[−][src]Struct glyph_brush::GlyphBrushBuilder
Builder for a GlyphBrush
.
Example
use glyph_brush::{GlyphBrush, GlyphBrushBuilder}; let dejavu: &[u8] = include_bytes!("../../../fonts/DejaVuSans.ttf"); let mut glyph_brush: GlyphBrush<'_, Vertex> = GlyphBrushBuilder::using_font_bytes(dejavu).build();
Fields
font_data: Vec<Font<'a>>
initial_cache_size: (u32, u32)
gpu_cache_scale_tolerance: f32
gpu_cache_position_tolerance: f32
cache_glyph_positioning: bool
cache_glyph_drawing: bool
section_hasher: H
Methods
impl<'a> GlyphBrushBuilder<'a>
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pub fn using_font_bytes<B: Into<SharedBytes<'a>>>(font_0_data: B) -> Self
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Specifies the default font data used to render glyphs.
Referenced with FontId(0)
, which is default.
pub fn using_fonts_bytes<B, V>(font_data: V) -> Self where
B: Into<SharedBytes<'a>>,
V: Into<Vec<B>>,
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B: Into<SharedBytes<'a>>,
V: Into<Vec<B>>,
pub fn using_font(font_0: Font<'a>) -> Self
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Specifies the default font used to render glyphs.
Referenced with FontId(0)
, which is default.
pub fn using_fonts<V: Into<Vec<Font<'a>>>>(fonts: V) -> Self
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impl<'a, H: BuildHasher> GlyphBrushBuilder<'a, H>
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pub fn add_font_bytes<B: Into<SharedBytes<'a>>>(
&mut self,
font_data: B
) -> FontId
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&mut self,
font_data: B
) -> FontId
Adds additional fonts to the one added in using_font
/
using_font_bytes
.
Returns a FontId
to reference this font.
pub fn add_font(&mut self, font_data: Font<'a>) -> FontId
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Adds additional fonts to the one added in using_font
/
using_font_bytes
.
Returns a FontId
to reference this font.
pub fn initial_cache_size(self, size: (u32, u32)) -> Self
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Initial size of 2D texture used as a gpu cache, pixels (width, height). The GPU cache will dynamically quadruple in size whenever the current size is insufficient.
Defaults to (256, 256)
pub fn gpu_cache_scale_tolerance(self, tolerance: f32) -> Self
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Sets the maximum allowed difference in scale used for judging whether to reuse an existing glyph in the GPU cache.
Defaults to 0.5
See rusttype docs for rusttype::gpu_cache::Cache
pub fn gpu_cache_position_tolerance(self, tolerance: f32) -> Self
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Sets the maximum allowed difference in subpixel position used for judging whether to reuse an existing glyph in the GPU cache. Anything greater than or equal to 1.0 means "don't care".
Defaults to 0.1
See rusttype docs for rusttype::gpu_cache::Cache
pub fn cache_glyph_positioning(self, cache: bool) -> Self
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Sets whether perform the calculation of glyph positioning according to the layout
every time, or use a cached result if the input Section
and GlyphPositioner
are the
same hash as a previous call.
Improves performance. Should only disable if using a custom GlyphPositioner that is
impure according to it's inputs, so caching a previous call is not desired. Disabling
also disables cache_glyph_drawing
.
Defaults to true
pub fn cache_glyph_drawing(self, cache: bool) -> Self
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Sets optimising drawing by reusing the last draw requesting an identical draw queue.
Improves performance. Is disabled if
cache_glyph_positioning
is disabled.
Defaults to true
pub fn section_hasher<T: BuildHasher>(
self,
section_hasher: T
) -> GlyphBrushBuilder<'a, T>
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self,
section_hasher: T
) -> GlyphBrushBuilder<'a, T>
Sets the section hasher. GlyphBrush
cannot handle absolute section hash collisions
so use a good hash algorithm.
This hasher is used to distinguish sections, rather than for hashmap internal use.
Defaults to xxHash.
Example
GlyphBrushBuilder::using_font_bytes(some_font) .section_hasher(SomeOtherBuildHasher::default()) // ...
pub fn build<V: Clone + 'static>(self) -> GlyphBrush<'a, V, H>
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Builds a GlyphBrush
using the input gfx factory
Auto Trait Implementations
impl<'a, H> Send for GlyphBrushBuilder<'a, H> where
H: Send,
H: Send,
impl<'a, H> Sync for GlyphBrushBuilder<'a, H> where
H: Sync,
H: Sync,
Blanket Implementations
impl<T> From for T
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impl<T, U> Into for T where
U: From<T>,
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U: From<T>,
impl<T, U> TryFrom for T where
U: Into<T>,
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U: Into<T>,
type Error = !
try_from
)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> Borrow 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,
impl<T> BorrowMut for T where
T: ?Sized,
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T: ?Sized,
fn borrow_mut(&mut self) -> &mut T
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impl<T, U> TryInto for T where
U: TryFrom<T>,
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U: TryFrom<T>,