Updated: May 8, 2020
Overall, I'm mighty pleased with the Plasma desktop. But come version 5.16, y'know, two versions behind the most recent one - Plasma 5.18 LTS, there have been a few less-than-ideal changes, mostly tiny visual things that make the desktop less sharp than before. Again, since the desktop evolves quite rapidly, by the time you read this, we might all be using flying cars and atomic refridgerators and talk to AI assistants like all the time. Or not really.
Well, one of the things I find less nice in the new more-touchy more-plasticky Plasma of recent is that the system area icon spacing is a bit off. Less than ideal. The icons sit too close to one another. So I got me thinking, how does one edit this? Well, the answer isn't trivial, hence this article. Begin to explore!
Problem in more detail
Let's demonstrate with some fine imagery. Plasma 5.12 LTS, the likes of which graces my Slimbook Pro2, and the new(er) Plasma 5.17 as seen on KDE neon User Edition. The top image is from Kubuntu 18.04, and the bottom one is from neon. The Vault icon is different, but the spacing is also different. More condensed. Not quite the way I like it.
So what we want is to increase the spacing between system area icons. I couldn't find an obvious option to change this through system settings. Indeed, we need to go obscure, and this mean making a change in the QML-format configuration file for the relevant plasmoid. Some command-line hackery.
The system tray layout is controlled by the following file:
Now, this file will get overwritten every time there's a Plasma update, so what we need is to copy it into our home directory, and make a separate configuration there. This way, when the desktop loads, your user overrides will be read and used on top of the system defaults. Exactly what we need.
Copy the entire plasmoid (systemtray):
cp -r /usr/share/plasma/plasmoids/org.kde.plasma.private.systemtray ~/.local/share/plasma/plasmoids
Then, in your home directory, navigate to:
Open this file in a text editor. Now, search for the following string:
This is the spacing defined between icons, by default. Since you may find the config file intimidating, this the entire section where you will find this parameter declared and defined:
height: parent.height - (vertical && expander.visible ?
expander.height : 0)
width: parent.width - (vertical || !expander.visible ? 0 :
property string skipItems
flow: vertical ? Flow.LeftToRight : Flow.TopToBottom
//To make it look centered
y: Math.round(height/2 - childrenRect.height/2)
x: (expander.visible && LayoutMirroring.enabled ? expander.width : 0)
+ Math.round(width/2 - childrenRect.width/2)
The solution is to change the spacing, to something like 3, 5 or whatever amount of pixels you want, e.g.:
Restart Plasma Shell
Save the file and restart your Plasma Shell. You can do this by launching Krunner, and then running the following command:
killall plasmashell && kstart plasmashell
Wait a second or two for the desktop to reload. Lo and behold, the system area icon spacing has been fixed now, and it looks glorious and majestic, and exactly what you need to put the OCD demons to rest. Here's an example with 4px as the spacing value:
And we're done, fellas!
Small aesthetic niggles can be quite annoying. And sometimes, you just can't really ignore them. Well, this is one of those, and I must say, with even just a few small pixels of padding added there, things look so much better and more professional. The only downside is that one must dig deep into nerdy stuff to get this configuration changed.
As you can see, it's doable - and, you've also discovered a Pandora's box of goodies. You can now manually tweak plasmoids as you see them fit, and as you slowly become more accustomed to the QML code, you can really change and edit the look & feel of the Plasma desktop. Best of all, if you garble something BAR-like, you can simply delete your custom configuration from your home directory, and no harm done. I hope you like and appreciate this tutorial. See you out there, Plasmateers.