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.
  36 #
  37 # *Doing it just before a windows is created, you need to
  38 # call this script, which means wrapping launch of a program, which I
  39 # have no way to do for all cases, I just do it for the common programs
  40 # I have bound to keys in i3.
  41 #
  42 # * Doing it after a window is created also leaves that split behind if
  43 # * the window is closed. I partially deal with that below.
  44 #
  45 # I have a keybind which disables both, it runs /b/ds/i3-auto-layout-toggle
  46
  47 if [[ -e /tmp/iank-i3-no-auto ]]; then
  48   exit 0
  49 fi
  50
  51
  52 tmp=$(mktemp)
  53
  54 i3-msg -t get_workspaces | jq ".[]| select(.focused==true) | .rect | .width, .height" >$tmp
  55
  56 { read -r screen_width; read -r screen_height; } <$tmp
  57
  58 i3-msg -t get_tree | jq -r ".. | select(.focused? == true).rect | .width, .height" >$tmp
  59
  60 half_w=$(( screen_width / 2 + 100 ))
  61 half_h=$(( screen_height / 2 + 100 ))
  62
  63
  64 { read -r w; read -r h; } <$tmp
  65
  66
  67 if (( screen_width < 1920 )); then
  68   # haven't considered this case yet
  69   exit 0
  70 fi
  71
  72 if (( w < half_w && h < half_h )); then
  73   i3-msg "split vertical, layout tabbed"
  74 elif (( w == screen_width )); then
  75   :
  76   # if we had 2 windows on screen, made them vertical splits, then
  77   # closed one, it stays vertical split, but we want it horizontal at
  78   # that point. So, make it horizontal here.
  79   i3-msg "split horizontal"
  80 fi
  81
  82 rm -f $tmp