Revert the commit that broke Zed display capabilities (#7326)

crates/gpui/src/platform/mac/window.rs

@@ -16,8 +16,8 @@ use cocoa::{
     },
     base::{id, nil},
     foundation::{
-        NSArray, NSAutoreleasePool, NSDefaultRunLoopMode, NSDictionary, NSFastEnumeration,
-        NSInteger, NSPoint, NSRect, NSSize, NSString, NSUInteger,
+        NSArray, NSAutoreleasePool, NSDictionary, NSFastEnumeration, NSInteger, NSPoint, NSRect,
+        NSSize, NSString, NSUInteger,
     },
 };
 use core_graphics::display::CGRect;
@@ -321,7 +321,6 @@ struct MacWindowState {
     executor: ForegroundExecutor,
     native_window: id,
     native_view: NonNull<id>,
-    display_link: id,
     renderer: MetalRenderer,
     kind: WindowKind,
     request_frame_callback: Option<Box<dyn FnMut()>>,
@@ -524,10 +523,6 @@ impl MacWindow {
             let native_view: id = msg_send![VIEW_CLASS, alloc];
             let native_view = NSView::init(native_view);
 
-            let display_link: id = msg_send![class!(CADisplayLink), displayLinkWithTarget: native_view selector: sel!(displayLayer:)];
-            let main_run_loop: id = msg_send![class!(NSRunLoop), mainRunLoop];
-            let _: () =
-                msg_send![display_link, addToRunLoop: main_run_loop forMode: NSDefaultRunLoopMode];
             assert!(!native_view.is_null());
 
             let window = Self(Arc::new(Mutex::new(MacWindowState {
@@ -535,7 +530,6 @@ impl MacWindow {
                 executor,
                 native_window,
                 native_view: NonNull::new_unchecked(native_view as *mut _),
-                display_link,
                 renderer: MetalRenderer::new(instance_buffer_pool),
                 kind: options.kind,
                 request_frame_callback: None,
@@ -694,9 +688,6 @@ impl Drop for MacWindow {
     fn drop(&mut self) {
         let this = self.0.lock();
         let window = this.native_window;
-        unsafe {
-            let _: () = msg_send![this.display_link, invalidate];
-        }
         this.executor
             .spawn(async move {
                 unsafe {
@@ -1010,6 +1001,13 @@ impl PlatformWindow for MacWindow {
         }
     }
 
+    fn invalidate(&self) {
+        let this = self.0.lock();
+        unsafe {
+            let _: () = msg_send![this.native_window.contentView(), setNeedsDisplay: YES];
+        }
+    }
+
     fn draw(&self, scene: &crate::Scene) {
         let mut this = self.0.lock();
         this.renderer.draw(scene);

crates/gpui/src/platform/test/window.rs

@@ -282,6 +282,8 @@ impl PlatformWindow for TestWindow {
         unimplemented!()
     }
 
+    fn invalidate(&self) {}
+
     fn draw(&self, _scene: &crate::Scene) {}
 
     fn sprite_atlas(&self) -> sync::Arc<dyn crate::PlatformAtlas> {