Lain widgets

Some time ago I made two additional widgets for the Lain widget library used by the Awesome window manager. You could place them in ~/.config/awesome/lain/widget/, or somewhere else in your lua search path.

1. ryzen.lua [Download]
   The original temp.lua widget seemed to work only on Intel processors, at least on my AMD Ryzen processor it was a total no-go. So I modified it to use lm_sensors for temperature information instead of /sys pseudofiles. The use of this widget is of course not restricted to AMD Ryzen processors only, and can be easily modified to read other values from lm_sensors.

   1. --[[

   3.      System temperature widget | AMD Ryzen

   4.      Using lm_sensors instead of /sys/devices

   6. --]]

   8. local helpers  = require("lain.helpers")

   9. local wibox    = require("wibox")

   10. local tonumber = tonumber

   12. -- {thermal,core} temperature info

   13. -- lain.widget.ryzen

   15. local function factory(args)

   16.     local ryzen    = { widget = wibox.widget.textbox() }

   17.     local args     = args or {}

   18.     local dev      = args.dev or ""

   19.     local sensor   = args.sensor

   20.     local timeout  = args.timeout or 2

   21.     local settings = args.settings or function() end

   23.     function ryzen.update()

   24.         local sensors_cmd = "/usr/bin/sensors -A " .. dev .. " | grep " .. sensor .. " | cut -c16-19"

   25. 	    helpers.async_with_shell(sensors_cmd, function(stdout, exit_code)

   26. 		coretemp_now = tonumber(stdout)

   27. 		if (exit_code ~= 0) or (coretemp_now == nil) then coretemp_now = "N/A" end

   28. 		widget = ryzen.widget

   29. 		settings()

   30.             end)

   31.     end

   33.     helpers.newtimer("thermal", timeout, ryzen.update)

   35.     return ryzen

   36. end

   38. return factory

   An usage example. Please see the output of sensors for the dev and sensor values of your system.

   1. local ryzen = lain.widget.ryzen({

   2.     dev = "k10temp-pci-00c3",

   3.     sensor = "Tctl",

   4.     timeout = 10,

   5.     settings = function()

   6.         widget:set_markup(markup.fontfg(myfont, mycolor, coretemp_now .. "°C "))

   7.     end

   8. })

2. mouse.lua [Download]
   This widget reads the battery status of a wireless mouse. It can also be used to observe any other device supported by UPower. See the output of upower --dump for the supported devices on your system.

   1. --[[

   3.      Mouse, kbd etc. wireless HID device battery

   4.      state reading using UPower

   6. --]]

   8. local helpers  = require("lain.helpers")

   9. local wibox    = require("wibox")

   10. local tonumber = tonumber

   12. -- Wireless HID device battery info

   13. -- lain.widget.mouse

   15. local function factory(args)

   16.     local mouse    = { widget = wibox.widget.textbox() }

   17.     local args     = args or {}

   18.     local dev      = args.dev or ""

   19.     local timeout  = args.timeout or 60

   20.     local settings = args.settings or function() end

   22.     function mouse.update()

   23.         local upower_cmd = "upower -i " .. dev .. " | grep percentage | grep -E -o '[0-9]+'"

   24. 	    helpers.async_with_shell(upower_cmd, function(stdout, exit_code)

   25. 		mousebatt = tonumber(stdout)

   26. 		if (exit_code ~= 0) or (mousebatt == nil) then mousebatt = "N/A" end

   27. 		widget = mouse.widget

   28. 		settings()

   29. 	    end)

   30.     end

   32.     helpers.newtimer("battery", timeout, mouse.update)

   34.     return mouse

   35. end

   37. return factory

   An usage example for a Logitech Trackball M570

   1. local mouse = lain.widget.mouse({

   2.     dev = "/org/freedesktop/UPower/devices/mouse_hidpp_battery_0",

   3.     timeout = 3600,

   4.     settings = function()

   5.         widget:set_markup(markup.fontfg(myfont, mycolor, mousebatt .. "% "))

   6.     end

   7. })

(EDIT 18.5.2022: If this suddenly stops working, please recheck the device file path. For example, on kernel 5.17.8 the device file mouse_hidpp_battery_0 was changed to battery_hidpp_battery_0)