Make dialogs visible: fake_leader, recursive reparent/map/move

- fake_leader_create: return a real frame_buf ID (was returning 0)
- client_reparent: handle frame_buf-to-frame_buf reparenting
- client_reparent: get WINGs view size from view table
- window_map: enable grandchildren (dialog content is grandchild of frame)
- window_move: move grandchildren when parent moves
- dialog.c: guard scr->w_visual for Wayland mode in Info panel

src/backend/wayland/wl_backend.c

@@ -5431,11 +5431,18 @@ wl_window_map(WNativeWindow win)
                 return;  /* parent not visible yet */
         }
         wlr_scene_node_set_enabled(&fb->scene_buf->node, true);
-        /* Also enable children */
+        /* Also enable children (and grandchildren) */
         struct wl_frame_buf *child;
         wl_list_for_each(child, &wl_state.frame_list, link) {
-            if (child->parent_id == win && child->scene_buf)
+            if (child->parent_id == win && child->scene_buf) {
                 wlr_scene_node_set_enabled(&child->scene_buf->node, true);
+                /* Enable grandchildren */
+                struct wl_frame_buf *gc;
+                wl_list_for_each(gc, &wl_state.frame_list, link) {
+                    if (gc->parent_id == child->id && gc->scene_buf)
+                        wlr_scene_node_set_enabled(&gc->scene_buf->node, true);
+                }
+            }
         }
         return;
     }
@@ -5500,7 +5507,7 @@ static void wl_window_move(WNativeWindow win, int x, int y)
         fb->x = x; fb->y = y;
         if (fb->scene_buf)
             wlr_scene_node_set_position(&fb->scene_buf->node, x, y);
-        /* Move children that track this parent */
+        /* Move children and grandchildren */
         struct wl_frame_buf *child;
         wl_list_for_each(child, &wl_state.frame_list, link) {
             if (child->parent_id == win) {
@@ -5509,6 +5516,17 @@ static void wl_window_move(WNativeWindow win, int x, int y)
                 if (child->scene_buf)
                     wlr_scene_node_set_position(&child->scene_buf->node,
                                                 child->x, child->y);
+                /* Grandchildren */
+                struct wl_frame_buf *gc;
+                wl_list_for_each(gc, &wl_state.frame_list, link) {
+                    if (gc->parent_id == child->id) {
+                        gc->x = child->x + gc->rel_x;
+                        gc->y = child->y + gc->rel_y;
+                        if (gc->scene_buf)
+                            wlr_scene_node_set_position(&gc->scene_buf->node,
+                                                        gc->x, gc->y);
+                    }
+                }
             }
         }
         return;
@@ -5714,6 +5732,7 @@ wl_client_adopt_attributes(WNativeWindow win, unsigned long event_mask)
 static void
 wl_client_reparent(WNativeWindow client, WNativeWindow new_parent, int x, int y)
 {
+
     /* For WINGs internal windows: create a child frame_buf so the dialog
      * content is visible in the scene graph. */
     if (client >= 0x20000000 && new_parent >= 0x10000000) {
@@ -5737,9 +5756,11 @@ wl_client_reparent(WNativeWindow client, WNativeWindow new_parent, int x, int y)
         }
 
         /* Create a new frame_buf for this WINGs view.
-         * We don't know the size yet — use parent's content area. */
-        int w = parent_fb->width;
-        int h = parent_fb->height - y;
+         * Get size from the view itself. */
+        extern W_View *W_GetViewForWindow(unsigned long id);
+        W_View *view = W_GetViewForWindow((unsigned long)client);
+        int w = view ? view->size.width : parent_fb->width;
+        int h = view ? view->size.height : (parent_fb->height - y);
         if (w <= 0) w = 1;
         if (h <= 0) h = 1;
 
@@ -5775,6 +5796,20 @@ wl_client_reparent(WNativeWindow client, WNativeWindow new_parent, int x, int y)
         extern void W_SetViewBacking(unsigned long id, void *img);
         W_SetViewBacking((unsigned long)client, fb->image);
     }
+    /* Reparent an existing frame_buf into a new parent */
+    else if (client >= 0x10000000 && new_parent >= 0x10000000) {
+        struct wl_frame_buf *fb = frame_buf_find(client);
+        struct wl_frame_buf *parent_fb = frame_buf_find(new_parent);
+        if (fb && parent_fb) {
+            fb->parent_id = new_parent;
+            fb->rel_x = x;
+            fb->rel_y = y;
+            fb->x = parent_fb->x + x;
+            fb->y = parent_fb->y + y;
+            if (fb->scene_buf)
+                wlr_scene_node_set_position(&fb->scene_buf->node, fb->x, fb->y);
+        }
+    }
 }
 
 /* Called by WINGs after a view repaints — commit its frame_buf to scene graph */
@@ -5923,7 +5958,29 @@ wl_icccm_free_command(char **argv)
 /* Fake leader                                                         */
 /* ------------------------------------------------------------------ */
 
-static WNativeWindow wl_fake_leader_create(WScreen *scr) { (void)scr; return WNATIVE_NONE; }
+static WNativeWindow wl_fake_leader_create(WScreen *scr)
+{
+    (void)scr;
+    /* Create a frame_buf to act as the dialog's content container */
+    struct wl_frame_buf *fb = wmalloc(sizeof(*fb));
+    memset(fb, 0, sizeof(*fb));
+
+    fb->id        = wl_state.next_synthetic_id++;
+    fb->parent_id = 0;
+    fb->width     = 1;
+    fb->height    = 1;
+    fb->image     = pixman_image_create_bits(PIXMAN_a8r8g8b8, 1, 1, NULL, 0);
+    wlr_buffer_init(&fb->base, &frame_buf_impl, 1, 1);
+
+    if (wl_state.scene) {
+        fb->scene_buf = wlr_scene_buffer_create(&wl_state.scene->tree, &fb->base);
+        if (fb->scene_buf)
+            wlr_scene_node_set_enabled(&fb->scene_buf->node, false);
+    }
+
+    wl_list_insert(&wl_state.frame_list, &fb->link);
+    return fb->id;
+}
 static void wl_fake_leader_destroy(WNativeWindow win) { (void)win; }
 
 /* ------------------------------------------------------------------ */