Now with GUI display

src/board.rs

@@ -1,7 +1,7 @@
 use crate::cell::{Cell, CellValue};
 use std::collections::HashSet;
 use std::fmt;
-use ndarray::prelude::*;
+use ndarray::{prelude::*, ViewRepr};
 
 const REGION_SIZE: usize = 9;
 const SUB_REGION_SIZE: usize = 3;
@@ -74,6 +74,22 @@ impl Board {
     pub fn candidates(&self, point: &Point) -> HashSet<CellValue> {
         self.cells[point.coordinates()].candidates()
     }
+
+    pub fn row_range(&self) -> std::ops::Range<usize> {
+        0..REGION_SIZE
+    }
+
+    pub fn col_range(&self) -> std::ops::Range<usize> {
+        0..REGION_SIZE
+    }
+
+    pub fn row_iter(&self, row: usize) -> ndarray::ArrayBase<ViewRepr<&Cell>, Dim<[usize; 1]>> {
+        self.cells.slice(s![row, ..])
+    }
+    
+    pub fn col_iter(&self, col: usize) -> ndarray::ArrayBase<ViewRepr<&Cell>, Dim<[usize; 1]>> {
+        self.cells.slice(s![.., col])
+    }
 }
 
 #[derive(PartialEq, Debug)]

src/lib.rs

@@ -3,4 +3,5 @@ mod board;
 
 pub use board::Board;
 pub use board::Point;
+pub use cell::Cell;
 pub use cell::CellValue;

src/main.rs

@@ -1,8 +1,6 @@
 use iced::widget::button;
 use iced::widget::text;
 use rustdoku::Board;
-use rustdoku::CellValue;
-use rustdoku::Point;
 
 use iced;
 
@@ -25,12 +23,37 @@ impl Default for State {
     }
 }
 
-fn update(state: &mut State, message: Message) {
+fn display_cell(cell: &rustdoku::Cell) -> iced::Element<Message> {
+    let display = match cell.value() {
+        Some(v) => v.to_string(),
+        None => "?".to_string(),
+    };
+    button(text(display)).on_press(Message::Pressed).into()
+}
+
+fn update(state: &mut State, _message: Message) {
     state.message = "Hello, world".to_string();
 }
 
 fn display(state: &State) -> iced::Element<Message> {
-    button(text(&state.message)).on_press(Message::Pressed).into()
+    let mut column: Vec<iced::Element<Message>> = Vec::with_capacity(9);
+    for row_idx in state.board.row_range() {
+        let row: Vec<iced::Element<Message>> = state.board
+                .row_iter(row_idx)
+                .into_iter()
+                .map(|c| display_cell(c))
+                .into_iter()
+                .collect();
+        column.push(
+            iced::widget::Row::with_children(row)
+                .spacing(3)
+                .into()
+        );
+    }
+    
+    iced::widget::Column::with_children(column)
+        .spacing(3)
+        .into()
 }
 
 fn main() -> iced::Result {