ping pong

src/surface.rs

@@ -62,4 +62,26 @@ impl WlClient {
 
         Ok(())
     }
+
+    pub fn xdg_wm_base_pong(&mut self, event: &Vec<u8>) -> Result<(), Box<dyn Error>> {
+        if self.xdg_wm_base_id.is_none() {
+            return Err(Box::new(UnsetErr("xdg_wm_base_id".to_string())));
+        }
+        let object = self.xdg_wm_base_id.unwrap();
+        const OPCODE: u16 = 3;
+        const MSG_SIZE: u16 = 12;
+        let serial = u32::from_ne_bytes(event[0..4].try_into().unwrap());
+
+        let mut request = vec![0u8; MSG_SIZE as usize];
+        let mut offset: usize = 0;
+
+        request.write_u32(&object,	 &mut offset);
+        request.write_u16(&OPCODE,	 &mut offset);
+        request.write_u16(&MSG_SIZE, &mut offset);
+        request.write_u32(&serial,   &mut offset);
+
+        self.socket.write(&request)?;
+
+        Ok(())
+    }
 }

src/wl_client.rs

@@ -67,6 +67,9 @@ impl WlClient {
         else if self.shm_id.is_some() && header.object == self.shm_id.unwrap() && header.opcode == 0 { // wl_shm::format
             WlClient::wl_shm_format(&event);
         }
+        else if self.xdg_wm_base_id.is_some() && header.object == self.xdg_wm_base_id.unwrap() && header.opcode == 0 { // xdg_wm_base::ping
+            self.xdg_wm_base_pong(&event)?;
+        }
         else {
             println!(
                 "Received event:\n\tObject: {}\n\tOpcode: {}\n\tSize: {}",