Merge pull request #1 from copycat-killer/master

[etc/awesome.git] / widgets / bat.lua

diff --git a/widgets/bat.lua b/widgets/bat.lua
index 080c43ff098b2e130730af4c5572de4cfa6d481c..f63b1fa2700644e1ce7e695f7cab2c2bc56daee5 100644 (file)
--- a/widgets/bat.lua
+++ b/widgets/bat.lua
@@ -13,10 +13,14 @@ local first_line   = require("lain.helpers").first_line
 local naughty      = require("naughty")
 local wibox        = require("wibox")
 
-local math         = { floor  = math.floor, min = math.min }
+local math         = { abs    = math.abs,
+                       floor  = math.floor,
+                       log10  = math.log10,
+                       min    = math.min }
 local string       = { format = string.format }
-local tonumber     = tonumber
 
+local type         = type
+local tonumber     = tonumber
 local setmetatable = setmetatable
 
 -- Battery infos
@@ -58,18 +62,20 @@ local function worker(args)
     }
 
     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_energy_now        = 0
-        local sum_energy_full       = 0
-        local sum_energy_percentage = 0
-        local pspath                = "/sys/class/power_supply/"
+    function bat.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
@@ -77,9 +83,9 @@ local function worker(args)
 
             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"))
+                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
@@ -93,13 +99,14 @@ local function worker(args)
                                           math.floor((energy_now / energy_full) * 100)
 
                 bat_now.n_status[i] = first_line(bstr .. "/status") or "N/A"
-
-                sum_rate_current      = sum_rate_current + (rate_current or 0)
-                sum_rate_voltage      = sum_rate_voltage + rate_voltage
-                sum_rate_power        = sum_rate_power + (rate_power or ((rate_voltage * rate_current) / 1e6))
-                sum_energy_now        = sum_energy_now + (energy_now or 0)
-                sum_energy_full       = sum_energy_full + energy_full
-                sum_energy_percentage = sum_energy_percentage + energy_percentage
+                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
 
@@ -108,22 +115,30 @@ local function worker(args)
 
         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_current > 0 or sum_rate_power > 0) then
+            if bat_now.status ~= "Full" and (sum_rate_power > 0 or sum_rate_current > 0) then
                 local rate_time = 0
-                local sum_rpc   = sum_rate_power or sum_rate_current
-                if sum_rpc >= 1e8 then sum_rpc = sum_rpc / 10 end
+                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) / sum_rpc
-                elseif bat_now.status == "Discharging" then
-                    rate_time = sum_energy_now / sum_rpc
+                    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  = tonumber(string.format("%d", math.min(100, sum_energy_percentage / #batteries)))
+                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_power / 1e6))
+                bat_now.watt  = tonumber(string.format("%.2f", sum_rate_energy / 1e6))
+            elseif bat_now.status ~= "Full" and sum_rate_power == 0 and bat_now.ac_status == 1 then
+                                                               bat_now.perc  = math.floor(math.min(100, (sum_energy_now / sum_energy_full) * 100))
+                                                               bat_now.time  = "00:00"
+                                                               bat_now.watt  = 0
             elseif bat_now.status == "Full" then
                 bat_now.perc  = 100
                 bat_now.time  = "00:00"
@@ -135,7 +150,7 @@ local function worker(args)
         settings()
 
         -- notifications for low and critical states
-        if notify == "on" and bat_now.perc and bat_now.status == "Discharging" then
+        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,
@@ -150,7 +165,7 @@ local function worker(args)
         end
     end
 
-    newtimer(battery, timeout, update)
+    newtimer(battery, timeout, bat.update)
 
     return setmetatable(bat, { __index = bat.widget })
 end