Enum TextLineHeightPolicy 

pub enum TextLineHeightPolicy {
    ExpandToFit,
    FixedFromStyle,
}

Variants

ExpandToFit

Expand the line box to fit font extents (never reduce below ascent+descent).

This avoids clipping but can cause line height to vary when fallback fonts or emoji participate in shaping.

FixedFromStyle

Keep a fixed line box derived from style (px or ratio) and compute baseline placement via a CSS/GPUI-like “half-leading” model.

This favors stable layout for UI surfaces (forms, lists, buttons). Glyphs whose ink extends beyond the line box may be clipped by the caller’s bounds.

Trait Implementations

impl Clone for TextLineHeightPolicy

fn clone(&self) -> TextLineHeightPolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TextLineHeightPolicy

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

Formats the value using the given formatter.

impl Default for TextLineHeightPolicy

fn default() -> TextLineHeightPolicy

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for TextLineHeightPolicy

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Hash for TextLineHeightPolicy

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for TextLineHeightPolicy

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Serialize for TextLineHeightPolicy

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for TextLineHeightPolicy

impl Eq for TextLineHeightPolicy

impl StructuralPartialEq for TextLineHeightPolicy