#!/usr/bin/env bash quote() { local q="$(printf '%q ' "$@")" printf '%s' "${q% }" } if [[ -f /usr/lib/bash/sleep ]]; then # load and enable 'sleep' builtin (does not support unit suffixes: h, m, s!) # requires pkg 'bash-builtins' on debian; included in 'bash' on arch. enable -f /usr/lib/bash/sleep sleep fi hc_quoted="$(quote "${herbstclient_command[@]:-herbstclient}")" hc() { "${herbstclient_command[@]:-herbstclient}" "$@" ;} monitor=${1:-0} geometry=( $(hc monitor_rect "$monitor") ) if [ -z "$geometry" ] ;then echo "Invalid monitor $monitor" exit 1 fi # geometry has the format W H X Y x=${geometry[0]} y=${geometry[1]} panel_width=${geometry[2]} panel_height=16 font="${hlwm_font:=-*-fixed-medium-*-*-*-12-*-*-*-*-*-*-*}" # extract colors from hlwm and omit alpha-value bgcolor=$(hc get frame_border_normal_color|sed 's,^\(\#[0-9a-f]\{6\}\)[0-9a-f]\{2\}$,\1,') selbg=$(hc get window_border_active_color|sed 's,^\(\#[0-9a-f]\{6\}\)[0-9a-f]\{2\}$,\1,') selfg='#101010' #### # Try to find textwidth binary. # In e.g. Ubuntu, this is named dzen2-textwidth. if which textwidth &> /dev/null ; then textwidth="textwidth"; elif which dzen2-textwidth &> /dev/null ; then textwidth="dzen2-textwidth"; elif which xftwidth &> /dev/null ; then # For guix textwidth="xftwidth"; else echo "This script requires the textwidth tool of the dzen2 project." exit 1 fi #### # true if we are using the svn version of dzen2 # depending on version/distribution, this seems to have version strings like # "dzen-" or "dzen-x.x.x-svn" if dzen2 -v 2>&1 | head -n 1 | grep -q '^dzen-\([^,]*-svn\|\),'; then dzen2_svn="true" else dzen2_svn="" fi if awk -Wv 2>/dev/null | head -1 | grep -q '^mawk'; then # mawk needs "-W interactive" to line-buffer stdout correctly # http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=593504 uniq_linebuffered() { awk -W interactive '$0 != l { print ; l=$0 ; fflush(); }' "$@" } else # other awk versions (e.g. gawk) issue a warning with "-W interactive", so # we don't want to use it there. uniq_linebuffered() { awk '$0 != l { print ; l=$0 ; fflush(); }' "$@" } fi hc pad $monitor $panel_height { ### Event generator ### # based on different input data (mpc, date, hlwm hooks, ...) this generates events, formed like this: # \t [...] # e.g. # date ^fg(#efefef)18:33^fg(#909090), 2013-10-^fg(#efefef)29 #mpc idleloop player & while true ; do # output is checked once a second, but a "date" event is only # generated if the output changed compared to the previous run. printf 'date\t^fg(#efefef)%(%H:%M)T^fg(#909090), %(%Y-%m)T-^fg(#efefef)%(%d)T\n' sleep 1 || break done > >(uniq_linebuffered) & childpid=$! hc --idle kill $childpid } 2> /dev/null | { IFS=$'\t' read -ra tags <<< "$(hc tag_status $monitor)" visible=true date="" windowtitle="" while true ; do ### Output ### # This part prints dzen data based on the _previous_ data handling run, # and then waits for the next event to happen. separator="^bg()^fg($selbg)|" # draw tags for i in "${tags[@]}" ; do case ${i:0:1} in '#') echo -n "^bg($selbg)^fg($selfg)" ;; '+') echo -n "^bg(#9CA668)^fg(#141414)" ;; ':') echo -n "^bg()^fg(#ffffff)" ;; '!') echo -n "^bg(#FF0675)^fg(#141414)" ;; *) echo -n "^bg()^fg(#ababab)" ;; esac if [ ! -z "$dzen2_svn" ] ; then # clickable tags if using SVN dzen echo -n "^ca(1,$hc_quoted focus_monitor \"$monitor\" && " echo -n "$hc_quoted use \"${i:1}\") ${i:1} ^ca()" else # non-clickable tags if using older dzen echo -n " ${i:1} " fi done echo -n "$separator" echo -n "^bg()^fg() ${windowtitle//^/^^}" # small adjustments right="$separator^bg() $date $separator" right_text_only=$(echo -n "$right" | sed 's.\^[^(]*([^)]*)..g') # get width of right aligned text.. and add some space.. width=$($textwidth "$font" "$right_text_only ") echo -n "^pa($(($panel_width - $width)))$right" echo ### Data handling ### # This part handles the events generated in the event loop, and sets # internal variables based on them. The event and its arguments are # read into the array cmd, then action is taken depending on the event # name. # "Special" events (quit_panel/togglehidepanel/reload) are also handled # here. # wait for next event IFS=$'\t' read -ra cmd || break # find out event origin case "${cmd[0]}" in tag*) #echo "resetting tags" >&2 IFS=$'\t' read -ra tags <<< "$(hc tag_status $monitor)" ;; date) #echo "resetting date" >&2 date="${cmd[@]:1}" ;; quit_panel) exit ;; togglehidepanel) currentmonidx=$(hc list_monitors | sed -n '/\[FOCUS\]$/s/:.*//p') if [ "${cmd[1]}" -ne "$monitor" ] ; then continue fi if [ "${cmd[1]}" = "current" ] && [ "$currentmonidx" -ne "$monitor" ] ; then continue fi echo "^togglehide()" if $visible ; then visible=false hc pad $monitor 0 else visible=true hc pad $monitor $panel_height fi ;; reload) exit ;; focus_changed|window_title_changed) windowtitle="${cmd[@]:2}" ;; #player) # ;; esac done ### dzen2 ### # After the data is gathered and processed, the output of the previous block # gets piped to dzen2. } | dzen2 -w $panel_width -x $x -y $y -fn "$font" -h $panel_height \ -e "button3=;button4=exec:$hc_quoted use_index -1;button5=exec:$hc_quoted use_index +1" \ -ta l -bg "$bgcolor" -fg '#efefef'