Fix #940 by updating the div spin boxes when needed Also, prevent the autoranging algo from changing the div assigment when the user is in the process of changing it. This way, we only change the div assignment during acquisition, which is when we actually need this feature.
AnalogSignal: Implement converted logic trace painting Yeah, it violates the DRY principle and isn't nice OOP-wise but it'll do for now. The entire group of Trace/Signal classes needs to be reworked anyway to support device-independent signal types anyway (think math traces and such).