Struct FontFamilyBuilder 

pub struct FontFamilyBuilder { /* private fields */ }

Builder for composing multiple font families

This builder allows you to add multiple font families and their weights, then install them all at once into the egui context. This is more efficient and safer than calling load_font_family multiple times.

Example

use armas_basic::fonts::FontFamilyBuilder;
use eframe::egui;

fn setup(ctx: &egui::Context) {
    let mut builder = FontFamilyBuilder::new();

    builder.add_family(
        "Inter",
        include_bytes!("../../fonts/Inter-Regular.ttf"),
        Some(include_bytes!("../../fonts/Inter-Medium.ttf")),
        Some(include_bytes!("../../fonts/Inter-SemiBold.ttf")),
        Some(include_bytes!("../../fonts/Inter-Bold.ttf")),
    );

    // Install and set Inter as default
    builder.install(ctx, true);
}

Implementations

impl FontFamilyBuilder

pub fn new() -> Self

Create a new font family builder

pub fn add_family( &mut self, family_name: &str, regular: &'static [u8], medium: Option<&'static [u8]>, semibold: Option<&'static [u8]>, bold: Option<&'static [u8]>, ) -> &mut Self

Add a font family with multiple weights

Naming Convention

Fonts are registered with the following names:

• Regular: {family_name} (e.g., “Inter”)
• Medium: {family_name}Medium (e.g., “InterMedium”)
• SemiBold: {family_name}SemiBold (e.g., “InterSemiBold”)
• Bold: {family_name}Bold (e.g., “InterBold”)

pub fn set_default(&mut self, family_name: &str) -> &mut Self

Set which family should be the default proportional font

pub fn install(self, ctx: &Context, set_as_default: bool)

Install the fonts into the egui context

This merges with existing font definitions, preserving egui’s default fonts.

Arguments

• ctx - The egui context (use from CreationContext or before first frame)
• set_as_default - If true, sets the first added family as default proportional font

pub fn build(self) -> FontDefinitions

Build FontDefinitions without installing to context

Useful if you want to customize further before applying.

Trait Implementations

impl Default for FontFamilyBuilder

fn default() -> Self

Returns the “default value” for a type.