Top Hat Question (XCSoar?)

when I have used both XCSoar and Top hat they have both done exactly what you are asking for. My setting are
Look pages Infoboxes is set to auto
and

look infoboxes use final glide mode off

I also have different infoboxes for cruise mode and circling mode

make sure you are using the Advanced mode menue

when I am flying straight it is in cruise mode and zoomed out. then I start thermaling and it goes to circling mode and zooms into whatever zoom I used in the last thermal. Then when I leave the thermal it zooms out to whatever zoom I was at before the thermal. Just remember it will the zoom both in and out of circling mode are sticky so they will go back to what you were using the last time it was in that mode. Also you can test this out by replying an igc file at 1 or 2 times speed. If you replay at to fast a speed it won't trip the switch between cruise and climb.
Also in the GLide Computer Experimental section, you can adjust the averaging time as well as turn radios that trips both going into and out of circling mode.