1 files changed, 28 insertions, 0 deletions
diff --git a/native/src/window/id.rs b/native/src/window/id.rs
new file mode 100644
index 00000000..fa9761f5
--- /dev/null
+++ b/native/src/window/id.rs
@@ -0,0 +1,28 @@
+use std::collections::hash_map::DefaultHasher;
+use std::fmt::{Display, Formatter};
+use std::hash::{Hash, Hasher};
+
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Hash, PartialOrd, Ord)]
+/// The ID of the window.
+///
+/// This is not necessarily the same as the window ID fetched from `winit::window::Window`.
+pub struct Id(u64);
+
+impl Id {
+    /// TODO(derezzedex): maybe change `u64` to an enum `Type::{Single, Multi(u64)}`
+    pub const MAIN: Self = Id(0);
+
+    /// Creates a new unique window ID.
+    pub fn new(id: impl Hash) -> Id {
+        let mut hasher = DefaultHasher::new();
+        id.hash(&mut hasher);
+
+        Id(hasher.finish())
+    }
+}
+
+impl Display for Id {
+    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
+        write!(f, "Id({})", self.0)
+    }
+}