- connect(t.get(), SIGNAL(text_changed()), this, SLOT(update()));
+ connect(t.get(), SIGNAL(visibility_changed()),
+ this, SLOT(on_trace_changed()));
+ connect(t.get(), SIGNAL(text_changed()),
+ this, SLOT(on_trace_changed()));
+ connect(t.get(), SIGNAL(colour_changed()),
+ this, SLOT(update()));