add battery widget to bar
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2 changed files with 335 additions and 0 deletions
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@ -16,6 +16,8 @@ local menubar = require("menubar")
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local hotkeys_popup = require("awful.hotkeys_popup")
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-- Enable hotkeys help widget for VIM and other apps when client with a matching name is opened:
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require("awful.hotkeys_popup.keys")
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-- widgets
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local battery_widget = require("widgets.battery")
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-- {{{ Error handling
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-- Check if awesome encountered an error during startup and fell back to
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@ -222,6 +224,29 @@ awful.screen.connect_for_each_screen(function(s)
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wibox.widget.systray(),
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mytextclock,
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s.mylayoutbox,
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battery_widget {
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ac = "AC",
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adapter = "BAT1",
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ac_prefix = "AC: ",
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battery_prefix = "Bat: ",
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percent_colors = {
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{ 25, "red" },
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{ 50, "orange" },
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{ 999, "green" },
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},
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listen = true,
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timeout = 10,
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widget_text = "${AC_BAT}${color_on}${percent}%${color_off}",
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widget_font = "Jetbrains Mono 16",
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tooltip_text = "Battery ${state}${time_est}\nCapacity: ${capacity_percent}%",
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alert_threshold = 5,
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alert_timeout = 0,
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alert_title = "Low battery !",
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alert_text = "${AC_BAT}${time_est}",
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--alert_icon = "~/Downloads/low_battery_icon.png",
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warn_full_battery = true,
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--full_battery_icon = "~/Downloads/full_battery_icon.png",
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},
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},
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}
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end)
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310
config/awesome/widgets/battery.lua
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310
config/awesome/widgets/battery.lua
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@ -0,0 +1,310 @@
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-- Battery widget
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local awful = require("awful")
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local gears = require("gears")
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local wibox = require("wibox")
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local naughty = require("naughty")
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local timer = gears.timer or timer
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local watch = awful.spawn and awful.spawn.with_line_callback
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------------------------------------------
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-- Private utility functions
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------------------------------------------
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local tolower = string.lower
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local function file_exists(command)
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local f = io.open(command)
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if f then f:close() end
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return f and true or false
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end
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local function readfile(command)
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local file = io.open(command)
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if not file then return nil end
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local text = file:read('*all')
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file:close()
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return text
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end
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local function color_tags(color)
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if color
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then
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return '<span color="' .. color .. '">', '</span>'
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else
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return '', ''
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end
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end
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local function round(value)
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return math.floor(value + 0.5)
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end
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local function trim(s)
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if not s then return nil end
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return (s:gsub("^%s*(.-)%s*$", "%1"))
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end
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local function read_trim(filename)
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return trim(readfile(filename)) or ""
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end
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local function substitute(template, context)
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if type(template) == "string" then
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return (template:gsub("%${([%w_]+)}", function(key)
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return tostring(context[key] or "Err!")
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end))
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else
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-- function / functor:
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return template(context)
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end
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end
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local function lookup_by_limits(limits, value)
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if type(limits) == "table" then
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local last = nil
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if value then
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for k, v in ipairs(limits) do
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if (value <= v[1]) then
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return v[2]
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end
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last = v[2]
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end
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end
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return last
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else
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return limits
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end
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end
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------------------------------------------
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-- Battery widget interface
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------------------------------------------
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local battery_widget = {}
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local sysfs_names = {
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charging = {
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present = "present",
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state = "status",
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rate = "current_now",
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charge = "charge_now",
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capacity = "charge_full",
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design = "charge_full_design",
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percent = "capacity",
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},
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discharging = {
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present = "present",
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state = "status",
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rate = "power_now",
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charge = "energy_now",
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capacity = "energy_full",
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design = "energy_full_design",
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percent = "capacity"
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},
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}
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function battery_widget:new(args)
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if args.adapter then
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return setmetatable({}, { __index = self }):init(args)
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end
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-- creates an empty container wibox, which can be added to your panel even if its empty
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local widgets = { layout = wibox.layout.fixed.horizontal }
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local batteries, mains, usb, ups = self:discover()
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local ac = mains[1] or usb[1] or ups[1]
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for i, adapter in ipairs(batteries) do
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local _args = setmetatable({ adapter = adapter, ac = ac }, { __index = args })
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table.insert(widgets, self(_args).widget)
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end
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return widgets
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end
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function battery_widget:discover()
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local pow = "/sys/class/power_supply/"
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local adapters = { Battery = {}, UPS = {}, Mains = {}, USB = {} }
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for adapter in io.popen("ls -1 " .. pow):lines() do
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local type = read_trim(pow .. adapter .. "/type")
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table.insert(adapters[type], adapter)
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end
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return adapters.Battery, adapters.Mains, adapters.USB, adapters.UPS
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end
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function battery_widget:init(args)
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self.ac = args.ac or "AC"
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self.adapter = args.adapter or "BAT0"
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self.ac_prefix = args.ac_prefix or "AC: "
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self.battery_prefix = args.battery_prefix or "Bat: "
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self.percent_colors = args.percent_colors or args.limits or {
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{ 25, "red" },
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{ 50, "orange" },
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{ 999, "green" },
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}
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self.widget_text = args.widget_text or (
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"${AC_BAT}${color_on}${percent}%${color_off}")
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self.tooltip_text = args.tooltip_text or (
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"Battery ${state}${time_est}\nCapacity: ${capacity_percent}%")
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self.alert_threshold = args.alert_threshold or 5
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self.alert_timeout = args.alert_timeout or 0
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self.alert_title = args.alert_title or "Low battery !"
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self.alert_text = args.alert_text or "${AC_BAT}${time_est}"
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self.alert_icon = args.alert_icon or nil
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self.widget = wibox.widget.textbox()
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self.widget.font = args.widget_font
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self.tooltip = awful.tooltip({ objects = { self.widget } })
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self.warn_full_battery = args.warn_full_battery
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self.full_battery_icon = args.full_battery_icon or nil
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self.widget:buttons(awful.util.table.join(
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awful.button({}, 1, function() self:update() end),
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awful.button({}, 3, function() self:update() end)
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))
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self.timer = timer({ timeout = args.timeout or 10 })
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self.timer:connect_signal("timeout", function() self:update() end)
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self.timer:start()
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self:update()
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if (args.listen or args.listen == nil) and watch then
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self.listener = watch("acpi_listen", {
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stdout = function(line) self:update() end,
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})
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awesome.connect_signal("exit", function()
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awesome.kill(self.listener, awesome.unix_signal.SIGTERM)
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end)
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end
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return self
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end
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function battery_widget:get_state()
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local pow = "/sys/class/power_supply/"
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local ac = pow .. self.ac
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local bat = pow .. self.adapter
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local sysfs = (file_exists(bat .. "/" .. sysfs_names.charging.rate)
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and sysfs_names.charging
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or sysfs_names.discharging)
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-- If there is no battery on this machine.
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if not sysfs.state then return nil end
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-- return value
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local r = {
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state = tolower(read_trim(bat .. "/" .. sysfs.state)),
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present = tonumber(read_trim(bat .. "/" .. sysfs.present)),
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rate = tonumber(read_trim(bat .. "/" .. sysfs.rate)),
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charge = tonumber(read_trim(bat .. "/" .. sysfs.charge)),
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capacity = tonumber(read_trim(bat .. "/" .. sysfs.capacity)),
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design = tonumber(read_trim(bat .. "/" .. sysfs.design)),
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percent = tonumber(read_trim(bat .. "/" .. sysfs.percent)),
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}
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r.ac_state = tonumber(read_trim(ac .. "/online"))
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if r.state == "unknown" then
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r.state = "charged"
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end
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if r.percent == nil and r.charge and r.capacity then
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r.percent = round(r.charge * 100 / r.capacity)
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end
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return r
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end
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function battery_widget:update()
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local ctx = self:get_state()
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-- If there is no battery on this machine.
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if not ctx then return nil end
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-- AC/battery prefix
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ctx.AC_BAT = (ctx.ac_state == 1
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and lookup_by_limits(self.ac_prefix, ctx.percent)
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or lookup_by_limits(self.battery_prefix, ctx.percent)
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or "Err!")
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-- Colors
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ctx.color_on, ctx.color_off = color_tags(
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lookup_by_limits(self.percent_colors, ctx.percent))
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-- estimate time
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ctx.charge_dir = 0 -- +1|0|-1 -> charging|static|discharging
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ctx.time_left = nil -- time until charging/discharging complete
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ctx.time_text = ""
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ctx.time_est = ""
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if ctx.rate and ctx.rate ~= 0 then
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if not ctx.state or ctx.state == "discharging" then
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ctx.charge_dir = -1
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ctx.time_left = ctx.charge / ctx.rate
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elseif ctx.state == "charging" then
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ctx.charge_dir = 1
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ctx.time_left = (ctx.capacity - ctx.charge) / ctx.rate
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end
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end
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if ctx.time_left then
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ctx.hours = math.floor((ctx.time_left))
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ctx.minutes = math.floor((ctx.time_left - ctx.hours) * 60)
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if ctx.hours > 0
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then
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ctx.time_text = ctx.hours .. "h " .. ctx.minutes .. "m"
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else
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ctx.time_text = ctx.minutes .. "m"
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end
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ctx.time_est = ": " .. ctx.time_text .. " remaining"
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end
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-- capacity text
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if ctx.capacity and ctx.design then
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ctx.capacity_percent = round(ctx.capacity / ctx.design * 100)
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end
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-- for use in functions
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ctx.obj = self
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-- update text
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self.widget:set_markup(substitute(self.widget_text, ctx))
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self.tooltip:set_text(substitute(self.tooltip_text, ctx))
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-- low battery notification
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if naughty then
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if (ctx.state == "discharging" and
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ctx.percent and ctx.percent <= self.alert_threshold) then
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self:notify(substitute(self.alert_title, ctx),
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substitute(self.alert_text, ctx),
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self.alert_icon)
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elseif ctx.state == "full" and self.warn_full_battery then
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self:notify('Battery Full!', 'Remove power cord', self.full_battery_icon)
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else
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if self.alert then
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naughty.destroy(
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self.alert,
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naughty.notificationClosedReason.dismissedByCommand)
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self.alert = nil
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end
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end
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end
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end
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function battery_widget:notify(title, text, icon)
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if self.alert then
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naughty.replace_text(self.alert, title, text)
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else
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self.alert = naughty.notify({
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title = title,
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text = text,
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icon = icon,
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preset = naughty.config.presets.critical,
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timeout = self.alert_timeout
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})
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end
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end
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return setmetatable(battery_widget, {
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__call = battery_widget.new,
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})
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