处理焦点相关事件

src/include/xcb.h

@@ -48,6 +48,7 @@ void map_window(xcb_window_t window);
 char *get_window_name(xcb_window_t window);
 void init_window_event_mask(xcb_window_t window);
 void change_window_border_color(xcb_window_t window, uint32_t argb);
+void focus_window(xcb_window_t window);
 
 typedef struct bar_cairo_params_t {
   xcb_connection_t *conn;
@@ -95,3 +96,12 @@ void grab_keybindings(const keybinding_t *keys, const size_t length);
 bool get_xresource_uint32(const char *name, uint32_t *value);
 void get_xresource_string(const char *name, char **value, const char *fallback);
 void clean_xresource(void);
+
+typedef enum atom_t {
+  atom_wm_protocols,
+  atom_wm_delete,
+  atom_wm_take_focus,
+} atom_t;
+bool send_event(xcb_window_t window, atom_t atom);
+
+bool get_pointer_position(int32_t *x, int32_t *y);