Re: gtk3 (GtkTextView) and MacOS

[Jim Charlton <charltn gmail com>]

Roger:

I don't know if it will help or not... but I have used Gtk::TextView, 
the gtkmm wrapper for GtkTextView and have changed the fonts with the 
class method "override_font".

For example

Gtk::TextView tv1;
Pango::FontDescription *pfd = new Pango::FontDescription("Sans 8");
tv1.override_font(*pfd);

This implies that GtkTextView uses pango font descriptors. Perhaps you 
can use the GtkWidget.modify_font() method that will accept a 
PangoFontDescription.

jim...   Jim Charlton



On 15-02-25 03:56 PM, Roger Davis wrote:
> Thanks, Jim, your hint on setting XDG_CONFIG_HOME led me to a bunch of 
> other useful info on the web that I have been slogging through all 
> morning now. I have had some success but am still far from the finish 
> line.
>
> On my Mac, if I set XDG_CONFIG_HOME to 
> /opt/local/share/themes/HighContrast, which is where MacPorts dumped the
> HighContrast theme, and which contains a gtk-3.0 subdirectory with the 
> files gtk.css, gtk.gresource and settings.ini, my app successfully 
> loads the HighContrast theme, although I still have the same font 
> problems within my GtkTextView windows.
>
> Similarly, I can make my own settings.ini file in 
> ~/gtksettings/gtk-3.0, set XDG_CONFIG_HOME to ~/gtksettings, and my 
> app processes that file, but again with the same font issues. That 
> file contains a line of the form
>
>    gtk-font-name = fontname fontsize
>
> e.g.,
>
>    gtk-font-name = Sans 10
>
> and I can tweak the fontsize value and successfully get the altered 
> font size in my app. However, absolutely nothing that I do to the 
> fontname results in the use of a different font. In fact,
>
>    gtk-font-name = FontConfusion 10
>
> still loads exactly the same font!
>
> So, I am now convinced this is some kind of font installation or 
> configuration problem. I am guessing that my MacOS gtk3 can't find any 
> fonts whatsoever except for this exceptionally unintelligent fallback 
> font it seems to be using. Does anyone know where gtk3 is looking for 
> its fonts? I've spent quite a while looking for font files on my 
> CentOS 7 system where I'm not having font problems, and actually can't 
> find many there anywhere! Can anyone give me a reference to some 
> decent documentation on where gtk3 font management that describes how 
> to name fonts with the gtk-font-name property and how that name is 
> associated with an actual font file? I sure have not been able to find 
> any on my own!
>
> Thanks again,
>
> Roger
>
>
> > I found (eventually) that I could do the same on the Mac if I set the 
> > environment variable XDG_CONFIG_HOME=/path/to/theme/gtk-3.0/ (I am 
> > not sure where your themes are installed using MacPorts. Perhaps 
> > /usr/share/themes/Ambiance or whatever). prior to executing the 
> > program. The selected (and perhaps edited) theme is then used over 
> > the embedded default. If memory serves me correctly... I was able to 
> > copy themes from
> > Linux to the Mac and use them.
> >
> > jim...   JIm Charlton
>
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