implement Draw<Tui> for usize

src/term.rs

@@ -439,6 +439,28 @@ impl<T: Draw<Tui>> Draw<Tui> for ShowSizeOf<T> {
         }
     }
 
+    impl_draw!(|self: usize, to: Tui|{
+        let XYWH(x0, y0, w0, h0) = to.area();
+        let mut v = *self;
+        let w = (1 + if v > 0 { self.ilog10() } else { 0 }) as u16;
+        let h = 1u16;
+        Ok((w0 >= w && h0 >= h).then(||{
+            if let Tui::Draw(buffer, ..) = to {
+                let mut x = x0 + w - 1;
+                while x >= x0 {
+                    if let Some(cell) = buffer.cell_mut(Position { x, y: y0 }) {
+                        cell.set_char([
+                            '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'
+                        ][(v % 10) as usize]);
+                    }
+                    x -= 1;
+                    v = v / 10;
+                }
+            }
+            XYWH(x0, y0, w, h)
+        }))
+    });
+
     impl_draw!(|self: String, to: Tui|{
         self.as_str().draw(to)
     });