Howdy how:
Just now I got okular to recognize pinch zoom gesture (two finger zooming) after I packaged Christian Spielberger’s Qt4.8 branch with Xinput2.2 support and patches okular a little bit.
Under Tegra it’s still a bit laggy, but I guess that’s some rendering issue.
Have a look at:
https://build.opensuse.org/project/show?project=home%3Aleviathanch%3AMultitouch
Of course you may feel free to convert my packages into Debian/ArchLinux/what ever. ones in order to spread this functionality onto other distros.
RootFS-images will follow