Struct Scale 

pub struct Scale(/* private fields */);

A logical→physical scale factor (DPI) for one region. Strictly positive by construction: a zero or negative factor would make the resolution math degenerate (every resolved radius collapses to 0), so Self::new floors it at the smallest positive f32.

This guards only against zero/negative. A near-zero (sub-pixel) factor is almost always an uninitialized-DPI caller bug that this type does not catch, so a backend should not read factor() > 0 as “meaningfully large”.

Implementations

impl Scale

pub fn new(factor: f32) -> Self

Construct from a factor, flooring at the smallest positive f32.

pub fn factor(self) -> f32

The scale factor (always > 0).

Trait Implementations

impl Clone for Scale

fn clone(&self) -> Scale

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Scale

impl Debug for Scale

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

Formats the value using the given formatter.

impl Default for Scale

fn default() -> Self

1 physical pixel per logical point.

impl PartialEq for Scale

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Scale