# Struct OutlineGlyphCollection

    pub struct OutlineGlyphCollection<'a> { /* private fields */ }

Expand description

Collection of scalable glyph outlines.

## Implementations§

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### impl<'a> OutlineGlyphCollection<'a>

#### pub fn new(font: &FontRef<'a>) -> OutlineGlyphCollection<'a>

Creates a new outline collection for the given font.

#### pub fn with_format( font: &FontRef<'a>, format: OutlineGlyphFormat, ) -> Option<OutlineGlyphCollection<'a>>

Creates a new outline collection for the given font and outline format.

Returns `None` if the font does not contain outlines in the requested format.

#### pub fn format(&self) -> Option<OutlineGlyphFormat>

Returns the underlying format of the source outline tables.

#### pub fn get(&self, glyph_id: GlyphId) -> Option<OutlineGlyph<'a>>

Returns the outline for the given glyph identifier.

#### pub fn iter( &self, ) -> impl Iterator<Item = (GlyphId, OutlineGlyph<'a>)> + Clone + 'a

Returns an iterator over all of the outline glyphs in the collection.

#### pub fn prefer_interpreter(&self) -> bool

Returns true if the interpreter engine should be used for hinting this set of outlines.

When this returns false, you likely want to use the automatic hinter instead.

This matches the logic used in FreeType when neither of the `FT_LOAD_FORCE_AUTOHINT` or `FT_LOAD_NO_AUTOHINT` load flags are specified.

When setting `HintingOptions::engine` to `Engine::AutoFallback`, this is used to determine whether to use the interpreter or automatic hinter.

#### pub fn require_interpreter(&self) -> bool

Returns true when the interpreter engine must be used for hinting this set of outlines to produce correct results.

This corresponds so FreeType’s `FT_FACE_FLAG_TRICKY` face flag. See the documentation for that flag for more detail.

When this returns `true`, you should construct a `HintingInstance` with `HintingOptions::engine` set to `Engine::Interpreter` and `HintingOptions::target` set to `Target::Mono`.

##### §Performance

This digs through the name table and potentially computes checksums so it may be slow. You should cache the result of this function if possible.

#### pub fn fractional_size_hinting(&self) -> bool

Returns true when the font supports hinting at fractional sizes.

When this returns false, the requested size will be rounded before computing the scale factor for hinted glyphs.

## Trait Implementations§

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### impl<'a> Clone for OutlineGlyphCollection<'a>

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#### fn clone(&self) -> OutlineGlyphCollection<'a>

Returns a duplicate 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<'a> Debug for OutlineGlyphCollection<'a>

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

Formats the value using the given formatter. Read more

## Auto Trait Implementations§

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### impl<'a> Freeze for OutlineGlyphCollection<'a>

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### impl<'a> RefUnwindSafe for OutlineGlyphCollection<'a>

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### impl<'a> Send for OutlineGlyphCollection<'a>

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### impl<'a> Sync for OutlineGlyphCollection<'a>

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### impl<'a> Unpin for OutlineGlyphCollection<'a>

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### impl<'a> UnwindSafe for OutlineGlyphCollection<'a>

## Blanket Implementations§

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### impl<S, D, Swp, Dwp, T> AdaptInto<D, Swp, Dwp, T> for S
where T: Real + Zero + Arithmetics + Clone, Swp: WhitePoint<T>, Dwp: WhitePoint<T>, D: AdaptFrom<S, Swp, Dwp, T>,

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#### fn adapt_into_using<M>(self, method: M) -> D
where M: TransformMatrix<T>,

Convert the source color to the destination color using the specified method.
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#### fn adapt_into(self) -> D

Convert the source color to the destination color using the bradford method by default.
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### impl<T> Also for T

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#### fn also<F>(self, block: F) -> Self
where F: FnOnce(&mut Self),

Apply a function to this value and return the (possibly) modified value.
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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, Res> Apply<Res> for T
where T: ?Sized,

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#### fn apply<F>(self, f: F) -> Res
where F: FnOnce(Self) -> Res, Self: Sized,

Apply a function which takes the parameter by value.
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#### fn apply_ref<F>(&self, f: F) -> Res
where F: FnOnce(&Self) -> Res,

Apply a function which takes the parameter by reference.
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#### fn apply_mut<F>(&mut self, f: F) -> Res
where F: FnOnce(&mut Self) -> Res,

Apply a function which takes the parameter by mutable reference.
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### impl<T, C> ArraysFrom<C> for T
where C: IntoArrays<T>,

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#### fn arrays_from(colors: C) -> T

Cast a collection of colors into a collection of arrays.
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### impl<T, C> ArraysInto<C> for T
where C: FromArrays<T>,

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#### fn arrays_into(self) -> C

Cast this collection of arrays into a collection of colors.
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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<WpParam, T, U> Cam16IntoUnclamped<WpParam, T> for U
where T: FromCam16Unclamped<WpParam, U>,

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#### type Scalar = <T as FromCam16Unclamped<WpParam, U>>::Scalar

The number type that’s used in `parameters` when converting.
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#### fn cam16_into_unclamped( self, parameters: BakedParameters<WpParam, <U as Cam16IntoUnclamped<WpParam, T>>::Scalar>, ) -> T

Converts `self` into `C`, using the provided parameters.
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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, C> ComponentsFrom<C> for T
where C: IntoComponents<T>,

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#### fn components_from(colors: C) -> T

Cast a collection of colors into a collection of color components.
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where T: Any,

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#### fn into_any(self: Box<T>) -> Box<dyn Any>

Convert `Box<dyn Trait>` (where `Trait: Downcast`) to `Box<dyn Any>`. `Box<dyn Any>` can then be further `downcast` into `Box<ConcreteType>` where `ConcreteType` implements `Trait`.
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Convert `Rc<Trait>` (where `Trait: Downcast`) to `Rc<Any>`. `Rc<Any>` can then be further `downcast` into `Rc<ConcreteType>` where `ConcreteType` implements `Trait`.
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#### fn as_any(&self) -> &(dyn Any + 'static)

Convert `&Trait` (where `Trait: Downcast`) to `&Any`. This is needed since Rust cannot generate `&Any`’s vtable from `&Trait`’s.
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#### fn as_any_mut(&mut self) -> &mut (dyn Any + 'static)

Convert `&mut Trait` (where `Trait: Downcast`) to `&Any`. This is needed since Rust cannot generate `&mut Any`’s vtable from `&mut Trait`’s.
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where T: Any + Send + Sync,

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#### fn from(t: T) -> T

Returns the argument unchanged.

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Performs a conversion from `angle`.
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where U: IntoStimulus<T>,

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#### fn from_stimulus(other: U) -> T

Converts `other` into `Self`, while performing the appropriate scaling, rounding and clamping.
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Instruments this type with the provided [`Span`], returning an `Instrumented` wrapper. Read more
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Calls `U::from(self)`.

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

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Performs a conversion into `T`.
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Turns some type into the initial state of some `Application`.
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### impl<WpParam, T, U> IntoCam16Unclamped<WpParam, T> for U
where T: Cam16FromUnclamped<WpParam, U>,

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#### type Scalar = <T as Cam16FromUnclamped<WpParam, U>>::Scalar

The number type that’s used in `parameters` when converting.
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#### fn into_cam16_unclamped( self, parameters: BakedParameters<WpParam, <U as IntoCam16Unclamped<WpParam, T>>::Scalar>, ) -> T

Converts `self` into `C`, using the provided parameters.
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### impl<T, U> IntoColor<U> for T
where U: FromColor<T>,

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#### fn into_color(self) -> U

Convert into T with values clamped to the color defined bounds Read more
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### impl<T, U> IntoColorUnclamped<U> for T
where U: FromColorUnclamped<T>,

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#### fn into_color_unclamped(self) -> U

Convert into T. The resulting color might be invalid in its color space Read more
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### impl<T> IntoStimulus<T> for T

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#### fn into_stimulus(self) -> T

Converts `self` into `T`, while performing the appropriate scaling, rounding and clamping.
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#### type Output = T

Should always be `Self`
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#### type Owned = T

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Creates owned data from borrowed data, usually by cloning. Read more
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Uses borrowed data to replace owned data, usually by cloning. Read more
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### impl<T, C> TryComponentsInto<C> for T
where C: TryFromComponents<T>,

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#### type Error = <C as TryFromComponents<T>>::Error

The error for when `try_into_colors` fails to cast.
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#### fn try_components_into(self) -> Result<C, <T as TryComponentsInto<C>>::Error>

Try to cast this collection of color components into a collection of colors. Read more
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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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Performs the conversion.
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The type returned in the event of a conversion error.
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Performs the conversion.
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### impl<T, U> TryIntoColor<U> for T
where U: TryFromColor<T>,

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#### fn try_into_color(self) -> Result<U, OutOfBounds<U>>

Convert into T, returning ok if the color is inside of its defined range, otherwise an `OutOfBounds` error is returned which contains the unclamped color. Read more
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### impl<C, U> UintsFrom<C> for U
where C: IntoUints<U>,

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#### fn uints_from(colors: C) -> U

Cast a collection of colors into a collection of unsigned integers.
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### impl<C, U> UintsInto<C> for U
where C: FromUints<U>,

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#### fn uints_into(self) -> C

Cast this collection of unsigned integers into a collection of colors.
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where V: MultiLane<T>,

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#### fn vzip(self) -> V

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where S: Into<Dispatch>,

Attaches the provided `Subscriber` to this type, returning a [`WithDispatch`] wrapper. Read more
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