+void View::enable_coloured_bg(bool state)
+{
+ const vector<shared_ptr<TraceTreeItem>> items(
+ list_by_type<TraceTreeItem>());
+
+ for (shared_ptr<TraceTreeItem> i : items) {
+ // Can't cast to Trace because it's abstract, so we need to
+ // check for any derived classes individually
+
+ shared_ptr<AnalogSignal> a = dynamic_pointer_cast<AnalogSignal>(i);
+ if (a)
+ a->set_coloured_bg(state);
+
+ shared_ptr<LogicSignal> l = dynamic_pointer_cast<LogicSignal>(i);
+ if (l)
+ l->set_coloured_bg(state);
+
+ shared_ptr<DecodeTrace> d = dynamic_pointer_cast<DecodeTrace>(i);
+ if (d)
+ d->set_coloured_bg(state);
+ }
+
+ viewport_->update();
+}
+