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

   1 #!/usr/bin/python3
   2
   3 # I, Ian Kelling, follow the GNU license recommendations at
   4 # https://www.gnu.org/licenses/license-recommendations.en.html. They
   5 # recommend that small programs, < 300 lines, be licensed under the
   6 # Apache License 2.0. This file contains or is part of one or more small
   7 # programs. If a small program grows beyond 300 lines, I plan to change
   8 # to a recommended GPL license.
   9
  10 # Copyright 2024 Ian Kelling
  11
  12 # Licensed under the Apache License, Version 2.0 (the "License");
  13 # you may not use this file except in compliance with the License.
  14 # You may obtain a copy of the License at
  15
  16 #     http://www.apache.org/licenses/LICENSE-2.0
  17
  18 # Unless required by applicable law or agreed to in writing, software
  19 # distributed under the License is distributed on an "AS IS" BASIS,
  20 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  21 # See the License for the specific language governing permissions and
  22 # limitations under the License.
  23
  24
  25 # This anticipates when we want to tab windows. There are 2 options of
  26 # when to do it: just after a window is created, or just before a window
  27 # is created.
  28 #
  29 # * Doing it after a window is created allows you to move a window into
  30 # the split that only has 1 window, whereas the other way doesn't. For
  31 # my use cases, I think I don't really want to move it into the split if
  32 # it is a tabbed split. upon further reflection, I've determined that
  33 # single window containers are inherently confusing because they tend to
  34 # exist and get nested at unexpected times and then it is unclear how to
  35 # get rid of them and what is going on and the benefit is generally not
  36 # worth it.  This command helps identify single window containers during
  37 # testing: /a/opt/i3ipc-python/examples/i3-debug-console.py
  38 #
  39 # * Doing it just before a windows is created, you need to call this
  40 # script, which means wrapping launch of a program, which I have no way
  41 # to do for all cases, I just do it for the common programs I have bound
  42 # to keys in i3.
  43 #
  44 # * Note: doing it just before a window is created also leaves that split behind if
  45 #   the window is closed, and I don't want single window splits hanging around,
  46 #   so I close them out in
  47 #
  48 # I have a keybind which disables both, it runs /b/ds/i3-auto-layout-toggle
  49 #
  50
  51 import sys
  52 import os
  53 from i3ipc import Connection, Event
  54 # for debugging
  55 #from pprint import pprint
  56
  57
  58 def find_parent(i3, window_id):
  59     """
  60         Find the parent of a given window id
  61     """
  62
  63     def finder(con, parent, gp):
  64         if con.id == window_id:
  65             return (parent, gp)
  66         for node in con.nodes:
  67             res = finder(node, con, parent)
  68             if res:
  69                 return res
  70         return None
  71
  72     return finder(i3.get_tree(), None, None)
  73
  74
  75 def set_layout(i3):
  76     """
  77         Set the layout/split for the currently
  78         focused window to either vertical or
  79         horizontal, depending on its width/height
  80     """
  81
  82     if os.path.isfile("/tmp/iank-i3-no-auto"):
  83         return
  84
  85     win = i3.get_tree().find_focused()
  86     parent, gp = find_parent(i3, win.id)
  87
  88
  89     workspace = win.workspace()
  90     #pprint(vars(workspace.rect))
  91
  92     screen_width = workspace.rect.width
  93     screen_height = workspace.rect.height
  94     half_w =  screen_width / 2 + 1
  95     half_h = screen_height / 2 + 1
  96
  97     w = win.rect.width
  98     h = win.rect.height
  99     ph = parent.rect.height
 100     pw = parent.rect.width
 101
 102     # There is potential for future use with < 1920, but I'm
 103     # not thinking about it yet.
 104     if ( screen_width < 1920 or parent.layout == 'tabbed' or gp.layout == 'tabbed'):
 105         return
 106
 107     # print('d2: len(parent.nodes)', len(parent.nodes),' > 1',
 108     #       'and ( ph ',ph,' > h + 10',h + 10,' or pw',pw,' > w',w,' )',
 109     #       'and w <= half_w',half_w,'+ and h <= half_h',half_h)
 110
 111     # h + 10 because a tabbed window loses high compared to its parent.
 112     # Note, it is redundant since we check above if the parent is tabbed,
 113     # but just being cautious.
 114     if (len(parent.nodes) > 1
 115         and ( ph > h + 10 or pw > w )
 116         and w <= half_w and h <= half_h ):
 117        i3.command('split vertical, layout tabbed')
 118 #       print('d1: tabbed')
 119
 120
 121 ### further potential use cases:
 122
 123 # We could automatically do a vertical split when there are 2 or 3
 124 # horizontal windows.
 125
 126 # We could undo a vertical split when we close out windows.
 127 # elif (( w == screen_width )); then
 128 #   # if we had 2 windows on screen, made them vertical splits, then
 129 #   # closed one, it stays vertical split, but we want it horizontal at
 130 #   # that point. So, make it horizontal here.
 131 #   m i3-msg "split horizontal"
 132
 133
 134 def main():
 135     i3 = Connection()
 136     set_layout(i3)
 137
 138
 139 if __name__ == "__main__":
 140     main()