is injected lazily — constructing a Keyframes costs nothing, and the stylesheet is only touched once something calls Keyframes::name, Keyframes::ensure, or formats the handle with {}.

static FADE: Keyframes = Keyframes::new("app-fade", "from{opacity:0;}to{opacity:1;}");

// `Display` registers, so composed shorthands work without ceremony:
el.style("animation", &format!("{FADE} 600ms ease-out both"));

Implementations

impl Keyframes

pub const fn new(name: &'static str, body: &'static str) -> Self

pub fn name(&self) -> &'static str

Injects the rule if it has not been injected yet, then returns the CSS keyframe name for use in an animation shorthand.

pub const fn name_unregistered(&self) -> &'static str

The keyframe name without injecting the rule.

Only useful in const contexts. If you are building an animation value at runtime, use Keyframes::name or {} formatting instead so the rule actually reaches the document.

pub const fn body(&self) -> &'static str

pub fn ensure(&self)

Injects the rule. Idempotent, and after the first call this is a single relaxed atomic load.

pub fn css(&self) -> String

The full rule text, for server-side rendering or debugging. Does not inject anything.

Trait Implementations

impl Display for Keyframes

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

Writes the keyframe name — and registers the rule as a side effect, so that format!("{KEYFRAMES} 1s linear") cannot produce a shorthand pointing at a rule that was never injected.