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Update bat.lua
[etc/awesome.git] / widgets / bat.lua
index fa61c3484690dc8723eff04418b9bc02fdca411b..b1180355bde75514f5229328492f267f8776ca8f 100644 (file)
@@ -1,10 +1,10 @@
 
 --[[
-                                                  
-     Licensed under GNU General Public License v2 
-      * (c) 2013,      Luke Bonham                
-      * (c) 2010-2012, Peter Hofmann              
-                                                  
+                                                                                                 
+        Licensed under GNU General Public License v2 
+         * (c) 2013,      Luke Bonham                
+         * (c) 2010-2012, Peter Hofmann              
+                                                                                                 
 --]]
 
 local newtimer     = require("lain.helpers").newtimer
@@ -15,104 +15,118 @@ local wibox        = require("wibox")
 
 local math         = { floor  = math.floor }
 local string       = { format = string.format }
+local tonumber     = tonumber
 
 local setmetatable = setmetatable
 
 -- Battery infos
 -- lain.widgets.bat
-local bat = {}
 
 local function worker(args)
-    local args = args or {}
-    local timeout = args.timeout or 30
-    local battery = args.battery or "BAT0"
-    local settings = args.settings or function() end
-
-    bat.widget = wibox.widget.textbox('')
-
-    bat_now = {
-        status = "not present",
-        perc   = "N/A",
-        time   = "N/A",
-        watt   = "N/A"
-    }
-
-    function bat.update()
-        local present = first_line("/sys/class/power_supply/"
-                                   .. battery
-                                   .. "/present")
-
-        if present == "1"
-        then
-            local rate = first_line("/sys/class/power_supply/"
-                                    .. battery ..
-                                    "/power_now")
-            local ratev = first_line("/sys/class/power_supply/"
-                                    .. battery ..
-                                     "/voltage_now")
-            local rem = first_line("/sys/class/power_supply/"
-                                    .. battery ..
-                                   "/energy_now")
-            local tot = first_line("/sys/class/power_supply/"
-                                    .. battery ..
-                                   "/energy_full")
-            bat_now.status = first_line("/sys/class/power_supply/"
-                                    .. battery ..
-                                   "/status")
-
-            local time_rat = 0
-            if bat_now.status == "Charging"
-            then
-                time_rat = (tot - rem) / rate
-            elseif bat_now.status == "Discharging"
-            then
-                time_rat = rem / rate
-            end
-
-            local hrs = math.floor(time_rat)
-            local min = (time_rat - hrs) * 60
-
-            bat_now.time = string.format("%02d:%02d", hrs, min)
-            bat_now.perc = (rem / tot) * 100
-            bat_now.watt = string.format("%.2fW", (rate * ratev) / 1e12)
-
-            -- notifications for low and critical states
-            if bat_now.perc <= 5
-            then
-                bat.id = naughty.notify({
-                    text = "shutdown imminent",
-                    title = "battery nearly exhausted",
-                    position = "top_right",
-                    timeout = 15,
-                    fg="#000000",
-                    bg="#ffffff",
-                    ontop = true,
-                    replaces_id = bat.id
-                }).id
-            elseif bat.perc <= 15
-            then
-                bat.id = naughty.notify({
-                    text = "plug the cable",
-                    title = "battery low",
-                    position = "top_right",
-                    timeout = 15,
-                    fg="#202020",
-                    bg="#cdcdcd",
-                    ontop = true,
-                    replaces_id = bat.id
-                }).id
-            end
-
-            bat_now.perc = string.format("%d", bat_now.perc)
-        end
-
-        widget = bat.widget
-        settings()
-    end
-
-    newtimer("bat", timeout, bat.update)
-
-    return bat.widget
+       local bat      = {}
+       local args     = args or {}
+       local timeout  = args.timeout or 30
+       local battery  = args.battery or "BAT0"
+       local ac       = args.ac or "AC0"
+       local notify   = args.notify or "on"
+       local settings = args.settings or function() end
+
+       bat.widget = wibox.widget.textbox('')
+
+       bat_notification_low_preset = {
+               title = "Battery low",
+               text = "Plug the cable!",
+               timeout = 15,
+               fg = "#202020",
+               bg = "#CDCDCD"
+       }
+
+       bat_notification_critical_preset = {
+               title = "Battery exhausted",
+               text = "Shutdown imminent",
+               timeout = 15,
+               fg = "#000000",
+               bg = "#FFFFFF"
+       }
+
+       function update()
+               bat_now = {
+                       status    = "Not present",
+                       ac_status = "N/A",
+                       perc      = "N/A",
+                       time      = "N/A",
+                       watt      = "N/A"
+               }
+
+               local bstr    = "/sys/class/power_supply/" .. battery
+               local astr    = "/sys/class/power_supply/" .. ac
+               local present = first_line(bstr .. "/present")
+
+               if present == "1"
+               then
+                       -- current_now(I)[uA], voltage_now(U)[uV], power_now(P)[uW]
+                       local rate_current      = tonumber(first_line(bstr .. "/current_now"))
+                       local rate_voltage      = tonumber(first_line(bstr .. "/voltage_now"))
+                       local rate_power        = tonumber(first_line(bstr .. "/power_now"))
+
+                       -- energy_now(P)[uWh], charge_now(I)[uAh] 
+                       local energy_now        = tonumber(first_line(bstr .. "/energy_now") or
+                                                                               first_line(bstr .. "/charge_now"))
+                                                 
+                       -- energy_full(P)[uWh], charge_full(I)[uAh],                       
+                       local energy_full       = tonumber(first_line(bstr .. "/energy_full") or
+                                                                               first_line(bstr .. "/charge_full"))
+
+
+                       local energy_percentage = tonumber(first_line(bstr .. "/capacity")) or
+                                                                               math.floor((energy_now / energy_full) * 100)
+
+                       bat_now.status = first_line(bstr .. "/status") or "N/A"
+                       bat_now.ac_status     = first_line(astr .. "/online") or "N/A"
+
+                       local rate_time = 0
+                       if bat_now.status == "Charging"
+                       then
+                               rate_time = (energy_full - energy_now) / rate_power or rate_current
+                       elseif bat_now.status == "Discharging"
+                       then
+                               rate_time = energy_now / rate_power or rate_current
+                       end
+
+                       local hours   = math.floor(rate_time)
+                       local minutes = math.floor((rate_time - hours) * 60)
+
+                       bat_now.perc = string.format("%d", energy_percentage)
+                       bat_now.time = string.format("%02d:%02d", hours, minutes)
+                       bat_now.watt = string.format("%.2fW", rate_power / 1e6 or (rate_voltage * rate_current)  / 1e12)
+               
+               end
+               widget = bat.widget
+               settings()
+
+               -- notifications for low and critical states
+               if bat_now.status == "Discharging" and notify == "on" and bat_now.perc
+               then
+                       local nperc = tonumber(bat_now.perc) or 100
+                       if nperc <= 5
+                       then
+                               bat.id = naughty.notify({
+                                       preset = bat_notification_critical_preset,
+                                       replaces_id = bat.id,
+                               }).id
+                       elseif nperc <= 15
+                       then
+                               bat.id = naughty.notify({
+                                       preset = bat_notification_low_preset,
+                                       replaces_id = bat.id,
+                               }).id
+                       end
+               end
+       end
+
+       newtimer(battery, timeout, update)
+
+       return setmetatable(bat, { __index = bat.widget })
 end
 
-return setmetatable(bat, { __call = function(_, ...) return worker(...) end })
+return setmetatable({}, { __call = function(_, ...) return worker(...) end })