DividerEl class Core

Horizontal divider line, vertically centered — separator rows in menus/forms. DividerEl.Visible gates it per item (a non-separator row draws nothing), so one composition serves mixed row kinds.

public sealed class DividerEl : SlotEl

Namespace: ArionUI.Presentation
Package: ArionUI.Presentation · dotnet add package ArionUI.Presentation --prerelease
Inherits: SlotEl

Constructors

DividerEl

public DividerEl();

Properties

Color

public Rgba? Color { get; init; }

Colour of the line; null takes the theme's card border colour.

Visible

public Func<object, bool>? Visible { get; init; }

Per item: false draws nothing, so one composition serves mixed row kinds.

Methods

DrawContent

protected override void DrawContent(IRenderSurface s, LogRect rect, object item, IInteractionState state, int itemIndex);

Draws the element's own content into rect, which is already shrunk by SlotEl.Padding and has the background behind it. The layout math here must match SlotEl.Resolve, or the click zones drift away from the pixels.

IntrinsicWidth

protected internal override double IntrinsicWidth(object item, Func<string, TextStyle, double>? measure);

Intrinsic content width. measure measures a string the way the surface will actually draw it; null falls back to a per-character estimate.

Drawing and HIT-TESTING must use the same answer: give one of them the measure and not the other, and the click zone drifts away from the pixels.