Calligra 4.0.1 is out. This small releases mostly contains fixes for distributions issues and updated translations.

I fixed some compatibility issues for Flatpak which is since yesterday available on Flathub.

Yaakov Selkowitz fixed the installation of the Okular generators so now if Calligra is installed, you can read your office document in Okular correctly.

Antonio Rojas dropped the unused KPart dependency and reenabled the user documentations.

I removed the old space navigator plugin which didn’t build anymore and was only used to navigate an office document with some retro controllers.

Finally, I fixed a few issues in Stage, I found while dog footing it for my slides for my Akademy presentation.

Get It

Calligra 4.0 is now available on Flathub. It’s also now available on Arch, KDE Neon and OpenBSD and I am aware there is some work in progress for Fedora and Mageia. Thanks everyone for packaging Calligra!

Packager Section

You can find the package on download.kde.org and it has been signed with my GPG key.

Here's our bi-monthly update from KDE's personal information management applications team. This report covers progress made in July and August 2024.

Since the last report, 32 people have contributed over 1300 changes to the KDE PIM code base. We also released a new version of the KDE PIM Suite in August with the Gear release

Akademy

The KDE PIM team will be at Akademy from the 7th to the 12th of September in Würzburg (Germany). We will host again a PIM BoF on Monday from 14h to 16h.

Milestones

We have decided to plan and track our work in milestones. Milestones represent concrete goals with clear definitions of what we understand as done, and be achievable within a reasonable time frame. Each milestone is then split into smaller bite-sized tasks that can be worked on independently.

This helps us prioritize important work, make our progress more visible and, most importantly, make it easier for people to get excited about what we are working on. New contributors will also be able to pick a well-defined task and start contributing to PIM.

You can see the milestones on our Gitlab board. If anything there catches your eye and you would like to help, reach out to us on the #kontact:kde.org Matrix channel!

Retiring KJots and KNotes

We made some progress on this front and KNotes was not part of the 24.08 release. The repositories for KNotes and KJots are now archived and the remaining bits related to the Akonadi Note support were removed from KOrganizer, Calendar Support, KDE PIM Runtime, and Event Views.

Moving Protocol Implementations to KDE Frameworks

Volker continued to cleanup and optimize KMime in preparation for moving it to the KDE Frameworks. KMime is the library used to parse and write emails.

Itinerary

Our travel assistant app Itinerary got a new seat information display in the timeline, integration with the Träwelling check-in service, more use of Wikidata/Wikimedia online content and a pretty new website. See its own bi-monthly update for more details.

Kleopatra

Over the last two months the smart card views for the different types of supported smart cards got a facelift to make them look more unified and less crowded (T7018).

Kleopatra now supports disabling OpenPGP certificates (T7216). This is sometimes useful to prevent accidentally using a certificate for encryption.

We improved the usability in

• signing and encryption (T6485, T7183, T7236),
• the list of certifications that now only shows the relevant ones (T7231),
• the certificate group configuration (T6966),
• changing the expiration of subkeys (T7198, T7215).

Akregator

Akregator is the RSS feed reader integrated into Kontact. Laurent reimplemented the filter bar to avoid multiple clicks and it is now similar to the one from Thunderbird.

Akregator now supports Plasma Activities so you can select which feeds are visible depending on the activity you are in. Similar functionalities are planned for KMail, KOrganizer and KAddressBook.

Finally, Akregator now has a What's New dialog showing the changes from the last version.

KMail

KMail now uses less memory by only loading some widgets when needed.

MimeTreeParser/Merkuro

We have unified the verification message for signed messages between Kleopatra, KMail and Merkuro by moving the implementation to LibKleo.

KAlarm

We replaced the libcanberra audio backend with VLC, since libcanberra is unmaintained and does not recognise recent audio formats. There is also the option for distributions to use MPV as audio backend.

Kdenlive 24.08 is out, and while summer is usually a quieter time for the team, this update comes packed with nifty new features, enhancements, and quality-of-life improvements, specially for Effects and Transitions. This version boosts performance in sequence playback and timeline preview rendering, improves handling of transcoding issues when importing large amounts of clips, adds VAAPI transcode profiles, and fixes GPU transcoding for Nvidia. On the packaging front, Whisper support has been improved for both Windows and macOS while also improving timing issues on all platforms.

Effects and Transitions

This release comes with many improvements to Effects and Transitions that were made possible thanks to your contributions to our fundraiser.

Easing Modes

In addition to the existing easing modes (linear, smooth, and constant), we've added several new options like: Cubic In/Out, Exponential In/Out, Circular In/Out, Elastic In/Out, and Bounce In/Out for transitions and effects.

Effect Groups

The new Effect Groups feature enables you to control and apply changes to all clips within a group or selection, making the effect editing process more flexible.

Transform Effect UX

This release brings  several enhancements to the Transform effect, improving both usability and functionality. The handles’ visuals have been refined by adding more control points for easier adjustments. Now, you can move the frame from anywhere inside it, with the handles automatically disappearing during the move for a cleaner view. Also holding Alt+Click lets you cycle through clips without needing to select them in the timeline. We’ve also added a grid to the monitor, allowing clips to snap into place while moving.

Curve Editor

This version introduces an initial prototype of the highly anticipated curve editor for keyframes. Please note that it is in a very alpha state and is not ready for production.

Other Highlights

This release includes over 130 commits. Here are a few highlights:

• Fixed many Python related issues
• Fixed Titles background issues
• Added timestamps to undo commands
• Fixed many crashes in various operations
• Add Actions to quickly add Marker/Guides in a specific category
• Run callback server for OAuth2 only if necessary.
• Fixed issues with custom Clip Jobs
• Fixed audio recording regressions

For the full changelog continue reading on kdenlive.org.

Next Saturday, this year’s Akademy starts in Würzburg, Germany. After a rather long absence – the last Akademy I attended in person was in Mechelen (2008) – I am very much looking forward to meet old friends and make new ones. Mainly due to my own summer vacation plans and conflicting family matters, I was not able to make it to the event in recent years. Now, as the venue is only just over 100 kilometers from my home and I have no other commitments, I’m traveling to

My plan is to arrive on Friday late afternoon and join the welcome event. The conference schedule is pretty loaded and I have only decided on a few talks I definitely want to visit. For more, I need to take another look at the schedule and also the list of planned BoFs on Monday and Tuesday.

Topics I am interested in are (not in a particular order)

1. Getting KMyMoney to be properly build on the CI/CD for MacOS (both ARM and x86_64)
2. Meet people in person I only know from the online world
3. What is needed on the project configuration (Gitlab, metadata) side to move onto KF6

For 1. I hope to get some more background information out of the KDE’s CI and CD Infrastructure talk held by Ben, Hannah, Julius and Volker on Sunday and the CI/CD BoF on Tuesday.. For other topics I will see.

Looking forward to seeing many of you KDE fellows next week in Würzburg!

A while ago a colleague of mine asked about our crash infrastructure in Plasma and whether I could give some overview on it. This seems very useful to others as well, I thought. Here I am, telling you all about it!

Our crash infrastructure is comprised of a number of different components.

• KCrash: a KDE Framework performing crash interception and prepartion for handover to…
• coredumpd: a systemd component performing process core collection and handover to…
• DrKonqi: a GUI for crashes sending data to…
• Sentry: a web service and UI for tracing and presenting crashes for developers

We’ve looked at KCrash previously. This time we look at coredumpd.

Coredumpd

coredumpd collects all crashes happening on the system, through the core_pattern system. It is shipped as part of systemd and as such mostly available out of the box.

It is fairly sophisticated and can manage the backlog of crashes, so old crashes get cleaned out from time to time. It also tightly integrates with journald giving us a well-defined interface to access crash metadata.

But before we dive into the inner workings of coredumpd, let’s talk about cores.

What are cores?

A core, or more precisely: a core dump file, is a copy of the memory image of a process and its process status (registers, mappings, etc.) in a file. Simply put, it’s like we took a copy of the running process from RAM and stored it in a file. The purpose of such a core is that it allows us to look at a snapshot of the process at that point in time without having the process still running. Using this data, we can perform analysis of the process to figure out what exactly went wrong and how we ended up in that situation.

The advantage is that since the process doesn’t need to be running anymore, we can investigate crashes even hours or days after they happened. That is of particular use when things crash while we are not able to deal with them immediately. For example if Plasma were to crash on logout there’d be no way to deal with it besides stopping the logout, which may not even be possible anymore. Instead we let the crash drop into coredumpd, let it collect a core file, and on next login we can tell the user about the crash.

With that out of the way, it’s time to dump a core!

Core Dumps

We already talked about KCrash and how it intercepts crashes to write some metadata to disk. Once it is done it calls raise() to generate one of those core dumps we just discussed. This actually very briefly turns over control to the kernel which will more or less simply invoke the defined core_pattern process. In our case, coredumpd.

coredumpd will immediately systemd-socket-activate itself and forward the data received from the kernel. In other words: it will start an instance of systemd-coredump@.service and the actual processing will happen in there. The advantage of this is that regular systemd security configuration can be applied as well as cgroup resource control and all that jazz — the core dumping happens in a regular systemd service.

The primary task here is to actually write the dump to a file. In addition, coredumpd will also collect lots of additional metadata besides what is in the core already. Most notably various bits and pieces of /proc information such as cgroup information, mount information, the auxillary vector (auxv), etc.

Once all the data is collected a journald entry is written and the systemd-coredump@.service instance quits again.

The journal entry will contain the metadata as entry fields as well as the path of the core dump on disk, so we can later access it. It essentially serves as a key-value store for the crash data. A severely shortened version looks like this:

Tue 2024-08-27 17:52:27.593233 CEST […]
    COREDUMP_UID=60106
    COREDUMP_GID=60106
    COREDUMP_SIGNAL_NAME=SIGSYS
    COREDUMP_SIGNAL=31
    COREDUMP_TIMESTAMP=1724773947000000
    COREDUMP_COMM=wine64
    COREDUMP_FILENAME=/var/lib/systemd/coredump/core.wine64.….zst
    …

Example

Since this is all rather abstract, we can look at a trivial example to illustrate things a bit better.

Let’s open two terminals. In the first we can watch the journal for the crash to appear.

journalctl -xef SYSLOG_IDENTIFIER=systemd-coredump

In the second terminal we run an instance of sleep in the background, and then trigger a segmentation fault crash.

sleep 99999999999&
kill -SEGV $!

In the first terminal you’ll see the crash happening:

Aug 27 15:01:49 ajax systemd-coredump[35535]: Process 35533 (sleep) of user 60106 terminated abnormally with signal 11/SEGV, processing...
Aug 27 15:01:49 ajax systemd-coredump[35549]: [🡕] Process 35533 (sleep) of user 60106 dumped core.

                                              Stack trace of thread 35533:
                                              #0  0x0000729f1b961dc0 n/a (/lib/ld-linux-x86-64.so.2 + 0x1cdc0)
                                              ELF object binary architecture: AMD x86-64

So far so interesting. “But where is the additional data from /proc hiding?” you might wonder. We need to look at the verbose entry to see all data.

journalctl -o verbose SYSLOG_IDENTIFIER=systemd-coredump

This actually already concludes coredumpd’s work. In the next post DrKonqi will step onto the stage.

Here at KDE neon tower we have been busy rebasing our KDE software builds from Ubuntu 22.04 (jammy) to Ubuntu 24.04 (noble). This always takes longer than you’d think, mostly because it’s a moving target so we also have to keep updating the incoming releases from Plasma, Frameworks, Gear and even Calligra. We had a couple of delays when Jonathan caught Covid (4 years after it was worth sympathy to do so) and then the build server had issues and needed itself rebuilding. But the package archives are there and the Docker images are there and today the first ISO got built which boots successfully. Next steps are making sure all the software is up to date and getting the upgrade solid. Be with you soon!

Calligra is the office and graphics suite developed by KDE and is the successor to KOffice. With some traditional parts like Kexi and Plan having an independent release schedule, this release only contains the four following components:

• Calligra Words: Word Processor
• Calligra Sheets: Spreadsheet Application
• Calligra Stage: Presentation Application
• Karbon: Vector Graphics Editor

The most significant updates are that Calligra has been fully transitioned to Qt6 and KF6, along with a major overhaul of its user interface.

General

Words, Sheets, and Stage now feature a new sidebar design. Currently, this is implemented using a proxy style, which will no longer be necessary once the related merge request in Breeze is merged.

I revamped the content of each sidebar tab, addressing various visual glitches and making the spacing much more consistent.

The “Custom Shape” docker has been removed, and custom shapes are now accessible through a popup menu in the toolbar across all Calligra applications.

Regarding the toolbar, I streamlined the default layout by removing basic actions like copy, cut, and paste.

The settings dialogs were also cleaned up and are now using the new FlatList style also used by System Settings and most Kirigami applications.

Words

Word now features the new sidebar design, and the main view uses a shadow to define the document borders.

The Style Manager and Page Layout dialog were also updated.

Stage

Stage didn’t really change aside of the sidebar redesign. But I am using it to work on my slides for Akademy and it is a pretty solid choice.

The tooltip for the slides are now compatible with Wayland.

Calligra Sheets

As part of the Qt6 port, Sheets lost its scripting system based on the unmaintained Kross framework. In the future, it would be possible to add Python scriping, thanks to the work of Manuel Alcaraz Zambrano on getting Python bindings for the KDE Frameworks.

Visually a noticable change is that the cell editor moved from a docker positioned on the left of the spreadsheet view by default to a normal widget on the top. This takes a lot less space which can be used by the spreadsheet.

Karbon

Karbon didn’t received much change outside of the one affecting the whole platform.

Launcher

The intial window when opening one of the Calligra application was redesign and adopted the new “frameless style”.

Other

• Braindump is now able to compile again, but since it lacks an active maintainer, the component is disabled in release builds.

• The webshape plugin has been ported from the outdated QtWebkit module to QtWebEngine and is no longer exclusive to Braindump. This means you can now embed websites directly into your word documents, slides, and spreadsheets.

• The AppStream id of every components is prefixed by org.kde.calligra. This allow Flatpak to expose every Calligra applications to your application launcher.

Get Involved

Calligra needs your support! You can contribute by getting involved in development, providing new or updated templates, or making a donation to KDE e.V.. Join the discussion in our Matrix channel.

Credits

This release would not have been possible without the high quality mockups provided by Manuel Jesús de la Fuente. Also big thanks to everyone who contributed to this Calligra release: Evgeniy Harchenko, Dmitrii Fomchenkov and bob sayshilol.

Packager Section

You can find the package on download.kde.org and it has been signed with my GPG key.

Project Recap

As my Google Summer of Code 2024 journey concludes, I'm excited to share the updates on my project: Porting Arianna to Foliate-js. The main goal was to replace the outdated epub.js with actively maintained Foliate-js. In my previous blog post, I discussed the initial progress on integrating Foliate-js into Arianna, including the implementation of Table of Contents (TOC) and metadata handling.

My work done so far

Overcoming Rendering Challenges

• Rendering Issues: One of the major hurdles was fixing the rendering issues that were causing the book to not be visible on the screen. This was a complex problem, but with the guidance of my mentor,we were able to resolve it successfully, and the book was able to visible on the screen.

• Text Color in Light Theme: I also addressed the text color issues in the light theme mode, ensuring other color can be visible and maintaining visual consistency across different themes.

• Navigation Buttons: Enabled the navigation buttons by setting backend.locationsReady to true when the book is ready. This was a key fix to enhance user navigation within the ebook, to move from one page to another expect through the arrow keys.

• Theme Color Handling: Lastly, I worked on the handling of theme colors to provide a consistent visual experience across different themes.

light: {
  fg: Config.invert ? Kirigami.Theme.backgroundColor.toString() : Kirigami.Theme.textColor.toString(),
  bg: Config.invert ? Kirigami.Theme.textColor.toString() : Kirigami.Theme.backgroundColor.toString()
}

User Experience and Functionality Refinements

• Slider and Progress Percentage: I fixed the slider functionality, making sure it accurately reflects the reading progress.

commit: ee6cae02

I added the line backend.progress = action.payload.fraction; in the relocate case. The relocate event is triggered when the location changes. The event’s detail contains properties such as range, index, and fraction. Here fraction is a number between 0 and 1, indicating the reading progress within the section. By utilizing fraction, the slider can now accurately reflect the user's position in the ebook.

• Reading Position Accuracy: I also ensured that the slider accurately reflects the reading position when users interact with it, improving the overall usability, issues previously was that when moving the slider didn't change the position in the book.

To solve this, I implemented the following changes:

QQC2.Slider {
    onValueChanged: {
        if (pressed) {
            backend.progress = value
        }
    }
    onPressedChanged: {
        if (!pressed) {
            backend.progress = value
            view.runJavaScript(`reader.view.goToFraction(${value})`)
        }
    }
}

• Book Progress Display: I resolved issues with the book progress display, update time left calculation, and popup behavior, refining the user interface for a smoother reading experience.

> Reflections and Takeaways

The project has been a significant learning experience. The most challenging part for me was making things work and realizing that not everything is as straightforward as I initially thought. It was daunting to dive into a large codebase and try to understand how everything fits together, but this experience taught me the importance of patience and how to reduce problems so they can be simply solved.

Looking Ahead

While significant progress has been made, many things are left to do:

• Fixing right-click copy and search functionality
• Implementing Ctrl+ shortcut for increasing font size
• Addressing link color and redirect issues
• Features like bookmarking and annotations

What’s next?

While my GSoC journey is coming to an end, my contributions to Arianna and the open-source community will continue.

I'd like to thank my mentor, Carl Schwan, for the guidance and support throughout the project, the KDE community, and the Google Summer of Code program for this opportunity. This experience has not only improved Arianna but has also been a transformative journey for me as a developer.

Thank you for following along with my progress, see you in my next blog with more progress.

With the Qt 6.7 release, Qt introduced a wide range of improvement for the text rendering and font shaping.

One element of this is that you can now configure OpenType font features.

Many of the 'new cool' programming fonts have such features integrated. That includes both free fonts like Cascadia Code or paid fonts like MonoLisa.

Let's use the features of Cascadia Code as an example, that is the stuff they promote on their GitHub page:

For example if you set the ss01 feature, you get some alternative italics. The same holds for MonoLisa, there that is the feature ss02. Already that shows: these feature are often not very usefully named and very font specific.

Thanks to Waqar and me, with the upcoming KF 6.6 release, one will be able to configure that in Kate and other KTextEditor based applications.

The generic KDE Frameworks font chooser allows now to configure that stuff and KTextEditor will keep these settings around.

See here enabled alternative italics in Kate with the enhanced font chooser still open (look at the SPDX markers in the code):

A remaining issue is how to best handle the configuration saving in a more generic way. Ideas how to add that to KConfig without breaking compatibility of the configuration files we write with older applications would be welcome. For KTextEditor we just add some extra key for just the features that will be ignored by old versions.