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lain: wiki updated
[etc/awesome.git] / widgets / bat.lua
diff --git a/widgets/bat.lua b/widgets/bat.lua
index 61828ecfe9cb98c164c6526becdd75b4db363cc7..152fa12a626a6ed70eb7f17d6e8521209be436e6 100644 (file)
--- a/widgets/bat.lua
+++ b/widgets/bat.lua
@@ -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
 --]]
 
 local newtimer     = require("lain.helpers").newtimer
@@ -23,116 +23,99 @@ local setmetatable = setmetatable
 -- lain.widgets.bat
 
 local function worker(args)
 -- lain.widgets.bat
 
 local function worker(args)
-    local bat = {}
-    local args = args or {}
-    local timeout = args.timeout or 30
-    local battery = args.battery or "BAT0"
-    local notify = args.notify or "on"
+    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 = {
     local settings = args.settings or function() end
 
     bat.widget = wibox.widget.textbox('')
 
     bat_notification_low_preset = {
-        title = "Battery low",
-        text = "Plug the cable!",
+        title   = "Battery low",
+        text    = "Plug the cable!",
         timeout = 15,
         timeout = 15,
-        fg = "#202020",
-        bg = "#CDCDCD"
+        fg      = "#202020",
+        bg      = "#CDCDCD"
     }
 
     bat_notification_critical_preset = {
     }
 
     bat_notification_critical_preset = {
-        title = "Battery exhausted",
-        text = "Shutdown imminent",
+        title   = "Battery exhausted",
+        text    = "Shutdown imminent",
         timeout = 15,
         timeout = 15,
-        fg = "#000000",
-        bg = "#FFFFFF"
+        fg      = "#000000",
+        bg      = "#FFFFFF"
     }
 
     function update()
         bat_now = {
     }
 
     function update()
         bat_now = {
-            status = "Not present",
-            perc   = "N/A",
-            time   = "N/A",
-            watt   = "N/A"
+            status    = "Not present",
+            ac_status = "N/A",
+            perc      = "N/A",
+            time      = "N/A",
+            watt      = "N/A"
         }
 
         }
 
-        local bstr  = "/sys/class/power_supply/" .. battery
-
+        local bstr    = "/sys/class/power_supply/" .. battery
+        local astr    = "/sys/class/power_supply/" .. ac
         local present = first_line(bstr .. "/present")
 
         if present == "1"
         then
         local present = first_line(bstr .. "/present")
 
         if present == "1"
         then
-            local rate  = first_line(bstr .. "/power_now") or
-                          first_line(bstr .. "/current_now")
-
-            local ratev = first_line(bstr .. "/voltage_now")
+            -- 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"))
 
 
-            local rem   = first_line(bstr .. "/energy_now") or
-                          first_line(bstr .. "/charge_now")
+            -- energy_now(P)[uWh], charge_now(I)[uAh]
+            local energy_now        = tonumber(first_line(bstr .. "/energy_now") or
+                                      first_line(bstr .. "/charge_now"))
 
 
-            local tot   = first_line(bstr .. "/energy_full") or
-                          first_line(bstr .. "/charge_full")
+            -- energy_full(P)[uWh], charge_full(I)[uAh]
+            local energy_full       = tonumber(first_line(bstr .. "/energy_full") or
+                                      first_line(bstr .. "/charge_full"))
 
 
-            bat_now.status = first_line(bstr .. "/status") or "N/A"
+            local energy_percentage = tonumber(first_line(bstr .. "/capacity")) or
+                                      math.floor((energy_now / energy_full) * 100)
 
 
-            rate  = tonumber(rate) or 1
-            ratev = tonumber(ratev)
-            rem   = tonumber(rem)
-            tot   = tonumber(tot)
+            bat_now.status    = first_line(bstr .. "/status") or "N/A"
+            bat_now.ac_status = first_line(astr .. "/online") or "N/A"
 
 
-            local time_rat = 0
-            if bat_now.status == "Charging"
+            -- update {perc,time,watt} iff rate > 0 and battery not full
+            if ((rate_current and rate_current > 0) or (rate_power and rate_power > 0))
+                and bat_now.status ~= "N/A" and bat_now.status ~= "Full"
             then
             then
-                time_rat = (tot - rem) / rate
-            elseif bat_now.status == "Discharging"
-            then
-                time_rat = rem / rate
-            end
-
-            local hrs = math.floor(time_rat)
-            if hrs < 0 then hrs = 0 elseif hrs > 23 then hrs = 23 end
-
-            local min = math.floor((time_rat - hrs) * 60)
-            if min < 0 then min = 0 elseif min > 59 then min = 59 end
-
-            bat_now.time = string.format("%02d:%02d", hrs, min)
-
-            bat_now.perc = first_line(bstr .. "/capacity")
-
-            if not bat_now.perc then
-                local perc = (rem / tot) * 100
-                if perc <= 100 then
-                    bat_now.perc = string.format("%d", perc)
-                elseif perc > 100 then
-                    bat_now.perc = "100"
-                elseif perc < 0 then
-                    bat_now.perc = "0"
+                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
                 end
-            end
 
 
-            if rate ~= nil and ratev ~= nil then
-                bat_now.watt = string.format("%.2fW", (rate * ratev) / 1e12)
-            else
-                bat_now.watt = "N/A"
-            end
+                local hours   = math.floor(rate_time)
+                local minutes = math.floor((rate_time - hours) * 60)
+                local watt    = rate_power and (rate_power / 1e6) or (rate_voltage * rate_current) / 1e12
 
 
+                bat_now.perc = string.format("%d", energy_percentage)
+                bat_now.time = string.format("%02d:%02d", hours, minutes)
+                bat_now.watt = string.format("%.2fW", watt)
+            end
         end
 
         widget = bat.widget
         settings()
 
         -- notifications for low and critical states
         end
 
         widget = bat.widget
         settings()
 
         -- notifications for low and critical states
-        if bat_now.status == "Discharging" and notify == "on" and bat_now.perc ~= nil
-        then
+        if bat_now.status == "Discharging" and notify == "on" and bat_now.perc then
             local nperc = tonumber(bat_now.perc) or 100
             local nperc = tonumber(bat_now.perc) or 100
-            if nperc <= 5
-            then
+            if nperc <= 5 then
                 bat.id = naughty.notify({
                     preset = bat_notification_critical_preset,
                     replaces_id = bat.id,
                 }).id
                 bat.id = naughty.notify({
                     preset = bat_notification_critical_preset,
                     replaces_id = bat.id,
                 }).id
-            elseif nperc <= 15
-            then
+            elseif nperc <= 15 then
                 bat.id = naughty.notify({
                     preset = bat_notification_low_preset,
                     replaces_id = bat.id,
                 bat.id = naughty.notify({
                     preset = bat_notification_low_preset,
                     replaces_id = bat.id,
awesome window-manager configuration

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