Struct View 

pub struct View {
    pub top: usize,
    pub cols: u16,
    pub rows: u16,
    pub line_numbers: bool,
}

Scroll state bound to a terminal size.

Fields

top: usize

Zero-indexed rendered line at the top of the viewport.

cols: u16

rows: u16

line_numbers: bool

Dim 1-indexed line-number gutter. Toggled live with #.

Implementations

impl View

pub fn new(cols: u16, rows: u16) -> Self

Viewport at (cols, rows), scrolled to the top.

pub fn with_line_numbers(self, on: bool) -> Self

Builder toggle for the line-number gutter.

pub fn apply(&mut self, cmd: Command, doc: &RenderedDoc) -> bool

Apply cmd to the scroll state. Returns true on Quit.

Search / highlight / redraw commands are handled by the event loop; this method only reacts to scroll commands.

pub fn scroll_to(&mut self, line: usize, doc: &RenderedDoc)

Scroll so line sits near the top, leaving a two-line breadcrumb above it when the document has room. Jumps for search / heading navigation use this; bookmarks want exact placement and call jump_to instead.

pub fn jump_to(&mut self, line: usize, doc: &RenderedDoc)

Place line at the exact top of the viewport, clamped to the doc.

pub fn resize(&mut self, cols: u16, rows: u16, doc: &RenderedDoc)

Update size after a terminal resize and clamp top to the new end.

pub fn draw<W: Write>( &self, out: &mut W, doc: &RenderedDoc, matches: &[Match], current: Option<&Match>, status: Option<&str>, ) -> Result<()>

Render the visible document slice + status line to out.

status controls the bottom row: None draws the default position indicator, Some("…") draws whatever the caller supplies (used for search prompt and search summaries). matches lists highlight ranges (plain byte ranges) across the whole document; the draw routine filters per-line and maps into styled byte offsets via RenderedDoc::line_starts.

pub fn draw_toc<W: Write>( &self, out: &mut W, headings: &[HeadingEntry], toc: &Toc, ) -> Result<()>

Render the TOC modal: full-frame heading list with the selected row reversed, plus a status line prompting navigation keys.

Trait Implementations

impl Clone for View

fn clone(&self) -> View

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for View

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

Formats the value using the given formatter.

impl Copy for View