vincentbernat.i3wm-configuration/rc/widgets.lua

-- Widgets

require("vicious")
local icons = loadrc("icons", "vbe/icons")

-- Separators
local sepopen = widget({ type = "imagebox" })
sepopen.image = image(awful.util.getdir("config") .. "/icons/widgets/left.png")
local sepclose = widget({ type = "imagebox" })
sepclose.image = image(awful.util.getdir("config") .. "/icons/widgets/right.png")
local spacer = widget({ type = "imagebox" })
spacer.image = image(awful.util.getdir("config") .. "/icons/widgets/spacer.png")

-- Date
local datewidget = widget({ type = "textbox" })
vicious.register(datewidget, vicious.widgets.date,
		 '<span color="' .. beautiful.fg_widget_clock .. '">%a %d/%m, %H:%M</span>', 61)
local dateicon = widget({ type = "imagebox" })
dateicon.image = image(awful.util.getdir("config") .. "/icons/widgets/clock.png")

-- CPU usage
local cpuwidget = widget({ type = "textbox" })
vicious.register(cpuwidget, vicious.widgets.cpu,
		 function (widget, args)
		    return string.format('<span color="' .. beautiful.fg_widget_value .. '">%2d%%</span>',
					 args[1])
		 end, 2)
local cpuicon = widget({ type = "imagebox" })
cpuicon.image = image(awful.util.getdir("config") .. "/icons/widgets/cpu.png")

-- Battery
local batwidget = { widget = "" }
if config.hostname == "guybrush" then
   batwidget.widget = widget({ type = "textbox" })
   vicious.register(batwidget.widget, vicious.widgets.bat,
		    function (widget, args)
		       local color = beautiful.fg_widget_value
		       local current = args[2]
		       if current < 10 and args[1] == "-" then
			  color = beautiful.fg_widget_value_important
			  -- Maybe we want to display a small warning?
			  if current ~= batwidget.lastwarn then
			     batwidget.lastid = naughty.notify(
				{ title = "Battery low!",
				  preset = naughty.config.presets.critical,
				  timeout = 20,
				  text = "Battery level is currently " ..
				     current .. "%.\n" .. args[3] ..
				     " left before running out of power.",
				  icon = icons.lookup({name = "battery-caution",
						       type = "status"}),
				  replaces_id = batwidget.lastid }).id
			     batwidget.lastwarn = current
			  end
		       end
		       return string.format(
			  '<span color="' .. beautiful.fg_widget_label ..
			     '">Bat: </span>' ..
			     '<span color="' .. color ..
			     '">%s %d%%</span>', args[1], current)
		    end,
		    61, "BAT1")
end
local baticon = widget({ type = "imagebox" })
baticon.image = image(awful.util.getdir("config") .. "/icons/widgets/bat.png")

-- Network
local netup   = widget({ type = "textbox" })
local netdown = widget({ type = "textbox" })
local netupicon = widget({ type = "imagebox" })
netupicon.image = image(awful.util.getdir("config") .. "/icons/widgets/up.png")
local netdownicon = widget({ type = "imagebox" })
netdownicon.image = image(awful.util.getdir("config") .. "/icons/widgets/down.png")

local netgraph = awful.widget.graph()
netgraph:set_width(80):set_height(16)
netgraph:set_stack(true):set_scale(true)
netgraph:set_border_color(beautiful.fg_widget_border)
netgraph:set_stack_colors({ "#EF8171", "#cfefb3" })
netgraph:set_background_color("#00000033")
vicious.register(netup, vicious.widgets.net,
    function (widget, args)
       -- We sum up/down value for all interfaces
       local up = 0
       local down = 0
       local iface
       for name, value in pairs(args) do
	  iface = name:match("^{(%S+) down_b}$")
	  if iface and iface ~= "lo" then down = down + value end
	  iface = name:match("^{(%S+) up_b}$")
	  if iface and iface ~= "lo" then up = up + value end
       end
       -- Update the graph
       netgraph:add_value(up, 1)
       netgraph:add_value(down, 2)
       -- Format the string representation
       local format = function(val)
	  if val > 500000 then
	     return string.format("%.1f MB", val/1000000.)
	  elseif val > 500 then
	     return string.format("%.1f KB", val/1000.)
	  end
	  return string.format("%d B", val)
       end
       -- Down
       netdown.text = string.format('<span color="' .. beautiful.fg_widget_value ..
				    '">%08s</span>', format(down))
       -- Up
       return string.format('<span color="' .. beautiful.fg_widget_value ..
			    '">%08s</span>', format(up))
    end, 3)

-- Memory usage
local memwidget = widget({ type = "textbox" })
vicious.register(memwidget, vicious.widgets.mem,
		 '<span color="' .. beautiful.fg_widget_value .. '">$1%</span>',
		 13)
local memicon = widget({ type = "imagebox" })
memicon.image = image(awful.util.getdir("config") .. "/icons/widgets/mem.png")

-- Volume level
local volicon = widget({ type = "imagebox" })
volicon.image = image(awful.util.getdir("config") .. "/icons/widgets/vol.png")
local volwidget = widget({ type = "textbox" })
vicious.register(volwidget, vicious.widgets.volume,
		 '<span color="' .. beautiful.fg_widget_value .. '">$2 $1%</span>',
		2, "Master")
volume = loadrc("volume", "vbe/volume")
volwidget:buttons(awful.util.table.join(
		     awful.button({ }, 1, volume.mixer),
		     awful.button({ }, 3, volume.toggle),
		     awful.button({ }, 4, volume.increase),
		     awful.button({ }, 5, volume.decrease)))

-- File systems
local fs = { ["/"] = "root",
	     ["/home"] = "home",
	     ["/var"] = "var",
	     ["/usr"] = "usr",
	     ["/tmp"] = "tmp",
	     ["/var/cache/build"] = "pbuilder" }
local fsicon = widget({ type = "imagebox" })
fsicon.image = image(awful.util.getdir("config") .. "/icons/widgets/disk.png")
local fswidget = widget({ type = "textbox" })
vicious.register(fswidget, vicious.widgets.fs,
		 function (widget, args)
		    local result = ""
		    for path, name in pairs(fs) do
		       local used = args["{" .. path .. " used_p}"]
		       local color = beautiful.fg_widget_value
		       if used then
			  if used > 90 then
			     color = beautiful.fg_widget_value_important
			  end
			  result = string.format(
			     '%s%s<span color="' .. beautiful.fg_widget_label .. '">%s: </span>' ..
				'<span color="' .. color .. '">%2d%%</span>',
			     result, #result > 0 and " " or "", name, used)
		       end
		    end
		    return result
		 end, 10)

local systray = widget({ type = "systray" })

-- Wibox initialisation
local wibox     = {}
local promptbox = {}
local layoutbox = {}

local taglist = {}
local tasklist = {}
tasklist.buttons = awful.util.table.join(
   awful.button({ }, 1, function (c)
		   if c == client.focus then
		      c.minimized = true
		   else
		      if not c:isvisible() then
			 awful.tag.viewonly(c:tags()[1])
		      end
		      -- This will also un-minimize
		      -- the client, if needed
		      client.focus = c
		      c:raise()
		   end
			end))

for s = 1, screen.count() do
    promptbox[s] = awful.widget.prompt({ layout = awful.widget.layout.horizontal.leftright })
    layoutbox[s] = awful.widget.layoutbox(s)
    tasklist[s]  = awful.widget.tasklist(
       function(c)
	  local fn = awful.widget.tasklist.label.currenttags
	  if screen.count() == 1 then
	     fn = awful.widget.tasklist.label.alltags
	  end
	  local title, color, _, icon = fn(c, s)
	  if screen.count() > 1 then
	     -- title, color and icon
	     return title, color, nil, icon
	  elseif icon then
	     -- just color and icon
	     return "", color, nil, icon
	  end
       end, tasklist.buttons)

    -- Create the taglist
    taglist[s]   = sharetags.taglist(s, sharetags.label.all)
    -- Create the wibox
    wibox[s] = awful.wibox({ screen = s,
			     fg = beautiful.fg_normal,
			     bg = beautiful.bg_widget,
			     position = "top",
			     height = 16,
    })
    -- Add widgets to the wibox
    local on = function(n, what)
       if s == n or n > screen.count() then return what end
       return ""
    end

    wibox[s].widgets = {
        {
	   sepopen,
	   taglist[s],
	   spacer,
	   layoutbox[s], sepclose,
	   promptbox[s],
	   layout = awful.widget.layout.horizontal.leftright
	},
	on(1, systray),
	sepclose, datewidget, dateicon, spacer,
	on(2, volwidget), on(2, volicon), on(2, spacer),
	on(2, batwidget.widget), on(2, batwidget.widget ~= "" and baticon or ""), on(2, batwidget.widget ~= "" and spacer or ""),
	on(2, fswidget), on(2, fsicon), on(2, sepopen),
	on(1, netgraph.widget), on(1, netdownicon), on(1, netdown), on(1, netupicon), on(1, netup), on(1, spacer),
	on(1, memwidget), on(1, memicon), on(1, spacer),
	on(1, cpuwidget), on(1, cpuicon), on(1, sepopen),
	tasklist[s],
	layout = awful.widget.layout.horizontal.rightleft }
end

config.keys.global = awful.util.table.join(
   config.keys.global,
   awful.key({ modkey }, "r", function () promptbox[mouse.screen]:run() end,
	     "Prompt for a command"))