markdown::layout — height estimation

A single function that predicts how many terminal rows markdown will occupy, so callers can size a scroll container before rendering.

pub fn estimate_height(text: &str, max_w: u16) -> u16

estimate_height runs the same pulldown_cmark event walk and the same wrapping logic as MarkdownRenderable::render_self — it even mirrors the table-buffering behavior — so its answer matches what the renderer will actually produce. List markers, code blocks, blockquotes, and table rows are all counted identically.

• Empty text or max_w == 0 returns 1.
• Returns at least 1 row for any non-empty input.

Example

use cosh_tui::core::renderables::markdown::layout::estimate_height;

let md = "# Title\n\nSome body text that may wrap across several lines.\n";
let rows = estimate_height(md, 40);   // how tall the rendered block will be

This is the module behind the estimate_height re-export on markdown; the context tracker it uses is documented in context.