Struct Gutter 

pub struct Gutter {
    pub width: u16,
    pub style: Style,
    pub line_offset: usize,
    pub numbers: GutterNumbers,
    pub sign_column_width: u16,
}

Configuration for the line-number gutter rendered to the left of the text area. width is the number-column cell count reserved (including any trailing spacer); the renderer right-aligns the 1-based row number into the leftmost width - 1 cells.

sign_column_width reserves cells to the LEFT of the number column for sign chars (LSP diagnostics, git diff markers). The sign column is a dedicated strip separate from the number column: vim/neovim convention is [ sign | number_padded | spacer | text ]. When sign_column_width == 0 the layout collapses to [ number_padded | spacer | text ].

line_offset is added to the displayed line number, so a host rendering a windowed view of a larger document (e.g. picker preview of a 7000-line buffer) can show the original line numbers instead of starting at 1. Only applied in Absolute mode.

Fields

width: u16

Width of the number column (digits + 1 trailing spacer). Does NOT include sign_column_width.

style: Style

line_offset: usize

numbers: GutterNumbers

What kind of numbers to render. Defaults to Absolute.

sign_column_width: u16

Width of the dedicated sign column to the left of the number column. Typically 0 (no signs) or 1 (one sign char per row). Signs are painted in area.x .. area.x + sign_column_width; numbers are painted in area.x + sign_column_width .. area.x + sign_column_width + width.

Trait Implementations

impl Clone for Gutter

fn clone(&self) -> Gutter

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Gutter

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

Formats the value using the given formatter.

impl Default for Gutter

fn default() -> Gutter

Returns the “default value” for a type.

impl Copy for Gutter