Matplotlib qt backend?

Hi everyone,
Is there any planned support for a Qt-backend? We are using Qt in our project, and I would like to use Matplot lib for plotting.

If there is not any support for Qt how hard would it be to make it myself? Would it be best to base it on the Agg backend, or should I make a native Qt backend? What is the least work? Is it possible to write the whole backend in Python or should I use C++ in addition?

Sigve Tjora