Struct PageFontStats 

pub struct PageFontStats {
    pub dominant_em: f32,
    pub dominant_line_height: f32,
    pub dominant_char_width: f32,
    pub body_font_name: String,
}

Per-page font statistics. Computed in O(n) over the spans.

Fields

dominant_em: f32

Mode of font_size weighted by character count. The “1 em” for the page’s body text. Defaults to 12.0 on an empty page.

dominant_line_height: f32

Median baseline-to-baseline distance for adjacent same-column same-font spans. Approximates the page’s set leading. Defaults to 1.2 × dominant_em when fewer than two same-font spans are available to derive it.

dominant_char_width: f32

Average advance width per character in the dominant font. Used to convert “N characters wide” thresholds into points. Defaults to 0.5 × dominant_em (Helvetica’s per-em mean width).

body_font_name: String

Identifier of the font used by the largest share of characters on the page. Used by region-distinctness heuristics (caption vs body) to detect font-discontinuity boundaries.

Implementations

impl PageFontStats

pub fn from_spans(spans: &[TextSpan]) -> Self

Compute font statistics from a slice of spans.

Empty input → returns PageFontStats::default.

Trait Implementations

impl Clone for PageFontStats

fn clone(&self) -> PageFontStats

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for PageFontStats

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

Formats the value using the given formatter.

impl Default for PageFontStats

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for PageFontStats

fn eq(&self, other: &PageFontStats) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for PageFontStats