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FontOrRef

azul_layout::text3::cache

Enum FontOrRef 

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pub enum FontOrRef<T> {
    Font(T),
    Ref(FontRef),
}
Expand description

Enum that wraps either a fontconfig-resolved font (T) or a direct FontRef.

This allows the shaping code to handle both fontconfig-resolved fonts and embedded fonts (FontRef) uniformly through the ParsedFontTrait interface.

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Font(T)

A font loaded via fontconfig

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Ref(FontRef)

A direct FontRef (embedded font, bypasses fontconfig)

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impl<T: Clone> Clone for FontOrRef<T>

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fn clone(&self) -> FontOrRef<T>

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl<T: Debug> Debug for FontOrRef<T>

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

Formats the value using the given formatter. Read more
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impl<T: ParsedFontTrait> ParsedFontTrait for FontOrRef<T>

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fn shape_text( &self, text: &str, script: Script, language: Language, direction: BidiDirection, style: &StyleProperties, ) -> Result<Vec<Glyph>, LayoutError>

Shape the given text into a sequence of glyphs using the font’s shaping tables.
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fn get_hash(&self) -> u64

Hash of the font, necessary for breaking layouted glyphs into glyph runs
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fn get_glyph_size(&self, glyph_id: u16, font_size: f32) -> Option<LogicalSize>

Returns the size of a glyph at the given font size, or None if the glyph is missing.
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fn get_hyphen_glyph_and_advance(&self, font_size: f32) -> Option<(u16, f32)>

Returns the glyph ID and horizontal advance of the hyphen character at the given font size.
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fn get_kashida_glyph_and_advance(&self, font_size: f32) -> Option<(u16, f32)>

Returns the glyph ID and horizontal advance of the kashida (tatweel) character.
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fn has_glyph(&self, codepoint: u32) -> bool

Returns whether the font contains a glyph for the given Unicode codepoint.
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fn get_vertical_metrics(&self, glyph_id: u16) -> Option<VerticalMetrics>

Returns vertical metrics (ascent, descent, line gap) for a specific glyph.
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fn get_font_metrics(&self) -> LayoutFontMetrics

Returns the global font metrics (ascent, descent, units per em, etc.).
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fn num_glyphs(&self) -> u16

Returns the total number of glyphs in the font.
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fn get_space_width(&self) -> Option<usize>

Returns the advance width of the space character (U+0020) in font units, or None if the font doesn’t have a space glyph.
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impl<T: ParsedFontTrait> ShallowClone for FontOrRef<T>

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fn shallow_clone(&self) -> Self

Create a shallow clone (increment reference count, don’t copy data)

Auto Trait Implementations§

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impl<T> Freeze for FontOrRef<T>
where T: Freeze,

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impl<T> RefUnwindSafe for FontOrRef<T>
where T: RefUnwindSafe,

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impl<T> Send for FontOrRef<T>
where T: Send,

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impl<T> Sync for FontOrRef<T>
where T: Sync,

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impl<T> Unpin for FontOrRef<T>
where T: Unpin,

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impl<T> UnsafeUnpin for FontOrRef<T>
where T: UnsafeUnpin,

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impl<T> UnwindSafe for FontOrRef<T>
where T: UnwindSafe,

Blanket Implementations§

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impl<T> Any for T
where 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 T
where 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 T
where 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> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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 T
where 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> IntoEither for T

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fn into_either(self, into_left: bool) -> Either<Self, Self>

Converts self into a Left variant of Either<Self, Self> if into_left is true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
where F: FnOnce(&Self) -> bool,

Converts self into a Left variant of Either<Self, Self> if into_left(&self) returns true. Converts self into a Right variant of Either<Self, Self> otherwise. Read more
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impl<T> Pointable for T

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const ALIGN: usize

The alignment of pointer.
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type Init = T

The type for initializers.
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unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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impl<T> ToOwned for T
where 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 T
where 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 T
where 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.