i3zen

#!/bin/bash

# i3zen - move current window to a "clean" workspace,
# put the window between two ghosts (centered).
# if the window already is "zen", move it back to its
# original workspace. If the window is not in zen but
# another window is, both of them will be zen in a tabbed
# container.
# 
# https://www.reddit.com/r/i3wm/comments/6x8ajm/oc_i3zen/
# https://gist.github.com/budRich/16765b5468201aa734d0ec1c0870fd0c

I3GET_PATH=$HOME/bin/i3get # this script requires i3get
I3GW_PATH=$HOME/bin/i3gw   # this script requires i3gw
# https://www.reddit.com/r/i3wm/comments/6wyarw/oc_i3get/
# https://www.reddit.com/r/i3wm/comments/6x5vgp/oc_i3gw/

# ZEN_WORKSPACE - set this to the workspace number you want to use for zen
# leave it empty if you want the script to use the next empty ws.
ZEN_WORKSPACE=

ZEN_SIZE=75 # how many percent of the screenwidth the zen window is

current=($(${I3GET_PATH} -r nwf)) # id,ws and floating state of current window.
zws=$(${I3GET_PATH} -m centerzen -r w) # check if zen already exist

# if zen ws doesnt exist, create zen layout.
if [[ -z $zws ]]; then
  wrks=$(i3-msg -t get_workspaces)
  [[ -n $ZEN_WORKSPACE ]] && zws=$ZEN_WORKSPACE || \
  zws=$(($(printf "$wrks" | awk -F':' -v RS=',' \
    '$1~"num"{fws=$2}
    END{print fws}')+1))

  ${I3GW_PATH} leftzen
  ${I3GW_PATH} centerzen
  ${I3GW_PATH} rightzen
  i3-msg [con_mark=leftzen] \
    move to workspace $zws, layout splith
  i3-msg [con_mark=rightzen] \
    move to workspace $zws, move to mark leftzen
  i3-msg [con_mark=centerzen] \
    move to workspace $zws, move to mark leftzen
  i3-msg [con_mark=leftzen] move left
  i3-msg [con_mark=rightzen] move right
  i3-msg [con_mark=centerzen] split h, layout tabbed
  [[ ${current[2]#*_} != 'on"' ]] && fs=t || fs=f
  i3-msg [con_id=${current[0]}] \
    move to workspace $zws, floating disable, \
    move to mark centerzen, \
    mark "$fs-${current[0]}-${current[1]}"
  i3-msg [con_mark=centerzen] \
    mark tmpzen, focus, focus parent
  i3-msg mark centerzen
  i3-msg [con_mark=tmpzen] kill
  i3-msg [con_id=${current[0]}] focus
  i3-msg workspace $zws

  # size the container.
  # 33% is the initial width of the container
  # if ZEN_SIZE equals 33, don't resize
  if [[ $ZEN_SIZE -ne 33 ]]; then
    perca=$((ZEN_SIZE-33))
    # if perca is less then 0, shrink the container, invert perca
    dir=grow
    [[ $perca -lt 0 ]] && perca=$((perca*-1)) && dir=shrink
    i3-msg [con_id=${current[0]}] \
      resize $dir width $perca or $perca ppt
  fi
# zen exist but current window isn't there. Send it to zen.
elif [[ $zws != ${current[1]} ]]; then
  i3-msg [con_id=${current[0]}] \
    move to workspace $zws, \
    floating disable, \
    move to mark centerzen, \
    mark "${current[0]}-${current[1]}", focus
  i3-msg workspace $zws
# window is already in zen, send it back to its original ws
elif [[ ${current[2]#*_} != 'on"' ]]; then
  mrk=$(${I3GET_PATH} -r m)
  mrk=${mrk:2:-2}
  ows=${mrk##*${current[0]}'-'}
  ofs=${mrk%%'-'${current[0]}*}
  i3-msg [con_id=${current[0]}] floating enable, move to workspace $ows
  # if zen is empty, kill the zen, let it die
  zct=$(i3-msg -t get_tree | awk -v RS=',' -F':' \
    ' BEGIN{hit="0"}
      hit=="2" && $1=="\"focus\"" {print $2;exit}
      hit=="1" && $1=="\"swallows\"" && $2=="[]}]"{hit="2"}
      $1=="\"marks\"" && $2 ~ "centerzen" {hit="1"}
    ')
  echo the rich "${zct}"
  if [[ $zct = '[]' ]] || [[ -z $zct ]]; then
    i3-msg [con_mark=leftzen] kill
    i3-msg [con_mark=rightzen] kill
    i3-msg [con_mark=centerzen] kill
    # echo the poor
  fi
  i3-msg workspace $ows
  [[ $ofs != f ]] && i3-msg [con_id=${current[0]}] floating disable
  i3-msg [con_id=${current[0]}] focus
# window is on zen ws, but not in zen container (floating)
else
  [[ ${current[2]#*_} != 'on"' ]] && fs=t || fs=f
  i3-msg [con_id=${current[0]}] \
    floating disable, move to mark centerzen, \
    mark "$fs-${current[0]}-${current[1]}", focus
fi