Initial commit of an attempt of making my own wayland locker like swaylock

src/timer.rs

@@ -0,0 +1,26 @@
+use std::time::Duration;
+
+pub struct FadeTimer {
+    duration: Duration,
+    start_time: std::time::Instant,
+}
+
+impl FadeTimer {
+    pub fn new(duration: Duration) -> Self {
+        Self {
+            duration,
+            start_time: std::time::Instant::now(),
+        }
+    }
+
+    pub fn update(&mut self) -> bool {
+        let elapsed = self.start_time.elapsed();
+        let progress = elapsed.as_secs_f64() / self.duration.as_secs_f64();
+        progress >= 1.0
+    }
+
+    pub fn current_alpha(&self) -> f64 {
+        let elapsed = self.start_time.elapsed();
+        (elapsed.as_secs_f64() / self.duration.as_secs_f64()).min(1.0)
+    }
+}