Struct Stagger 

pub struct Stagger { /* private fields */ }

Delays each item in a list so a group animates as a wave.

The total is capped so a long list stays responsive: past max_items the per-item delay shrinks instead of the sequence growing without bound.

Implementations

impl Stagger

pub fn new(step: Duration, max_items: usize) -> Self

pub fn from_millis(step_ms: u64) -> Self

pub fn rows() -> Self

The wave a list of menu-shaped rows arrives on.

Sixteen milliseconds a row across at most eight rows, so the last row in a fifty-row menu starts 112ms after the first rather than a second later: past eight rows the step shrinks to keep the window fixed.

pub fn max_items(self, max_items: usize) -> Self

pub fn reversed(self) -> Self

Runs the wave from the last item to the first.

This is the order a list leaves on. A list that arrived from the top down should depart from the bottom up, so the row the user is looking at — the one they just acted on, at the top — is the last to go rather than the first, and the group empties away from them instead of out from under them.

pub fn is_reversed(&self) -> bool

pub fn delay(&self, index: usize, count: usize) -> Duration

pub fn total(&self, count: usize, spec: MotionSpec) -> Duration

The window the whole group occupies, including the last item’s span.

Reversing changes which item waits longest, not how long the group takes, so the window is measured from the furthest place rather than from the last index.

pub fn spec(&self, index: usize, count: usize, spec: MotionSpec) -> MotionSpec

Applies the delay for one item to a spec.

Trait Implementations

impl Clone for Stagger

fn clone(&self) -> Stagger

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Stagger

impl Debug for Stagger

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

Formats the value using the given formatter.

impl PartialEq for Stagger

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Stagger