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[etc/awesome.git] / widgets / bat.lua
diff --git a/widgets/bat.lua b/widgets/bat.lua
index f20034b5e17943f4294c7e47fca3b52e79722117..d84a5d881ab46cf2b1f8c97b18cf769f32c45439 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
@@ -13,125 +13,157 @@ local first_line   = require("lain.helpers").first_line
 local naughty      = require("naughty")
 local wibox        = require("wibox")
 
 local naughty      = require("naughty")
 local wibox        = require("wibox")
 
-local math         = { floor  = math.floor }
+local math         = { abs    = math.abs,
+                       floor  = math.floor,
+                       log10  = math.log10,
+                       min    = math.min }
 local string       = { format = string.format }
 local string       = { format = string.format }
-local tonumber     = tonumber
 
 
+local type         = type
+local tonumber     = tonumber
 local setmetatable = setmetatable
 
 -- Battery infos
 -- lain.widgets.bat
 
 local function worker(args)
 local setmetatable = setmetatable
 
 -- Battery infos
 -- 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 ac       = args.ac or "AC0"
-       local notify   = args.notify or "on"
-       local settings = args.settings or function() end
+    local bat       = {}
+    local args      = args or {}
+    local timeout   = args.timeout or 30
+    local batteries = args.batteries or (args.battery and {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.widget = wibox.widget.textbox('')
 
 
-       bat_notification_low_preset = {
+    bat_notification_low_preset = {
         title   = "Battery low",
         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"
-
-                       -- if rate = 0 or rate not defined skip the round
-                       if      not (rate_power and rate_power > 0) and
-                               not (rate_current and  rate_current > 0) and
-                               not (bat_now.status == "Full")
-                       then
-                               return
-                       end
-
-                       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)
-                        
-                        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
-
-               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 })
+        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"
+    }
+
+    bat_now = {
+        status    = "N/A",
+        ac_status = "N/A",
+        perc      = "N/A",
+        time      = "N/A",
+        watt      = "N/A"
+    }
+
+    bat_now.n_status = {}
+    bat_now.n_perc   = {}
+    for i = 1, #batteries do
+        bat_now.n_status[i] = "N/A"
+        bat_now.n_perc[i] = 0
+    end
+
+    function update()
+        local sum_rate_current = 0
+        local sum_rate_voltage = 0
+        local sum_rate_power   = 0
+        local sum_rate_energy  = 0
+        local sum_energy_now   = 0
+        local sum_energy_full  = 0
+        local pspath           = "/sys/class/power_supply/"
+
+        for i, battery in ipairs(batteries) do
+            local bstr    = pspath .. battery
+            local present = first_line(bstr .. "/present")
+
+            if tonumber(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.n_status[i] = first_line(bstr .. "/status") or "N/A"
+                bat_now.n_perc[i]   = energy_percentage or bat_now.n_perc[i]
+
+                sum_rate_current = sum_rate_current + (rate_current or 0)
+                sum_rate_voltage = sum_rate_voltage + (rate_voltage or 0)
+                sum_rate_power   = sum_rate_power + (rate_power or 0)
+                sum_rate_energy  = sum_rate_energy + (rate_power or (((rate_voltage or 0) * (rate_current or 0)) / 1e6))
+                sum_energy_now   = sum_energy_now + (energy_now or 0)
+                sum_energy_full  = sum_energy_full + (energy_full or 0)
+            end
+        end
+
+        bat_now.status = bat_now.n_status[1]
+        bat_now.ac_status = tonumber(first_line(string.format("%s%s/online", pspath, ac))) or "N/A"
+
+        if bat_now.status ~= "N/A" then
+            -- update {perc,time,watt} iff battery not full and rate > 0
+            if bat_now.status ~= "Full" and (sum_rate_power > 0 or sum_rate_current > 0) then
+                local rate_time = 0
+                local div = (sum_rate_power > 0 and sum_rate_power) or sum_rate_current
+
+                if bat_now.status == "Charging" then
+                    rate_time = (sum_energy_full - sum_energy_now) / div
+                else -- Discharging
+                    rate_time = sum_energy_now / div
+                end
+
+                if 0 < rate_time and rate_time < 0.01 then -- check for magnitude discrepancies (#199)
+                    rate_time_magnitude = math.abs(math.floor(math.log10(rate_time)))
+                    rate_time = rate_time * 10^(rate_time_magnitude - 2)
+                end
+
+                local hours   = math.floor(rate_time)
+                local minutes = math.floor((rate_time - hours) * 60)
+                bat_now.perc  = math.floor(math.min(100, (sum_energy_now / sum_energy_full) * 100))
+                bat_now.time  = string.format("%02d:%02d", hours, minutes)
+                bat_now.watt  = tonumber(string.format("%.2f", sum_rate_energy / 1e6))
+            elseif bat_now.status == "Full" then
+                bat_now.perc  = 100
+                bat_now.time  = "00:00"
+                bat_now.watt  = 0
+            end
+        end
+
+        widget = bat.widget
+        settings()
+
+        -- notifications for low and critical states
+        if notify == "on" and type(bat_now.perc) == "number" and bat_now.status == "Discharging" then
+            if bat_now.perc <= 5 then
+                bat.id = naughty.notify({
+                    preset = bat_notification_critical_preset,
+                    replaces_id = bat.id
+                }).id
+            elseif bat_now.perc <= 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({}, { __call = function(_, ...) return worker(...) end })
 end
 
 return setmetatable({}, { __call = function(_, ...) return worker(...) end })
awesome window-manager configuration

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