Awesome WM 4 configuration

rc.lua

-- Standard awesome library
local gears = require("gears")
local awful = require("awful")
local vicious = require("vicious")
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


-- {{{ 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 = err })
		in_error = false
	end)
end
-- }}}

-- {{{ Variable definitions
-- Themes define colours, icons, and wallpapers
beautiful.init(awful.util.getdir('config') .. "themes/default/theme.lua")

-- This is used later as the default terminal and editor to run.
terminal = "terminator"
editor = os.getenv("EDITOR") or "vim"
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.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.floating,
	awful.layout.suit.corner.nw
}
-- }}}

-- {{{ 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 laucher widget and a main menu
mymenu = awful.menu({
	items = {
		{"hotkeys", function() return false, hotkeys_popup.show_help end},
  	{"terminal", terminal},
		{"restart", awesome.restart},
		{"quit", function() awesome.quit() end}
	}
})

mylauncher = awful.widget.launcher({image = beautiful.awesome_icon, menu = mymenu})

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

-- {{{ Wibox
-- Create a textclock widget
mytextclock = wibox.widget.textclock(" %H:%M @ %Y-%m-%d ")

-- 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_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 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", screen = s})

  -- Add widgets to the wibox
  s.mywibox:setup {
      layout = wibox.layout.align.horizontal,
      { -- Left widgets
          layout = wibox.layout.fixed.horizontal,
          mylauncher,
          s.mytaglist,
          s.mypromptbox,
      },
      s.mytasklist, -- Middle widget
      { -- Right widgets
          layout = wibox.layout.fixed.horizontal,
          --mykeyboardlayout,
          wibox.widget.systray(),
          --batterywidget,
          --volumewidget,
          --cpubar,
          --memwidget,
          mytextclock,
          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({}, "#107",
						function ()
							awful.util.spawn("scrot '" .. awful.util.getdir('config') .. "../../tmp/%Y-%m-%d-%H-%m-%S.png'")
  					end,
						{description = "make screenshot", group = "client"}),

  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, "Control" }, "j",
            function() awful.screen.focus_relative(1) end,
            {description = "focus the next screen", group = "screen"}),
  awful.key({ modkey, "Control" }, "k",
            function() awful.screen.focus_relative(-1) end,
            {description = "focus the previous 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
                client.focus = c
                c:raise()
              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}, "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 prompt", group = "awesome"}),
	-- Menubar
	awful.key({modkey}, "p",
						function()
							menubar.show()
						end,
						{description = "show the menubar", group = "launcher"})
)

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, "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",
    				awful.client.movetoscreen,
    				{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 = "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
	  awful.key({modkey}, "#" .. i + 9,
	    				function()
		    				local screen = mouse.screen
		    				local tag = awful.tag.gettags(screen)[i]
		    				if tag then
			    				awful.tag.viewonly(tag)
		    				end
	    				end,
	    				{description = "view tag #"..i, group = "tag"}),
	  -- Toggle tag display
	  awful.key({modkey, "Control"}, "#" .. i + 9,
	    				function ()
		    				local screen = mouse.screen
		    				local tag = awful.tag.gettags(screen)[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 = awful.tag.gettags(client.focus.screen)[i]
			    				if tag then
				    				awful.client.movetotag(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.gettags(client.focus.screen)[i]
			    				if tag then
				    				awful.client.toggletag(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
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,
		  keys = clientkeys,
		  buttons = clientbuttons,
		  raise = true,
		  screen = awful.screen.preferred,
		  placement = awful.placement.no_overlap+awful.placement.no_offscreen
	  }
  },
  {
    rule_any = {type = { "normal", "dialog" }},
    properties = {titlebars_enabled = false}
	},
}
-- }}}


-- {{{ 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):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)
-- }}}

function run_once(prg,arg_string,pname,screen)
	if not prg then
  	do return nil end
  end
  if not pname then
  	pname = prg
  end
  if not arg_string then
    awful.util.spawn_with_shell("pgrep -f -u $USER -x '" .. pname .. "' || (" .. prg .. ")", screen)
  else
    awful.util.spawn_with_shell("pgrep -f -u $USER -x '" .. pname .. " ".. arg_string .."' || (" .. prg .. " " .. arg_string .. ")", screen)
  end
end