fix: Only re-draw the screen if data/layout has changed

src/ui/redraw.rs

@@ -0,0 +1,25 @@
+use std::sync::atomic::{AtomicBool, Ordering};
+
+#[derive(Debug)]
+pub struct Redraw(AtomicBool);
+
+impl Redraw {
+    pub const fn new() -> Self {
+        Self(AtomicBool::new(true))
+    }
+
+    pub fn set_true(&self) {
+        self.0.store(true, Ordering::SeqCst);
+    }
+
+    /// Return the value of the self, and set to false
+    pub fn swap(&self) -> bool {
+        match self
+            .0
+            .compare_exchange(true, false, Ordering::SeqCst, Ordering::SeqCst)
+        {
+            Ok(previous_value) => previous_value,
+            Err(current_value) => current_value,
+        }
+    }
+}