Gaps around GTK apps, Firefox, and other apps that have client-side decorations

[puyoxyz]

There are huge gaps around anything that has client side decorations because of the shadow:

For Firefox, you can just disable its client side decorations ("Title bar" option at the bottom of the customize screen), but what about GTK?

[leukipp]

AFAIK there is no way to obtain the margin values caused by client side decorations (using the EWMH protocol).
Therefore cortile is not aware of any additional layout changes, that may lead to those gaps.

Depending on your operating system and window manager settings (theme, border, shadow, ...) you can search for
Disable GTK3 Client-Side Decorations. However, this could cause minor cosmetic damage to your desired appearance of windows.

For default Xfce desktop environments create a file /home/USER/.config/gtk-3.0/gtk.css with the content:

decoration {
    margin: 0px;
    padding: 0px;
    border: none;
    box-shadow: none;
}

This will disable most of the client-side decorations that might cause this problem.

Let me know if you have found a solution to your particular problem.

[leukipp]

This was solved with the suggestions from mark-cooke (#5).
Please have a look at the latest release and let me know if you find any further issues.