chore: add rwh-6 feature

Cargo.toml

@@ -21,6 +21,7 @@ sctk = { package = "smithay-client-toolkit", git = "https://github.com/Smithay/c
 wayland-backend = { version = "0.3.3", default_features = false, features = [
     "client_system",
 ] }
+raw-window-handle = { version = "0.6", optional = true }
 
 [dev-dependencies]
 dirs = "5.0.1"
@@ -32,6 +33,7 @@ thiserror = "1.0.57"
 url = "2.5.0"
 
 [features]
-default = ["dlopen", "dnd"]
+default = ["dlopen", "dnd", "rwh-6"]
+rwh-6 = ["raw-window-handle"]
 dnd = []
 dlopen = ["wayland-backend/dlopen"]

src/dnd/mod.rs

@@ -34,6 +34,16 @@ impl<T: RawSurface> DndSurface<T> {
     }
 }
 
+#[cfg(feature = "rwh-6")]
+impl<'a> RawSurface for raw_window_handle::WindowHandle<'a> {
+    unsafe fn get_ptr(&mut self) -> *mut c_void {
+        match self.as_raw() {
+            raw_window_handle::RawWindowHandle::Wayland(handle) => handle.surface.as_ptr().cast(),
+            _ => panic!("Unsupported window handle type."),
+        }
+    }
+}
+
 impl RawSurface for WlSurface {
     unsafe fn get_ptr(&mut self) -> *mut c_void {
         self.id().as_ptr().cast()