Struct FontContext 

pub struct FontContext { /* private fields */ }

Shared font context used by layout and PDF serialization. Provides text measurement with real glyph metrics.

Implementations

impl FontContext

pub fn new() -> Self

pub fn sentinel_digit_count(&self) -> u32

Get the current sentinel digit count.

pub fn set_sentinel_digit_count(&mut self, count: u32)

Set the number of digits used to measure page number sentinel width.

pub fn char_width( &self, ch: char, family: &str, weight: u32, italic: bool, font_size: f64, ) -> f64

Get the advance width of a single character in points.

When family contains a comma (font fallback chain), resolves the best font for this specific character before measuring.

pub fn measure_string( &self, text: &str, family: &str, weight: u32, italic: bool, font_size: f64, letter_spacing: f64, ) -> f64

Measure the width of a string in points.

pub fn resolve(&self, family: &str, weight: u32, italic: bool) -> &FontData

Resolve a font key to its font data.

pub fn registry(&self) -> &FontRegistry

Access the underlying font registry.

pub fn registry_mut(&mut self) -> &mut FontRegistry

Access the underlying font registry mutably.

pub fn font_data( &self, family: &str, weight: u32, italic: bool, ) -> Option<&[u8]>

Get the raw font data bytes for a custom font. Returns None for standard fonts or if the font isn’t found.

pub fn units_per_em(&self, family: &str, weight: u32, italic: bool) -> u16

Get the units-per-em for a font. Returns 1000 for standard fonts.

Trait Implementations

impl Default for FontContext

fn default() -> Self

Returns the “default value” for a type.