Marcel Hollerbach

EFL is a graphical framework that is used on a lot of TVs. The challenge with a TV is, that it needs to be operated with a remote control. Which means, every selectable element on the screen has to be connected to a parent element (i.e. it needs to have a way to navigate to and from itself). In other words, it can be accessed just by pressing the 4 navigation keys on your remote control.

To achieve this, graphical elements on the screen are grouped into graphs, which are then connected together after the creation process.

The talk will cover:

· how the set of graphical components (or elements) on the screen are separated into smaller graphs; · look at how they are connected together; and · show why caching calculation results is now easier to cache, than in the previous system.

Legacy displaymanagers are heavily relying on the design of the xserver, such as detecting if a window manager grabs the root window. Since wayland is getting more and more attention on modern distributions, its time for something which is, platform independent, toolkit independent and lightweight.

Legacy displaymanagers are heavily relying on the design of the xserver, such as detecting if a window manager grabs the root window. Since wayland is getting more and more attention on modern distributions, its time for something which is, platform independent, toolkit independent and lightweight.

Spawny is a software that aims for this. It has a minimal API for a reliable way of logging a user into a system. Core design decisions are: - Always giving a user the possibility to login, even after sessions are crashing - Support every single application that can be started from a tty, as a session in a greeter UI

The presentation will give a overview of a few design decisions, core features, how it works, and how to work with it.