EchoHub/docs/auriondocs/Code/src/EchoHub.Client/UI/Chat/RenderHelpers.cs.md

RenderHelpers

File: src/EchoHub.Client/UI/Chat/RenderHelpers.cs
Kind: class

static class RenderHelpers

RenderHelpers is a small static utility class that centralizes rendering concerns for IListDataSource implementations. It currently provides a single method, WriteText, which writes text to a ListView grapheme by grapheme, respecting a maximum width. It returns the updated drawn-columns count, enabling callers to track horizontal placement as multiple fields are rendered on a single line.

Remarks

RenderHelpers abstracts the grapheme-aware rendering logic so all list-rendering code shares the same boundary checks and column accounting. It couples the GraphemeHelper.GetGraphemes iteration with a safe width calculation, reducing the chance of off-by-one errors when composing UI rows. In short, it’s the single place responsible for safe, width-bound text rendering to a ListView in this UI layer.

Notes

• The width of each grapheme is determined by grapheme.GetColumns(), clamped to at least 1 with Math.Max(grapheme.GetColumns(), 1).
• Rendering stops when adding the next grapheme would exceed maxWidth; partial graphemes are not drawn.
• The method delegates actual drawing to ListView.AddStr, so callers should ensure the ListView state is appropriate for incremental writes.