nix-config/config/awesome/rc.lua

-- If LuaRocks is installed, make sure that packages installed through it are
-- found (e.g. lgi). If LuaRocks is not installed, do nothing.
pcall(require, "luarocks.loader")

-- Standard awesome library
local awful = require "awful"
local gears = require "gears"
require "awful.autofocus"

-- Widget and layout library
local wibox = require "wibox"

-- Theme handling library
local beautiful = require "beautiful"

-- Notification library
local hotkeys_popup = require "awful.hotkeys_popup"
local menubar = require "menubar"
local naughty = require "naughty"

-- Enable hotkeys help widget for VIM and other apps
-- when client with a matching name is opened:
require "awful.hotkeys_popup.keys"

-- {{{ Error handling
-- Check if awesome encountered an error during startup and fell back to
-- another config (This code will only ever execute for the fallback config)
if awesome.startup_errors then
  naughty.notify {
    preset = naughty.config.presets.critical,
    title = "Oops, there were errors during startup!",
    text = awesome.startup_errors,
  }
end

-- Handle runtime errors after startup
do
  local in_error = false
  awesome.connect_signal("debug::error", function(err)
    -- Make sure we don't go into an endless error loop
    if in_error then
      return
    end
    in_error = true

    naughty.notify {
      preset = naughty.config.presets.critical,
      title = "Oops, an error happened!",
      text = tostring(err),
    }
    in_error = false
  end)
end
-- }}}

-- {{{ Variable definitions
-- Themes define colours, icons, font and wallpapers.
beautiful.init(gears.filesystem.get_configuration_dir() .. "theme.lua")

awful.spawn.with_shell "awesome-autostart"

-- This is used later as the default terminal and editor to run.
terminal = "alacritty"
editor = os.getenv "EDITOR" or "nano"
editor_cmd = terminal .. " -e " .. editor

-- Default modkey.
-- Usually, Mod4 is the key with a logo between Control and Alt.
-- If you do not like this or do not have such a key,
-- I suggest you to remap Mod4 to another key using xmodmap or other tools.
-- However, you can use another modifier like Mod1, but it may interact with others.
modkey = "Mod4"

-- Table of layouts to cover with awful.layout.inc, order matters.
awful.layout.layouts = {
  awful.layout.suit.tile,
  -- awful.layout.suit.floating,
  -- awful.layout.suit.max,
  -- awful.layout.suit.tile.left,
  -- awful.layout.suit.tile.bottom,
  -- awful.layout.suit.tile.top,
  -- awful.layout.suit.fair,
  -- awful.layout.suit.fair.horizontal,
  -- awful.layout.suit.spiral,
  -- awful.layout.suit.spiral.dwindle,
  -- awful.layout.suit.max.fullscreen,
  -- awful.layout.suit.magnifier,
  -- awful.layout.suit.corner.nw,
  -- awful.layout.suit.corner.ne,
  -- awful.layout.suit.corner.sw,
  -- awful.layout.suit.corner.se,
}
-- }}}

-- {{{ Menu
-- Create a launcher widget and a main menu
myawesomemenu = {
  {
    "hotkeys",
    function()
      hotkeys_popup.show_help(nil, awful.screen.focused())
    end,
  },
  { "manual", terminal .. " -e man awesome" },
  { "edit config", editor_cmd .. " " .. awesome.conffile },
  { "restart", awesome.restart },
  {
    "quit",
    function()
      awesome.quit()
    end,
  },
}

mymainmenu = awful.menu {
  items = {
    { "awesome", myawesomemenu, beautiful.awesome_icon },
    { "open terminal", terminal },
  },
}

mylauncher = awful.widget.launcher { image = beautiful.awesome_icon, menu = mymainmenu }

-- Menubar configuration
menubar.utils.terminal = terminal -- Set the terminal for applications that require it
-- }}}

-- Keyboard map indicator and switcher
mykeyboardlayout = awful.widget.keyboardlayout()

-- {{{ Wibar
-- Create a textclock widget
mytextclock = wibox.widget.textclock()

-- Create a wibox for each screen and add it
local taglist_buttons = gears.table.join(
  awful.button({}, 1, function(t)
    t:view_only()
  end),
  awful.button({ modkey }, 1, function(t)
    if client.focus then
      client.focus:move_to_tag(t)
    end
  end),
  awful.button({}, 3, awful.tag.viewtoggle),
  awful.button({ modkey }, 3, function(t)
    if client.focus then
      client.focus:toggle_tag(t)
    end
  end),
  awful.button({}, 4, function(t)
    awful.tag.viewnext(t.screen)
  end),
  awful.button({}, 5, function(t)
    awful.tag.viewprev(t.screen)
  end)
)

local tasklist_buttons = gears.table.join(
  awful.button({}, 1, function(c)
    if c == client.focus then
      c.minimized = true
    else
      c:emit_signal("request::activate", "tasklist", { raise = true })
    end
  end),
  awful.button({}, 3, function()
    awful.menu.client_list { theme = { width = 250 } }
  end),
  awful.button({}, 4, function()
    awful.client.focus.byidx(1)
  end),
  awful.button({}, 5, function()
    awful.client.focus.byidx(-1)
  end)
)

local function set_wallpaper(s)
  -- Wallpaper
  if beautiful.wallpaper then
    local wallpaper = beautiful.wallpaper
    -- If wallpaper is a function, call it with the screen
    if type(wallpaper) == "function" then
      wallpaper = wallpaper(s)
    end
    gears.wallpaper.maximized(wallpaper, s, true)
  end
end

-- Re-set wallpaper when a screen's geometry changes (e.g. different resolution)
screen.connect_signal("property::geometry", set_wallpaper)

awful.screen.connect_for_each_screen(function(s)
  -- Wallpaper
  set_wallpaper(s)

  -- Each screen has its own tag table.
  awful.tag({ "1", "2", "3", "4", "5", "6", "7", "8", "9" }, s, awful.layout.layouts[1])

  -- Create a promptbox for each screen
  s.mypromptbox = awful.widget.prompt()

  -- Create an imagebox widget which will contain an icon indicating which layout we're using.
  -- We need one layoutbox per screen.
  s.mylayoutbox = awful.widget.layoutbox(s)
  s.mylayoutbox:buttons(gears.table.join(
    awful.button({}, 1, function()
      awful.layout.inc(1)
    end),
    awful.button({}, 3, function()
      awful.layout.inc(-1)
    end),
    awful.button({}, 4, function()
      awful.layout.inc(1)
    end),
    awful.button({}, 5, function()
      awful.layout.inc(-1)
    end)
  ))
  -- Create a taglist widget
  s.mytaglist = awful.widget.taglist {
    screen = s,
    filter = awful.widget.taglist.filter.all,
    buttons = taglist_buttons,
  }

  -- Create a tasklist widget
  s.mytasklist = awful.widget.tasklist {
    screen = s,
    filter = awful.widget.tasklist.filter.currenttags,
    buttons = tasklist_buttons,
  }

  -- Create the wibox
  s.mywibox = awful.wibar { position = "top", screen = s }

  -- Add widgets to the wibox
  s.mywibox:setup {
    layout = wibox.layout.align.horizontal,
    { -- Left widgets
      layout = wibox.layout.fixed.horizontal,
      s.mytaglist,
      s.mypromptbox,
    },
    s.mytasklist, -- Middle widget
    { -- Right widgets
      layout = wibox.layout.fixed.horizontal,
      -- mykeyboardlayout,
      wibox.widget.systray(),
      require "widgets.battery",
      mytextclock,
      -- s.mylayoutbox,
    },
  }
end)
-- }}}

-- {{{ Mouse bindings
root.buttons(gears.table.join(
  awful.button({}, 3, function()
    mymainmenu:toggle()
  end),
  awful.button({}, 4, awful.tag.viewnext),
  awful.button({}, 5, awful.tag.viewprev)
))
-- }}}

-- {{{ Key bindings
globalkeys = gears.table.join(
  awful.key({ modkey }, "s", hotkeys_popup.show_help, { description = "show help", group = "awesome" }),

  awful.key({ modkey }, "Left", awful.tag.viewprev, { description = "view previous", group = "tag" }),

  awful.key({ modkey }, "Right", awful.tag.viewnext, { description = "view next", group = "tag" }),

  awful.key({ modkey }, "Escape", awful.tag.history.restore, { description = "go back", group = "tag" }),

  awful.key({ modkey }, "j", function()
    awful.client.focus.byidx(-1)
  end, { description = "focus previous by index", group = "client" }),

  awful.key({ modkey }, "k", function()
    awful.client.focus.byidx(1)
  end, { description = "focus next by index", group = "client" }),

  awful.key({ modkey }, "n", function()
    awful.util.spawn "alacritty --class notetaker_window --command notetaker"
  end, { description = "open today's daily note", group = "client" }),

  awful.key({ modkey }, "w", function()
    mymainmenu:show()
  end, { description = "show main menu", group = "awesome" }),

  -- Layout manipulation
  awful.key({ modkey, "Shift" }, "j", function()
    awful.client.swap.byidx(-1)
  end, { description = "swap with previous client by index", group = "client" }),

  awful.key({ modkey, "Shift" }, "k", function()
    awful.client.swap.byidx(1)
  end, { description = "swap with next client by index", group = "client" }),

  awful.key({ modkey, "Control" }, "j", function()
    awful.screen.focus_relative(-1)
  end, { description = "focus the previous screen", group = "screen" }),

  awful.key({ modkey, "Control" }, "k", function()
    awful.screen.focus_relative(1)
  end, { description = "focus the next screen", group = "screen" }),

  awful.key({ modkey }, "u", awful.client.urgent.jumpto, { description = "jump to urgent client", group = "client" }),

  awful.key({ modkey }, "Tab", function()
    awful.client.focus.history.previous()
    if client.focus then
      client.focus:raise()
    end
  end, { description = "go back", group = "client" }),

  -- Standard program
  awful.key({ modkey }, "Return", function()
    awful.spawn(terminal)
  end, { description = "open a terminal", group = "launcher" }),

  awful.key({ modkey, "Control" }, "r", awesome.restart, { description = "reload awesome", group = "awesome" }),

  awful.key({ modkey, "Shift" }, "q", awesome.quit, { description = "quit awesome", group = "awesome" }),

  awful.key({ modkey }, "l", function()
    awful.tag.incmwfact(0.05)
  end, { description = "increase master width factor", group = "layout" }),

  awful.key({ modkey }, "h", function()
    awful.tag.incmwfact(-0.05)
  end, { description = "decrease master width factor", group = "layout" }),

  awful.key({ modkey, "Shift" }, "h", function()
    awful.tag.incnmaster(1, nil, true)
  end, { description = "increase the number of master clients", group = "layout" }),

  awful.key({ modkey, "Shift" }, "l", function()
    awful.tag.incnmaster(-1, nil, true)
  end, { description = "decrease the number of master clients", group = "layout" }),

  awful.key({ modkey, "Control" }, "h", function()
    awful.tag.incncol(1, nil, true)
  end, { description = "increase the number of columns", group = "layout" }),

  awful.key({ modkey, "Control" }, "l", function()
    awful.tag.incncol(-1, nil, true)
  end, { description = "decrease the number of columns", group = "layout" }),

  awful.key({ modkey }, "space", function()
    awful.layout.inc(1)
  end, { description = "select next", group = "layout" }),

  awful.key({ modkey, "Shift" }, "space", function()
    awful.layout.inc(-1)
  end, { description = "select previous", group = "layout" }),

  awful.key({ modkey, "Control" }, "n", function()
    local c = awful.client.restore()
    -- Focus restored client
    if c then
      c:emit_signal("request::activate", "key.unminimize", { raise = true })
    end
  end, { description = "restore minimized", group = "client" }),

  -- Prompt
  awful.key({ modkey }, "r", function()
    awful.screen.focused().mypromptbox:run()
  end, { description = "run prompt", group = "launcher" }),

  awful.key({ modkey, "Shift" }, "b", function()
    awful.spawn "brave"
  end, { description = "run browser", group = "launcher" }),

  awful.key({ modkey, "Shift" }, "f", function()
    awful.spawn "thunar"
  end, { description = "run browser", group = "launcher" }),

  awful.key({ modkey, "Shift" }, "s", function()
    awful.spawn "flameshot gui"
  end, { description = "run flameshot", group = "launcher" }),

  awful.key({ modkey, "Shift" }, "y", function()
    awful.spawn "copyq toggle"
  end, { description = "run copyq", group = "launcher" }),

  awful.key({ modkey }, "x", function()
    awful.prompt.run {
      prompt = "Run Lua code: ",
      textbox = awful.screen.focused().mypromptbox.widget,
      exe_callback = awful.util.eval,
      history_path = awful.util.get_cache_dir() .. "/history_eval",
    }
  end, { description = "lua execute prompt", group = "awesome" }),

  -- Menubar
  awful.key({ modkey }, "p", function()
    menubar.show()
  end, { description = "show the menubar", group = "launcher" }),

  -- Sound and volume keys
  awful.key({}, "XF86AudioRaiseVolume", function()
    awful.util.spawn "amixer -D pulse set Master '1000+'"
  end),

  awful.key({}, "XF86AudioLowerVolume", function()
    awful.util.spawn "amixer -D pulse set Master '1000-'"
  end),

  awful.key({}, "XF86AudioMute", function()
    awful.util.spawn "amixer -D pulse set Master toggle"
  end),

  awful.key({ "Shift" }, "XF86AudioRaiseVolume", function()
    awful.util.spawn "pamixer -i 10"
  end),

  awful.key({ "Shift" }, "XF86AudioLowerVolume", function()
    awful.util.spawn "pamixer -d 10"
  end),

  awful.key({}, "XF86AudioMicMute", function()
    awful.util.spawn "pamixer --mute"
  end),

  awful.key({}, "XF86MonBrightnessDown", function()
    awful.util.spawn "brightnessctl specific '10%-'"
  end),

  awful.key({}, "XF86MonBrightnessUp", function()
    awful.util.spawn "brightnessctl specific '+10%'"
  end)
)

clientkeys = gears.table.join(
  awful.key({ modkey }, "f", function(c)
    c.fullscreen = not c.fullscreen
    c:raise()
  end, { description = "toggle fullscreen", group = "client" }),

  awful.key({ modkey, "Shift" }, "c", function(c)
    c:kill()
  end, { description = "close", group = "client" }),

  awful.key(
    { modkey, "Control" },
    "space",
    awful.client.floating.toggle,
    { description = "toggle floating", group = "client" }
  ),

  awful.key({ modkey, "Control" }, "Return", function(c)
    c:swap(awful.client.getmaster())
  end, { description = "move to master", group = "client" }),

  awful.key({ modkey }, "o", function(c)
    c:move_to_screen()
  end, { description = "move to screen", group = "client" }),

  awful.key({ modkey }, "t", function(c)
    c.ontop = not c.ontop
  end, { description = "toggle keep on top", group = "client" }),

  awful.key({ modkey }, "n", function(c)
    -- The client currently has the input focus, so it cannot be
    -- minimized, since minimized clients can't have the focus.
    c.minimized = true
  end, { description = "minimize", group = "client" }),

  awful.key({ modkey }, "m", function(c)
    c.maximized = not c.maximized
    c:raise()
  end, { description = "(un)maximize", group = "client" }),

  awful.key({ modkey, "Control" }, "m", function(c)
    c.maximized_vertical = not c.maximized_vertical
    c:raise()
  end, { description = "(un)maximize vertically", group = "client" }),

  awful.key({ modkey, "Shift" }, "m", function(c)
    c.maximized_horizontal = not c.maximized_horizontal
    c:raise()
  end, { description = "(un)maximize horizontally", group = "client" })
)

-- Bind all key numbers to tags.
-- Be careful: we use keycodes to make it work on any keyboard layout.
-- This should map on the top row of your keyboard, usually 1 to 9.
for i = 1, 9 do
  globalkeys = gears.table.join(
    globalkeys,

    -- View tag only.
    awful.key({ modkey }, "#" .. i + 9, function()
      local screen = awful.screen.focused()
      local tag = screen.tags[i]
      if tag then
        tag:view_only()
      end
    end, { description = "view tag #" .. i, group = "tag" }),

    awful.key({ modkey }, "b", function()
      local myscreen = awful.screen.focused()
      myscreen.mywibox.visible = not myscreen.mywibox.visible
    end, { description = "toggle statusbar" }),

    -- Toggle tag display.
    awful.key({ modkey, "Control" }, "#" .. i + 9, function()
      local screen = awful.screen.focused()
      local tag = screen.tags[i]
      if tag then
        awful.tag.viewtoggle(tag)
      end
    end, { description = "toggle tag #" .. i, group = "tag" }),

    -- Move client to tag.
    awful.key({ modkey, "Shift" }, "#" .. i + 9, function()
      if client.focus then
        local tag = client.focus.screen.tags[i]
        if tag then
          client.focus:move_to_tag(tag)
        end
      end
    end, { description = "move focused client to tag #" .. i, group = "tag" }),

    -- Toggle tag on focused client.
    awful.key({ modkey, "Control", "Shift" }, "#" .. i + 9, function()
      if client.focus then
        local tag = client.focus.screen.tags[i]
        if tag then
          client.focus:toggle_tag(tag)
        end
      end
    end, { description = "toggle focused client on tag #" .. i, group = "tag" })
  )
end

clientbuttons = gears.table.join(
  awful.button({}, 1, function(c)
    c:emit_signal("request::activate", "mouse_click", { raise = true })
  end),

  awful.button({ modkey }, 1, function(c)
    c:emit_signal("request::activate", "mouse_click", { raise = true })
    awful.mouse.client.move(c)
  end),

  awful.button({ modkey }, 3, function(c)
    c:emit_signal("request::activate", "mouse_click", { raise = true })
    awful.mouse.client.resize(c)
  end)
)

-- Set keys
root.keys(globalkeys)
-- }}}

-- {{{ Rules
-- Rules to apply to new clients (through the "manage" signal).
awful.rules.rules = {
  -- All clients will match this rule.
  {
    rule = {},
    properties = {
      border_width = beautiful.border_width,
      border_color = beautiful.border_normal,
      focus = awful.client.focus.filter,
      raise = true,
      keys = clientkeys,
      buttons = clientbuttons,
      screen = awful.screen.preferred,
      placement = awful.placement.no_overlap + awful.placement.no_offscreen,
    },
  },

  -- Floating clients.
  {
    rule_any = {
      instance = {
        "DTA", -- Firefox addon DownThemAll.
        "copyq", -- Includes session name in class.
        "pinentry",
      },

      class = {
        "Arandr",
        "Blueman-manager",
        "Gpick",
        "Kruler",
        "MessageWin", -- kalarm.
        "Sxiv",
        "Tor Browser", -- Needs a fixed window size to avoid fingerprinting by screen size.
        "Wpa_gui",
        "notetaker_window",
        "veromix",
        "xtightvncviewer",
        "zoom",
      },

      -- Note that the name property shown in xprop might be set slightly after creation of the client
      -- and the name shown there might not match defined rules here.
      name = {
        "Event Tester", -- xev.
      },

      role = {
        "AlarmWindow", -- Thunderbird's calendar.
        "ConfigManager", -- Thunderbird's about:config.
        "pop-up", -- e.g. Google Chrome's (detached) Developer Tools.
      },
    },

    properties = { floating = true, placement = awful.placement.centered },
  },

  -- Add titlebars to normal clients and dialogs
  { rule_any = { type = { "normal", "dialog" } }, properties = { titlebars_enabled = false } },

  -- Set Firefox to always map on the tag named "2" on screen 1.
  -- { rule = { class = "Firefox" },
  --   properties = { screen = 1, tag = "2" } },

  { rule = { class = "brave" }, properties = { opacity = 1, maximized = false, floating = false } },
  { rule = { class = "mpv" }, properties = { tag = "5", fullscreen = true } },
  { rule = { name = "Podcasts - Pocket Casts" }, properties = { tag = "6" } },
  { rule = { class = "kdenlive" }, properties = { tag = "7" } },
  { rule = { class = "0ad" }, properties = { tag = "8", fullscreen = true } },
  { rule = { class = "Slack" }, properties = { tag = "9" } },
  { rule = { class = "discord" }, properties = { tag = "9" } },
}
-- }}}

-- {{{ Signals
-- Signal function to execute when a new client appears.
client.connect_signal("manage", function(c)
  -- Set the windows at the slave,
  -- i.e. put it at the end of others instead of setting it master.
  -- if not awesome.startup then awful.client.setslave(c) end

  if awesome.startup and not c.size_hints.user_position and not c.size_hints.program_position then
    -- Prevent clients from being unreachable after screen count changes.
    awful.placement.no_offscreen(c)
  end
end)

-- Add a titlebar if titlebars_enabled is set to true in the rules.
client.connect_signal("request::titlebars", function(c)
  -- buttons for the titlebar
  local buttons = gears.table.join(
    awful.button({}, 1, function()
      c:emit_signal("request::activate", "titlebar", { raise = true })
      awful.mouse.client.move(c)
    end),
    awful.button({}, 3, function()
      c:emit_signal("request::activate", "titlebar", { raise = true })
      awful.mouse.client.resize(c)
    end)
  )

  awful.titlebar(c):setup {
    { -- Left
      awful.titlebar.widget.iconwidget(c),
      buttons = buttons,
      layout = wibox.layout.fixed.horizontal,
    },

    { -- Middle
      { -- Title
        align = "center",
        widget = awful.titlebar.widget.titlewidget(c),
      },
      buttons = buttons,
      layout = wibox.layout.flex.horizontal,
    },

    { -- Right
      awful.titlebar.widget.floatingbutton(c),
      awful.titlebar.widget.maximizedbutton(c),
      awful.titlebar.widget.stickybutton(c),
      awful.titlebar.widget.ontopbutton(c),
      awful.titlebar.widget.closebutton(c),
      layout = wibox.layout.fixed.horizontal(),
    },

    layout = wibox.layout.align.horizontal,
  }
end)

-- Enable sloppy focus, so that focus follows mouse.
client.connect_signal("mouse::enter", function(c)
  c:emit_signal("request::activate", "mouse_enter", { raise = false })
end)

client.connect_signal("focus", function(c)
  c.border_color = beautiful.border_focus
end)
client.connect_signal("unfocus", function(c)
  c.border_color = beautiful.border_normal
end)
-- }}}

--- {{{ Show low battery notifications.
gears.timer {
  timeout = 60,
  call_now = true,
  autostart = true,
  callback = function()
    awful.spawn.easy_async([[cat /sys/class/power_supply/BAT0/capacity]], function(stdout0)
      battery_capacity = tonumber(stdout0)

      awful.spawn.easy_async([[cat /sys/class/power_supply/BAT0/status]], function(stdout1)
        battery_status = stdout1:sub(1, -2)
      end)

      if battery_status == "Discharging" then
        if battery_capacity <= 15 then
          battery_notify = naughty.notify {
            title = "Battery warning\n",
            text = "Battery is lower than 15%.\n" .. battery_status .. " at " .. battery_capacity .. "%.",
            timeout = 3,
          }
        end
      end
    end)
  end,
}
-- }}}

-- {{{ No DPMS for fullscreen clients
local fullscreened_clients = {}

local function remove_client(tabl, c)
  local index = awful.util.table.hasitem(tabl, c)
  if index then
    table.remove(tabl, index)
    if #tabl == 0 then
      awful.util.spawn "xset s on"
      awful.util.spawn "xset +dpms"
    end
  end
end

client.connect_signal("property::fullscreen", function(c)
  if c.fullscreen then
    table.insert(fullscreened_clients, c)
    if #fullscreened_clients == 1 then
      awful.util.spawn "xset s off"
      awful.util.spawn "xset -dpms"
    end
  else
    remove_client(fullscreened_clients, c)
  end
end)

client.connect_signal("unmanage", function(c)
  if c.fullscreen then
    remove_client(fullscreened_clients, c)
  end
end)
-- }}}