dep composed on 2018-05-11 16:17 (UTC-0400):
Felix Miata wrote:
Xft.dpi is the foundation on which Gnome/GTK built its zoom knob. You should try
incorporating it instead of kludging around it. Set it in Xresources (or TDE
desktop settings if it offers something close enough to what Xorg is or you
want) to whatever DPI number xdpyinfo or tdecmshell xserver reports and work
from there, keeping resolution at your display's native.
I am most very interested in this, and have no experience with it. I changed DPI long ago (how long? Well, it was in xf86config) and I think maybe in a KDE setting once or twice. But I know nothing of a zoom knob or where I might experiment with it. Any advice/help with it would be appreciated.
I can't offer details on how Gnome or Mate or their kin present font sizing or DE zoom control to their users. I don't use any of those. All I know is that Xft.dpi is the mechanism's underpinning, and "zoom knob" is one alias (scaling being another), for their attempt to make it easier for users to escape from mousetype.
DPI OTOH I control on all my installations. DPI, whether via Xft.dpi (Xresources), DisplaySize (xorg.conf) or xrandr (both -fbmm and -dpi) do function as a desktop zooming knob that allows to keep the display's native mode in use while enlarging the various objects thereupon placed.