-- Standard awesome library
require("awful")
require("awful.autofocus")
require("awful.rules")
-- Theme handling library
require("beautiful")
-- Notification library
require("naughty")

-- Load Debian menu entries
require("debian.menu")

-- functions {{{1
-- status {{{2
cardid  = 0
channel = "Master"
function volume (mode, widget)
   if mode == "update" then
       local pvol = io.popen("amixer -c " .. cardid .. " -- sget " .. channel)
       local status = pvol:read("*all")
       local volume = string.match(status, "(%d?%d?%d)%%")
       volume = string.format("% 3d", volume)
       status = string.match(status, "%[(o[^%]]*)%]")
       if string.find(status, "on", 1, true) then
       --    widget:bar_properties_set("vol", {["bg"] = "#000000"})
       else
       --    widget:bar_properties_set("vol", {["bg"] = "#333333"})
       end
       widget:bar_data_add("vol", volume)
       io.close(pvol)
   elseif mode == "up" then
       awful.util.spawn("amixer -q -c " .. cardid .. " sset " .. channel .. " 5%+")
       volume("update", widget)
   elseif mode == "down" then
       awful.util.spawn("amixer -q -c " .. cardid .. " sset " .. channel .. " 5%-")
       volume("update", widget)
   else
       awful.util.spawn("amixer -c " .. cardid .. " sset " .. channel .. " toggle")
       volume("update", widget)
   end
end

function ibmVolume()
    local curvol, mute
    fvol = io.open("/proc/acpi/ibm/volume")
    local line = fvol:read()
    while line do
        if line:match("^level:") then
            curvol = string.match(line, "%d+")
        elseif line:match("^mute:") then
            mute = string.match(line, "%w+$")
        end
        line = fvol:read()
    end
    io.close(fvol)
    if mute == 'on' then
        return 0
    else
        return curvol / 15 * 100
    end
end

function battRemaining()
    fh = io.popen("acpi -b")
    local line = fh:read()
    io.close(fh)
    local rem = string.match(line, " %d%d:%d%d")
    local perc = string.match(line, "%d+%%")
    if rem then
        return rem.."h ("..perc..")"
    end
    return "(Full)"
end 

function batteryInfo(adapter, widget)
    local fcur = io.open("/sys/class/power_supply/"..adapter.."/energy_now")
    local fcap = io.open("/sys/class/power_supply/"..adapter.."/energy_full")
    local fsta = io.open("/sys/class/power_supply/"..adapter.."/status")
    local cur = fcur:read()
    local cap = fcap:read()
    local sta = fsta:read()
    local spacer = " "
    local battery = math.floor(cur * 100 / cap)
    if sta:match("Charging") then
        dir = "+"
        battery = battery.."%"
    elseif sta:match("Discharging") then
        dir = "-"
        if tonumber(battery) < 10 then
            naughty.notify({ title      = "Battery Warning"
                           , text       = "Battery low!"..spacer..battery.."%"..spacer.."left!"
                           , timeout    = 5
                           , position   = "top_right"
                           , fg         = beautiful.fg_focus
                           , bg         = beautiful.bg_focus
                           })
        end
        battery = battery.."%"
    else
        dir = ""
        battery = "A/C"
    end
    widget.text = "  "..adapter..": "..dir..battery
    fcur:close()
    fcap:close()
    fsta:close()
end

----------------------------------------------------
-- cpu -> cpu_percent
-- user + nice + system + idle = 100/second)
-- so diffs of: $2+$3+$4 / all-together * 100 = %
-- or: 100 - ( $5 / all-together) * 100 = %
-- or: 100 - 100 * ( $5 / all-together)= %
----------------------------------------------------
cpu_old_sum = 0
cpu_old_user = 0
cpu_old_nice = 0
cpu_old_system = 0
cpu_old_iowait = 0
cpu_old_idle = 0
function cpu(cpuid)
  local line, cpu_new_sum, user, nice, system, idle, iowait, diff, fh
  local cpu_user, cpu_nice, cpu_iowait, cpu_total, cpu_system

  fh = io.open("/proc/stat")
  line = fh:read()
  while line do
    if string.match(line, cpuid) then
      -- 
      user, nice, system, idle, iowait = string.match(line, "%w+%s+(%d+)%s+(%d+)%s+(%d+)%s+(%d+)%s+(%d+)")

      cpu_new_sum = user + nice + system + idle + iowait -- all-together
      diff = cpu_new_sum - cpu_old_sum;

      if diff > 0 then -- should be always true - but on heavy load no update is possible
        cpu_user =  100 * (user - cpu_old_user) / diff;
        cpu_nice =  100 * (nice - cpu_old_nice) / diff;
        cpu_system =  100 * (system - cpu_old_system) / diff;
        cpu_iowait =  100 * (iowait - cpu_old_iowait) / diff;
        cpu_total = 100 - 100 * (idle - cpu_old_idle) / diff;
      else
        cpu_user = 100
        cpu_nice = 100
        cpu_iowait = 100
        cpu_total = 100
        cpu_system = 100
      end

      cpu_old_sum = cpu_new_sum;
      cpu_old_user = user;
      cpu_old_nice = nice;
      cpu_old_system = system;
      cpu_old_iowait = iowait;
      cpu_old_idle = idle;

      io.close(fh);
      return {cpu_user, cpu_nice, cpu_iowait, cpu_system, cpu_total}
    end
    line = fh:read()
  end
  io.close(fh);
end

----------------------------------------------------
-- DF (disk-free) bar
----------------------------------------------------
function diskfree(cmd)
  local z, line, ph, df
  df = {}
  z = 1
  ph = io.popen(cmd)
  line = ph:read() -- skip first line
  line = ph:read()
  while line do
    if string.match(line, '%%') then
        perc = string.gsub(line, "^[^%s]+%s+[^%s]+%s+[^%s]+%s+[^%s]+%s+(%w+).+$", "%1")
        perc = tonumber(perc)
        if (perc == nil or perc < 0) then
          perc = 0;
        end
        df[z] = perc;
        z = z + 1
    end
    line = ph:read()
  end
  io.close(ph);
  return df
end

----------------------------------------------------
-- memory
----------------------------------------------------
-- todo: Mem{Swap}Total would be needed only once!
function memory(proc)
  local mem_free, mem_total, swap_free, swap_total
  local mem_percent, swap_percent, line, fh, count
  local buffers, cached
  count = 0

  fh = io.open(proc)

  line = fh:read()
  while line and count < 7 do
    if line:match("^MemTotal:") then
      mem_total = string.match(line, "%d+")
      count = count + 1;
    elseif line:match("^MemFree:") then
      mem_free = string.match(line, "%d+")
      count = count + 1;
    elseif line:match("^Buffers:") then
      buffers = string.match(line, "%d+")
      count = count + 1;
    elseif line:match("^Cached:") then
      cached = string.match(line, "%d+")
      count = count + 1;
    elseif line:match("^SwapFree:") then
      swap_free = string.match(line, "%d+")
      count = count + 1;
    elseif line:match("^SwapTotal:") then
      swap_total = string.match(line, "%d+")
      count = count + 1;
    end
    line = fh:read()
  end
  io.close(fh)

--  mem_percent = 100 * (mem_free + buffers + cached) / mem_total;
  mem_percent = 100 * (mem_total - mem_free - buffers - cached) / mem_total;
  swap_percent = 100 * (swap_total - swap_free) / swap_total;

  return {mem_percent, swap_percent}
end

function temp(zone, mintemp, maxtemp)
  fh = io.open("/sys/devices/platform/thinkpad_hwmon/temp"..zone.."_input")
  line = fh:read()
  io.close(fh);
  local curtemp = tonumber(line) / 1000
  return ( tonumber(curtemp) - mintemp ) / ( maxtemp-mintemp ) * 100
end

function cpufreq(cpuid, minfreq, maxfreq)
  fh = io.open('/sys/devices/system/cpu/'..cpuid..'/cpufreq/scaling_cur_freq')
  curfreq = fh:read()
  cpufreq_perc = ( tonumber(curfreq) - minfreq ) / ( maxfreq - minfreq ) * 100
  io.close(fh);
  return cpufreq_perc
end

function ibmfan(min, max)
  local speed = 0
  fh = io.open('/proc/acpi/ibm/fan')
  line = fh:read()
  while line do
      if line:match("^speed:") then
          io.close(fh)
          speed = string.match(line, "%d+")
          --return perc(min, max, tonumber(cur))
          return ( tonumber(speed) - min ) / ( max-min ) * 100
      end
      line = fh:read()
  end
  io.close(fh)
  return 0
end

----------------------------------------------------
-- ethernet (in kb/update-interval)
----------------------------------------------------
ethernet_total_in_old = { wlan0 = 0, eth0 = 0 }
ethernet_total_out_old = { wlan0 = 0, eth0 = 0 }
function ethernet(eth)
  local tot_eth_in, tot_eth_out, tmp, fh
  local eth_in, eth_out

  fh = io.open("/proc/net/dev")
  line = fh:read()
  while line do
    if string.match(line, eth) then
      tmp = string.find (line,":") -- e.g. skip the 0 on eth0
      tot_eth_in = string.match(line, "%s*%d+", tmp) -- first decimal number are total bytes
      tot_eth_out = string.gsub(line,"^.*:%s*%d+%s+%d+%s+%d+%s+%d+%s+%d+%s+%d+%s+%d+%s+%d+%s+(%d+).*$", "%1")
      eth_in = (tot_eth_in - ethernet_total_in_old[eth]) / 1024 -- / INTERVAL
      eth_out = (tot_eth_out - ethernet_total_out_old[eth]) / 1024 -- / INTERVAL
      ethernet_total_in_old[eth] = tot_eth_in
      ethernet_total_out_old[eth] = tot_eth_out
      --tot_eth_in_old = tot_eth_in
      --tot_eth_out_old = tot_eth_out
      if eth_in < 0 then
          eth_in = 0
      end
      if eth_out < 0 then
          eth_out = 0
      end
      eth_in = string.format("%5.0f", eth_in)
      eth_out = string.format("%5.0f", eth_out)

      io.close(fh);
      return {eth_in, eth_out}
    end
    line = fh:read()
  end
  io.close(fh);
  return {"n/a", ""}
end

-- utility {{{2

function perc(min, max, cur)
  return ( cur - min ) / ( max - min ) * 100
end

--- Spawns cmd if no client can be found matching properties
-- If such a client can be found, pop to first tag where it is visible, and give it focus
-- @param cmd the command to execute
-- @param properties a table of properties to match against clients.  Possible entries: any properties of the client object
function run_or_raise(cmd, properties)
   local clients = client.get()
   for i, c in pairs(clients) do
      if match(properties, c) then
         local ctags = c:tags()
         if table.getn(ctags) == 0 then
            -- ctags is empty, show client on current tag
            local curtag = awful.tag.selected()
            awful.client.movetotag(curtag, c)
         else
            -- Otherwise, pop to first tag client is visible on
            awful.tag.viewonly(ctags[1])
         end
         -- And then focus the client
         client.focus = c
         c:raise()
         return
      end
   end
   awful.util.spawn(cmd)
end

-- Returns true if all pairs in table1 are present in table2
function match (table1, table2)
   for k, v in pairs(table1) do
      if table2[k] ~= v then
         return false
      end
   end
   return true
end

function dec2hex(s)
  s = string.format("%02x", s)
  return s
end

function gradient(min, max, val)
  if (val > max) then val = max end
  if (val < min) then val = min end

  local v = val - min
  local d = (max - min) * 0.5
  local r, g

  if (v <= d) then
    r = (255 * v) / d
    g = 255
  else
    r = 255
    g = 255 - (255 * (v-d)) / (max - min - d)
  end

  return "#"..dec2hex(tostring(r))..dec2hex(tostring(g)).."00"
end

-- Variable definitions {{{1
-- This is a file path to a theme file which will defines colors.
theme_path = os.getenv("HOME") ..  "/.config/awesome/theme.lua"
-- Uncommment this for a lighter theme
-- theme_path = "/usr/share/awesome/themes/sky/theme"
-- Actually load theme
beautiful.init(theme_path)

-- This is used later as the default terminal and editor to run.
terminal = "x-terminal-emulator"
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.
layouts =
{
    awful.layout.suit.max,
    awful.layout.suit.max.fullscreen,
    awful.layout.suit.fair,
    awful.layout.suit.magnifier,
    awful.layout.suit.tile.bottom,
    awful.layout.suit.tile.left
}

-- Define if we want to use titlebar on all applications.
--use_titlebar = true
-- }}}

-- {{{ Tags
-- Define a tag table which hold all screen tags.
tags = {}
for s = 1, screen.count() do
    -- Each screen has its own tag table.
    tags[s] = awful.tag({ 1, 2, 3, 4, 5 }, s)
    -- awful.tag.setproperty(tags[s], "layout", layouts[1])
end
-- }}}

-- {{{ Menu
-- Create a laucher widget and a main menu
myawesomemenu = {
   { "manual", terminal .. " -e man awesome" },
   { "edit config", editor_cmd .. " " .. awful.util.getdir("config") .. "/awesomerc.lua" },
   { "restart", awesome.restart },
   { "quit", awesome.quit }
}

mymainmenu = awful.menu({ items = { { "awesome", myawesomemenu, beautiful.awesome_icon },
                                    { "Debian", debian.menu.Debian_menu.Debian },
                                    { "open terminal", terminal }
                                  }
                        })

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

-- Create a systray
mysystray = widget({ type = "systray" })

-- Create a wibox for each screen and add it
mywibox = {}
infobox = {}
mypromptbox = {}
mylayoutbox = {}
mytaglist = {}
mytaglist.buttons = awful.util.table.join(
                    awful.button({ }, 1, awful.tag.viewonly),
                    awful.button({ modkey }, 1, awful.client.movetotag),
                    awful.button({ }, 3, awful.tag.viewtoggle),
                    awful.button({ modkey }, 3, awful.client.toggletag),
                    awful.button({ }, 4, awful.tag.viewnext),
                    awful.button({ }, 5, awful.tag.viewprev)
                    )
mytasklist = {}
mytasklist.buttons = awful.util.table.join(
                     awful.button({ }, 1, function (c)
                                              if not c:isvisible() then
                                                  awful.tag.viewonly(c:tags()[1])
                                              end
                                              client.focus = c
                                              c:raise()
                                          end),
                     awful.button({ }, 3, function ()
                                              if instance then
                                                  instance:hide()
                                                  instance = nil
                                              else
                                                  instance = awful.menu.clients({ width=250 })
                                              end
                                          end),
                     awful.button({ }, 4, function ()
                                              awful.client.focus.byidx(1)
                                              if client.focus then client.focus:raise() end
                                          end),
                     awful.button({ }, 5, function ()
                                              awful.client.focus.byidx(-1)
                                              if client.focus then client.focus:raise() end
                                          end))

for s = 1, screen.count() do
    -- Create a promptbox for each screen
    mypromptbox[s] = awful.widget.prompt({ layout = awful.widget.layout.horizontal.leftright })
    -- Create an imagebox widget which will contains an icon indicating which layout we're using.
    -- We need one layoutbox per screen.
    mylayoutbox[s] = awful.widget.layoutbox(s)
    mylayoutbox[s]:buttons(awful.util.table.join(
                           awful.button({ }, 1, function () awful.layout.inc(layouts, 1) end),
                           awful.button({ }, 3, function () awful.layout.inc(layouts, -1) end),
                           awful.button({ }, 4, function () awful.layout.inc(layouts, 1) end),
                           awful.button({ }, 5, function () awful.layout.inc(layouts, -1) end)))
    -- Create a taglist widget
    mytaglist[s] = awful.widget.taglist(s, awful.widget.taglist.label.all, mytaglist.buttons)

    -- Create a tasklist widget
    mytasklist[s] = awful.widget.tasklist(function(c)
              return awful.widget.tasklist.label.currenttags(c, s)
          end, mytasklist.buttons)

    -- Create the wibox
    infobox[s] = awful.wibox({ position = "bottom", fg = beautiful.fg_normal, bg = beautiful.bg_normal, screen = s })
    mywibox[s] = awful.wibox({ position = "top", fg = beautiful.fg_normal, bg = beautiful.bg_normal, screen = s })

-- {{{ Widgets
-- Create a textbox widget
    tb_date = widget({ type = "textbox" })

    tb_mem = widget( { type="textbox", name ="tb_mem" } )
    tb_mem.text = "  mem: "
    pb_mem = awful.widget.progressbar( )
    pb_mem.width = 40
    pb_mem.ticks_count = 10
    pb_mem.border_padding = 0
    -- pb_mem:bar_properties_set("mem", 
    -- { 
    --   ["bg"] = beautiful.pb_mem_bg,
    --   ["fg"] = beautiful.pb_mem_fg,
    --   ["border_color"] = beautiful.pb_mem_border_color,
    -- })
    -- pb_mem:bar_properties_set("swap", 
    -- { 
    --   ["bg"] = beautiful.pb_mem_bg,
    --   ["fg"] = beautiful.pb_mem_fg,
    --   ["border_color"] = beautiful.pb_mem_border_color,
    -- })

    tb_volume = widget( { type="textbox", name ="tb_volume" } )
    tb_volume.text = "  Vol: "
    pb_volume  = awful.widget.progressbar()
    pb_volume.width = 20
    pb_volume.ticks_count = 5
    pb_volume.vertical = true
    pb_volume.border_width = 0
    -- pb_volume:bar_properties_set("vol", 
    -- { 
    --   ["bg"] = beautiful.pb_vol_bg,
    --   ["fg"] = beautiful.pb_vol_fg,
    --   ["border_color"] = beautiful.pb_vol_border_color,
    --   ["max_value"] = "100.0",
    -- })

    -- pb_volume:buttons({
    --     button({ }, 1, function() awful.util.spawn("xfce4-mixer") end)
    -- })

    tb_diskfree = widget( { type="textbox", name ="tb_diskfree" } )
    tb_diskfree.text = "  df: "
    pb_diskfree = widget( { type="progressbar", name="pb_diskfree" } )
    pb_diskfree.width = 40
    pb_diskfree.ticks_count = 10
--    pb_diskfree.vertical = true
--    pb_diskfree:bar_properties_set("root", 
--    { 
--      ["bg"] = beautiful.pb_df_bg,
--      ["fg"] = beautiful.pb_df_fg,
--      ["border_color"] = beautiful.pb_df_border_color,
--    })
--    pb_diskfree:bar_properties_set("home",
--    {
--      ["bg"] = beautiful.pb_df_bg,
--      ["fg"] = beautiful.pb_df_fg,
--      ["border_color"] = beautiful.pb_df_border_color,
--    })

    gr_thermal = widget({ type = "graph" })
    gr_thermal.width = 60
    gr_thermal.grow = "right"
    gr_thermal.bg = beautiful.gr_thermal_bg
    gr_thermal.border_color = beautiful.gr_thermal_border_color
    gr_thermal:plot_properties_set("fan", 
    {
      ["bg"] = beautiful.gr_thermal_bg,
      ["fg"] = beautiful.gr_thermal_fan,
      ["scale"] = false,
      ["max_value"] = "100.0",
    })
    gr_thermal:plot_properties_set("cputemp", 
    { 
      ["bg"] = beautiful.gr_thermal_bg,
      ["fg"] = beautiful.gr_thermal_cpu,
      ["scale"] = false,
      ["max_value"] = "100.0",
      ["style"] = "line"
    })
    gr_thermal:plot_properties_set("mbtemp", 
    { 
      ["bg"] = beautiful.gr_thermal_bg,
      ["fg"] = beautiful.gr_thermal_mb,
      ["scale"] = false,
      ["max_value"] = "100.0",
      ["style"] = "line"
    })

    tb_cpu = widget( { type="textbox", name ="tb_cpu" } )
    tb_cpu.text = "  cpu: "
    gr_cpu = widget({ type = "graph" })
    gr_cpu.width = 60
    gr_cpu.grow = "right"
    gr_cpu.bg = beautiful.gr_cpu_bg
    gr_cpu.border_color = beautiful.gr_cpu_border_color

    gr_cpu:plot_properties_set("iowait", 
    { 
      ["fg"] = beautiful.gr_cpu_iowait_fg,
      ["scale"] = false,
      ["max_value"] = "100.0",
    })
    gr_cpu:plot_properties_set("total", 
    { 
      ["fg"] = beautiful.gr_cpu_total_fg,
      ["scale"] = false,
      ["max_value"] = "100.0",
      ["style"] = "bottom"
    })
    gr_cpu:plot_properties_set("user", 
    { 
      ["fg"] = beautiful.gr_cpu_user_fg,
      ["scale"] = false,
      ["max_value"] = "100.0",
      ["style"] = "bottom"
    })
    gr_cpu:plot_properties_set("nice", 
    { 
      ["fg"] = beautiful.gr_cpu_nice_fg,
      ["scale"] = false,
      ["max_value"] = "100.0",
      ["style"] = "bottom"
    })
    gr_cpu:plot_properties_set("sys", 
    { 
      ["fg"] = beautiful.gr_cpu_sys_fg,
      ["scale"] = false,
      ["max_value"] = "100.0",
      ["style"] = "bottom"
    })
    gr_cpu:plot_properties_set("freq", 
    { 
      ["fg"] = beautiful.gr_cpu_freq,
      ["scale"] = false,
      ["max_value"] = "100.0",
      ["style"] = "line"
    })

    gr_cpu:buttons({
        button({ }, 1, function() awful.util.spawn(terminal .. " -e top") end)
    })

    tb_slash = widget({ type = "textbox" })
    tb_slash.text = "/"
    tb_eth0 = widget( { type="textbox", name ="tb_eth0" } )
    tb_eth0.text = "  eth0: "
    tb_eth0_in = widget({ type = "textbox" })
    tb_eth0_in.width = "70"
    tb_eth0_out = widget({ type = "textbox" })
    tb_eth0_out.width = "70"

    tb_wlan0 = widget( { type="textbox", name ="tb_wlan0" } )
    tb_wlan0.text = "  wlan0: "
    tb_wlan0_in = widget({ type = "textbox" })
    tb_wlan0_in.width = "70"
    tb_wlan0_out = widget({ type = "textbox" })
    tb_wlan0_out.width = "70"

    tb_battery = widget({type = "textbox", name = "tb_battery" })
    tb_battery.width = 110
    tb_battery.font = "sans 6"
    -- }}}

    -- Add widgets to the wibox - order matters
    infobox[s].widgets = {
        {
            tb_diskfree,
            pb_diskfree,
            tb_mem,
            pb_mem,
            tb_wlan0,
            tb_wlan0_in,
            tb_slash,
            tb_wlan0_out,
            tb_eth0,
            tb_eth0_in,
            tb_slash,
            tb_eth0_out,
            layout = awful.widget.layout.horizontal.leftright
        },
        {
            pb_volume,
            tb_date,
            gr_cpu,
            gr_thermal,
            tb_battery,
            layout = awful.widget.layout.horizontal.rightleft
        },
        layout = awful.widget.layout.horizontal.leftright
    }
    infobox[s].screen = s
    mywibox[s].widgets = {
        mylauncher,
        mypromptbox[s],
        mytaglist[s],
        mytasklist[s],
        s == 1 and { mysystray } or nil,
        mylayoutbox[s],
        layout = awful.widget.layout.horizontal.leftright
    }
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,           }, "Left",        awful.tag.viewprev       ),
    awful.key({ modkey,           }, "Right",       awful.tag.viewnext       ),
    awful.key({ modkey,           }, "Escape",      awful.tag.history.restore),
    awful.key({                   }, "XF86Back",    awful.tag.viewprev       ),
    awful.key({                   }, "XF86Forward", awful.tag.viewnext       ),

    awful.key({ modkey,           }, "j",
        function ()
            awful.client.focus.byidx( 1)
            if client.focus then client.focus:raise() end
        end),
    awful.key({ modkey,           }, "k",
        function ()
            awful.client.focus.byidx(-1)
            if client.focus then client.focus:raise() end
        end),
    awful.key({ modkey,           }, "w", function () mymainmenu:show(true)        end),

    -- Layout manipulation
    awful.key({ modkey, "Shift"   }, "j", function () awful.client.swap.byidx(  1)    end),
    awful.key({ modkey, "Shift"   }, "k", function () awful.client.swap.byidx( -1)    end),
    awful.key({ modkey, "Control" }, "j", function () awful.screen.focus_relative( 1) end),
    awful.key({ modkey, "Control" }, "k", function () awful.screen.focus_relative(-1) end),
    awful.key({ modkey,           }, "u", awful.client.urgent.jumpto),
    awful.key({ modkey,           }, "Tab",
        function ()
            awful.client.focus.history.previous()
            if client.focus then
                client.focus:raise()
            end
        end),

    -- Standard program
    awful.key({ modkey, "Control" }, "r", awesome.restart),
    awful.key({ modkey, "Shift"   }, "q", awesome.quit),

    awful.key({ modkey,           }, "l",     function () awful.tag.incmwfact( 0.05)    end),
    awful.key({ modkey,           }, "h",     function () awful.tag.incmwfact(-0.05)    end),
    awful.key({ modkey, "Shift"   }, "h",     function () awful.tag.incnmaster( 1)      end),
    awful.key({ modkey, "Shift"   }, "l",     function () awful.tag.incnmaster(-1)      end),
    awful.key({ modkey, "Control" }, "h",     function () awful.tag.incncol( 1)         end),
    awful.key({ modkey, "Control" }, "l",     function () awful.tag.incncol(-1)         end),
    awful.key({ modkey,           }, "space", function () awful.layout.inc(layouts,  1) end),
    awful.key({ modkey, "Shift"   }, "space", function () awful.layout.inc(layouts, -1) end),

    -- Prompt
    awful.key({ modkey },            "r",     function () mypromptbox[mouse.screen]:run() end),

    awful.key({ modkey }, "x",
              function ()
                  awful.prompt.run({ prompt = "Run Lua code: " },
                  mypromptbox[mouse.screen].widget,
                  awful.util.eval, nil,
                  awful.util.getdir("cache") .. "/history_eval")
              end),

    -- custom shortcuts
    awful.key({ modkey,           }, "f",     function () awful.util.spawn("iceweasel") end),
    awful.key({ modkey,           }, "g",     function () awful.util.spawn(terminal .. " -e ssh -t glasshouse screen -RD ") end),
    awful.key({ modkey,           }, "e",     function () awful.util.spawn("gvim") end),
    awful.key({ modkey,           }, "n",     function () awful.util.spawn("thunar") end),
    awful.key({                   }, "XF86ScreenSaver", function () awful.util.spawn("xtrlock") end),

    awful.key({ modkey,           }, "Return",
              function ()
                  local screen_cmd = terminal .. " -e screen -RD -S " .. os.getenv("USER") .. awful.tag.selected().name
                  awful.util.spawn(screen_cmd)
              end)
)

clientkeys = awful.util.table.join(
    awful.key({ modkey,           }, "f",      function (c) c.fullscreen = not c.fullscreen  end),
    awful.key({ modkey, "Shift"   }, "c",      function (c) c:kill()                         end),
    awful.key({ modkey, "Control" }, "space",  awful.client.floating.toggle                     ),
    awful.key({ modkey, "Control" }, "Return", function (c) c:swap(awful.client.getmaster()) end),
    awful.key({ modkey,           }, "o",      awful.client.movetoscreen                        ),
    awful.key({ modkey, "Shift"   }, "r",      function (c) c:redraw()                       end),
    awful.key({ modkey,           }, "t",      function (c) c.minimized = not c.minimized    end),
    awful.key({ modkey,           }, "m",
        function (c)
            c.maximized_horizontal = not c.maximized_horizontal
            c.maximized_vertical   = not c.maximized_vertical
        end)
)

-- Compute the maximum number of digit we need, limited to 9
keynumber = 0
for s = 1, screen.count() do
   keynumber = math.min(9, math.max(#tags[s], keynumber));
end

-- 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, keynumber do
    globalkeys = awful.util.table.join(globalkeys,
        awful.key({ modkey }, "#" .. i + 9,
                  function ()
                        local screen = mouse.screen
                        if tags[screen][i] then
                            awful.tag.viewonly(tags[screen][i])
                        end
                  end),
        awful.key({ modkey, "Control" }, "#" .. i + 9,
                  function ()
                      local screen = mouse.screen
                      if tags[screen][i] then
                          awful.tag.viewtoggle(tags[screen][i])
                      end
                  end),
        awful.key({ modkey, "Shift" }, "#" .. i + 9,
                  function ()
                      if client.focus and tags[client.focus.screen][i] then
                          awful.client.movetotag(tags[client.focus.screen][i])
                      end
                  end),
        awful.key({ modkey, "Control", "Shift" }, "#" .. i + 9,
                  function ()
                      if client.focus and tags[client.focus.screen][i] then
                          awful.client.toggletag(tags[client.focus.screen][i])
                      end
                  end))
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 = true,
                     keys = clientkeys,
                     buttons = clientbuttons } },
    { rule = { class = "MPlayer" },
      properties = { floating = true } },
    { rule = { class = "pinentry" },
      properties = { floating = true } },
    { rule = { class = "gimp" },
      properties = { floating = true } },
    { rule = { class = "Xfce4-mixer" },
      properties = { floating = true } },
    { rule = { class = "mocp" },
      properties = { floating = true } },
    { rule = { class = "Wicd-client.py" },
      properties = { floating = true } },
    { rule = { class = "twitux" },
      properties = { floating = true } },
    { rule = { class = "glxgears" },
      properties = { floating = true } },
    -- Set Firefox to always map on tags number 2 of screen 1.
    { rule = { class = "Firefox" },
      properties = { tag = tags[1][1] } },
}
-- }}}

-- {{{ Signals
-- {{{ defaults
-- Signal function to execute when a new client appears.
client.add_signal("manage", function (c, startup)
    -- Add a titlebar
    -- awful.titlebar.add(c, { modkey = modkey })

    -- Enable sloppy focus
    c:add_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)

    if not startup then
        -- Set the windows at the slave,
        -- i.e. put it at the end of others instead of setting it master.
        -- awful.client.setslave(c)

        -- Put windows in a smart way, only if they does not set an initial position.
        if not c.size_hints.user_position and not c.size_hints.program_position then
            awful.placement.no_overlap(c)
            awful.placement.no_offscreen(c)
        end
    end
end)

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

-- {{{ custom

-- Hook called every second
mytimer = timer { timeout = 1 }
mytimer:add_signal("timeout", function()
    -- date / time
    tb_date.text = os.date("  %a, %e %b %X  ")

    -- network in/out
    local data = ethernet("wlan0")
    tb_wlan0_in.text =  " "..data[1].." "
    tb_wlan0_out.text = " "..data[2].." "
    data = ethernet("eth0")
    tb_eth0_in.text =  " "..data[1].." "
    tb_eth0_out.text = " "..data[2].." "

    -- cpu graph
    local cpudata = cpu("cpu ")
    gr_cpu:plot_data_add('user',   cpudata[1] )
    gr_cpu:plot_data_add('nice',   cpudata[2] )
    gr_cpu:plot_data_add('iowait', cpudata[3] )
    gr_cpu:plot_data_add('sys',    cpudata[4] )
    local curfreq = cpufreq('cpu1', 800000, 2400000)
    gr_cpu:plot_data_add('freq', curfreq )


    -- thermal
    local curtemp = temp(1, 35, 70)
    gr_thermal:plot_data_add('cputemp', curtemp )
    curtemp = temp(2, 35, 70)
    gr_thermal:plot_data_add('mbtemp', curtemp )
    local curfan = ibmfan(0, 6000)
    gr_thermal:plot_data_add('fan', curfan)
    local volume = ibmVolume()
    -- pb_volume:bar_data_add('vol', volume)
end)
mytimer:start()

-- mytimer = timer { timeout = 2 }
-- mytimer:add_signal("timeout", function()
--     local memdata = memory("/proc/meminfo")
--     pb_mem:bar_data_add("mem",  memdata[1] )
--     pb_mem:bar_data_add("swap", memdata[2] )
-- end)
-- local memdata = memory("/proc/meminfo")
-- pb_mem:bar_data_add("mem",  memdata[1] )
-- pb_mem:bar_data_add("swap", memdata[2] )
-- mytimer:start()

mytimer = timer { timeout = 30 }
mytimer:add_signal("timeout", function()
    --batteryInfo("BAT0", tb_battery)
    tb_battery.text = battRemaining()
    local df_data = diskfree("df -P / /home")
    -- pb_diskfree:bar_data_add("root", df_data[1] )
    -- pb_diskfree:bar_data_add("home", df_data[2] )
end)
tb_battery.text = battRemaining()
local df_data = diskfree("df / /home")
pb_diskfree:bar_data_add("root", df_data[1] )
pb_diskfree:bar_data_add("home", df_data[2] )
mytimer:start()
-- }}}


-- }}}

-- vim: et nu foldmethod=marker