Struct Layout 

pub struct Layout<'a> { /* private fields */ }

A 2D grid-based layout container.

Children are placed at grid coordinates with optional spanning. The grid solver distributes space according to row/column constraints.

Implementations

impl<'a> Layout<'a>

pub fn new() -> Self

Create a new empty layout.

pub fn rows(self, constraints: impl IntoIterator<Item = Constraint>) -> Self

Set the row constraints.

pub fn columns(self, constraints: impl IntoIterator<Item = Constraint>) -> Self

Set the column constraints.

pub fn row_gap(self, gap: u16) -> Self

Set the gap between rows.

pub fn col_gap(self, gap: u16) -> Self

Set the gap between columns.

pub fn gap(self, gap: u16) -> Self

Set uniform gap for both rows and columns.

pub fn child( self, widget: impl Widget + 'a, row: usize, col: usize, rowspan: usize, colspan: usize, ) -> Self

Add a child widget at a specific grid position with spanning.

pub fn cell(self, widget: impl Widget + 'a, row: usize, col: usize) -> Self

Add a child widget at a single grid cell (1x1).

pub fn len(&self) -> usize

Number of children.

pub fn is_empty(&self) -> bool

Whether the layout has no children.

Trait Implementations

impl<'a> Debug for Layout<'a>

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

Formats the value using the given formatter.

impl Default for Layout<'_>

fn default() -> Self

Returns the “default value” for a type.

impl Widget for Layout<'_>

fn render(&self, area: Rect, frame: &mut Frame<'_>)

Render the widget into the frame at the given area.

fn is_essential(&self) -> bool

Whether this widget is essential and should always render.