gnome-shell there is an extension that removes the window borders, close buttons, title bar, etc on maximized windows to save screen real estate.
How can this behavior be replicated in KDE?
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Note: In recent versions of KDE Plasma (5.18+), Latte dock is interfering with the particular setting described in this answer (After every restart, the user has to run the command in this answer once again, because Latte overwrites the configuration file). The workaround is to let Latte dock manage the borderless window configuration. See this answer for more details.
To remove the borders of maximized windows in KDE Plasma 5, run the following commands:
kwriteconfig5 --file ~/.config/kwinrc --group Windows --key BorderlessMaximizedWindows true qdbus org.kde.KWin /KWin reconfigure
This is equivalent to doing the following:
Edit the file
~/.config/kwinrc to add the line:
[Windows] section, so that it looks something like this:
[Windows] BorderlessMaximizedWindows=true ActiveMouseScreen=true AltTabStyle=KDE AutoRaise=false AutoRaiseInterval=750 BorderSnapZone=10 CenterSnapZone=0
In older versions of KDE, the file may be located at:
Restart KWin by running:
If that does not work, try one of the following, depending on which display server you are using:
kwin_x11 --replace kwin_wayland --replace
Go crazy and maximize every window in sight! Remember that you can unmaximize them from the window menu (Alt + F3) or from the task manager in your panel. If quick tiling is enabled (System Settings → Desktop → Screen Edges → Window Management), you can also use Alt + Left mouse button to unmaximize windows by dragging them.
In Kubuntu 18.04, one can toggle borders (including the titlebar) and the maximized state of windows relatively simply.
In System Settings, choose Shortcuts > Global Shortcuts > KWin. In there, scroll to Hide Window Borders and set a shortcut. I chose Meta+D and clicked Apply.
Still, while in System Settings > Shortcuts > Global Shortcuts > KWin (in Kubuntu 18.04.1 LTS, Kwin corresponds to System Settings Module), scroll further down to Maximize Window. Here, I chose Meta+X and clicked Apply.
Obviously, I can use both Meta+D and Meta+X on the same window whenever I want.
Remove top border or title bar in KDE/Kubuntu while retaining the windows button (Window Buttons Applet)
1.Latte Dock - Install from discover,right click on the dock, layouts>preferences>borderless> tick borderless>under layouts
2.Window Buttons Applet - Download from (present under files tab) https://store.kde.org/p/1272871/
Before running the installation script you have to install the dependencies needed for compiling.
sudo apt install g++ extra-cmake-modules qtbase5-dev qtdeclarative5-dev libkf5declarative-dev libkf5plasma-dev libkdecorations2-dev gettext
2.use your package manager to download cmake,I'm using Muon package manager and had cmake already installed Steps: Click on installation and then apply changes Now you can run the installation script.
3.Right click >Desktop Add widgets,search windows button and drag it to top right corner, then edit its settings and lock your widgets.
Always backup your kde customization
Go to System Settings->Window Management->Window Rules->New..
Add Window class choose “Regular Expression” from the drop-down and put “.*” in the input.
Click the Appearance & Fixes tab. Check “No titlebar and frame”, select “Force” from the drop-down, and select the “Yes” radio.
Save and close everything.
Your title bars will disappear but you will need to use the keyboard to close windows, minimize...
In several applications --- Firefox, Google Chrome, Geany, Konsole are examples --- you can toggle borders (including the titlebar) and the full screen state of windows with the function key F11.
This works in Kubuntu (I tested in Kubuntu 18.04.1 LTS right now). F11 works also in standard Ubuntu and the other Ubuntu community flavours.