declared interfaces and more wrappers

src/resource.rs

@@ -0,0 +1,39 @@
+//SPDX: GPL-2.0-only
+
+use std::io;
+use std::ptr::NonNull;
+
+use crate::Wrapper;
+use crate::client::Client;
+use crate::ffi::{wl_resource, wl_resource_create,wl_interface};
+use crate::interface::{WaylandInterface,Interface};
+
+pub struct Resource {
+    raw: NonNull<wl_resource>,
+}
+impl Resource {
+    pub(crate) fn from_raw(raw: *mut wl_resource) -> Option<Self> {
+        NonNull::new(raw).map(| raw| Self { raw })
+    }
+
+    pub fn new<I: WaylandInterface>(client: &Client, id: u32, interface: &Interface<I>) -> io::Result<Self> {
+        let ptr = unsafe { wl_resource_create(
+            client.as_raw_ptr(), 
+            interface.get_raw().as_ptr(), 
+            interface.get_raw().read().version,
+            id
+        )};
+
+        let Some(raw) = NonNull::new(ptr) else {
+            return Err(io::Error::last_os_error());
+        };
+        Ok(Self { raw })
+    }
+}
+impl Wrapper for Resource {
+    type T = wl_resource;
+
+    fn get_raw(&self) -> std::ptr::NonNull<Self::T> {
+        self.raw
+    }
+}