Module table 

Columns, narrowing, cell parts and the sort caret, over egui_extras. Columns, narrowing, cell parts and the sort caret, over egui_extras.

makeover-webview’s list module and makeover-tui’s table in the shape immediate mode allows. It owns the same four things: which columns exist, how wide they are, which ones survive a narrow viewport, and what each part of a cell is. It does not own what goes in a cell, which here is not a policy but a fact of the mode: a cell’s contents are drawn by the app’s own closure, the way group already takes one per field.

Why egui_extras and not egui

egui itself has no table. egui::Grid gives no per-column sizing, no sticky header and no scroll sync, which is why audiofiles reached for egui_extras::TableBuilder rather than building on Grid. Writing a third answer here would be reimplementing that crate worse, so this is a mapping layer over it.

It is the first dependency this crate has taken beyond egui itself, and it moves in lockstep with egui’s own version, which is the cost worth naming.

What immediate mode costs the narrowing

The terminal renderer measures a [Width::Content] column from its cells, because it holds every cell before it draws any. Here the cells do not exist until the app’s closure runs, so nothing can be measured before the layout is decided.

That splits the answer in two, and both halves are honest:

• Sizing hands a content column to egui_extras::Column::auto, which measures it and holds the result between frames. This is better than the terminal gets, not worse.
• Narrowing cannot wait for that, so it budgets a content column at the floor the app declared in [Sizing]. A column that turns out wider than its floor is still drawn; it is the decision to drop that uses the declared number, and a floor is what the app already has to supply for its fill columns.

Why positions are the bug

Carried from the other two renderers, because the mistake is not a CSS mistake and not a terminal one. goingson hides its mobile columns with nth-child(n+5) against a seven-column table; insert a column left of the cut and the wrong one disappears, silently. A renderer narrows by raising a cutoff and never by counting.

Structs

Body

The body’s own facts for this frame: how many rows, which are selected, and which one to bring into view.

Sizing

The lengths the description deferred, in points.

TableStyle

The tones and metrics a table draws with.

Functions

cell

Draw a cell’s contents with the tone its part takes.

cutoff_for

The weakest cutoff whose columns fit in width.

heading

The heading, with the caret if the table is ordered by this column.

part_color

The colour a cell of this part takes.

table

A described table, narrowed for the width available.