[−][src]Trait glyph_brush::GlyphCruncher

pub trait GlyphCruncher<'font> {
    fn pixel_bounds_custom_layout<'a, S, L>(
        &mut self, 
        section: S, 
        custom_layout: &L
    ) -> Option<Rect<i32>>
    where
        L: GlyphPositioner + Hash,
        S: Into<Cow<'a, VariedSection<'a>>>;

    fn glyphs_custom_layout<'a, 'b, S, L>(
        &'b mut self, 
        section: S, 
        custom_layout: &L
    ) -> PositionedGlyphIter<'b, 'font>
    where
        L: GlyphPositioner + Hash,
        S: Into<Cow<'a, VariedSection<'a>>>;

    fn fonts(&self) -> &[Font<'font>];

    fn pixel_bounds<'a, S>(&mut self, section: S) -> Option<Rect<i32>>
    where
        S: Into<Cow<'a, VariedSection<'a>>>,
    { ... }

    fn glyphs<'a, 'b, S>(
        &'b mut self, 
        section: S
    ) -> PositionedGlyphIter<'b, 'font>
    where
        S: Into<Cow<'a, VariedSection<'a>>>,
    { ... }
}

Common glyph layout logic.

Required methods

fn pixel_bounds_custom_layout<'a, S, L>(
    &mut self,
    section: S,
    custom_layout: &L
) -> Option<Rect<i32>> where
    L: GlyphPositioner + Hash,
    S: Into<Cow<'a, VariedSection<'a>>>, 

Returns the pixel bounding box for the input section using a custom layout. The box is a conservative whole number pixel rectangle that can contain the section.

If the section is empty or would result in no drawn glyphs will return None

Benefits from caching, see caching behaviour.

fn glyphs_custom_layout<'a, 'b, S, L>(
    &'b mut self,
    section: S,
    custom_layout: &L
) -> PositionedGlyphIter<'b, 'font> where
    L: GlyphPositioner + Hash,
    S: Into<Cow<'a, VariedSection<'a>>>, 

Returns an iterator over the PositionedGlyphs of the given section with a custom layout.

Benefits from caching, see caching behaviour.

ⓘImportant traits for &'a mut [u8]
fn fonts(&self) -> &[Font<'font>]

Returns the available fonts.

The FontId corresponds to the index of the font data.

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Provided methods

fn pixel_bounds<'a, S>(&mut self, section: S) -> Option<Rect<i32>> where
    S: Into<Cow<'a, VariedSection<'a>>>, 

Returns the pixel bounding box for the input section. The box is a conservative whole number pixel rectangle that can contain the section.

If the section is empty or would result in no drawn glyphs will return None

Benefits from caching, see caching behaviour.

fn glyphs<'a, 'b, S>(&'b mut self, section: S) -> PositionedGlyphIter<'b, 'font> where
    S: Into<Cow<'a, VariedSection<'a>>>, 

Returns an iterator over the PositionedGlyphs of the given section.

Benefits from caching, see caching behaviour.

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Implementors

impl<'font, H: BuildHasher, '_> GlyphCruncher<'font> for GlyphCalculatorGuard<'_, 'font, H>[src]

fn pixel_bounds<'a, S>(&mut self, section: S) -> Option<Rect<i32>> where
    S: Into<Cow<'a, VariedSection<'a>>>, [src]

fn glyphs<'a, 'b, S>(&'b mut self, section: S) -> PositionedGlyphIter<'b, 'font> where
    S: Into<Cow<'a, VariedSection<'a>>>, [src]

impl<'font, V: Clone + 'static, H: BuildHasher> GlyphCruncher<'font> for GlyphBrush<'font, V, H>[src]

fn pixel_bounds<'a, S>(&mut self, section: S) -> Option<Rect<i32>> where
    S: Into<Cow<'a, VariedSection<'a>>>, [src]

fn glyphs<'a, 'b, S>(&'b mut self, section: S) -> PositionedGlyphIter<'b, 'font> where
    S: Into<Cow<'a, VariedSection<'a>>>, [src]

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