Y-scale autoscale feature (with a manual trigger)

[drws]

Is your feature request related to a problem?

Sometimes the otherwise very useful discrete Y-scale levels prove to be a burden and a simple autoscale feature is desired. I need to emphasize that by no means the triggering should be automatic, the auto- part refers to calculating the adaptive (continuous) value upon triggering.

Describe the solution you'd like

It would be great to have an autoscale button besides every Y-Scale slider (or in its right-click options). The calculated scaling value should be so that the signal amplitude maximum is (exactly) at 90% of the scale. The autoscale function should also have a logic to set scaling and ofsetting correctly in case of a bipolar or a unipolar signal.

There are two points/usecases for now. The first is to ease the visual comparison between signals amplitude-wise and the second is to more efficiently use screen estate, especially with smaller screens.

Describe alternatives you've considered

Due to HDR nature of RF signals manual amplitude scaling proves to be too rough even for quick visual comparisons. I found no other alternatives in the URH.