GNOME Shell & Mutter

Development blog for GNOME Shell and Mutter
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Understanding GNOME Shell’s focus stealing prevention
20 Sept 2024 | original ↗

Focus stealing prevention exists for two main reasons: One is security, since we need to prevent rogue apps from deceiving users into e.g. typing their password into another window. If apps can silently claim keyboard focus and open their own window over the currently focused one, this enables phishing and other similar attacks. The other …...

Notifications in 46 and beyond
23 Apr 2024 | original ↗

One of the things we’re tackling as part of the STF infrastructure initiative is improving notifications. Other platforms have advanced significantly in this area over the past decade, while we still have more or less the same notifications we had since the early GNOME 3 days, both in terms of API and feature set. There’s … Continue reading...

Extensions in GNOME 45
2 Sept 2023 | original ↗

By now it is probably no longer news to many: GNOME Shell moved from GJS’ own custom imports system to standard JavaScript modules (ESM). Imports? ESM? JavaScript originated in web browsers to add a bit of interactivity to otherwise static pages. There was no need to split up small code snippets into multiple files, so … Continue reading...

GNOME Shell styling changes: A PSA for theme authors
26 Jul 2023 | original ↗

TL;DR: The gnome-shell-sass repository is no longer getting updated upstream. Background As gnome-shell’s CSS grew more complex, designers needed something more expressive, so they started compiling the stylesheet from SASS. The sources were moved to a subproject, so they could be shared between the regular stylesheet and the GNOME Classic...

Vivid colors in Brno
4 May 2023 | original ↗

Co-authored by Sebastian Wick & Jonas Ådahl. During April 24 to 26 Red Hat invited people working on compositors and display drivers to come together to collaborate on bringing the Linux graphics stack to the next level. There were three high level topics that were discussed at length: Color Management, High Dynamic Range (HDR) and … Continue...

Ensuring steady frame rates with GPU-intensive clients
30 Mar 2023 | original ↗

On Wayland, a surface is the basic primitive used to build what users refer to as a “window”. Wayland clients define their contents by attaching buffers to surfaces. This turns the contents of the buffer into the current surface contents. Wayland clients are free to attach a new buffer to a surface anytime. When a … Continue reading "Ensuring...

Automated testing of GNOME Shell
2 Dec 2022 | original ↗

Automated testing is important to ensure software continues to behave as it is intended and it’s part of more or less all modern software projects, including GNOME Shell and many of the dependencies it builds upon. However, as with most testing, we can always do better to get more complete testing. In this post, we’ll … Continue reading...

GNOME Shell on mobile: An update
9 Sept 2022 | original ↗

It’s been a while since the last update on GNOME Shell mobile, but there’s been a huge amount of progress during that time, which culminated in a very successful demo at the Prototype Fund Demo Day last week. ​The current state of the project is that we have branches with all the individual patches for … Continue reading "GNOME Shell on mobile:...

Towards GNOME Shell on mobile
30 May 2022 | original ↗

As part of the design process for what ended up becoming GNOME 40 the design team worked on a number of experimental concepts, a few of which were aimed at better support for tablets and other smaller devices. Ever since then, some of us have been thinking about what it would take to fully port … Continue reading "Towards GNOME Shell on mobile"

An Eventful Instant
8 Dec 2021 | original ↗

Artist, gamers, rejoice! GNOME Shell 42 will let applications handle input events at the full input device rate. It’s a long story Traditionally, GNOME Shell has been compressing pointer motion events so its handling is synchronized to the monitor refresh rate, this means applications would typically see approximately 60 events per second (or 144...

Extensions Rebooted: Porting your existing extensions to GNOME 40
20 Mar 2021 | original ↗

This will be the first blog post in a series to help get extensions quickly updated after each release. While communications have been quiet, we have not been idle! For the past few months, we have been working on building the structure to building a robust extensions community. GNOME 40 will be released soon and … Continue reading "Extensions...

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