iankelling.org Git - distro-setup/blob - i3-split-maybe

   1 #!/bin/bash
   2 # I, Ian Kelling, follow the GNU license recommendations at
   3 # https://www.gnu.org/licenses/license-recommendations.en.html. They
   4 # recommend that small programs, < 300 lines, be licensed under the
   5 # Apache License 2.0. This file contains or is part of one or more small
   6 # programs. If a small program grows beyond 300 lines, I plan to switch
   7 # its license to GPL.
   8
   9 # Copyright 2024 Ian Kelling
  10
  11 # Licensed under the Apache License, Version 2.0 (the "License");
  12 # you may not use this file except in compliance with the License.
  13 # You may obtain a copy of the License at
  14
  15 #     http://www.apache.org/licenses/LICENSE-2.0
  16
  17 # Unless required by applicable law or agreed to in writing, software
  18 # distributed under the License is distributed on an "AS IS" BASIS,
  19 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  20 # See the License for the specific language governing permissions and
  21 # limitations under the License.
  22
  23
  24 set -e; . /usr/local/lib/bash-bear; set +e
  25
  26 # We use this along with
  27 # /a/opt/i3-alternating-layout/alternating_layouts.py to anticipate when
  28 # we want to split/tab windows. There are 2 options of when to do it:
  29 # just after a window is created, or just before a window is
  30 # created.
  31 #
  32 # * Doing it after a window is created allows you to move a window into
  33 # the split that only has 1 window, whereas the other way doesn't. For
  34 # my use cases, I think I don't really want to move it into the split if
  35 # it is a tabbed split. upon further reflection, I've determined that
  36 # single window containers are inherently confusing because they tend to
  37 # exist and get nested at unexpected times and then it is unclear how to
  38 # get rid of them and what is going on and the benefit is generally not
  39 # worth it.  This command helps identify single window containers during
  40 # testing: /a/opt/i3ipc-python/examples/i3-debug-console.py
  41 #
  42 # * Doing it just before a windows is created, you need to call this
  43 # script, which means wrapping launch of a program, which I have no way
  44 # to do for all cases, I just do it for the common programs I have bound
  45 # to keys in i3.
  46 #
  47 # * Doing it after a window is created also leaves that split behind if
  48 #   the window is closed. I partially deal with that below.
  49 #
  50 # I have a keybind which disables both, it runs /b/ds/i3-auto-layout-toggle
  51
  52
  53 dry_run=false
  54 m() { "$@"; }
  55 d() {
  56   if $dry_run; then
  57     printf "%s\n" "$*"
  58   fi
  59 }
  60 case $1 in
  61   -n)
  62     dry_run=true
  63     m() { printf "%s\n" "$*"; }
  64     ;;
  65 esac
  66
  67 if [[ -e /tmp/iank-i3-no-auto ]]; then
  68   exit 0
  69 fi
  70
  71
  72 tmp=$(mktemp)
  73
  74 i3-msg -t get_workspaces | jq ".[]| select(.focused==true) | .rect | .width, .height" >$tmp
  75
  76 { read -r screen_width; read -r screen_height; } <$tmp
  77
  78 i3-msg -t get_tree | jq -r ".. | select(.focused? == true).rect | .width, .height" >$tmp
  79
  80 half_w=$(( screen_width / 2  ))
  81 half_h=$(( screen_height / 2  ))
  82
  83
  84 { read -r w; read -r h; } <$tmp
  85
  86 d w=$w , h=$h , half_w=$half_w , half_h=$half_h
  87
  88 if (( screen_width < 1920 )); then
  89   # haven't considered this case yet
  90   exit 0
  91 fi
  92
  93
  94 if (( w <= half_w && h <= half_h )); then
  95   m i3-msg "split vertical, layout tabbed"
  96 elif (( w == screen_width )); then
  97   # if we had 2 windows on screen, made them vertical splits, then
  98   # closed one, it stays vertical split, but we want it horizontal at
  99   # that point. So, make it horizontal here.
 100   m i3-msg "split horizontal"
 101 fi
 102
 103 rm -f $tmp