Struct egui::FontDefinitions

pub struct FontDefinitions {
    pub font_data: BTreeMap<String, Cow<'static, [u8]>>,
    pub fonts_for_family: BTreeMap<FontFamily, Vec<String, Global>>,
    pub family_and_size: BTreeMap<TextStyle, (FontFamily, f32)>,
}

Describes the font data and the sizes to use.

Often you would start with FontDefinitions::default() and then add/change the contents.

let mut fonts = epaint::text::FontDefinitions::default();
// Large button text:
fonts.family_and_size.insert(
    epaint::text::TextStyle::Button,
    (epaint::text::FontFamily::Proportional, 32.0));

Fields

font_data: BTreeMap<String, Cow<'static, [u8]>>

List of font names and their definitions. The definition must be the contents of either a .ttf or .otf font file.

epaint has built-in-default for these, but you can override them if you like.

fonts_for_family: BTreeMap<FontFamily, Vec<String, Global>>

Which fonts (names) to use for each FontFamily.

The list should be a list of keys into Self::font_data. When looking for a character glyph epaint will start with the first font and then move to the second, and so on. So the first font is the primary, and then comes a list of fallbacks in order of priority.

family_and_size: BTreeMap<TextStyle, (FontFamily, f32)>

The FontFamily and size you want to use for a specific TextStyle.

Trait Implementations

impl Clone for FontDefinitions

pub fn clone(&self) -> FontDefinitions

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for FontDefinitions

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

Formats the value using the given formatter.

impl Default for FontDefinitions

pub fn default() -> FontDefinitions

Returns the "default value" for a type.

impl PartialEq<FontDefinitions> for FontDefinitions

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl StructuralPartialEq for FontDefinitions

impl Widget for &mut FontDefinitions

pub fn ui(self, ui: &mut Ui) -> Response

Allocate space, interact, paint, and return a Response.