I’m using the Windows port of Claws Mail 3.19.1 (latest version with GTK2) on Windows 10, but the fonts are not subpixel anti-aliased (RGB), they’re either raw pixel edges (“crisp”), or grayscale smoothing which makes them blurry.
For example if I use Segoe UI, it’s grayscale smoothed, which makes it blurry. If I use Courier New, it has no filtering at all, and jaggy pixelated edges.
What I want is for it to use RGB subpixel rendering/anti-aliasing (like ClearType, but I guess it doesn’t use it because it’s GTK2), so that its effective resolution increases on my LCD screen and I can use smaller fonts.
Note that Thunderbird’s font works fine, even if I set it to the same fonts, so I know it’s not a machine configuration issue.
Is there some hidden config I can change to force it? I don’t mind fiddling with any files. Claws Mail’s installation ships with a etc/fonts/fonts.conf, and I searched online how to force/enable it for GTK2 and added it there. Nope, doesn’t work. I tried adding a local.conf file in that folder with the info. Nope, doesn’t work either.
For the record, I tried stuff like this in there:
<match target="font">
<edit name="antialias" mode="assign"><bool>true</bool></edit>
</match>
<match target="pattern">
<edit name="lcdfilter" mode="assign">
<const>lcddefault</const>
</edit>
</match>
and so on. I even tried copying the conf.d subdirectory from my Linux machine (which also has RGB subpixel anti-aliasing on GTK2 apps) in there, and still doesn’t work.
Any ideas?
