Struct ShapeOptions 

pub struct ShapeOptions {
    pub width: Option<f32>,
    pub wrap: WrapMode,
    pub max_lines: Option<u32>,
    pub family: Option<Arc<str>>,
    pub weight: u16,
    pub line_height: Option<f32>,
}

Extension shape parameters. Backends that don’t override [TextShaper::shape_wrapped] fall through to the no-wrap path so old callers keep working.

Fields

width: Option<f32>

Available width for wrapping, in logical pixels. None = unbounded.

wrap: WrapMode

Wrap policy.

max_lines: Option<u32>

Hard cap on line count after shaping (callers cull). None = unbounded.

family: Option<Arc<str>>

CSS font-family fallback chain as authored (comma-separated, possibly quoted names, generic keywords allowed). None = the platform sans-serif. The backend resolves the first family present in its font database.

weight: u16

CSS font-weight (1-1000; 400 = normal, 700 = bold).

line_height: Option<f32>

Resolved CSS line-height, in the same unit space as the size_px argument passed alongside these options to TextShaper::shape (a caller that scales size_px by DPR must scale this the same way). None => the backend’s own line-height: normal fallback (DEFAULT_LINE_HEIGHT_MULTIPLIER). Callers with a TextStyle-ish source resolve one via lumen_core::components::resolve_line_height before constructing these options; this field never re-derives the multiplier itself.

Implementations

impl ShapeOptions

pub fn resolved_line_height(&self, size_px: f32) -> f32

Line height in the same unit space as size_px: the authored CSS line-height when the caller resolved one, else size_px times DEFAULT_LINE_HEIGHT_MULTIPLIER. Shaping, measuring, and painting all route through this so one paragraph cannot end up with three different line heights.

Trait Implementations

impl Clone for ShapeOptions

fn clone(&self) -> ShapeOptions

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ShapeOptions

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

Formats the value using the given formatter.

impl Default for ShapeOptions

fn default() -> Self

Returns the “default value” for a type.