X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Fview.cpp;h=b877da1e202aaaeae210e7492ea151fdc0858155;hp=b7ee331f165c175bdaaf1080561b2ae31650644e;hb=7d5565237c8dae52b5a15d39f28b2964b6f79a5f;hpb=925763b09cd26608cf4b38ce7b44800948a0e5aa

diff --git a/pv/view/view.cpp b/pv/view/view.cpp
index b7ee331f..b877da1e 100644
--- a/pv/view/view.cpp
+++ b/pv/view/view.cpp
@@ -1038,13 +1038,15 @@ void View::signals_changed()
 					offset += extents.second;
 			}
 
-			// Assign proper vertical offsets to each channel in the group
-			new_trace_group->restack_items();
-
-			// If this is a new group, enqueue it in the new top level
-			// items list
-			if (!new_traces_in_group.empty() && new_trace_group)
-				new_top_level_items.push_back(new_trace_group);
+			if (new_trace_group) {
+				// Assign proper vertical offsets to each channel in the group
+				new_trace_group->restack_items();
+
+				// If this is a new group, enqueue it in the new top level
+				// items list
+				if (!new_traces_in_group.empty())
+					new_top_level_items.push_back(new_trace_group);
+			}
 		}
 
 	// Enqueue the remaining logic channels in a group
@@ -1083,17 +1085,26 @@ void View::signals_changed()
 		owner->remove_child_item(trace);
 	}
 
+	// Remove any empty trace groups
+	for (shared_ptr<TraceGroup> group : list_by_type<TraceGroup>())
+		if (group->child_items().size() == 0)
+			remove_child_item(group);
+
 	// Add and position the pending top levels items
 	for (auto item : new_top_level_items) {
+		add_child_item(item);
+
 		// Position the item after the last item or at the top if there is none
 		int offset = v_extents().second;
+		const pair<int, int> extents = item->v_extents();
+
+		if (item->enabled())
+			offset += -extents.first;
 
-		add_child_item(item);
 		item->force_to_v_offset(offset);
 
-		const pair<int, int> extents = item->v_extents();
 		if (item->enabled())
-			offset += (extents.second - extents.first);
+			offset += extents.second;
 	}
 
 	update_layout();