X-Git-Url: https://sigrok.org/gitweb/?p=pulseview.git;a=blobdiff_plain;f=pv%2Fview%2Ftracetreeitemowner.cpp;h=24174794456d01ffb2fd05cbf27601cdc1e16334;hp=56433752889987d01becd4b92eb5c27cd86917cb;hb=5d6ae8a26c8d86531d0d85d2fefc67d617c73f56;hpb=a8743cd962b2d18082c6ddaeb554d56013919d95

diff --git a/pv/view/tracetreeitemowner.cpp b/pv/view/tracetreeitemowner.cpp
index 56433752..24174794 100644
--- a/pv/view/tracetreeitemowner.cpp
+++ b/pv/view/tracetreeitemowner.cpp
@@ -105,6 +105,23 @@ pair<int, int> TraceTreeItemOwner::v_extents() const
 	return extents;
 }
 
+bool TraceTreeItemOwner::reassign_bgcolour_states(bool next_bgcolour_state)
+{
+	vector< shared_ptr<TraceTreeItem> > items = trace_tree_child_items();
+
+	// Sort items according to vertical position
+	sort(items.begin(), items.end(),
+		[](const shared_ptr<TraceTreeItem> a, const shared_ptr<TraceTreeItem> b) {
+		return a->layout_v_offset() > b->layout_v_offset(); });
+
+	for (const shared_ptr<TraceTreeItem> item : items) {
+		item->set_bgcolour_state(next_bgcolour_state);
+		next_bgcolour_state = !next_bgcolour_state;
+	}
+
+	return next_bgcolour_state;
+}
+
 void TraceTreeItemOwner::restack_items()
 {
 }