XDG-Shell Patches Get Moving For Wayland
Written by Michael Larabel in Wayland on 27 November 2013 at 02:43 PM EST. 5 Comments
After a lot of mailing list discussions amongst developers that have a stake in Wayland and early patches sent out, the latest xdg-shell patches were formally distributed today on the developers' mailing list. The xdg-shell is a new protocol living outside of the core Wayland protocol.

The xdg_shell protocol defines new xdg_surface and xdg_popup interfaces. The xdg_surface provides a desktop-style window with move, resize, and maximization support. The xdg_popup interface provides a desktop-style pop-up/menu.

The premise of xdg_shell is more sharing of Wayland-related code and concepts amongst desktop environment developers with those implementing their own compositors for their desktop user-interfaces. Xdg-shell in relation to Wayland has been compared in nature to EWMH (Extended Window Manager Hints) to X11.

Xdg-shell is used in place of wl_shell, the core Wayland protocol's shell interface. The xdg-shell protocol isn't proposed for merging into the core Wayland protocol and is not yet a stable protocol. The xdg-shell protocol will grow as more desktops are ported to Wayland and new needs of it are discovered. The xdg-shell protocol already has input and support from GNOME and KDE desktop developers.

The set of 16 patches sent in this morning by Intel's Rafael Antognolli provide the XML-based xdg-shell protocol, an implementation of xdg-shell for the Weston compositor, and a client implementation for Wayland's toytoolkit. These new xdg-shell patches can be viewed on Wayland-devel.
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Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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