Class: WidgetSystem

Resolves WidgetComponent into TransformComponent x/y, and into UITransform width/height in stretch mode (both opposite edges set).

Coordinates: child origin sits at the anchor rect's anchor point (= the resolved rect's world position). In that local space the rect spans [-anchorX*pw, (1-anchorX)pw] × [-anchorYph, (1-anchorY)*ph]. Y is up (framework convention), so the top edge is the larger y. top / bottom are inward distances from those edges; verticalCenter is an offset from the centre, positive = up.

Entity scale: edges anchor against the child's scaled footprint (childUI dims × transform scale), so a scaled entity's far edge still lands on its target. Stretch mode divides the written UITransform dim by scale so the visible span — not the raw dim — matches the gap.

Anchor target sources (per widget.anchorTarget): null — host's immediate hierarchy parent UITransform (requires hier.parent !== null) EntityId — that entity's UITransform regardless of hierarchy 'window' — visible-window rect in design-space coordinates (renderer pixels / Pixi Fit-mode stage scale; reaches into letterbox / overscan regions)

Extends

• System

Constructors

Constructor

new WidgetSystem(): WidgetSystem;

Returns

WidgetSystem

Inherited from

System.constructor

Properties

Property	Modifier	Type	Default value	Inherited from
enabled	public	boolean	true	System.enabled
parallel	public	boolean	false	System.parallel

Methods

GetName()

GetName(): string;

Returns

string

Overrides

System.GetName

---

GetOrder()

GetOrder(): SystemOrder;

Ordered: Layout overrides Widget on its direct children.

Returns

SystemOrder

---

GetPhase()

GetPhase(): SystemPhase;

Returns

SystemPhase

Overrides

System.GetPhase

---

GetWrites()

GetWrites(): readonly string[];

Returns

readonly string[]

---

OnClose()

OnClose(): void;

Returns

void

Inherited from

System.OnClose

---

OnInit()

OnInit(_engine): void;

Parameters

Parameter	Type
_engine	IEngine

Returns

void

Inherited from

System.OnInit

---

OnRender()

OnRender(scene, renderer): void;

Parameters

Parameter	Type
scene	Scene
renderer	IRenderer

Returns

void

Overrides

System.OnRender

---

OnRendererChanged()

OnRendererChanged(_renderer): void;

Parameters

Parameter	Type
_renderer	IRenderer

Returns

void

Inherited from

System.OnRendererChanged

---

OnStart()

OnStart(_scene, _renderer): void;

Parameters

Parameter	Type
_scene	Scene
_renderer	IRenderer

Returns

void

Inherited from

System.OnStart

---

OnStop()

OnStop(_scene): void;

Parameters

Parameter	Type
_scene	Scene

Returns

void

Inherited from

System.OnStop

---

OnUpdate()

OnUpdate(_scene, _dt): void | Promise<void>;

Parameters

Parameter	Type
_scene	Scene
_dt	number

Returns

void | Promise<void>

Inherited from

System.OnUpdate