Struct BitmapSource 

pub struct BitmapSource { /* private fields */ }

The built-in five-by-seven font at whole-number scales.

Implementations

impl BitmapSource

pub fn new() -> Self

Wraps the built-in font.

Trait Implementations

impl Debug for BitmapSource

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

Formats the value using the given formatter.

impl Default for BitmapSource

fn default() -> Self

Returns the “default value” for a type.

impl GlyphSource for BitmapSource

fn name(&self) -> &str

Human-readable name, for logging which font a panel actually loaded.

fn metrics(&self, size_px: u16) -> FontMetrics

Vertical metrics at size_px.

fn glyph_id(&self, ch: char) -> Option<GlyphId>

The glyph a character maps to, or None if this source has none.

fn glyph_metrics( &mut self, glyph: GlyphId, size_px: u16, ) -> Option<GlyphMetrics>

Metrics for one glyph, without rasterising it.

fn rasterise(&mut self, glyph: GlyphId, size_px: u16) -> Option<Rasterised<'_>>

Rasterises one glyph.

fn contains(&self, ch: char) -> bool

Returns true if this source has a glyph of its own for ch, as opposed to a fallback box.

fn fallback_id(&self, ch: char) -> Option<GlyphId>

The glyph to draw for a character this source does not have.

fn snap_size(&self, size_px: u16) -> u16

Sizes this source can actually produce, or None if it is continuous.

fn shape(&mut self, text: &str, size_px: u16, out: &mut Vec<ShapedGlyph>) -> i32

Turns a string into positioned glyphs, appended to out.

fn can_shape(&self) -> bool

Returns true if this source lays out runs itself through shape, rather than one glyph per character.