Enum Font 

pub enum Font {
    LargeTitle,
    Title,
    Title2,
    Title3,
    Headline,
    Subheadline,
    Body,
    Callout,
    Footnote,
    Caption,
    Caption2,
    System(f64),
    Custom(&'static str, f64),
}

A semantic (logical) text style. Each maps to the PLATFORM’s native text style where the toolkit has one — UIFont/NSFont.preferredFont(forTextStyle:) on Apple (Dynamic Type), the *TextBlockStyle resources on XAML — so a Day app matches the OS’s own typography and inherits its accessibility text scaling for free. Backends without semantic styles (GTK/Qt/Android) approximate with sizes that still track the platform’s text-scale / font-scale accessibility setting.

The set mirrors SwiftUI Font.TextStyle (largest → smallest).

Variants

LargeTitle

Title

Title2

Title3

Headline

Subheadline

Body

Callout

Footnote

Caption

Caption2

System(f64)

A custom point size. Backends scale it by the platform’s accessibility text-scale (iOS via UIFontMetrics, Android via sp, GTK via text-scaling-factor) so it stays legible.

Custom(&'static str, f64)

A bundled custom font by family name, at a point size (Font::Custom("Pacifico", 24.0)). The family must ship in the project’s fonts/ directory — day build stages the file into each platform’s native font store and the backend registers it at startup (§18.4). The name is the family name baked into the font file (what Font Book / fontconfig report), not the file name. The size scales with the platform accessibility text-scale exactly like Font::System; weight/italic apply only where the family ships (or the platform synthesizes) such a face. An unknown family falls back to the system font of the same size, with a warning in the log.

Implementations

impl Font

pub const fn custom(family: FontFamily, size: f64) -> Font

A bundled custom font by typed family, at a point size — the checked form of Font::Custom. Pass a generated res::fonts::… constant (Font::custom(res::fonts::pacifico, 24.0)), which exists only if the family ships in the project’s fonts/ directory, so the font is guaranteed bundled. For a family name known another way, the untyped Font::Custom variant is the escape hatch.

Trait Implementations

impl Clone for Font

fn clone(&self) -> Font

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Font

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

Formats the value using the given formatter.

impl Default for Font

fn default() -> Font

Returns the “default value” for a type.

impl From<Font> for FontSpec

fn from(style: Font) -> Self

Converts to this type from the input type.

impl PartialEq for Font

fn eq(&self, other: &Font) -> 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 Copy for Font

impl StructuralPartialEq for Font