Struct LineElement 

pub struct LineElement {
    pub color: Option<ThemeColor>,
    pub linewidth_pt: Option<Length>,
    pub linetype: Option<Arc<[LinetypeStep]>>,
    pub cap: Option<Cap>,
    pub join: Option<Join>,
}

Stroke styling — colour, width, dash pattern, cap, join.

Every field is Option<...> so an override can set just the fields it cares about, with the rest cascading through the parent chain. After cascading, callers fall through to line_concrete_defaults for any remaining Nones.

Fields

color: Option<ThemeColor>

Stroke colour.

linewidth_pt: Option<Length>

Stroke width. Resolves against the inherited parent’s resolved linewidth — Rel(2.0) = twice the parent.

linetype: Option<Arc<[LinetypeStep]>>

Dash pattern. Empty = solid stroke. Reuses the same LinetypeStep machinery the geom layer already ships.

cap: Option<Cap>

Line end cap.

join: Option<Join>

Line join.

Implementations

impl LineElement

pub fn cascade(&self, parent: &Self) -> Self

Merge self over parent: per-field, self’s Some wins; None falls through to parent’s value.

Trait Implementations

impl Clone for LineElement

fn clone(&self) -> LineElement

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LineElement

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

Formats the value using the given formatter.

impl Default for LineElement

fn default() -> LineElement

Returns the “default value” for a type.

impl PartialEq for LineElement

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for LineElement