Tag Archives: plasma 5

Plasma Theme Explorer


In a while, together Plasma 5.3 will be released (independently) a new package: plasma-sdk, containing some very useful tools for development around plasma, some old KDE4 era ones will return, some are new.

  • plasmate: lightweight IDE for plasmoids (experimental port to KF5, work in progress)
  • plasmoidviewer: useful to test a single plasmoid, in different formfactors (like desktop, panel, and so on)
  • plasmaengineexplorer: test and debug tool for dataengines.
  • cuttlefish: tool for exploring icon themes
  • plasmathemeexplorer: tool used to explore Plasma themes, let’s talk about this one.

Plasma theme explorer is a new tool that is targeted at designers of Plasma themes.
It can open any installed theme and preview it as a grid of thumbnails of the actual elements rendered.
The thumbnails all have a green or a red dot in it. The ones with a green dot mean that the theme directly provides that element, red means the theme doesn’t have it, so it will fallback to the default theme (currently Breeze). So it makes it very easy and fast to assess the completeness of a theme and to decide what elements to do in order to make the theme more complete.

A sidebar on the right will show a bigger preview of the theme element, together a short description of what the element is for, and an edit button (enabled only for themes installed locally in the user home).

Clicking the edit button, will open the SVG of the theme in inkscape, and will run a little sanitizing script on the file after inkscape is closed.
If the theme doesn’t provide the particular element (and we have a red dot in the thumbnail) the corresponding file from Breeze will be copied in your theme folder, and that one will then be opened in inkscape, making the job of completing a theme easier and faster.

Whops I didn’t mean to delete that


This is a little sneak peek of a new feature that will arrive in Plasma 5.2 (OK, to be pedantic since frameworks has a separate schedule, you will be able to get it already next frameworks release a bit before Plasma’s)
Ever ended up deleting a desktop widget, panel widget or even an entire panel just to wish you hadn’t?
One solution may be littering everything with confirmation dialogs, but this quickly becomes annoying, besides the user becoming quickly trained to click “yes” without ever thinking about (I fallen too many times at this kind of dialogs).
So, what can be a better solution? Undo!

When the user deletes something, a notification pops up, notifying that an important thing has been deleted: it offers an action to undo the deletion.
If you click “undo” the widget or panel will instantly come back, if you manually close the notification, it will be irrevocably deleted.

On Plasma5: present and future


This is the second part of my ramblings about the Plasma 5 release, just after it come out.
This is a very important moment, after a massive amount of work.

What are the most important things that can make a free software project successful or not?
To me are principally two: user experience and developer experience.

User experience

The first release of Plasma 5 will start to make use of the work of a newly formed group in the KDE community: the Visual Design Group.
I’m very impressed how they managed to get a firm grip of many issues that are always been a problem in KDE software.
They are not only doing nice pictures, but rather starting to give real guidance to the design direction of the future Plasma and applications by KDE.
On the 5.0 release, the most visible thing will be the Breeze theme, that while still far to the final vision, it starts to show the clean and functional style (funny trivia: I remember discussing on the VDG forum about pure flat design versus using 3D effects for “interactive” controls, to give depth and intuitiveness for interactive areas… months before Material was presented. Those guys are definitely onto something.)

But it of course doesn’t stop to a theme and some icons:
what is more deep and a long term plan is to review the look, refinement and usability of pretty much.. everything.
Good design means also every single application has a clean and functional layout, and its “interaction flow” is logic, intuitive and derived from user needs rather than the technical details of the application.
An example of those things still to come is the new layout of System Settings that will come in little piece by piece, one by one in the future releases (The 5.0 release already has a new categorization, each release will move it a step more towards the final design).

Freedom, in all aspects

A big challenge in the design of Plasma 5 is that while providing a very simple and appealing experience out of the box, our central value is to put our priority in serving the different exigences of different kinds of users, because, as for devices, one size does not fit all.

The Plasma workspace is now even more flexible, on different devices it will sport completely different default user interfaces, because different use cases and different input methods require a different way to interact and a different way to present information (as lately even Microsoft discovered, in the very hard way).

And not only that, on your desktop or laptop, you can “build” a workspace experience as you please, optimized to your preferences.
We will never force you to a panel in a particular side of the screen, or to one task manager mode (taskbar vs dock) or to a particular desktop layout.
We well know that this makes the design process more difficult, but often the “easy” solutions are not necessarily the “correct” ones.
We give you a desktop that can adapt to you, rather than giving you a desktop you have to adapt to.

Developer experience

In later years, with the bigger emphasis on the user experience, the experience for developers started to take the back seat.
But we are a free software project, and its success is measured not only in users, but also in how many people would want to engage in an active way, and how comfortable are developers to work on the projects.
Being built on a foundation as strong as Qt, the software by KDE can also offer amazing tools for developers.
The recently released KDE Frameworks 5 is an important step in this direction: the KDE libraries are not anymore a big monolith but a set of very small, useful and independent libraries.

The base of the Plasma Shell is a framework as well: the Plasma framework, composed principally by two things:

  • The Plasma library: is the good old libplasma.. but it’s way slimmer and more focused than the KDE4 version: It doesn’t offer graphical widgets anymore, and doesn’t make any assumption on what graphic engine will be used (One could even build a shell completely based upon QWidgets with it, just because :p).
    It continue to provide easy access to packages, dataengines, asynchronous services and the save and restore functionalities of the layout, known as the Corona.
    The library solves problems that are out of scope for QML: from a surface with interactive graphical elements in it, it brings it to a “full featured desktop shell”.
  • The second part is instead a set of runtime components, of QML bindings that offer QML access to the Plasma facilities such as dataengines and svg themes and a set of graphical components to use in QML plasmoids and applications, such as buttons and text fields, that are converging, and will converge more and more with the upstream QtControls project.
  • In future releases there will be a comeback of the kpart to easily include qml-based informational dashboards into applications, and a runtime to launch plasmoids as simple independent mini applications.

Looking at the future

So, what are we planning for the future?

The stable, default core Desktop project will become more and more stable and polished, but the development focus will touch other use cases as well.
The Plasma Active port to Frameworks 5 is ongoing, as well the Plasma Mediacenter port, so the “different shell for different devices” story will be complete.
Of course our focus is not only about KDE on different devices, but also making KDE work tightly integrated with other kind of devices, thanks to projects such as KDE Connect. Interestingly, The Plasma Workspace 4.x series is today the environment with the tighter integration with smartphones (only with the next releases of their operating systems Apple is catching up, with a quite similar feature set).
You can expect this integration work being even more complete in future releases of Plasma 5.

Finally, the artwork presented in 5.0 is only a preview of what is still to come from the Visual Design Group: more icons, more complete widget set, more and more applications will receive a makeover look-wise and most importantly usability-wise.

On Plasma 5


We are very, very near the release of the new Plasma release by KDE (more on the nomenclature later).
This is the first entry of a short series of blogs that take a look about the past and the future of Plasma, what we learned from the 4.x series, what changed, what we can take away and to expect for the future.

First, we were (and we still are) very happy about the status of the Plasma desktop as seen in KDE 4.x, but this doesn’t stop to wonder what can be improved.
The Plasma Desktop started to migrate towards QML since quite some time, but it was clear that the real focus in Qt 5.x would have been QML2.
That’s awesome, because QML2 solves many limitation in performance that QML1 and the QGraphicsView framework had in Qt 4.x.
But that was also a problem, since Plasma1 was tightly coupled with QGraphicsView, this meant: a lot of work ahead.
What we wanted, was the plasma platform itself completely independent from any graphical system itself.
From a big monolith-that-provides-everything, libplasma would have become a way smaller library (roughly 1/3 of the code of the plasma library in 4,x), providing a *model* for the layout, and utils as painting utils and the usual data access, but the representation of this model, would have been completely up to the shell (more on that next entry).

I remember starting a branch of libplasma back in summer 2011 at the Berlin desktop summit (that was also when the Frameworks development seriously started to seriously gain steam). The thing lived as mostly a proof of concept for a while.
Fast forward at the end of 2012 and we had a minimal shell that started correctly and could correctly restore a layout of applets, in a minimal desktop (no panel yet!).
The work proceeded and the features got back one by one.
In the meantime many new people joined the effort (Some thanks to Blue Systems, some volunteer) significantly speeding up the process.
Fast forward to the beginning of 2014 and it was possible again to use it as a basic main desktop (eat your own dogfood).
Just to give a little idea of the amount of work, there are around ~5100 Plasma5-related commits only on the plasma-frameworks repository, if we count all the workspace parts, it would be a way bigger figure.
It has been a long road, with some (quite) rough moments in the middle for sure, but looking back I’m pretty proud of what we achieved, of what i did, and what every single member of the team did to get here.
But this, this is

Just the beginning

This is the first release of a new chapter of Plasma, in which a new release method will be used to celebrate the diverity of the KDE community.
We used to have a 6 months “big release” of all things KDE, called in the beginning just “KDE”, then “KDE SC”, but this release is not that anymore, because KDE grown a lot in the past years, is not just that anymore, and “a single release of everything” scales only so much.

So, let’s take a step back and see what is KDE: it is a community that can offer you a range of very different things:

  • Want a primary user interface for your Desktop, Laptop, Tablet, Media Center? There is Plasma, tailored explicitly for the particular device is running on. Desktop and laptops have an interface optimized for mouse,keyboard and trackpad input, Plasma Active and Plasma Mediacenter are instead tailored on the constraints those different kind of device pose instead.
  • Do you need a particular application for a particular task? The KDE community offers a wide range of applications, from media players, communication tools, games, to a kickass office suite, to one of the best painting applications on the market (not best on Linux, not best among Open Source ones, the best, period) and countless others.
    They are free software, they are multi platform and supported by a vibrant community of developers.
  • Are you a Qt developer that is working on a new application, and need more functionality? KDE Frameworks offers a wide variety of libraries and frameworks to chose from that can dramatically decrease the amount of work needed to do a big, polished application.
  • And in the latter case, if you want, of course your project is more then welcome to join in the KDE family, as other formerly external projects already did, like KDEnlive or GCompris

This release of The Plasma Desktop Workspace can be used for day to day use already, even tough it’s based on very new technology, so some youth problems are expected as well. Also, while the integration between KDE4 and Plasma5 applications is good, you may want to wait more applications ported to Frameworks 5 before jumply completely full on a pure Plasma 5 environment.

The cycle

So, when a new version will arrive? how do you check if new applications come?
The development cycle will be much faster now: you can expect a new release of the KDE frameworks (so the libraries, *not* the applications) every month, while Plasma5 will be each 3 months instead for now.
Anyways, new goodies should hit your distro of choice way faster than it used to be in the past.

Next time, I’ll write about what to expect in this release and the next ones about the user experience, the developer experience, and random musings on the future.