i3 single-window-tiling & auto start app & adaptive scroll speed

i3delta.py

#!/usr/bin/env python
import i3ipc
import re
import mmap

r = re.compile(r"chrom|telegram|Master PDF Editor|typora|thorium", re.I)
fd = open("/tmp/libinput_discrete_deltay_multiplier", "r+b")
m = mmap.mmap(fd.fileno(), 0, access=mmap.ACCESS_WRITE)
state = {"pre_workspace_name": ""}


def on_window_focus(i3, e):
    # scroll
    v = 1
    c = e.container.window_class or e.container.app_id
    if not c:
        return
    if r.search(c):
        v = 2
    m.seek(0)
    m.write(str(v).encode())

    # out = i3.command(f"input type:pointer scroll_factor {v}")[0].ipc_data
    # print(c, v, out)
    # __import__('pdb').set_trace()

    return

    # popup
    ws = i3.get_tree().find_focused().workspace()
    cur_workspace_name = ws.name
    cur_window_title = e.container.window_title
    if e.container.window_title == "popup":
        for w in ws.descendants():
            if w.window_title and w.window_title != "popup":
                print("w.window_title", w.window_title)
                if (
                    state["pre_workspace_name"] == cur_workspace_name
                    and state["pre_window_title"] != cur_window_title
                ):
                    i3.command("workspace back_and_forth")
                else:
                    i3.command(f'[id="{w.window}"] focus')
                break
    state["pre_workspace_name"] = cur_workspace_name
    state["pre_window_title"] = cur_window_title


def on_workspace_focus(i3, e):
    if len(e.current.leaves()):
        return
    w = e.current.name
    if w == "_":
        i3.command("exec --no-startup-id $TERMINAL -T note -e fish -c 'vs 2'")
    elif w == "d":
        i3.command("exec --no-startup-id $TERMINAL -T file -e fish -c n")
    elif w == "2":
        i3.command("exec --no-startup-id $TERMINAL -T htop -e htop")
    elif w == "w":
        i3.command("exec --no-startup-id $BROWSER")
    elif w == "4":
        i3.command("exec --no-startup-id thunar")
    # elif w in ("s", "e", "a", "r", "f"):
    #     i3.command("exec --no-startup-id $TERMINAL")
    elif w == "z":
        i3.command("exec --no-startup-id netease-cloud-music-unblock-enhanced")
    # elif w == "1":
    #     i3.command("exec --no-startup-id nxsession sst")


def kill_previous_instances():
    import os

    current_pid = os.getpid()
    command = f"ps -ef | grep 'python.*{__file__}'"

    process_list = os.popen(command).read().splitlines()

    for process in process_list:
        pid = int(process.split()[1])
        if pid != current_pid:
            os.popen(f"kill {pid} 2>/dev/null")

def on_window_new(i3, e):
    ws = i3.get_tree().find_focused().workspace()
    leaves = ws.leaves()
    if len(leaves) == 1:
        leaves[0].command('floating disable')

def on_window_move(i3, e):
    id = e.container.nodes[0].id
    ws = i3.get_tree().workspaces()
    for ws in ws:
        leaves = ws.leaves()
        if id in (x.id for x in leaves):
            if len(leaves)==1:
                leaves[0].command('floating disable')
            break

kill_previous_instances()

i3 = i3ipc.Connection()
i3.on("window::focus", on_window_focus)
i3.on("window::new", on_window_new)
i3.on("window::move", on_window_move)
i3.on("workspace::focus", on_workspace_focus)
i3.main()