Struct ScrollSyncGroup 

pub struct ScrollSyncGroup {
    pub id: ScrollSyncGroupId,
    pub left_split: SplitId,
    pub right_split: SplitId,
    pub scroll_line: usize,
    pub anchors: Vec<SyncAnchor>,
}

A group of two splits that scroll together with anchor-based synchronization

Unlike the simple sync_group which applies the same scroll delta to all splits, this uses sync anchors to correctly handle buffers with different line counts.

Fields

id: ScrollSyncGroupId

Unique ID for this sync group

left_split: SplitId

The left (primary) split - scroll position is tracked in this split’s line space

right_split: SplitId

The right (secondary) split - position is derived from anchors

scroll_line: usize

Single source of truth: scroll position in left buffer’s line space Both splits derive their viewport position from this value

anchors: Vec<SyncAnchor>

Sync anchors ordered by left_line These mark corresponding positions between the two buffers

Implementations

impl ScrollSyncGroup

pub fn new( id: ScrollSyncGroupId, left_split: SplitId, right_split: SplitId, ) -> Self

Create a new scroll sync group

pub fn set_anchors(&mut self, anchors: Vec<SyncAnchor>)

Set the sync anchors (replacing any existing ones) Anchors should be sorted by left_line

pub fn contains_split(&self, split_id: SplitId) -> bool

Check if a split is part of this sync group

pub fn is_left_split(&self, split_id: SplitId) -> bool

Check if a split is the left (primary) split

pub fn left_to_right_line(&self, left_line: usize) -> usize

Convert a line number from left buffer space to right buffer space

pub fn right_to_left_line(&self, right_line: usize) -> usize

Convert a line number from right buffer space to left buffer space

pub fn apply_scroll_delta( &mut self, split_id: SplitId, delta_lines: isize, ) -> bool

Update scroll position from a scroll delta on the given split Returns true if this group handled the scroll

pub fn set_scroll_line(&mut self, line: usize)

Set scroll position directly (used for SetViewport events) The line number should be in left buffer space

pub fn left_scroll_line(&self) -> usize

Get the scroll line for the left split

pub fn right_scroll_line(&self) -> usize

Get the scroll line for the right split (derived via anchors)

pub fn scroll_line_for_split(&self, split_id: SplitId) -> usize

Get the scroll line for a specific split

Trait Implementations

impl Clone for ScrollSyncGroup

fn clone(&self) -> ScrollSyncGroup

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ScrollSyncGroup

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

Formats the value using the given formatter.