Struct Step 

pub struct Step {
    pub value: f64,
    pub warnings: Vec<String>,
}

The per-line fraction (and the warnings from sizing it) the AX scroll-bar fallback uses.

value is in 0..=1 and means “this much of the bar a wheel line moves.” warnings carries APPROXIMATED_WARNING when the size data was missing and CONTENT_FITS_WARNING when the document already fits inside the visible viewport. A clean measurement has no warnings.

Fields

value: f64

Per-line fraction of the bar (0..=1).

warnings: Vec<String>

Non-fatal sizing notes. Empty on a clean measurement.

Implementations

impl Step

pub const fn measured(value: f64) -> Self

A measured step with no warnings.

pub const fn approx() -> Self

The fallback step the legacy step_per_line(None) produced: five percent, no warnings. Used by callers that have no sizing data and want the same step the old approximation delivered.

Trait Implementations

impl Clone for Step

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Step

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

Formats the value using the given formatter.

impl PartialEq for Step

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Step