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FontMetrics

pdf_engine::text

Struct FontMetrics 

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pub struct FontMetrics {
    pub ascent: f64,
    pub descent: f64,
    pub cap_height: Option<f64>,
    pub x_height: Option<f64>,
}
Expand description

Vertical font metrics in /1000 em (1000 units-per-em), sourced from the embedded font’s OS/2 / hhea tables via skrifa. ascent is positive (above the baseline); descent is negative (below it). The whole struct is None on a span when no embedded font binary exposes metrics (non-embedded standard-14, CFF, Type1, Type3).

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§ascent: f64

Ascent above the baseline, in /1000 em.

§descent: f64

Descent below the baseline (negative), in /1000 em.

§cap_height: Option<f64>

Cap height in /1000 em, when present in the font.

§x_height: Option<f64>

x-height in /1000 em, when present in the font.

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impl Clone for FontMetrics

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fn clone(&self) -> FontMetrics

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for FontMetrics

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impl Debug for FontMetrics

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

Formats the value using the given formatter. Read more
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impl Default for FontMetrics

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fn default() -> FontMetrics

Returns the “default value” for a type. Read more
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impl PartialEq for FontMetrics

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 (const: unstable) · Source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for FontMetrics

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl StructuralPartialEq for FontMetrics

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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