Enum Unit 

#[non_exhaustive]
pub enum Unit {
    Minutes,
    Days,
}

What a Track’s integers count.

Track::fraction never needed this – the arithmetic is the same whatever the numbers mean – which is exactly how the ruler came to assume minutes and print 00:00 over a month. A renderer drawing an axis has to write a label, and it cannot derive the unit from the numbers.

Added 2026-08-15, after a probe put a fifteen-day span on a thirty-one-slot track and got correct geometry under a wall clock.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Minutes

Minutes from the start of a day. A day view.

Days

Whole days. A month strip, a sprint, a stretch of leave.

A day-granularity axis is a strip, not a calendar: one line with spans laid along it. What it deliberately does not do is wrap into weeks, which is the shape that makes weekday periodicity visible and the one job of a month grid that a strip cannot take over. See the crate header.

Trait Implementations

impl Clone for Unit

fn clone(&self) -> Unit

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Unit

impl Debug for Unit

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

Formats the value using the given formatter.

impl Default for Unit

fn default() -> Unit

Returns the “default value” for a type.

impl Eq for Unit

impl Hash for Unit

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 Unit

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Unit