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Preferred way is to use GTK+ theme for window decorations. Metacity
themes are still "supported" to allow users use old themes...

Also metacity-theme.dtd has not been updated for Theme Format 3.x,
remove it as it can not be used to validate new format files.

We refuse to move focus while a grab operation is in place. While this
generally makes sense, there's no reason why the window that owns the
grab shouldn't be given the regular input focus as well - we pretty
much assume that the grab window is also the focus window anyway.

In fact there's a strong reason for allowing the focus change here:
If the grab window isn't the focus window, it probably has a modal
transient that is focused instead, and a likely reason for the focus
request is that the transient is being unmanaged and we must move
the focus elsewhere.

mutter#15

It doesn't make much sense to globally unset focus when mapping
a new window.

Based on mutter commit:
mutter@998d921d

FOCUSED_WINDOW layer does not exist.

This reverts commit 12c4f35c.

#8

Timeouts are not used since de65967b.

Changes to remove frame for fullscreen windows have introduced
regression - Firefox will cancel fullscreen if it receives focus
out event before _NET_WM_STATE property change event.

Use idle to ensure or destroy frame after window features are
recalculated and window state set.

This is attempt to fix/silence coverity overlapping assignment
issues - CID 1491451 and CID 1491452.

In practice this does not seem to change anything, in both cases
clang and gcc generates same assembly output with optimization
level 1 or higher.

And do not fill surface with opaque black (the default source
pattern).

In addition to existing properties use also new _GNOME_WM_STRUT_AREA
property that allows creating struts between monitors.

https://mail.gnome.org/archives/wm-spec-list/2018-December/msg00000.html
https://gitlab.freedesktop.org/xdg/xdg-specs/merge_requests/22

In addition to existing _NET_WORKAREA property set also new
_GTK_WORKAREAS_Dn property where n is desktop number (between 0
and _NET_NUMBER_OF_DESKTOPS - 1).

https://mail.gnome.org/archives/wm-spec-list/2018-December/msg00000.html
https://gitlab.freedesktop.org/xdg/xdg-specs/merge_requests/22

!3

mutter@c13ea4f4