http://wiki.maemo.org/Miniature never made it to a proper release but the few people that I found that tested it and followed the project said that there was some good stuff in there. mikhas had a non-easy time back in the day dealing directly with QGraphicsView but now with Qt Quick the UI part should be simpler. How much of the backend can be reused, I don't know.

Bumping up this thread, just in case there is some steam left.