Add dmabuf protocol handler

Not used yet.

src/wayland/dmabuf.rs

@@ -0,0 +1,53 @@
+use cctk::{
+    sctk::{
+        self,
+        dmabuf::{DmabufFeedback, DmabufHandler, DmabufState},
+    },
+    wayland_client::{protocol::wl_buffer, Connection, QueueHandle},
+};
+
+use wayland_protocols::wp::linux_dmabuf::zv1::client::{
+    zwp_linux_buffer_params_v1::ZwpLinuxBufferParamsV1,
+    zwp_linux_dmabuf_feedback_v1::ZwpLinuxDmabufFeedbackV1,
+};
+
+use super::AppData;
+
+impl DmabufHandler for AppData {
+    fn dmabuf_state(&mut self) -> &mut DmabufState {
+        &mut self.dmabuf_state
+    }
+    fn dmabuf_feedback(
+        &mut self,
+        _conn: &Connection,
+        _qh: &QueueHandle<Self>,
+        _proxy: &ZwpLinuxDmabufFeedbackV1,
+        feedback: DmabufFeedback,
+    ) {
+        self.dmabuf_feedback = Some(feedback);
+    }
+    fn created(
+        &mut self,
+        _conn: &Connection,
+        _qh: &QueueHandle<Self>,
+        _params: &ZwpLinuxBufferParamsV1,
+        _buffer: wl_buffer::WlBuffer,
+    ) {
+    }
+    fn failed(
+        &mut self,
+        _conn: &Connection,
+        _qh: &QueueHandle<Self>,
+        _params: &ZwpLinuxBufferParamsV1,
+    ) {
+    }
+    fn released(
+        &mut self,
+        _conn: &Connection,
+        _qh: &QueueHandle<Self>,
+        _buffer: &wl_buffer::WlBuffer,
+    ) {
+    }
+}
+
+sctk::delegate_dmabuf!(AppData);