Fedora, GNOME, Uncategorized

Dark Adwaita and HighContrast Themes for Qt

One of our goals for Fedora Workstation is to run Qt applications in GNOME as seamlessly as possible. Their look should be as close to their GTK+ counterparts as possible, you shouldn’t have to set things on two different places just to make the change in both GTK+ and Qt applications.

A while back, we introduced the Adwaita theme for Qt and QGnomePlatform which makes sure all settings get translated from the GTK+ world to the Qt one. The original Adwaita theme was written from scratch. To write a theme for Qt is pretty complex and the look of Adwaita for Qt was close to Adwaita for GTK+, but not close enough. Then Martin Bříza, who is working on this, decided to change the approach and based the new version on the default KDE theme and kept changing it until he got a theme that is very similar to Adwaita for GTK+. And indeed it’s now much closer than the first version.

Martin also worked on the dark variant of Adwaita for Qt, so that if you switch to this variant, Qt apps still don’t look out of place. Or if there is a Qt app that uses a dark theme it can have a look that fits into GNOME.

Martin didn’t stop there. GNOME also offers a high contrast theme for those with visual impairment which prevents them from using standard themes. They’re also not left behind. If you switch to the HighContrast theme in GNOME Qt apps will switch to it, too.

On the video below, you can see a mix of Qt and GTK+ apps and how they change when you switch between different themes:

These changes should land in Fedora 26 Workstation, but you can already try them out. Martin created a Copr repository. Keep in mind it’s work in progress. If you’d like to report bugs or help with tuning the themes, all the code is on Github.


Dark title bars for apps with dark UI

I really like the polished look of GNOME and its default theme Adwaita, but there is one thing that has been bugging me for some time. By default server side window decorations are light and if an app has a dark UI and uses a server side window decorations, you get a dark window with a light title bar. It doesn’t look every nice and when you maximize the window, it’ll get even worse because you get a nice black-and-white hamburger (black top bar, light title bar, and dark window content).

There are quite a few apps suffering from this: Atom, Firefox Developer Edition, Blender,…

But Mutter actually allows the clients to set a theme for their window decorations even though they’re rendered on the server side. They just need to set an x window property GTK_THEME_VARIANT=dark.

And I think the difference speaks for itself:



You can test it by executing: xprop -f _GTK_THEME_VARIANT 8u -set _GTK_THEME_VARIANT dark

and clicking the window where it should apply.

Are you a user of one of the apps that would benefit from it? Or even a contributor? Try to convince the project to implement this tiny change. If you’re a distro maintainer of such an app, you may consider applying a small patch.

Fedora, GNOME, LibreOffice, Linux

Installing flatpaks gets easier in Fedora 25

A lot of users complained that installing flatpaks was too difficult. And they were right, just look at the installation instructions on the Flatpak download page at LibreOffice.org. But that was never meant to be the final user experience.


Richard Hughes integrated Flatpak support into GNOME Software and the Red Hat desktop apps team worked with him to make sure it works well with apps we’ve already packaged for Flatpak. And this is the result. As you can see installing LibreOffice for Flatpak is now a matter of a couple of clicks with GNOME Software 3.22.2 in Fedora 25:


Flatpak allows you to generate a .flatpak bundle which includes the app and all the necessary info for installation of the app and setting up its repo for future updates. You can also create a .flatpakref file which doesn’t contain the app, but all the installation info and the app is downloaded during the installation. This format is also supported by GNOME Software now. LibreOffice offers a .flatpak bundle because it’s more similar to what users are used to from Windows and macOS.

As you can see on the video, installing .flatpak bundles is a matter of downloading the file and opening it directly with GNOME Software or double-clicking it. There is one prerequisite though. You need to have a repo of the runtime the app requires enabled which I had because I had been using the GNOME runtime for other apps already. Installation of runtimes is being streamlined as well. As a runtime provider, you can ship .flatpakrepo file which includes necessary info for setting up the repo and is as easy to install as .flatpak and .flatpakref. For Fedora Workstation we’re currently considering to enable repos of most common runtimes by default, so users would not have to deal with them at all, the required runtimes would get installed automatically with the app.

Fedora, GNOME, Linux, Red Hat

GNOME 3.22/KDE Plasma 5.8 release party in Brno

Last Thursday, we organized a regular Linux Desktop Meetup in Brno and because two major desktop environments had had their releases recently we also added a release party to celebrate them.

The meetup itself took place in the Red Hat Lab at FIT BUT (venue of GUADEC 2013) and it consisted of 4 talks. I spoke on new things in GNOME 3.22, our KDE developer Jan Grulich spoke on new things in Plasma 5.8, then Oliver Gutierrez spoke on Fleet Commander and the last talk was given by Lucie Karmova who is using Fedora as a desktop in a public organization and shared her experiences with the Linux desktop.


After the talks, we moved to the nearby Velorex restaurant to celebrate the releases. The whole event attracted around 25 visitors which is definitely above the average attendance of our meetups. Let’s see if we can get the same number of people to the meetup next month.

Last, but not least I’d like to thank the Desktop QA team of Red hat for sponsoring the food and drinks at the release party.


GNOME, Red Hat

We’re looking for a GNOME developer

We in the Red Hat desktop team are looking for a junior software developer who will work on GNOME. Particularly in printing and document viewing areas of the project.

The location of the position is Brno, Czech Republic, where you’d join a truly international team of desktop developers. It’s a junior position, so candidates just off the university, or even still studying are welcome. We require solid English communication skills and experience with C (and ideally C++, too). But what is a huge plus is experience with GNOME development and participation in the community.

Interested? You can directly apply for the position at jobs.redhat.com or if you have any question, you can write me: eischmann [] redhat [] com.


Fedora, GNOME, Uncategorized

Batch file renaming in Nautilus

I and Carlos Soriano, the upstream maintainer of Nautilus, have been discussing if batch file renaming is a feature that makes a sense for the default file browser in GNOME and Fedora.

I’ve seen quite a few users complaining/wishing for the feature and competition has it. Finder in OS X has probably the most advanced batch file renaming, but Windows Explorer and Dolphin can do it to some degree, too.

There are a couple of plugins that add the feature to Nautilus, but they’re not actively maintained, they haven’t been for years. So if we want to make this feature available to users, it’s probably better to include it in Nautilus directly than relying on any of these plugins.

Is is something you miss in Nautilus? Do you use any other tool or even the Nautilus plugins to perform such a task? What are use cases typical Nautilus users have for such a feature?


FUDCon APAC 2014 in Beijing

I planned to go to a FUDCon APAC or LATAM for some time because a lot of people told me they had a very different atmosphere from the ones in NA and EMEA and now Flock. I decided for FUDCon in Beijing this year and Jaroslav Reznik joined me. Originally, we planned it as holidays. But then the organizers asked us to do a keynote and we were invited to the Beijing office of Red Hat to do a presentation, so it wasn’t completely holidays in the end.

I must say that I was very positively surprised. The conference was very, very well organized. Co-hosting FUDCon with GNOME.Asia was also a very good idea. It attracted more people and more contributors of both projects. And it also made sense from the topic point of view because Fedora and GNOME definitely have some overlap.

Booth area. ©Tommy He



We arrived on May 22 and didn’t have any problem to find the hotel mainly due to great information in the Guidebook app that was prepared by the organizers. The Beijing subway is one of the best I’ve seen and it’s extremely cheap. One unlimited ride is just for $.30! We had surprisingly big problems to communicate. Almost no one in Beijing understands English and if someone does it’s also quite challenging to communicate with him/her because the languages are so different. The Chinese characters were also a big challenge. Unlike with the Latin alphabet where you can get at least a bit of the sense even if you don’t understand the language the Chinese characters were completely untranslatable for us. Fortunately, I found an Android app Hanping Camera that scans Chinese characters and translates them to English. I also downloaded an offline vocabulary for Google Translate so that I can translate what I needed to say to someone who didn’t understand English. As I know from English-Czech translations Google Translate is not perfect, but it worked quite well. Definitely better than nothing and our Chinese language skill were really non-existent.

I met most of the attending Fedora contributors at the FUDPub. It was a nice event, but the pub didn’t have cold beer. They had everything (soft drinks, teas,…) in a fridge, only beer was outside. Quite a paradox. So after a while a bunch of Fedora contributors moved back to the hotel in need for cold beer 🙂
The next day in the morning, we had our keynote. We talked on Fedora.NEXT changes. Jaroslav talked more about changes in the technologies, I was talking more about the people part of the project. Unfortunately, we probably overestimated the knowledge of attendees and I was told several times after the keynote that it might have been too complicated. Maybe we should have gone for some general topic.

On the stage during our keynote.
On the stage during our keynote. ©Tommy He

I also attended several other Fedora talks such Fedora Websites by Robert Mayr, Fedora Women by Nitesh Narayanlal, Life of Translator by Tommy He, Hackfest: Packaging a ROS Groovy SCL for Fedora by Ankur Sinha. What was quite interesting was the talk “Re-rolling Fedora with Conary” by Martin Bähr. I’d never heard of Conary before, actually I had, but I didn’t know any details. There were some useful features which can be used in Fedora. Collections of packages might be useful in Rawhide where users could update to the lastest tested collection of packages and avoid breakages. On the other hand, it wouldn’t work with the way Fedora repositories are done today when you only have the initial and the latest version of a package in the repositories, nothing between. This also prevents using Conary for rollbacks. I can also see some feature overlap with OSTree although Conary seems to be more package based.
The conference was closed by a dinner for organizers and speakers in a nearby hotel and I must say it was probably the best buffet I’ve ever had at an open source conference.

Us with the local Fedora community.
Us with the local Fedora community. ©Tommy He

On Monday, we went to the Red Hat office to give a talk on cooperation with universities and on Fedora activities. I was quite surprised that not so many redhatters are involved in the local Fedora community. It’s quite different from e.g. the Czech Republic where redhatters are the backbone of the local community. I hope our talk showed a way and at least a bit contributed to improvement.

On Tuesday, we went to the office again to give a presentation about our country. It was interesting to see that the Chinese redhatters were surprised that Škoda is actually a Czech brand, not Chinese, that we also have dumplings, but quite different from the Chinese ones, and that our country is mostly atheistic. After the presentation, we went to Beijing Linux User Group meeting which was special this time because there were still a lot of foreigners that came for FUDCon or GNOME.Asia.

From Wednesday to Sunday, we explored Beijing and its neighourhood. The temperature went up to 41C, but air conditions were apparently one of the best because there was no visible air pollution and there was even a blue sky on some days which is pretty rare according to locals.

I really want to thank local organizers who did a truly great job with FUDCon APAC in Beijing and I also want to thank the Fedora Project for sponsoring our hotel accommodation during the conference. And FUDCon APAC 2015? I think we should start thinking about it as soon as possible so that it’s as successful as this year’s one.