Struct TileContext 

pub struct TileContext<'a, T: 'static> {
    pub index: usize,
    pub row: usize,
    pub col: usize,
    pub item: &'a T,
    pub is_selected: bool,
    pub is_focused: bool,
}

Context passed to the tile delegate for each realized tile.

Richer than ListView’s (index, &item, selected) — carries the 2D grid coordinates and focus state (mirrors TableView’s CellContext). There is intentionally no is_hovered: hover changes on every mouse-move and is handled per-tile inside the delegate’s own widget (its interaction signal), never by rebuilding the grid.

Fields

index: usize

Flat model index.

row: usize

Row in the logical grid (0-based).

col: usize

Column in the logical grid (0-based).

item: &'a T

Borrow of the item.

is_selected: bool

Whether this tile is in the selection set.

is_focused: bool

Whether this tile is the keyboard-focus current item. A build-time snapshot — the canonical focus indicator is the grid’s painted focus ring (it does not rebuild tiles), so a delegate reading this for custom styling accepts a one-rebuild lag.