Struct RegionScreen 

pub struct RegionScreen { /* private fields */ }

A bounded per-region virtual terminal.

Feed a child’s raw output bytes with feed; ANSI cursor, erase, scroll, and color sequences are applied to a fixed rows × cols cell grid rather than passed through, so a child that redraws in place renders correctly and can never move the host terminal’s cursor. Content past the last column truncates (the region does not auto-wrap). Rows that scroll off the top are returned so the caller can retain a bounded tail for a failure replay; on success they are simply dropped.

Implementations

impl RegionScreen

pub fn new(rows: usize, cols: usize) -> Self

Create a screen over a fresh rows × cols grid (each clamped to ≥ 1).

pub fn feed(&mut self, bytes: &[u8]) -> Vec<String>

Feed raw output bytes, returning the rows evicted by scrolling.

Bytes are parsed as a VT stream and applied to the grid; multi-byte and split UTF-8 sequences are reassembled across calls by the parser. Evicted rows are returned oldest first, already styled, so the caller can retain a bounded tail in order (for a failure replay) or drop them.

pub fn render(&self) -> Vec<String>

The current grid contents as styled rows (exactly the grid height).

pub fn drain(self) -> Vec<String>

Consume the screen, returning its remaining rows with trailing blank rows trimmed, so evicted rows plus this drain reconstruct the transcript.

Trait Implementations

impl Debug for RegionScreen

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.