[−][src]Struct rusttype::PositionedGlyph
A glyph augmented with positioning and scaling information. You can query such a glyph for information that depends on the scale and position of the glyph.
Methods
impl<'a> PositionedGlyph<'a>
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pub fn id(&self) -> GlyphId
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The glyph identifier for this glyph.
pub fn font(&self) -> Option<&Font<'a>>
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The font to which this glyph belongs. If the glyph is a standalone glyph that owns its resources,
it no longer has a reference to the font which it was created from (using standalone()
). In which
case, None
is returned.
pub fn unpositioned(&self) -> &ScaledGlyph<'a>
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A reference to this glyph without positioning
pub fn into_unpositioned(self) -> ScaledGlyph<'a>
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Removes the positioning from this glyph
pub fn pixel_bounding_box(&self) -> Option<Rect<i32>>
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The conservative pixel-boundary bounding box for this glyph. This is the smallest rectangle aligned to pixel boundaries that encloses the shape of this glyph at this position.
pub fn shape(&self) -> Option<Vec<Contour>>
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Similar to ScaledGlyph::shape()
, but with the position of the glyph taken into account.
pub fn scale(&self) -> Scale
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pub fn position(&self) -> Point<f32>
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pub fn draw<O: FnMut(u32, u32, f32)>(&self, o: O)
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Rasterises this glyph. For each pixel in the rect given by pixel_bounding_box()
, o
is called:
o(x, y, v)
where x
and y
are the coordinates of the pixel relative to the min
coordinates of the bounding box,
and v
is the analytically calculated coverage of the pixel by the shape of the glyph.
Calls to o
proceed in horizontal scanline order, similar to this pseudo-code:
let bb = glyph.pixel_bounding_box(); for y in 0..bb.height() { for x in 0..bb.width() { o(x, y, calc_coverage(&glyph, x, y)); } }
pub fn standalone(&self) -> PositionedGlyph<'static>
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Constructs a glyph that owns its data from this glyph. This is similar to Glyph::standalone
. See
that function for more details.
Trait Implementations
impl<'a> Clone for PositionedGlyph<'a>
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fn clone(&self) -> PositionedGlyph<'a>
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fn clone_from(&mut self, source: &Self)
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Auto Trait Implementations
impl<'a> Sync for PositionedGlyph<'a>
impl<'a> Send for PositionedGlyph<'a>
impl<'a> Unpin for PositionedGlyph<'a>
impl<'a> UnwindSafe for PositionedGlyph<'a>
impl<'a> RefUnwindSafe for PositionedGlyph<'a>
Blanket Implementations
impl<T, U> Into<U> for T where
U: From<T>,
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U: From<T>,
impl<T> ToOwned for T where
T: Clone,
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T: Clone,
type Owned = T
The resulting type after obtaining ownership.
fn to_owned(&self) -> T
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fn clone_into(&self, target: &mut T)
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impl<T> From<T> for T
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impl<T, U> TryFrom<U> for T where
U: Into<T>,
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U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>
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impl<T, U> TryInto<U> for T where
U: TryFrom<T>,
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U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>
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impl<T> BorrowMut<T> for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T> Borrow<T> for T where
T: ?Sized,
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T: ?Sized,
impl<T> Any for T where
T: 'static + ?Sized,
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T: 'static + ?Sized,