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TextMeasure

Struct TextMeasure 

Source
pub struct TextMeasure {
Show 16 fields pub content: String, pub size_px: f32, pub alignment: Alignment, pub italic: bool, pub font_family: Option<String>, pub line_height: f32, pub weight: f32, pub max_lines: Option<usize>, pub ellipsis: bool, pub underline: bool, pub strikethrough: bool, pub spans: Option<Vec<TextSpan>>, pub letter_spacing: f32, pub word_spacing: f32, pub no_wrap: bool, pub overflow_wrap: bool,
}
Expand description

Datos de un nodo-hoja de texto necesarios para medirlo (shaping + line-break) sin volver a tocar el View. Lo consume el runtime en la función de medición que le pasa a LayoutTree::compute_with_measure.

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§content: String§size_px: f32§alignment: Alignment§italic: bool§font_family: Option<String>§line_height: f32§weight: f32§max_lines: Option<usize>§ellipsis: bool§underline: bool

Idem TextSpec::underline. Se replica en la medida porque parley no cambia de ancho con decoración (no toca el shaping); pero la clave del caché de shaping sí cambia, y queremos que medida y pintado peguen la misma entrada del caché.

§strikethrough: bool

Idem TextSpec::strikethrough. Mismo razonamiento que underline.

§spans: Option<Vec<TextSpan>>

Idem TextSpec::spans. La medida usa el mismo Typesetter::layout_spans que el pintado, así taffy reserva el alto real considerando overrides de size_px por span (un <h1> inline dentro de un párrafo agranda esa línea). None/vacío = medir con layout_clamped (camino uniforme).

§letter_spacing: f32

Idem TextSpec::letter_spacing. Entra en la medida porque cambia el ancho del shaping (y la clave del caché).

§word_spacing: f32

Idem TextSpec::word_spacing. Mismo razonamiento que letter_spacing.

§no_wrap: bool

Idem TextSpec::no_wrap. Entra en la medida porque cambia el ancho reservado: con no_wrap el texto se mide en una sola línea (ancho completo) en vez de envolver al available.

§overflow_wrap: bool

Idem TextSpec::overflow_wrap. Entra en la medida porque parte la palabra larga: con el flag, el ancho mínimo del bloque deja de estar fijado por el token más ancho.

Trait Implementations§

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impl Clone for TextMeasure

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fn clone(&self) -> TextMeasure

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