70f2901989
It's possible to touch a surface to move it and let go before we get to common_surface_move(), in which case we don't have a touch focus when we get there. For pointers, we could click a surface, but have the surface go away before we get to common_surface_move(), in which case the button count is non-zero, but we don't have a surface. In either case we crash, so let's add a check to make sure we still have a focus surface before we try to move it. Closes: https://bugs.freedesktop.org/show_bug.cgi?id=73448
Weston Weston is the reference implementation of a Wayland compositor, and a useful compositor in its own right. Weston has various backends that lets it run on Linux kernel modesetting and evdev input as well as under X11. Weston ships with a few example clients, from simple clients that demonstrate certain aspects of the protocol to more complete clients and a simplistic toolkit. There is also a quite capable terminal emulator (weston-terminal) and an toy/example desktop shell. Finally, weston also provides integration with the Xorg server and can pull X clients into the Wayland desktop and act as a X window manager. Refer to http://wayland.freedesktop.org/building.html for buiding weston and its dependencies.