How do I disable client side decoration globally in GNOME?

Solution 1:

I'm afraid this cannot be done, unless the developer of an application has taken care of a feature like this. Showing a title bar at the top of windows, does not mean that CDS is actually disabled. It is still missing the classic window layout i.e. title bar, menu bar, tool bar, status bar.

Client Side Decorations has destroyed linux user interface and made apps and desktop environments look ugly and not native.

I hope that every developer would just ignore Gnome guide lines and keep his application useful and consistent for all environments.

Or at least support both ones like celluloid-player

Edit

Let me point out my point of view for CSD:

1. You can drag n drop windows from header's buttons!! As inconvenient as it gets!

2. It does not save space, it it wasting it. Just place windows side by side and see! Specially windows that just have their title/header bar expanded just to match the design!

3. It is often compared with OSX but this is completely wrong because OSX has and always will have menu bar.

4. lucking the menu bar, users have to seek for functionality among buttons placed left or right without any standard design.

5. Buttons are have to be left-clicked -> released -> re-click. But in the classic design you can just hold-click -> release-click on the item!!

6. The need of menubar is essential on some programs like Krita, Gimp, Inkscape, Blender, etc. So we always have a mixture of CDS and non-CDS and that is bad! design?

7. CDS will be used by apps with none or without many "menu options", thus waste of space occurs, cos the entire header bar will be mostly empty but still there! There are plenty of examples out there.

8. When giving instructions to someone is like "Hey, press the second button from the right, what do you see? Oh ok, now press preferences", i.e. IF you're lucky. Instead of "Hey, goto Menu - Edit - Preferences"!!!

Bonus anti-feature: Those popup menus, so called burger menus?, that you don't see the item's parentS and if you make a mistake you have to move the mouse up and down and again and again to reach the parent! OMG...

Solution 2:

While I agree with Vassilis that CSDs are horrible - fortunately, he is wrong about the possibility of disabling them.

In Ubuntu, install the gtk3-nocsd package and then log out and log back in.

This "hack" causes GTK+ applications to no longer disable the window manager's window decoration. The result may look a bit weird - here's how GNOME's calculator application looks with the standard CSD:

And with the NOCSD hack:

You can see several examples of why Vassilis' assertion that CSDs are a horrible idea that destroyed the Linux user interface is true:

1. The non-CSD window title shows "<2>" because I've run 2 calculator windows at the same time to take the screenshots, and the CSD one is also titled "Calculator" but doesn't show it, so if your window manager has a window list UI (such as a "taskbar") and you see there "Calculator" listed, it will not be trivial finding it on the screen.
2. My window manager has "drop shadows" enabled which makes it easier for me to see which windows are above other windows, but the CSD window disables it for no good reason - making my screen again more complicated to understand than need be.
3. I use the "always on top" functionality a lot, which is why I've asked my window manager to display a handy button to enable it near the other window operation buttons, but the CSD app obviously doesn't know about it and doesn't show it. Same problem with the "pin to current workspace" button, though here the error is more glaring because it is in the default configuration and GTK+ should have known that.
4. What isn't shown (because I was lazy) is the window operations menu (right click on the title) that the CSD window has a very limited set of options available (basically the 6 standard ops and "always on top") while my window manager offers a lot more functionality that I often use).
5. Another thing that isn't shown is that the CSD window doesn't change its title color when not active, unlike all the other windows I have. This would have been a more glaring error if KDE wasn't such an awesome desktop environment and configured the GTK+ application to use the correct title colors - on other DEs the active GTK+ CSD title color doesn't even match the active "native" window title color.