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307 lines
7.8 KiB
307 lines
7.8 KiB
#!/usr/bin/zsh
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#
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# Setup outputs with xrandr as a backend and dmenu as a frontend
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#
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# external commands: cat, cut, dmenu, grep, sed, xrandr
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# Released under GPLv2
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#
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typeset XRANDR_TXT # readonly; stdout of running xrandr without any options
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typeset -A OUTPUT_CONFIGURED # key=connected output name
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typeset -a DISCONNECT_OUTPUTS
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typeset OPT_MODE='auto'
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typeset OPT_ROTATION='normal'
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typeset -ir EXIT_CLEAN=7
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typeset -ir ERR_BAD_ARGS=257
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typeset -ir ERR_BAD_SELECTION=258
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typeset -ir ERR_NO_OPTIONS=259
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if ! command -v cat &>/dev/null; then
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echo 'coreutils seem to be missing. You'\''re gonna have a bad time.' >&2
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exit 255
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elif ! command -v grep &>/dev/null; then
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echo 'grep seems to be missing. You'\''re gonna have a bad time.' >&2
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exit 255
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elif ! command -v xrandr &>/dev/null; then
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echo 'Ran xrandr-dmenu without xrandr? You'\''re gonna have a bad time.' >&2
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exit 255
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elif ! command -v dmenu &>/dev/null; then
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echo 'Ran xrandr-dmenu without dmenu? You'\''re gonna have a bad time.' >&2
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exit 255
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elif ! xset q &>/dev/null; then
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echo 'Woah there, cowboy! You need to run this from inside X!' >&2
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exit 1
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fi
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XRANDR_TXT="$(xrandr)" || exit $?
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function () {
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typeset opt
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typeset output
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typeset help_msg="usage: xrandr-dmenu [options]
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Setup X outputs position, mode, etc
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Input 'exit' or press 'ESC' at any point to cancel.
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Options:
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-m Select mode for outputs
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-M Use current mode for outputs
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-r Select rotation for outputs
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-R Use current rotation for outputs"
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while getopts mMrRh opt; do
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case "${opt}" in
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('m') OPT_MODE='change' ;;
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('M') OPT_MODE='no_change' ;;
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('r') OPT_ROTATION='change' ;;
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('R') OPT_ROTATION='no_change' ;;
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('h')
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echo "${help_msg}"
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exit 0
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;;
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('?')
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echo "${help_msg}"
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exit 1
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;;
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esac
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done
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for output in $(grep ' connected' <<< "${XRANDR_TXT}" | cut -d ' ' -f 1); do
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OUTPUT_CONFIGURED[${output}]='false'
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done
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for output ($(grep ' disconnected' <<< "${XRANDR_TXT}" | cut -d ' ' -f 1)) {
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DISCONNECTED_OUTPUTS+=("${output}")
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}
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} "$@"
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typeset -r XRANDR_TXT
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typeset -r OPT_MODE
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typeset -r OPT_ROTATION
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typeset -r DISCONNECTED_OUTPUTS
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function main() {
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typeset prompt
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typeset menu
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typeset output
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typeset mode
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typeset rotation
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typeset position
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typeset xrandr_cmd
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# set primary output
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prompt='Select primary output:'
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output="$(menu_select "${prompt}" ${(k)=OUTPUT_CONFIGURED})"
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[ "$output" = "eDP1" ] && bail 1
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position='--primary'
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mode="$(select_mode ${output})" || bail $?
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rotation="$(select_rotation ${output})" || bail $?
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OUTPUT_CONFIGURED[${output}]='true'
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xrandr_cmd="xrandr --output ${output} ${position} ${rotation} ${mode}"
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# set additional outputs
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prompt='Select next output:'
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while ! all_outputs_configured; do
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menu="$(list_unconfigured_outputs)"
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output="$(menu_select ${prompt} ${=menu})" || bail $?
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position="$(select_position ${output})" || bail $?
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if [[ "${position}" != '--off' ]]; then
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mode="$(select_mode ${output})" || bail $?
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rotation="$(select_rotation ${output})" || bail $?
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fi
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OUTPUT_CONFIGURED[${output}]='true'
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xrandr_cmd+=" --output ${output} ${position} ${rotation} ${mode}"
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done
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if [ "$(pidof x11vnc)" ]; then
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killvnc="$(printf "no\nyes" | dmenu -p "Would you like to kill existing vnc display?")"
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if [ "$killvnc" = "yes" ]; then
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xrandr --output HDMI2 --off
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killall -9 x11vnc
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vnc="$(printf "no\nyes" | dmenu -p "Would you like to connect to your ipad?")"
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fi
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else
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vnc="$(printf "no\nyes" | dmenu -p "Would you like to connect to your ipad?")"
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fi
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if [ "$vnc" = "yes" ]; then
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$HOME/.local/bin/ipad_xrandr.sh
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pidof x11vnc && notify-send -t 60000 -a " Network info" "$(echo -e "wlan0: $wlan\neth0: $eth\nRunning on port 5900")"
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fi
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# forcibly '--off' disconnected outputs
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for output in ${DISCONNECTED_OUTPUTS}; do
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xrandr_cmd+=" --output ${output} --off"
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done
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# do the deed
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if ! ${=xrandr_cmd}; then
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echo "Failed to execute xrandr command:\n${xrandr_cmd}"
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bail 255
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fi
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}
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################################################################################
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# Uses dmenu to select the position of a given output relative to an already
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# configured output. --same-as and --off are considered a position.
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# Prints in the form of xrandr option (eg, '--right-of DP1') to stdout
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# Global variables:
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# ERR_BAD_ARG
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# Arguments:
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# $1=name of output to configure
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# Returns:
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# ERR_BAD_ARG for no $1
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################################################################################
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function select_position() {
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[[ -z $1 ]] && return "${ERR_BAD_ARG}"
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typeset output
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typeset prompt
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typeset -a menu
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typeset anchor
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typeset position
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typeset selection
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output="$1"
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prompt="Select position of ${output}:"
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for anchor in $(list_configured_outputs); do
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for position in 'left of' 'right of' 'above' 'below' 'same as'; do
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menu+=("${position} ${anchor}")
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done
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done
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menu+=('off')
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selection="$(menu_select "${prompt}" ${menu})" || return $?
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case "${selection[(w)1]}" in
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(left|right|same) echo "--${selection/ /-}" ;;
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(above|below|mirror|off) echo "--${selection}" ;;
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esac
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}
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################################################################################
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# Uses dmenu to display the detected mode options for a given output and lets
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# the user select a mode to use. Prints choice in xrandr option format
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# (eg, '--mode 800x600' or '--auto') to stdout
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# Global variables:
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# XRANDR_TXT
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# OPT_MODE
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# ERR_BAD_ARGS
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# Arguments:
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# $1 - name of which output we are working with
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# Returns:
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# ERR_BAD_ARGS
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################################################################################
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function select_mode() {
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[[ -z $1 ]] && return "${ERR_BAD_ARGS}"
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typeset output
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typeset prompt
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typeset menu
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typeset selection
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output="$1"
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prompt="Select mode for ${output}:"
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if [[ "${OPT_MODE}" == 'auto' ]]; then
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echo '--auto'
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elif [[ "${OPT_MODE}" == 'no_change' ]]; then
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echo ''
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else
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# TODO: make this not ugly. A better sed should negate the need for cut/grep
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menu="$(echo \"${XRANDR_TXT}\" \
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| sed -n '/^'${output}' /,/^[^ ]/ s/ * //p' \
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| cut -d ' ' -f 1 \
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| grep x \
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| cat <(echo auto) -)"
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selection="$(menu_select "${prompt}" ${=menu})" || return $?
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if [[ 'auto' == "${selection}" ]]; then
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echo '--auto'
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else
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echo "--mode ${selection}"
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fi
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fi
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}
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function select_rotation() {
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[[ -z $1 ]] && return "${ERR_BAD_ARGS}"
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typeset menu
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typeset prompt
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prompt="Select rotation of $1:"
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menu=('normal' 'inverted' 'left' 'right')
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if [[ "${OPT_ROTATION}" == 'normal' ]]; then
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echo '--rotate normal'
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elif [[ "${OPT_ROTATION}" == 'no_change' ]]; then
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echo ''
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else
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echo -n "--rotate ${selection}"
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menu_select "${prompt}" ${menu} || return $?
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fi
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}
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function menu_select() {
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[[ -z "$2" ]] && return ${ERR_BAD_ARGS}
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typeset selection
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typeset prompt
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typeset -a menu
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prompt="$1"
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shift
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menu=($*)
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if [[ ${#menu} == 1 ]]; then
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echo "${menu}"
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else
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while [[ -z "${menu[(r)${selection}]}" ]]; do
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echo "${(F)menu}" | dmenu -p "${prompt}" | read selection
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[[ "${(L)selection}" == 'exit' ]] || [[ -z "${selection}" ]] \
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&& return ${EXIT_CLEAN}
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done
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echo "${selection}"
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fi
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}
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function list_configured_outputs() {
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typeset -a list
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typeset output
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for output in ${(k)OUTPUT_CONFIGURED}; do
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${OUTPUT_CONFIGURED[$output]} && list+=("${output}")
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done
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echo "${(F)list}"
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}
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function list_unconfigured_outputs() {
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typeset -a list
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typeset output
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for output in ${(k)OUTPUT_CONFIGURED}; do
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${OUTPUT_CONFIGURED[$output]} || list+=("${output}")
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done
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echo "${(F)list}"
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}
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function all_outputs_configured() {
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typeset config
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for config in ${OUTPUT_CONFIGURED}; do
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$config || return 257
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done
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return 0
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}
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function bail() {
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[[ "$1" == ${EXIT_CLEAN} ]] && exit 0 || exit "$1"
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}
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main
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