Struct Scene

pub struct Scene {
    pub layers: Vec<Layer>,
}

Ordered paint layers (base + overlays) with optional per-layer clips.

The vector is the final submission order; Scene does not sort or merge layers. An empty scene is valid and renders nothing.

Examples

use ailloli_ui_runtime::scene::Scene;
assert!(Scene::default().layers.is_empty());

Fields

layers: Vec<Layer>

Layers in back-to-front submission order.

Implementations

impl Scene

Provides the operations defined for Scene.

pub fn push_layer(&mut self, layer: Layer)

Appends a layer without reordering it by LayerKind.

Examples

use ailloli_ui_runtime::scene::{ClipStackSnapshot, Layer, Scene};
let mut scene = Scene::default();
scene.push_layer(Layer::base(ClipStackSnapshot::empty()));
assert_eq!(scene.layers.len(), 1);

pub fn push_base_layer(&mut self, clip: ClipStackSnapshot)

Appends an empty base layer using clip.

Examples

use ailloli_ui_runtime::scene::{ClipStackSnapshot, LayerKind, Scene};
let mut scene = Scene::default();
scene.push_base_layer(ClipStackSnapshot::empty());
assert_eq!(scene.layers[0].kind, LayerKind::Base);

pub fn push_overlay_layer(&mut self, clip: ClipStackSnapshot)

Appends an empty overlay layer using clip.

Examples

use ailloli_ui_runtime::scene::{ClipStackSnapshot, LayerKind, Scene};
let mut scene = Scene::default();
scene.push_overlay_layer(ClipStackSnapshot::empty());
assert_eq!(scene.layers[0].kind, LayerKind::Overlay);

pub fn from_base_and_overlay( base_clip: Option<ClipShape>, base_cmds: Vec<DrawCmd>, overlay_clip: Option<ClipShape>, overlay_cmds: Vec<DrawCmd>, ) -> Self

Builds exactly two layers: base first and overlay second.

Command vectors are moved without cloning. None clips create empty clip snapshots, and both root flags are false.

Examples

use ailloli_ui_runtime::scene::{LayerKind, Scene};
let scene = Scene::from_base_and_overlay(None, vec![], None, vec![]);
assert_eq!(scene.layers.len(), 2);
assert_eq!((scene.layers[0].kind, scene.layers[1].kind), (LayerKind::Base, LayerKind::Overlay));

Trait Implementations

impl Clone for Scene

fn clone(&self) -> Scene

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Scene

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

Formats the value using the given formatter.

impl Default for Scene

fn default() -> Scene

Returns the “default value” for a type.