decompose wl_backend.c: extract wl_xdisplay.c

src/Makefile.am

@@ -177,7 +177,8 @@ wmaker_SOURCES += \
 	backend/wayland/wl_focus.c \
 	backend/wayland/wl_screen.c \
 	backend/wayland/wl_shm.c \
-	backend/wayland/wl_wings.c
+	backend/wayland/wl_wings.c \
+	backend/wayland/wl_xdisplay.c
 endif
 
 if USE_NESTED_FUNC

src/backend/wayland/wl_backend.c

@@ -2145,14 +2145,7 @@ wl_handle_x11_events(int fd, uint32_t mask, void *data)
     return 0;
 }
 
-/* Public accessor for the XWayland Display* — used by screen.c to create
- * an RContext for texture rendering without exposing wl_state globally. */
-Display *wl_get_x_display(void)
-{
-    return wl_state.x_display;
-}
-
-static void *
+void *
 wl_display_open(const char *name)
 {
     const char *sock;

src/backend/wayland/wl_types.h

@@ -554,3 +554,4 @@ void wm_shm_surface_commit(struct wm_shm_surface *s, struct wlr_scene_tree *pare
 void wm_shm_surface_destroy(struct wm_shm_surface *s);
 WMScreen *wl_get_wmscreen(void);
 void wl_wings_dispatch(int timeout_ms, void *ud);
+Display *wl_get_x_display(void);

src/backend/wayland/wl_xdisplay.c

@@ -0,0 +1,14 @@
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+#include <X11/Xlib.h>
+#include "wl_types.h"
+
+
+/* Public accessor for the XWayland Display* — used by screen.c to create
+ * an RContext for texture rendering without exposing wl_state globally. */
+Display *wl_get_x_display(void)
+{
+    return wl_state.x_display;
+}
+