htr3n / dpi

Convenient DPI calculation for X

DPI Calculator for X

File ~/.xsession

For target DPI=122 for applications supporting XSettings, Xft/DPI sets font scaling (and sometimes interface scaling), Gdk/WindowScalingFactor sets interface scaling with GTK 3, and Gdk/UnscaledDPI` undo font scaling for GTK 3 applications.

$ cat<<EOF> ~/.xsettingsd
Xft/DPI $(( $dpi*1024 ))
Gdk/WindowScalingFactor $(( $dpi/96 ))
Gdk/UnscaledDPI $(( $dpi*1024/($dpi/96) ))
EOF

pkill -HUP xsettingsd || xsettingsd &

# For QT applications.
export QT_AUTO_SCREEN_SCALE_FACTOR=1

# For miscellaneous applications.
echo Xft.dpi: $dpi | xrdb -merge

File ~/.xsettingsd

Xft/Hinting 0
Xft/RGBA "rgb"
Xft/HintStyle "hintnone"
Xft/Antialias 0

Gtk/CursorThemeSize 0
Gtk/FontName "SF Display Text 9"
Gtk/IconThemeName "Yaru"
Gtk/MenuBarAccel "F10"
Gtk/MenuImages 1
Gtk/ToolbarIconSize 3
Gtk/ToolbarStyle "icons"

Xft/DPI 121196
Gdk/WindowScalingFactor 1.5
Gdk/UnscaledDPI 80797