50e6569699
Client message observers 6/6 When the client code receives an event message for an unknown (or zombie) object, the code was logging a message only to stderr, and only if debug_client was set. Introduce a helper function to create some temporary wl_closure and related structures so that the unknown message can be sent out using the new client observer API. This allows the client implementation to potentially log it somewhere more useful than to just stderr, and it can register an observer at any time too. Note that the message that is logged is now structured slightly differently, though it contains the same content. Signed-off-by: Lloyd Pique <lpique@google.com> |
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Wayland
Wayland is a project to define a protocol for a compositor to talk to its clients as well as a library implementation of the protocol. The compositor can be a standalone display server running on Linux kernel modesetting and evdev input devices, an X application, or a wayland client itself. The clients can be traditional applications, X servers (rootless or fullscreen) or other display servers.
The wayland protocol is essentially only about input handling and buffer management. The compositor receives input events and forwards them to the relevant client. The clients creates buffers and renders into them and notifies the compositor when it needs to redraw. The protocol also handles drag and drop, selections, window management and other interactions that must go through the compositor. However, the protocol does not handle rendering, which is one of the features that makes wayland so simple. All clients are expected to handle rendering themselves, typically through cairo or OpenGL.
Building the wayland libraries is fairly simple, aside from libffi, they don't have many dependencies:
$ git clone https://gitlab.freedesktop.org/wayland/wayland
$ cd wayland
$ meson build/ --prefix=PREFIX
$ ninja -C build/ install
where PREFIX is where you want to install the libraries.
See https://wayland.freedesktop.org for documentation.