Struct Metrics 

pub struct Metrics {
    pub role: TextStyle,
    pub leading: f32,
    pub weight: FontWeight,
    pub scale: f32,
}

One role as it is actually set: a rung on the ladder, the leading it carries, and the weight it is set in.

Fields

role: TextStyle

leading: f32

Line height as a multiple of the painted size, so leading follows the type wherever set_base_text_size puts it.

weight: FontWeight

The ladder carries one bold cell, so a set needing several heading weights names its own here rather than reading it off the role.

scale: f32

A factor over the painted ladder, for one surface sized apart from the rest — a document the reader has zoomed. 1.0 is the ladder itself.

Implementations

impl Metrics

pub const fn new(role: TextStyle, leading: f32, weight: FontWeight) -> Self

pub const fn scaled(self, scale: f32) -> Self

The same metrics at scale times the ladder. Replaces rather than compounds, so a slider handing over an absolute factor cannot drift.

pub fn size(self) -> f32

pub fn line_height(self) -> f32

Trait Implementations

impl Clone for Metrics

fn clone(&self) -> Metrics

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Metrics

impl Debug for Metrics

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

Formats the value using the given formatter.

impl From<TextStyle> for Metrics

fn from(role: TextStyle) -> Self

The ladder’s own setting for a role: its measured leading and weight. A set that wants prose leading names its own through Metrics::new.

impl PartialEq for Metrics

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Metrics