com.blockether.vis.ext.channel-tui.flex — com.blockether/vis-channel-tui 0.1.6

Tiny declarative layout layer — the React/Ink flavour for the TUI.

Instead of threading col/row/width by hand (the (reduce (fn [x …] (+ x (widget! g x row …))) start items) pattern repeated across the header, footer, tab strip and dialogs), you describe a UI as a tree of measured NODES and let render! place them.

A NODE is a map {:w <cols> :h <rows> :paint (fn [g col row])}. Every builder returns a node, and row/col are themselves nodes, so layouts NEST like React elements:

(flex/render! g x y
  (flex/row [(flex/text " help " {:bold? true})
             (flex/node w #(button! %1 %2 %3 …))]   ; bridge existing widgets
            {:gap 1 :align :right :width slot-w}))

The bridge node wraps any existing foo! paint-thunk (which already knows its own width and click registration), so nothing about the drawing or hover contract changes — only the coordinate arithmetic disappears.

col clj

(col children)

(col children {:keys [gap] :or {gap 0}})

Vertical box: stack children top→bottom, each advanced by its own height, with :gap blank rows between them. Width is the widest child.

height clj

(height n)

node clj

(node w paint)

(node w h paint)

Wrap an explicit size + paint thunk as a layout node. paint is (fn [g col row]); its return value is ignored (the node's width is w). Height defaults to 1 (single row) — pass h for multi-row widgets.

node? clj

(node? x)

True when x is a layout node.

render! clj

(render! g col row n)

Paint node n at absolute cell (col,row) and return its width. Accepts a bare string (lifted to a text node) or nil (paints nothing, returns 0).

row clj

(row children)

(row children {:keys [gap align] fixed-w :width :or {gap 0 align :left}})

Horizontal box: lay children out left→right with :gap blank cells between them. children are nodes (bare strings are lifted to text nodes; nils are dropped). Returns a NODE whose intrinsic width is the sum of child widths plus gaps and whose height is the tallest child.

With :width the row occupies EXACTLY that many cells and :align (:left | :center | :right, default :left) positions the child cluster within the slack.

spacer clj

(spacer w)

(spacer w h)

A fixed-size empty node — a horizontal (or vertical) gap that paints nothing.

text clj

(text s)

(text s {:keys [fg bg bold?]})

A one-row text node. Paints s in optional :fg/:bg with optional :bold?. Width is the string's DISPLAY width, so wide glyphs measure right.

width clj

(width n)