I would suggest the Tk::Zinc canvas.

The reasons:

1. is it is well supported. Zinc is used is used by CENA for aircraft radar. It works anywhere you can use Perl/Tk, Python/Tk,or Tcl/Tk ( and maybe others I'm unaware of) See TkZinc Homepage

2. it is the best thought out canvas when it comes to zooming and rotations of your data objects. It allows grouping of items, group rotations, precise storing and setting of positional data and rotation data, for individual items and groups. You can make "windows" in the canvas to display other widgets, like textboxes or listboxes; or you can make your custom Zinc child widgets. See Strangely addictive Tk::Zinc based game for an example of how good Zinc can look.

3. It comes with a great pdf documentation, and the maillist is quite helpful.

See a modest Zinc tutorial and look thru the great demo that comes with the module.

The only requirement of yours which it dosn't meet is "vector graphics".... but you could implement your own vector drawing language with the rotation tools that Zinc provides.