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#!/bin/python3
import sys
import os
mode = sys.argv[1] if len(sys.argv) > 1 else None # internal/external
def main():
if mode == "internal":
dpi = 110
os.system(rf"xrandr --output eDP1 --mode 1920x1080 --primary; xrandr --output DP1 --off; xrandr --dpi {dpi}")
xft_dpi(dpi)
alacritty(12)
polybar(dpi, 27, -560)
nitrogen()
elif mode == "external":
dpi = 130
os.system(rf"xrandr --output DP1 --mode 3840x2160 --primary; xrandr --output eDP1 --off; xrandr --dpi {dpi}")
xft_dpi(dpi)
alacritty(15)
polybar(dpi, 37, 700)
nitrogen()
else:
print(f"Usage: {sys.argv[0]} <internal|external>")
def xft_dpi(dpi):
# Update Xft DPI for apps that don't use gnome settings daemon.
# Those apps will only get the new DPI when they restart.
os.system(rf"echo Xft.dpi: {dpi} | xrdb -override -")
# Update Xft DPI in xsettingsd which is a lightweight gnome settings daemon implementation.
# The apps which query gsd for DPI will get updated on the fly.
dpi_xsettingsd = dpi*1024
os.system(rf"sed -i -E '/DPI/s/[0-9.]+/{dpi_xsettingsd}/' $HOME/.xsettingsd") # 130*1024
os.system('killall -HUP xsettingsd')
def alacritty(font_size):
os.system(rf"sed -i -E '/\s+size:/s/[0-9.]+/{font_size}/' $HOME/.config/alacritty/alacritty.yml")
def polybar(dpi, height, tray_offset):
os.system(rf"sed -i -E '/dpi =/s/[0-9.]+/{dpi}/' $HOME/.config/polybar/config")
os.system(rf"sed -i -E '/height =/s/[0-9.]+/{height}/' $HOME/.config/polybar/config")
os.system(rf"sed -i -E '/tray-offset-x =/s/-?[0-9.]+/{tray_offset}/' $HOME/.config/polybar/config")
os.system(rf"polybar-msg cmd restart")
def nitrogen():
os.system("nitrogen --restore")
if __name__ == "__main__":
main()
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