Pan and zoom navigation history

Hello all,

I am trying to implement a back / forward history in the svg whenever a user has panned or zoomed.

I have tried to reuse the TransformHistory class from the SVGBrowser but they seem to only store the RenderingTransform at load. I need more than that.

I want to know what AffineTransform should I store so when the user hits back in order to show him where he was before.

I am also wondering how to restore the svg view to that specific point...

Thanks for all your help,
Luc