Struct kas_text::fonts::FaceRef

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pub struct FaceRef(_);

Expand description

Handle to a loaded font face

Implementations

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impl FaceRef

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pub fn glyph_index(&self, c: char) -> GlyphId

Get glyph identifier for a char

If the char is not found, GlyphId(0) is returned (the ‘missing glyph’ representation).

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pub fn dpu(self, dpem: f32) -> DPU

Convert dpem to dpu

Output: a font-specific scale.

Input: dpem is pixels/em

dpem
  = pt_size × dpp
  = pt_size × dpi / 72
  = pt_size × scale_factor × (96 / 72)

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pub fn scale_by_dpem(self, dpem: f32) -> ScaledFaceRef

Get a scaled reference

Units: dpem is dots (pixels) per Em (module documentation).

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pub fn scale_by_dpu(self, dpu: DPU) -> ScaledFaceRef

Get a scaled reference

Units: dpu is dots (pixels) per font-unit (see module documentation).

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pub fn height(&self, dpem: f32) -> f32

Get the height of horizontal text in pixels

Units: dpem is dots (pixels) per Em (module documentation).

Trait Implementations

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impl Clone for FaceRef

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fn clone(&self) -> FaceRef

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 FaceRef

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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 Copy for FaceRef

Auto Trait Implementations

impl RefUnwindSafe for FaceRef

impl Send for FaceRef

impl Sync for FaceRef

impl Unpin for FaceRef

impl UnwindSafe for FaceRef

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,

const: unstable · source

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,

const: unstable · source

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

Mutably borrows from an owned value. Read more

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impl<S, T> Cast<T> for S where
T: Conv<S>,

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fn cast(self) -> T

Cast from Self to T Read more

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fn try_cast(self) -> Result<T, Error>

Try converting from Self to T Read more

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impl<S, T> CastApprox<T> for S where
T: ConvApprox<S>,

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fn try_cast_approx(self) -> Result<T, Error>

Try approximate conversion from Self to T Read more

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fn cast_approx(self) -> T

Cast approximately from Self to T Read more

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impl<S, T> CastFloat<T> for S where
T: ConvFloat<S>,

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fn cast_trunc(self) -> T

Cast to integer, truncating Read more

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fn cast_nearest(self) -> T

Cast to the nearest integer Read more

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fn cast_floor(self) -> T

Cast the floor to an integer Read more

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fn cast_ceil(self) -> T

Cast the ceiling to an integer Read more

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fn try_cast_trunc(self) -> Result<T, Error>

Try converting to integer with truncation Read more

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fn try_cast_nearest(self) -> Result<T, Error>

Try converting to the nearest integer Read more

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fn try_cast_floor(self) -> Result<T, Error>

Try converting the floor to an integer Read more

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fn try_cast_ceil(self) -> Result<T, Error>

Try convert the ceiling to an integer Read more

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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

const: unstable · source

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 T where
T: Clone,

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 for T where
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for T where
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source

fn try_into(self) -> Result<U, >::Error>

Performs the conversion.

Struct kas_text::fonts::FaceRef

Implementations

impl FaceRef

pub fn glyph_index(&self, c: char) -> GlyphId

pub fn dpu(self, dpem: f32) -> DPU

pub fn scale_by_dpem(self, dpem: f32) -> ScaledFaceRef

pub fn scale_by_dpu(self, dpu: DPU) -> ScaledFaceRef

pub fn height(&self, dpem: f32) -> f32

Trait Implementations

impl Clone for FaceRef

fn clone(&self) -> FaceRef

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

impl Debug for FaceRef

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

impl Copy for FaceRef

Auto Trait Implementations

impl RefUnwindSafe for FaceRef

impl Send for FaceRef

impl Sync for FaceRef

impl Unpin for FaceRef

impl UnwindSafe for FaceRef

Blanket Implementations

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

fn type_id(&self) -> TypeId

impl<T> Borrow<T> for T where T: ?Sized,

fn borrow(&self) -> &T

impl<T> BorrowMut<T> for T where T: ?Sized,

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

impl<S, T> Cast<T> for S where T: Conv<S>,

fn cast(self) -> T

fn try_cast(self) -> Result<T, Error>

impl<S, T> CastApprox<T> for S where T: ConvApprox<S>,

fn try_cast_approx(self) -> Result<T, Error>

fn cast_approx(self) -> T

impl<S, T> CastFloat<T> for S where T: ConvFloat<S>,

fn cast_trunc(self) -> T

fn cast_nearest(self) -> T

fn cast_floor(self) -> T

fn cast_ceil(self) -> T

fn try_cast_trunc(self) -> Result<T, Error>

fn try_cast_nearest(self) -> Result<T, Error>

fn try_cast_floor(self) -> Result<T, Error>

fn try_cast_ceil(self) -> Result<T, Error>

impl<T> From<T> for T

fn from(t: T) -> T

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

fn into(self) -> U

impl<T> ToOwned for T where T: Clone,

type Owned = T

fn to_owned(&self) -> T

fn clone_into(&self, target: &mut T)

impl<T, U> TryFrom<U> for T where U: Into<T>,

type Error = Infallible

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

impl<T, U> TryInto<U> for T where U: TryFrom<T>,

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

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

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

impl<T> Borrow<T> for T where
T: ?Sized,

impl<T> BorrowMut<T> for T where
T: ?Sized,

impl<S, T> Cast<T> for S where
T: Conv<S>,

impl<S, T> CastApprox<T> for S where
T: ConvApprox<S>,

impl<S, T> CastFloat<T> for S where
T: ConvFloat<S>,

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

impl<T> ToOwned for T where
T: Clone,

impl<T, U> TryFrom<U> for T where
U: Into<T>,

impl<T, U> TryInto<U> for T where
U: TryFrom<T>,