Thumbnail/Resize size in album templates? Not current but config value

Hi there,

I'd like know how to get information about the currently configured thumbnail and resized pixel sizes on per theme basis. I want to use the height information to set sizes on row elements and the width for columns.

I'd prefer to have a solution in theme.inc and make these sizes available to smarty somehow.

Since I am newbie I don't quiet know where to get that information elegantly. I figured out that this information resides in g2_DerivativePrefsMap but perhaps there's already some callback to this.

If not I assume I have to query this from the database but I am sure there's an API connection to this already.

Any hints?

TIA