rc.lua

-- Standard awesome library
local gears = require("gears")
local awful = require("awful")
local remote = require("awful.remote")
require("awful.autofocus")
-- Widget and layout library
local wibox = require("wibox")
-- Theme handling library
local beautiful = require("beautiful")
-- Notification library
local naughty = require("naughty")
local menubar = require("menubar")
local hotkeys_popup = require("awful.hotkeys_popup").widget
-- Enable VIM help for hotkeys widget when client with matching name is opened:
require("awful.hotkeys_popup.keys.vim")

-- {{{ 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(awful.util.get_configuration_dir() .. "/themes/own/theme.lua")
beautiful.font = "DejaVu Sans Mono Book"

-- This is used later as the default terminal and editor to run.
terminal = "alacritty"
terminal_cmd = terminal .. " -e tmux new-session -t work -f active-pane"
lockscreen = "xtrlock"
editor = os.getenv("EDITOR") or "vi"
editor_cmd = terminal .. " -e " .. editor
volume = "amixer sset 'Master'"
volume_amount = "1%"
volume_up = volume .. " " .. volume_amount .. "+"
volume_down = volume .. " " .. volume_amount .. "-"

-- 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.fair,
    awful.layout.suit.fair.horizontal,
    awful.layout.suit.floating,
    -- awful.layout.suit.tile,
    -- 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,
    -- 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,
}
-- }}}

-- {{{ Helper functions
local function client_menu_toggle_fn()
    local instance = nil

    return function ()
        if instance and instance.wibox.visible then
            instance:hide()
            instance = nil
        else
            instance = awful.menu.clients({ theme = { width = 250 } })
        end
    end
end

local function prevtag(s)
	local tag = s.selected_tag
	local target = awful.tag.find_by_name(s, tostring((tonumber(tag.name) + 9) % 10))
	if not target then
		target = awful.tag.find_by_name(s, tostring((tonumber(tag.name) + 8) % 10))
	end
	return target
end

local function nexttag(s)
	local tag = s.selected_tag
	local target = awful.tag.find_by_name(s, tostring((tonumber(tag.name) + 1) % 10))
	if not target then
		target = awful.tag.find_by_name(s, tostring((tonumber(tag.name) + 2) % 10))
	end
	return target
end
-- }}}

-- {{{ Menu
-- Create a launcher widget and a main menu
myawesomemenu = {
   { "hotkeys", function() return false, hotkeys_popup.show_help 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_cmd }
                                  }
                        })

-- 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("%a %Y-%m-%d %H:%M:%S",0.5)

-- 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),
                    -- TODO: maybe middle click to move the tag to the other screen?
                    -- awful.button({ }, 2, function(t) 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
                                                  -- Without this, the following
                                                  -- :isvisible() makes no sense
                                                  c.minimized = false
                                                  if not c:isvisible() and c.first_tag then
                                                      c.first_tag:view_only()
                                                  end
                                                  -- This will also un-minimize
                                                  -- the client, if needed
                                                  client.focus = c
                                                  c:raise()
                                              end
                                          end),
                     awful.button({ }, 3, client_menu_toggle_fn()),
                     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)

	if s == screen.primary then
		awful.tag({ "1", "2", "3", "4", "5", "6", "7", "8", "9" }, s, awful.layout.layouts[1])
	else
		awful.tag({ "0" }, s, awful.layout.layouts[1])
	end

    -- Create a promptbox for each screen
    s.mypromptbox = awful.widget.prompt()
    -- Create an imagebox widget which will contains 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,
			buttons = taglist_buttons,
			filter  = awful.widget.taglist.filter.all,
			source = function(s)
					tags = s.tags
					table.sort(tags, function(a, b) return a.name < b.name end)
					return tags
				end,
		}

    -- Create a tasklist widget
    s.mytasklist = awful.widget.tasklist(s, awful.widget.tasklist.filter.currenttags, tasklist_buttons)

    -- Create the wibox
    s.mywibox = awful.wibar({ position = "top", screen = s, height = 20, })

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

-- {{{ Mouse bindings
root.buttons(gears.table.join(
    awful.button({ }, 3, function () mymainmenu:toggle() end),
    awful.button({ }, 4, function()
			local primary = screen.primary
			local s = mouse.screen
			if not s == primary then return end
			local tag = prevtag(s)
			if tag then
				tag:view_only()
			end
		end),
    awful.button({ }, 5, function()
			local primary = screen.primary
			local s = mouse.screen
			if not s == primary then return end
			local tag = nexttag(s)
			if tag then
				tag:view_only()
			end
		end)
))
-- }}}

-- {{{ Key bindings
globalkeys = gears.table.join(
    awful.key({ modkey,           }, "s",      hotkeys_popup.show_help,
              {description="show help", group="awesome"}),
    awful.key({ modkey,           }, "Left", function()
			local primary = screen.primary
			local s = mouse.screen
			if not s == primary then return end
			local tag = prevtag(s)
			if tag then
				tag:view_only()
			end
		end,
		{description = "view previous", group = "tag"}),
    awful.key({ modkey,           }, "Right", function()
			local primary = screen.primary
			local s = mouse.screen
			if not s == primary then return end
			local tag = nexttag(s)
			if tag then
				tag:view_only()
			end
		end,
		{description = "view next", group = "tag"}),

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

    -- Layout manipulation
    awful.key({ modkey,           }, "a", awful.client.urgent.jumpto,
              {description = "jump to urgent client", group = "client"}),

    -- Standard program
    awful.key({ modkey,           }, "l", function () awful.spawn(lockscreen) end,
              {description = "lock the screen", group = "client"}),
    awful.key({ modkey,           }, "Return", function () awful.spawn(terminal_cmd) end,
              {description = "open a terminal", group = "launcher"}),
    awful.key({ modkey, "Shift",  }, "r", awesome.restart,
              {description = "reload awesome", group = "awesome"}),
    awful.key({ modkey, "Shift"   }, "q", awesome.quit,
              {description = "quit awesome", group = "awesome"}),

    -- Volume
    awful.key({ modkey,           }, "Up", function () awful.spawn(volume_up) end,
              {description = "volume up", group = "launcher"}),
    awful.key({ modkey,           }, "Down", function () awful.spawn(volume_down) end,
              {description = "volume down", group = "launcher"}),
    -- Layout
    awful.key({ modkey, "Shift"   }, "t", function () awful.spawn("setxkbmap us") end,
              {description = "keyboard layout us", group = "desktop"}),
    awful.key({ modkey, "Shift"   }, "l", function () awful.spawn("setxkbmap de neo") end,
              {description = "keyboard layout neo", group = "desktop"}),

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

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,           }, "space",  awful.client.floating.toggle                     ,
              {description = "toggle floating", 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"}),
	-- Move client to left.
	awful.key({ modkey, "Shift" }, "Left",
		function (c)
			local index = c.first_tag.index
			local new_index = (index == 1) and (9) or (index - 1)
			local tag = c.screen.tags[new_index]
			if tag then
			    c:move_to_tag(tag)
			end
		end,
		{description = "move focused client to left", group = "client"}),
	-- Move client to right.
	awful.key({ modkey, "Shift" }, "Right",
		function (c)
			local index = c.first_tag.index
			local new_index = (index == 9) and (1) or (index + 1)
			local tag = c.screen.tags[new_index]
			if tag then
			    c:move_to_tag(tag)
			end
		end,
		{description = "move focused client to right", 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 primary = screen.primary
				local secondary = ((screen[1] == primary) and screen[2]) or screen[1]
				local s = awful.screen.focused()
				local tag = awful.tag.find_by_name(primary, tostring(i))
				if primary == s then
					if tag then
						tag:view_only()
					else
						tag = awful.tag.find_by_name(secondary, tostring(i))
						local zero = awful.tag.find_by_name(primary, "0")
						tag:swap(zero)
						tag:view_only()
						zero:view_only()
					end
				else
					if tag then
						local other = secondary.tags[1]
						local selected = primary.selected_tags
						for k, v in pairs(selected) do
							if v.name == tostring(i) then
								selected[k] = other
							end
						end
						tag:swap(other)
						tag:view_only()
						awful.tag.viewnone(primary)
						awful.tag.viewmore(selected, primary)
					end
				end
			end,
			{description = "view tag #"..i, group = "tag"}),
        -- Toggle tag display.
        awful.key({ modkey, "Control" }, "#" .. i + 9,
			function ()
				local primary = screen.primary
				local s = awful.screen.focused()
				local secondary = ((screen[1] == primary) and screen[2]) or screen[1]
				if s == primary then
					local tag = awful.tag.find_by_name(s, tostring(i))
					if tag then
						awful.tag.viewtoggle(tag)
					else
						tag = awful.tag.find_by_name(secondary, tostring(i))
						local zero = awful.tag.find_by_name(primary, "0")
						local selected = primary.selected_tags
						for k, v in pairs(selected) do
							if v.name == tostring(i) then
								selected[k] = zero
							end
						end
						table.insert(selected, tag)
						tag:swap(zero)
						zero:view_only()
						awful.tag.viewnone(primary)
						awful.tag.viewmore(selected, primary)
					end
				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 = awful.tag.find_by_name(s, tostring(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 = awful.tag.find_by_name(s, tostring(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) client.focus = c; c:raise() end),
    awful.button({ modkey }, 1, awful.mouse.client.move),
    awful.button({ modkey }, 3, awful.mouse.client.resize))

-- 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.
        },
        class = {
          "Arandr",
          "Gpick",
          "Kruler",
          "MessageWin",  -- kalarm.
          "Sxiv",
          "Wpa_gui",
          "pinentry",
          "veromix",
          "xtightvncviewer"},

        name = {
          "Event Tester",  -- xev.
        },
        role = {
          "AlarmWindow",  -- Thunderbird's calendar.
          "pop-up",       -- e.g. Google Chrome's (detached) Developer Tools.
        }
      }, properties = { floating = true }},

    { rule = { class = "qutebrowser" }, properties = { screen = 1, tag = "2" } },
    { rule = { class = "Firefox" }, properties = { screen = 1, tag = "2" } },
    { rule = { class = "Nightly" }, properties = { screen = 1, tag = "2" } },
    { rule = { class = "Mumble" }, properties = { screen = 1, tag = "5" } },
    { rule = { class = "discord" }, properties = { screen = 1, tag = "5" } },
    { rule = { class = "Pidgin" }, properties = { screen = 1, tag = "3" } },
    { rule = { class = "Gajim" }, properties = { screen = 1, tag = "3" } },
    { rule = { class = "Mattermost" }, properties = { screen = 1, tag = "3" } },
    { rule = { class = "Thunderbird" }, properties = { screen = 1, tag = "4" } },
    { rule = { class = "Earlybird" }, properties = { screen = 1, tag = "4" } },
    { rule = { class = "Music" }, properties = { screen = 1, tag = "5" } },
    { rule = { class = "Patchage" }, properties = { screen = 1, tag = "6" } },
    { rule = { class = "Google-chrome" }, properties = { screen = 1, tag = "6" } },
    { rule = { class = "Steam" }, properties = { screen = 1, tag = "9" } },
    { rule = { class = "steamwebhelper" }, properties = { screen = 1, tag = "9" } },
    { rule = { class = "upc.exe" }, properties = { screen = 1, tag = "9" } },
    { rule = { class = "Lutris" }, properties = { screen = 1, 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()
            client.focus = c
            c:raise()
            awful.mouse.client.move(c)
        end),
        awful.button({ }, 3, function()
            client.focus = c
            c:raise()
            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)
    if awful.layout.get(c.screen) ~= awful.layout.suit.magnifier
        and awful.client.focus.filter(c) then
        client.focus = c
    end
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)
-- }}}