添加鼠标事件拦截

src/config.h

@@ -80,11 +80,17 @@ const rule_t rules[] = {
   },
 };
 
+#define MODIFIER_ANY XCB_MOD_MASK_ANY
 #define SUPER XCB_MOD_MASK_4
 #define ALT XCB_MOD_MASK_1
 #define CTRL XCB_MOD_MASK_CONTROL
 #define SHIFT XCB_MOD_MASK_SHIFT
 
+#define BUTTON_ANY XCB_BUTTON_INDEX_ANY
+#define BUTTON_LEFT XCB_BUTTON_INDEX_1
+#define BUTTON_RIGHT XCB_BUTTON_INDEX_2
+#define BUTTON_MIDDLE XCB_BUTTON_INDEX_3
+
 const char launcher[] =
   "rofi -show combi -modes window,drun,run,ssh,combi,windowcd";
 const keybinding_t keys[] = {
@@ -142,6 +148,11 @@ const keybinding_t keys[] = {
   {SUPER | SHIFT, XK_9, move_to_tag, {.ui = 1 << 8}},
 };
 
+const button_t buttons[] = {
+  {click_tag, 0, BUTTON_LEFT, select_tag, {0}},
+  {click_tag, SUPER, BUTTON_LEFT, move_to_tag, {0}},
+};
+
 const char *const bar_bg = "#222222";
 const char *const tag_bg = "#222222";
 const char *const active_tag_bg = "#005577";

src/include/types.h

@@ -183,3 +183,20 @@ typedef struct icons_t {
   icon_res_t cpu;
   icon_res_t clock;
 } icons_t;
+
+typedef enum click_area_t {
+  click_tag,
+  click_layout_symbol,
+  click_window_title,
+  click_status,
+  click_client_window,
+  click_root_win,
+} click_area_t;
+
+typedef struct button_t {
+  click_area_t click_area;
+  uint16_t modifiers;
+  uint8_t button;
+  void (*func)(const user_action_arg_t *);
+  const user_action_arg_t arg;
+} button_t;

src/include/xcb.h

@@ -159,3 +159,6 @@ void set_pointer_position(int32_t x, int32_t y);
  * @brief 非阻塞检查特定事件掩码（模拟 XCheckMaskEvent）
  */
 bool xcb_check_mask_event(xcb_event_mask_t event_mask);
+
+void ungrab_any_button(xcb_window_t window);
+void grab_button(xcb_window_t window, uint8_t button, uint16_t modifiers);

src/main.c

@@ -59,6 +59,7 @@ static void focus_in(focus_in_event_t *event);
 static void property_notify(property_notify_event_t *event);
 static void client_message(client_message_event_t *event);
 static void manage_window(xcb_window_t window);
+static void grab_buttons_for_client(client_t *client, bool focused);
 static void unmanage_client(client_t *client, bool destroyed);
 static void update_client_list(void);
 static void update_client_name(client_t *client);
@@ -1030,8 +1031,10 @@ void manage_window(xcb_window_t window) {
   }
 
   set_client_tag_prop(c);
+  grab_buttons_for_client(c, false);
 
   set_window_event_mask(window, false);
+
   change_window_border_color(window, color_set->border_color.argb);
 
   attach_client(c);
@@ -1048,6 +1051,18 @@ void manage_window(xcb_window_t window) {
   focus(NULL);
 }
 
+void grab_buttons_for_client(client_t *client, bool focused) {
+  ungrab_any_button(client->window);
+
+  if (!focused) grab_button(client->window, BUTTON_ANY, MODIFIER_ANY);
+
+  for (int i = 0; i < LENGTH(buttons); i++) {
+    if (buttons[i].click_area == click_client_window) {
+      grab_button(client->window, buttons[i].button, buttons[i].modifiers);
+    }
+  }
+}
+
 void unmanage_client(client_t *client, bool destroyed) {
   monitor_t *monitor = client->monitor;
 
@@ -1231,6 +1246,7 @@ void focus(client_t *client) {
     if (client->monitor != current_monitor) current_monitor = client->monitor;
     detach_stack_client(client);
     attach_stack_client(client);
+    grab_buttons_for_client(client, true);
     change_window_border_color(client->window,
                                color_set->active_border_color.argb);
     focus_window(client->window);
@@ -1244,6 +1260,7 @@ void focus(client_t *client) {
 void unfocus(client_t *client, bool set_focus) {
   if (!client) return;
 
+  grab_buttons_for_client(client, false);
   change_window_border_color(client->window, color_set->border_color.argb);
   if (set_focus) focus_window(WINDOW_NONE);
 }

src/xcb/window.c

@@ -361,3 +361,15 @@ void set_window_fullscreen_state(xcb_window_t window, bool fullscreen) {
   xcb_change_property(conn, XCB_PROP_MODE_REPLACE, window, atom,
                       XCB_ATOM_WINDOW, 32, data_len, &atom);
 }
+
+void ungrab_any_button(xcb_window_t window) {
+  xcb_ungrab_button(conn, XCB_BUTTON_INDEX_ANY, window, XCB_MOD_MASK_ANY);
+}
+
+void grab_button(xcb_window_t window, uint8_t button, uint16_t modifiers) {
+  uint8_t owner_events = false; /* 事件仅发送给抓取者，不发送给其他窗口 */
+  uint16_t event_mask =
+    XCB_EVENT_MASK_BUTTON_PRESS | XCB_EVENT_MASK_BUTTON_RELEASE;
+  xcb_grab_button(conn, owner_events, window, event_mask, XCB_GRAB_MODE_SYNC,
+                  XCB_GRAB_MODE_ASYNC, XCB_NONE, XCB_NONE, button, modifiers);
+}