I try to change the way that Nautilus preview font, *.ttf . After goog, gnome-thumbnail-font is the answer. Because Nautilus uses gnome-thumbnail-font as a thumbnail generator. So, all I need is to change command-line that Nautilus do with it.
then find for ‘thumbnail’ & continue pursuit on .ttf file.
> gnome-thumbnail-font -t “Az”
That’s all. But I’m still finding the way to realize thumbnail for Thai language.
> gnome-thumbnail-font -t “Aก” … is not work !