path: root/awesome/.config/awesome/rc.lua

-- Standard awesome library
local gears = require"gears"
local awful = require"awful"
require"awful.autofocus"
-- Widget and layout library
local wibox = require"wibox"
-- Menu library
local freedesktop = require"freedesktop"
-- 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
-- System data library
local vicious = require"vicious"
vicious.contrib = require"vicious.contrib"

-- {{{ 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"~/.config/awesome/themes/gruvbox/theme.lua"

-- This is used later as the default terminal and editor to run.
terminal = "x-terminal-emulator -e dvtm"
editor = "gvim"
-- And some additional applications
root_terminal = "x-terminal-emulator -e sudo -i dvtm"
ranger = "x-terminal-emulator -e ranger"
ipython = "x-terminal-emulator -e ipython"
python3 = "x-terminal-emulator -e python3"
guile = "x-terminal-emulator -e guile"
mutt = "x-terminal-emulator -e mutt"
slock_suspend = "slock systemctl --ignore-inhibitors suspend"

scrot = "scrot /home/cnx/Desktop/%FT%T.png"
scrot_delay = "scrot --delay 3 /home/cnx/Desktop/%FT%T.png"
scrot_select = "scrot --select /home/cnx/Desktop/%FT%T.png"
function power_preferences() awful.spawn"mate-power-preferences" end
function power_statistics() awful.spawn"mate-power-statistics" end
function volume_lower() awful.spawn"amixer sset Master 5%-" end
function volume_raise() awful.spawn"amixer sset Master 5%+" end
function volume_mute() awful.spawn"amixer sset Master toggle" end
function cmus() awful.spawn"x-terminal-emulator -e cmus" end
function cmus_pause() awful.spawn"cmus-remote --pause" end
function cmus_repeat1() awful.spawn"cmus-remote -C 'toggle repeat_current'" end
function cmus_prev() awful.spawn"cmus-remote --prev" end
function cmus_next() awful.spawn"cmus-remote --next" end

-- 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.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
  awful.layout.suit.floating,
}
-- }}}

-- {{{ 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
-- }}}

-- {{{ 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 .. " " .. awesome.conffile},
  {"restart", awesome.restart},
  {"quit", function() awesome.quit() end}
}

mymainmenu = freedesktop.menu.build{
  before = {{"Awesome", myawesomemenu, beautiful.awesome_icon}},
  after = {{"Open terminal", terminal}}
}

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

-- Menubar configuration
-- Set geometry so it would overlay the wibox
menubar.geometry = {y = 0, height = 22}
-- Set the terminal for applications that require it
menubar.utils.terminal = terminal
-- }}}

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

-- {{{ Wibar
-- Create a textclock widget
mytextclock = wibox.widget.textclock" #%u %FT%R"

-- Create a CPU usage widget
mycpuusage = wibox.widget.textbox()
vicious.register(mycpuusage, vicious.widgets.cpu,
                 function(widget, args)
                   return (" CPU%03d%%"):format(args[1])
                 end, 3)

-- Create memory usage widgets
mymemusage = wibox.widget.textbox()
vicious.register(mymemusage, vicious.widgets.mem,
                 function(widget, args)
                   return (" MEM%03d%%"):format(args[1])
                 end, 2)

-- Create a battery widget
mybattery_text = wibox.widget.textbox()
vicious.register(mybattery_text, vicious.widgets.bat,
                 function(widget, args)
                   return (" %s%03d%%"):format(args[1], args[2])
                 end, 5, "BAT0")
mybattery = wibox.container.background(mybattery_text, "#98971a")
mybattery:buttons(awful.util.table.join(
  awful.button({}, 1, power_statistics),
  awful.button({}, 3, power_preferences)
))

-- Create a volume widget
myvolume_text = wibox.widget.textbox()
vicious.register(myvolume_text, vicious.widgets.volume,
                 function(widget, args)
                   return (" %s%03d%%"):format(args[2], args[1])
                 end, 1, "Master")
myvolume = wibox.container.background(myvolume_text, "#689d6a")
myvolume:buttons(awful.util.table.join(
  awful.button({}, 1, volume_lower),
  awful.button({}, 2, volume_mute),
  awful.button({}, 3, volume_raise),
  awful.button({}, 4, volume_raise),
  awful.button({}, 5, volume_lower)
))

-- Create a weather widget
myweather = wibox.widget.textbox()
vicious.register(myweather, vicious.widgets.weather,
                 function(widget, args)
                   if args["{city}"] ~= "N/A" then
                     return (" %s°C %s%%"):format(args["{tempc}"],
                                                  args["{humid}"])
                   else
                     return ""
                   end
                 end, 60, "VVNB")

-- Create cmus widget
mycmus_text = wibox.widget.textbox()
vicious.register(
  mycmus_text,
  vicious.contrib.cmus,
  function(widget, args)
    return (args["{artist}"] ~= "N/A" and " " .. args["{artist}"] or "")
           .. (args["{status}"] == "playing" and " > " or " | ")
           .. (args["{title}"] ~= "N/A" and args["{title}"] or "")
  end,
  1
)
mycmus = wibox.container.background(mycmus_text, "#b16286")
mycmus:buttons(awful.util.table.join(
  awful.button({}, 1, cmus_pause),
  awful.button({}, 2, cmus_repeat1),
  awful.button({}, 3, cmus),
  awful.button({}, 4, cmus_next),
  awful.button({}, 5, cmus_prev)
))

-- Create a wibox for each screen and add it
local taglist_buttons = awful.util.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 = awful.util.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_bg(s) awful.spawn"hsetroot -solid '#fbf1c7'" end
-- Re-set background color when a screen's geometry changes
screen.connect_signal("property::geometry", set_bg)

awful.screen.connect_for_each_screen(function(s)
  -- Background color
  set_bg(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{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(awful.util.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(s, awful.widget.taglist.filter.all,
                                     taglist_buttons)

  -- 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", height = "22", screen = s}

  -- Add widgets to the wibox
  s.mywibox:setup {
    layout = wibox.layout.align.horizontal,
    { -- Left widgets
      layout = wibox.layout.fixed.horizontal,
      -- mylauncher,
      wibox.container.background(mytextclock, "#cc241d"),
      wibox.widget.imagebox(beautiful.arrow0),
      wibox.container.background(mycpuusage, "#d65d0e"),
      wibox.widget.imagebox(beautiful.arrow1),
      wibox.container.background(mymemusage, "#d79921"),
      wibox.widget.imagebox(beautiful.arrow2),
      mybattery,
      wibox.widget.imagebox(beautiful.arrow3),
      myvolume,
      wibox.widget.imagebox(beautiful.arrow4),
      wibox.container.background(myweather, "#458588"),
      wibox.widget.imagebox(beautiful.arrow5),
      mycmus,
      wibox.widget.imagebox(beautiful.arrow6),
      s.mypromptbox
    },
    { -- Middle widget
      layout = wibox.layout.fixed.horizontal,
    },
    -- s.mytasklist,
    { -- Right widgets
      layout = wibox.layout.fixed.horizontal,
      -- mykeyboardlayout,
      wibox.widget.systray(),
      s.mytaglist,
      s.mylayoutbox
    }
  }
end)
-- }}}

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

-- {{{ Key bindings
globalkeys = awful.util.table.join(
  awful.key({modkey, "Control"}, "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 next by index", group = "client"}),
  awful.key({modkey}, "k", function() awful.client.focus.byidx(-1) end,
            {description = "focus previous by index", 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 next client by index", group = "client"}),
  awful.key({modkey, "Shift"}, "k", function() awful.client.swap.byidx(-1)end,
            {description = "swap with previous client by index",
             group = "client"}),
  awful.key({modkey}, "0",
            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}, "x", function() awful.spawn(terminal) end,
            {description = "open a terminal", group = "launcher"}),
  awful.key({modkey, "Shift"}, "x", function() awful.spawn(root_terminal) end,
            {description = "open a root terminal", group = "launcher"}),
  awful.key({modkey}, "v", function() awful.spawn(editor) end,
            {description = "open GVim", group = "launcher"}),
  awful.key({modkey}, "e", function() awful.spawn("emacs") end,
            {description = "open Emacs", group = "launcher"}),
  awful.key({modkey}, "b", function() awful.spawn"luakit" end,
            {description = "open Luakit", group = "launcher"}),
  awful.key({modkey, "Shift"}, "b",
            function() awful.spawn"torbrowser-launcher" end,
            {description = "open Tor Browser", group = "launcher"}),
  awful.key({modkey}, "r", function() awful.spawn(ranger) end,
            {description = "open ranger file manager", group = "launcher"}),
  awful.key({modkey}, "p", function() awful.spawn(python3) end,
            {description = "open Python 3 interpreter", group = "launcher"}),
  awful.key({modkey, "Shift"}, "p", function() awful.spawn(ipython) end,
            {description = "open Interactive Python 2", group = "launcher"}),
  awful.key({modkey}, "g", function() awful.spawn(guile) end,
            {description = "open Guile interpreter", group = "launcher"}),
  awful.key({modkey}, "z", function() awful.spawn"zathura" end,
            {description = "open zathura document viewer", group = "launcher"}),
  awful.key({modkey}, "m", function() awful.spawn(mutt) end,
            {description = "open mutt mail client", group = "launcher"}),
  awful.key({modkey}, "y", function() awful.spawn"diodon" end,
            {description = "open clipboard manager", group = "launcher"}),
  awful.key({modkey}, "s", function() awful.spawn"slock" end,
            {description = "lock screen", group = "launcher"}),
  awful.key({modkey, "Shift"}, "s", function() awful.spawn(slock_suspend) end,
            {description = "lock screen then suspend", group = "launcher"}),
  awful.key({modkey}, "c", cmus,
            {description = "open cmus music player", group = "launcher"}),

  awful.key({modkey}, "XF86AudioPlay", cmus_pause,
            {description = "cmus: play/pause", group = "multimedia"}),
  awful.key({modkey}, "XF86AudioPrev", cmus_prev,
            {description = "cmus: previous track", group = "multimedia"}),
  awful.key({modkey}, "XF86AudioNext", cmus_next,
            {description = "cmus: next track", group = "multimedia"}),
  awful.key({}, "Print", function() awful.spawn(scrot) end,
            {description = "capture a screenshot", group = "multimedia"}),
  awful.key({"Shift"}, "Print", function() awful.spawn(scrot_delay) end,
            {description = "wait 3 seconds then capture a screenshot",
             group = "multimedia"}),
  awful.key({"Control"}, "Print", function() awful.spawn(scrot_select) end,
            {description = "shoot a window or rectangle selected with a mouse",
             group = "multimedia"}),
  awful.key({}, "XF86AudioRaiseVolume", volume_raise,
            {description = "raise 5% volume", group = "multimedia"}),
  awful.key({}, "XF86AudioLowerVolume", volume_lower,
            {description = "lower 5% volume", group = "multimedia"}),
  awful.key({}, "XF86AudioMute", volume_mute,
            {description = "(un)mute volume", group = "multimedia"}),

  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}, "Return", function() awful.layout.inc(-1) end,
            {description = "select next", group = "layout"}),
  awful.key({modkey, "Shift"}, "Return", 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
                client.focus = c
                c:raise()
              end
            end,
            {description = "restore minimized", group = "client"}),

  -- Prompt
  awful.key({modkey}, ";",
            function() awful.screen.focused().mypromptbox:run() end,
            {description = "run prompt", group = "launcher"}),
  -- Menubar
  awful.key({modkey, "Shift"}, ";", function() menubar.show() end,
            {description = "show the menubar", group = "launcher"})

  -- I don't know any Lua.
  -- 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"}),
)

clientkeys = awful.util.table.join(
  awful.key({modkey}, "f",
            function(c)
              c.fullscreen = not c.fullscreen
              c:raise()
            end,
            {description = "toggle fullscreen", group = "client"}),
  awful.key({modkey}, "q", function(c) c:kill() end,
            {description = "close", group = "client"}),
  awful.key({modkey, "Control"}, "q", function() awful.spawn"xkill" end,
            {description = "select a window to be killed", group = "client"}),
  awful.key({modkey, "Control"}, "Return", awful.client.floating.toggle,
            {description = "toggle floating", group = "client"}),
  awful.key({modkey, "Control"}, "space",
            function(c) c:swap(awful.client.getmaster()) end,
            {description = "move to master", group = "client"}),
  awful.key({modkey, "Shift"}, "0", 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, "Control"}, "m",
            function(c)
              c.maximized = not c.maximized
              c:raise()
            end,
            {description = "maximize", group = "client"})
)

-- Bind all key numbers to tags.
-- Be careful: we use keycodes to make it works on any keyboard layout.
-- This should map on the top row of your keyboard, usually 1 to 9.
for i = 1, 9 do
    globalkeys = awful.util.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"}),
      -- 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 = awful.util.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,
     size_hints_honor = false
   }},

  -- Floating clients.
  {rule_any = {
    instance = {
      "DTA",  -- Firefox addon DownThemAll.
      "copyq",  -- Includes session name in class.
    },
    class = {
      "Arandr",
      "Gpick",
      "Gcolor2",
      "Kruler",
      "MessageWin",  -- kalarm.
      "Sxiv",
      "Torbrowser-launcher",
      "Twf",
      "Wpa_gui",
      "ac_client",
      "flare",
      "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}},

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

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

-- {{{ 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 = awful.util.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, {size=22}) : setup {
      { -- Left
        awful.titlebar.widget.closebutton(c),
        awful.titlebar.widget.ontopbutton(c),
        awful.titlebar.widget.stickybutton(c),
        awful.titlebar.widget.maximizedbutton(c),
        awful.titlebar.widget.floatingbutton(c),
        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.iconwidget(c),
        buttons = buttons,
        layout = wibox.layout.fixed.horizontal
      },
      layout = wibox.layout.align.horizontal
    }

    -- Show titlebar if client is floating, hide otherwise.
    if not c.floating and
       awful.screen.focused().selected_tag.layout ~=
       awful.layout.suit.floating then
      awful.titlebar.hide(c)
    end
  end
)

-- Show titlebar if client is floating, hide otherwise.
client.connect_signal(
  "property::floating",
  function(c)
    if c.first_tag == nil then
      end
    if c.floating or
       (c.first_tag ~= nil and
        c.first_tag.layout == awful.layout.suit.floating) then
      awful.titlebar.show(c)
    else
      awful.titlebar.hide(c)
    end
  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)

-- Show titlebar if client is floating, hide otherwise.
tag.connect_signal(
  "property::layout",
  function(t)
    if t.layout == awful.layout.suit.floating then
      for _, c in pairs(t:clients()) do awful.titlebar.show(c) end
    else
      for _, c in pairs(t:clients()) do
        if not c.floating then awful.titlebar.hide(c) end
      end
    end
  end
)
-- }}}