Struct egui::text::FontDefinitions

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pub struct FontDefinitions {
    pub font_data: BTreeMap<String, FontData, Global>,
    pub families: BTreeMap<FontFamily, Vec<String, Global>, Global>,
}
Expand description

Describes the font data and the sizes to use.

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

This is how you install your own custom fonts:

let mut fonts = FontDefinitions::default();

// Install my own font (maybe supporting non-latin characters):
fonts.font_data.insert("my_font".to_owned(),
   FontData::from_static(include_bytes!("../../fonts/Ubuntu-Light.ttf"))); // .ttf and .otf supported

// Put my font first (highest priority):
fonts.families.get_mut(&FontFamily::Proportional).unwrap()
    .insert(0, "my_font".to_owned());

// Put my font as last fallback for monospace:
fonts.families.get_mut(&FontFamily::Monospace).unwrap()
    .push("my_font".to_owned());

egui_ctx.set_fonts(fonts);

Fields§

§font_data: BTreeMap<String, FontData, Global>

List of font names and their definitions.

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

§families: BTreeMap<FontFamily, Vec<String, Global>, 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.

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Trait Implementations§

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impl Clone for FontDefinitions

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fn clone(&self) -> FontDefinitions

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for FontDefinitions

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

Formats the value using the given formatter. Read more
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impl Default for FontDefinitions

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fn default() -> FontDefinitions

Specifies the default fonts if the feature default_fonts is enabled, otherwise this is the same as Self::empty.

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impl PartialEq<FontDefinitions> for FontDefinitions

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

This method tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl StructuralPartialEq for FontDefinitions

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impl<T> Any for Twhere T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for Twhere T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for Twhere T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for Twhere U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> ToOwned for Twhere T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for Twhere U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for Twhere U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
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impl<T> SerializableAny for Twhere T: 'static + Any + Clone + Send + Sync,