Struct NumberlinkWidget 

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

An egui widget that renders an interactive Numberlink board.

Press and drag from either of a number’s two endpoints (both are always live, symmetrically — grabbing one always starts fresh from there, even if the path was originally drawn from the other end) to draw/redraw its path. Grabbing an interior cell of an already-drawn path instead truncates it to that point. Dragging back over the path’s own previous cell retracts it by one; dragging onto a different number’s path is rejected. A plain click (no drag) on an endpoint or path cell clears/ starts the path immediately, without needing to drag at all.

ui.add(egui_numberlink::NumberlinkWidget::new(&mut game));

Implementations

impl<'a> NumberlinkWidget<'a>

pub fn new(game: &'a mut NumberlinkGame) -> Self

pub fn cell_size(self, size: f32) -> Self

Override the size (in logical pixels) of each grid cell. When not set, the cell size is computed automatically to fill the available space of the parent container.

pub fn colors(self, colors: &'a [Color32]) -> Self

Per-number color, indexed by number (colors[number % colors.len()]) — the customization point for embedding apps that want to reskin the board. Defaults to DEFAULT_COLORS, a colorblind-safe palette.

Panics

Panics if colors is empty.

pub fn show_numbers(self, show: bool) -> Self

Whether each number’s digit is drawn on its two endpoint markers. Defaults to true — this is what keeps the board reading as Numberlink (numbers are the primary identifier) rather than a colors-only clone; color is a skin on top, not a replacement.

pub fn win_message(self, message: impl Into<String>) -> Self

Message shown in the win banner drawn over the board once GameStatus::Won is reached. Defaults to "Solved!".

pub fn interactive(self, interactive: bool) -> Self

Whether the widget responds to drags at all. Set to false to render the board read-only. Defaults to true.

Trait Implementations

impl Widget for NumberlinkWidget<'_>

fn ui(self, ui: &mut Ui) -> Response

Allocate space, interact, paint, and return a Response.