Struct TextScaleEntry 

pub struct TextScaleEntry {
    pub size: Option<f32>,
    pub weight: Option<u16>,
    pub line_height: Option<f32>,
}

A single entry in a text scale: size, weight, and line height.

Used to define typographic roles (caption, heading, etc.) with consistent sizing and spacing.

Fields

size: Option<f32>

Font size in logical pixels.

weight: Option<u16>

CSS font weight (100–900).

line_height: Option<f32>

Line height in logical pixels. When None, resolve() computes it as defaults.line_height × size.

Implementations

impl TextScaleEntry

pub fn merge(&mut self, overlay: &Self)

Merge an overlay into this value. Some fields in the overlay replace the corresponding fields in self; None fields are left unchanged. Nested structs are merged recursively.

pub fn is_empty(&self) -> bool

Returns true if all fields are at their default (None/empty) state.

Trait Implementations

impl Clone for TextScaleEntry

fn clone(&self) -> TextScaleEntry

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for TextScaleEntry

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

Formats the value using the given formatter.

impl Default for TextScaleEntry

fn default() -> TextScaleEntry

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for TextScaleEntry

where TextScaleEntry: Default,

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for TextScaleEntry

fn eq(&self, other: &TextScaleEntry) -> 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 TextScaleEntry

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for TextScaleEntry