Specify frame limit as FPS instead of as frame time

1 files changed, 10 insertions, 2 deletions

diff --git a/src/window_manager.rs b/src/window_manager.rs
index 2652682..9322adb 100644
--- a/src/window_manager.rs
+++ b/src/window_manager.rs
@@ -10,14 +10,22 @@ pub struct WindowManager {
 }
 
 impl WindowManager {
-    pub fn new(min_frame_duration: Duration) -> Self {
+    pub fn new() -> Self {
         Self {
             event_loop: EventLoop::new(),
             windows: HashMap::new(),
-            min_frame_duration,
+            min_frame_duration: Duration::ZERO,
         }
     }
 
+    pub fn with_frame_limit(mut self, limit: u64) -> Self {
+        self.min_frame_duration = match limit {
+            0 => Duration::ZERO,
+            _ => Duration::from_nanos(1_000_000_000 / limit),
+        };
+        return self;
+    }
+
     /// Add a window to the window manager before the event loop begins.
     pub fn add_window(&mut self, controller: Box<dyn WindowController>) {
         let window = Window::new(&self.event_loop, controller);