窗口管理器状态机设计

src/wm.h

@@ -0,0 +1,26 @@
+#pragma once
+
+#include "types.h"
+
+typedef struct wm_t {
+  bool need_restart;
+  GMainLoop *loop;
+
+  client_t *client_list;
+  client_t *client_stack_list;
+  client_t *client_focused;
+  monitor_t *monitor_list;
+  monitor_t *current_monitor;
+
+  xcb_connection_t *xcb_conn;
+  xcb_screen_t *screen;
+  int default_screen;
+  bool have_xfixes;
+  bool have_xinerama;
+  bool have_randr;
+} wm_t;
+
+extern wm_t wm;
+
+void wm_restart(void);
+void wm_quit(void);