Hi all,
So I finally have my problem fully solved for now, and here is a summary
of the pertinent points. Beware that some of this may only apply to the
MacPorts install of gtk3, I have no experience with any other type of gtk3
install on MacOS.
(1) I had to set my XDG_CONFIG_HOME environment variable to a directory of
my own creation containing the file gtk-3.0/settings.ini. The contents of
the latter are
[Settings]
gtk-application-prefer-dark-theme = false
gtk-theme-name = Adwaita
gtk-icon-theme-name = Adwaita
gtk-font-name = Cantarell 12
Use the gtk-font-name to specify a font name and size of your choice, but
the named font must be MacOS-managed, not X11/fontconfig-managed! Meaning,
if you were to open up the MacOS FontBook app you should see it listed
there.
You may be able to set XDG_CONFIG_HOME to any gtk3-installed theme
directory, e.g., /opt/local/share/themes/HighContrast, but whatever font
is being used by that theme (or by default) must be similarly
MacOS-managed.
(2) If you want to use a font that is not already managed by MacOS (e.g.,
Cantarell or any other gtk-ish font not already available in native
MacOS), you must install it in one of two ways. You can use FontBook as
recommended by many web sources, but I could not find any way to install
my fonts in that manner so as to be visible to all userIDs. To do the
latter I had to manually use the Finder to drag the desired .ttf file(s)
into /Library/Fonts. See http://support.apple.com/en-us/HT201722 for more
information.
(3 -- Free Bonus!) Unless you are using a direct gtk-on-Quartz
implementation (in which case, please tell me if that's working well and,
if so, how you made it so), you will very likely be using the XQuartz X11
server. I have been having intermittent problems with XQuartz startup when
invoking various X11 clients, the problem being that occasionally X11
windows are mapped to the display in an unmanaged state (meaning without
the MacOS window titlebar and its close/iconify/etc. buttons and with no
way to move the window anywhere else on the display). This does not happen
often but it's far from rare. When it does happen, it takes XQuartz a
*very* long time to start (tens of seconds). This problem has been
reported by other users but I have never seen any clear fix, and I have
seen one fix that did not work for me at all (changing a Mission Control
setting). In my case (and probably all the others), the quartz-wm window
manager either died or was just never started. Fortunately for me at
least, however, I have so far been able to fix this problem just by
manually (re?)starting the window manager with
% quartz-wm &
May my luck continue and yours be as good, because this is a truly
annoying problem!
I hope others find these tips helpful, and thanks again to the list
members who helped me grope my way to these solutions!
Roger
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