Struct Splitter 

pub struct Splitter<'a, Msg> { /* private fields */ }

Two panes that share an area: side by side with Splitter::columns, stacked with Splitter::rows. The application owns the size of the first pane; the second takes the rest.

Without Splitter::on_resize the panes simply sit next to each other. With it, a one-cell boundary separates them. The boundary is invisible until the pointer reaches it: then it brightens one step, and while dragged it takes the accent. It can also be focused with Tab and moved with the arrow keys (Shift moves five cells, Home and End jump to the limits).

Style keys: split-handle (bg, fg) with hover, focus and active (dragging).

Implementations

impl<'a, Msg: 'static> Splitter<'a, Msg>

pub fn columns(width: u16) -> Self

Panes side by side; the first (left) pane is width columns wide.

pub fn rows(height: u16) -> Self

Stacked panes; the first (top) pane is height rows tall.

pub fn limits(self, min: u16, max: impl Into<Option<u16>>) -> Self

The smallest and largest size of the first pane, in cells: limits(16, 60) for a range, or limits(16, None) for no upper limit. By default 1 and no upper limit; whatever the limits, the second pane keeps at least one cell. A max below min counts as min.

pub fn on_resize(self, message: impl Fn(u16) -> Msg + 'static) -> Self

Makes the boundary draggable and focusable; the message carries the first pane’s new size, already within the limits.

pub fn first(self, build: impl FnOnce(&mut View<'_, Msg>) + 'a) -> Self

The left or top pane.

pub fn second(self, build: impl FnOnce(&mut View<'_, Msg>) + 'a) -> Self

The right or bottom pane.

pub fn show<'v>(self, ui: &'v mut View<'_, Msg>) -> NodeMut<'v, Msg>

Adds the splitter to ui, filling the space it gets.