feat(tray): tray_init 传入背景颜色

src/backend/x11/backend.c

@@ -848,7 +848,15 @@ backend_bar_window_t backend_create_bar_window(
     fatal("cannot create cairo context: %s", cairo_status_to_string(statue));
   }
 
-  if (enable_tray) tray_init(backend, window_id, width, height);
+  if (enable_tray) {
+    tray_host_window_t host_window = {
+      .window = window_id,
+      .width = width,
+      .height = height,
+      .bg_pixel = bg_pixel,
+    };
+    tray_init(backend, host_window);
+  }
 
   return (backend_bar_window_t){
     .window_id = window_id,

src/backend/x11/tray.c

@@ -238,12 +238,6 @@ static bool tray_intern_selection_atom(tray_host_t *tray, backend_t *backend) {
   return true;
 }
 
-typedef struct tray_host_window_t {
-  xcb_window_t window;
-  int32_t width;
-  int32_t height;
-} tray_host_window_t;
-
 static bool tray_create_container_window(
   tray_host_t *tray,
   backend_t *backend,
@@ -266,7 +260,7 @@ static bool tray_create_container_window(
                         XCB_CW_OVERRIDE_REDIRECT | XCB_CW_EVENT_MASK |
                         XCB_CW_COLORMAP;
   xcb_create_window_value_list_t value_list = {
-    .background_pixel = 0,
+    .background_pixel = host_window.bg_pixel,
     .border_pixel = 0,
     .override_redirect = true,
     .event_mask =
@@ -360,12 +354,7 @@ static void tray_broadcast_manager(tray_host_t *tray, backend_t *backend) {
   xcb_send_event(conn, false, root, event_mask, (char *)&event);
 }
 
-void tray_init(
-  backend_t *backend,
-  xcb_window_t host_window,
-  int32_t host_width,
-  int32_t host_height
-) {
+void tray_init(backend_t *backend, tray_host_window_t host_window) {
   auto tray = get_tray_host(backend);
   if (!tray) {
     tray = p_new(tray_host_t, 1);
@@ -376,12 +365,7 @@ void tray_init(
 
   if (!tray_intern_selection_atom(tray, backend)) return;
 
-  tray_host_window_t host_window_params = {
-    .window = host_window,
-    .width = host_width,
-    .height = host_height
-  };
-  if (!tray_create_container_window(tray, backend, host_window_params)) return;
+  if (!tray_create_container_window(tray, backend, host_window)) return;
   if (!tray_take_selection_owner(tray, backend)) {
     tray_cleanup(backend);
     return;
@@ -389,11 +373,11 @@ void tray_init(
 
   tray->enabled = true;
   tray->initialized = true;
-  tray->host_window = host_window;
-  tray->icon_size = host_height;
+  tray->host_window = host_window.window;
+  tray->icon_size = host_window.height;
 
   tray_broadcast_manager(tray, backend);
-  tray_layout_icons(backend, host_width);
+  tray_layout_icons(backend, host_window.width);
   xcb_flush(backend->conn);
 }
 

src/backend/x11/tray.h

@@ -9,13 +9,14 @@ extern const tray_api_t tray_api;
 
 typedef struct backend_t backend_t;
 
-/* TODO: 添加窗口背景色 */
-void tray_init(
-  backend_t *backend,
-  xcb_window_t host_window,
-  int32_t host_width,
-  int32_t host_height
-);
+typedef struct tray_host_window_t {
+  xcb_window_t window;
+  int32_t width;
+  int32_t height;
+  uint32_t bg_pixel;
+} tray_host_window_t;
+
+void tray_init(backend_t *backend, tray_host_window_t host_window);
 void tray_cleanup(backend_t *backend);
 
 bool tray_handle_client_message(