Struct Screen 

pub struct Screen { /* private fields */ }

The diff renderer - maintains previous frame and emits minimal ANSI updates.

Implementations

impl Screen

pub fn new() -> Self

pub fn prev_viewport_top(&self) -> usize

Viewport top position (first visible line in terminal)

pub fn hardware_cursor_row(&self) -> usize

The row where the hardware cursor physically sits after the last render. Used by TUI to position the cursor to the marker position via relative movements (matching pi’s approach).

pub fn set_hardware_cursor_row(&mut self, row: usize)

Update the tracked hardware cursor row after TUI repositions the cursor (matching pi’s hardwareCursorRow = targetRow in positionHardwareCursor).

pub fn prev_width(&self) -> usize

pub fn prev_height(&self) -> usize

pub fn full_redraw_count(&self) -> usize

pub fn total_lines(&self) -> usize

Total number of lines in the last rendered frame.

pub fn finalize(&mut self, writer: &mut dyn Write) -> Result<()>

Move cursor to one line past all rendered content (for clean program exit). Writes the ANSI cursor-positioning sequences and \r\n so that subsequent shell output appears on a fresh line after all TUI content.

pub fn set_clear_on_shrink(&mut self, enabled: bool)

pub fn set_use_sync_output(&mut self, enabled: bool)

Enable or disable synchronized output markers (\x1b[?2026h / \x1b[?2026l). Enabled by default (matching pi’s always-on approach).

pub fn render( &mut self, new_lines: Vec<String>, width: u16, height: u16, writer: &mut dyn Write, ) -> Result<Option<(usize, usize)>>

Render new lines to the terminal using differential updates. writer should be the terminal’s stdout (in raw mode). width and height are the current terminal dimensions.

Lines may contain cursor markers (CURSOR_MARKER) which are extracted and used for cursor tracking. Returns the cursor (row, col) position if a marker was found, or None.

Trait Implementations

impl Default for Screen

fn default() -> Self

Returns the “default value” for a type.