70ee3ad47c
If we're fading a view with weston_fade_run() and half way through we want to unfade it we can use weston_fade_update() to set a new alpha target. When the animation finishes, reset_alpha() is called which ensures the alpha value of the view is exactly as requested. Although weston_fade_update() was updating the spring target so the animation would look fine, it would then reset to the alpha target given in the first call to weston_fade_run().
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 building weston and its dependencies. The test suite can be invoked via `make check`; see http://wayland.freedesktop.org/testing.html for additional details.