处理 clientmessage 事件和全屏窗口

src/include/xcb.h

@@ -62,6 +62,7 @@ void place_window_below_sibling(xcb_window_t window, xcb_window_t sibling);
  * @brief 关闭窗口并清理资源
  */
 void kill_window(xcb_window_t window);
+void set_window_fullscreen_state(xcb_window_t window, bool fullscreen);
 
 typedef struct bar_cairo_params_t {
   xcb_connection_t *conn;
@@ -119,6 +120,8 @@ typedef enum atom_t {
   atom_wm_delete,
   atom_wm_take_focus,
   atom_net_wm_name,
+  atom_net_wm_state,
+  atom_net_wm_fullscreen,
   atom__xrootpmap_id,
   atom_esetroot_pmap_id,
 } atom_t;