Hey. I've written a proposal on the topic : "Click To Dial Popup Window for the Linux Desktop" for GSoC. I have also submitted the draft on the GSoC portal.
Would appreciate any feedback or feature requests
GSoC Dialer proposal https://docs.google.com/document/d/1TdIx_PHXlsoW6vooGYNVMss1PuZsgOsnXgBdRlSVvA8/edit?usp=drive_web
Thanks, Vishal Gupta py-ranoid.github.io/Resume