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yawn doc added
[etc/awesome.git] / widgets / sysload.lua
1
2 --[[
3                                                   
4      Licensed under GNU General Public License v2 
5       * (c) 2013,      Luke Bonham                
6       * (c) 2010-2012, Peter Hofmann              
7                                                   
8 --]]
9
10 local markup       = require("lain.util.markup")
11 local helpers      = require("lain.helpers")
12
13 local awful        = require("awful")
14 local beautiful    = require("beautiful")
15 local wibox        = require("wibox")
16
17 local io           = io
18 local string       = { format = string.format,
19                        match  = string.match }
20
21 local setmetatable = setmetatable
22
23 -- System load
24 -- lain.widgets.sysload
25 local sysload = {}
26
27 function worker(args)
28     local args = args or {}
29     local refresh_timeout = args.refresh_timeout or 5
30     local show_all = args.show_all or false
31     local header = args.header or " Load "
32     local header_color = args.header_color or beautiful.fg_normal or "#FFFFFF"
33     local color = args.color or beautiful.fg_focus or "#FFFFFF" 
34     local app = args.app or "top"
35
36     local mysysload = wibox.widget.textbox()
37
38     local mysysloadupdate = function()
39         local f = io.open("/proc/loadavg")
40         local ret = f:read("*all")
41         f:close()
42
43         if show_all
44         then
45             local a, b, c = string.match(ret, "([^%s]+) ([^%s]+) ([^%s]+)")
46             mysysload:set_text(string.format("%s %s %s", a, b, c))
47         else
48             local a = string.match(ret, "([^%s]+) ")
49             mysysload:set_text(string.format("%s", a))
50         end
51         mysysload:set_markup(markup(header_color, header) ..
52                              markup(color, mysysload._layout.text .. " "))
53     end
54
55     local mysysloadtimer = timer({ timeout = refresh_timeout })
56     mysysloadtimer:connect_signal("timeout", mysysloadupdate)
57     mysysloadtimer:start()
58     mysysloadtimer:emit_signal("timeout")
59
60     mysysload:buttons(awful.util.table.join(
61         awful.button({}, 0,
62             function()
63                 helpers.run_in_terminal(app)
64             end)
65     ))
66
67     return mysysload
68 end
69
70 return setmetatable(sysload, { __call = function(_, ...) return worker(...) end })