Enum SceneLayer 

pub enum SceneLayer {
    Under,
    Over,
}

Which paint band a lightweight SceneItem sits in, relative to the heavyweight widget tier.

A SceneView paints in three passes: lightweight Under items (its paint, a backdrop), then the heavyweight widget children (the arena child-walk), then lightweight Over items (its post_paint, a foreground). Within each band, z still orders items among themselves.

This is a binary band, not a continuous z across the tiers, because the render walker offers exactly two lightweight paint positions (before and after the child subtree). The heavyweight tier is one contiguous block in between — to interleave a lightweight item between two specific heavyweight nodes you must promote it to a heavyweight widget. Under is the default (background furniture: connectors, grids, decorations); Over is for foreground overlays that must sit above the cards (selection halos, highlighted edges).

Variants

Under

Painted under the heavyweight widget children (the default).

Over

Painted over the heavyweight widget children.

Trait Implementations

impl Clone for SceneLayer

fn clone(&self) -> SceneLayer

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SceneLayer

impl Debug for SceneLayer

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

Formats the value using the given formatter.

impl Default for SceneLayer

fn default() -> SceneLayer

Returns the “default value” for a type.

impl Eq for SceneLayer

impl PartialEq for SceneLayer

fn eq(&self, other: &SceneLayer) -> 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 StructuralPartialEq for SceneLayer