#! /bin/zsh
#
# this file:
#   https://dataswamp.org/~incal/conf/.zsh/x

[[ $(uname) == "Linux" ]] || return

alias invert='xcalib -a -i'

alias xterm='TMUX='' SHELL=tmux xterm -fullscreen'

x-no-login () {
    sudo systemctl set-default multi-user.target
}

xh () {
    DISPLAY=":0" xdotool getwindowfocus getwindowgeometry |
        awk -F "x" '/Geometry/{print $2}'
}

depth () {
    xdpyinfo -d ":0" | awk '/of root/{print $5}'
}

xup () {
    xrdb ~/.Xresources
}

x-high-res () {
    xrandr -s 720x480
}

x-low-res () {
    xrandr -s 640x480
}

fix-display () {
    xrandr --output VGA1 --auto
}

do-thing-in-x () {
    local thing=$1
    DISPLAY=":0" xdotool type $thing
    DISPLAY=":0" xdotool key Return
    sleep 1
    chvt 6
}

in-x () {
    (( $+DISPLAY )) && echo 1 || echo 0
}

x-runs () {
    [[ $(ps -e | \grep xinit) ]] && echo 1 || echo 0
}

start-x-if-not-running () {
    if [[ ! $(ps -e | \grep xinit) ]]; then
        local xdir=~/.xdir
        [[ ! -d $xdir ]] && mkdir $xdir
        xinit -- vt6 > $xdir/xout 2> $xdir/xerr
    fi
}

# xterm & tty (tmux) and Emacs kill ring interchange
# see: ~/.emacs.d/emacs-init/xsel.el
#      ~/scripts/xi
#      ~/.tmux.conf
alias xo='DISPLAY=":0" xsel -b -o'