bat: #177 fix Watt computation; make AC state available #178

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

diff --git a/widgets/bat.lua b/widgets/bat.lua
index a064e304054047a110ed16b5cfd77e9fe5ba419f..9740bbed1e75ee0b0655b3295e73eeb65937a9dd 100644 (file)
--- a/widgets/bat.lua
+++ b/widgets/bat.lua
@@ -21,42 +21,62 @@ 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 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",
-            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 present = first_line(bstr .. "/present")
 
         if present == "1"
         then
-            local rate  = first_line(bstr .. "/power_now") or
-                          first_line(bstr .. "/current_now")
+            local rate     = first_line(bstr .. "/power_now")
+
+            local rate_alt = first_line(bstr .. "/current_now")
 
-            local ratev = first_line(bstr .. "/voltage_now")
+            local ratev    = first_line(bstr .. "/voltage_now")
 
-            local rem   = first_line(bstr .. "/energy_now") or
-                          first_line(bstr .. "/charge_now")
+            local rem      = first_line(bstr .. "/energy_now") or
+                             first_line(bstr .. "/charge_now")
 
-            local tot   = first_line(bstr .. "/energy_full") or
-                          first_line(bstr .. "/charge_full")
+            local tot      = first_line(bstr .. "/energy_full") or
+                             first_line(bstr .. "/charge_full")
 
             bat_now.status = first_line(bstr .. "/status") or "N/A"
+            bat_now.ac     = first_line(string.format("/sys/class/power_supply/%s/online", ac)) or "N/A"
 
             rate  = tonumber(rate)
             ratev = tonumber(ratev)
@@ -80,7 +100,8 @@ local function worker(args)
 
             bat_now.time = string.format("%02d:%02d", hrs, min)
 
-            local perc = (rem / tot) * 100
+            local perc = tonumber(first_line(bstr .. "/capacity")) or math.floor((rem / tot) * 100)
+
             if perc <= 100 then
                 bat_now.perc = string.format("%d", perc)
             elseif perc > 100 then
@@ -89,50 +110,42 @@ local function worker(args)
                 bat_now.perc = "0"
             end
 
-            if rate ~= nil and ratev ~= nil then
+            if rate and ratev then
                 bat_now.watt = string.format("%.2fW", (rate * ratev) / 1e12)
+            elseif rate_alt then
+                bat_now.watt = string.format("%.2fW", rate_alt)
             else
-                bat_not.watt = "N/A"
+                bat_now.watt = "N/A"
             end
 
-            -- notifications for low and critical states
-            if bat_now.status == "Discharging"
-            then
-                if tonumber(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 tonumber(bat_now.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
-            end
         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("bat", timeout, update)
+    newtimer(battery, timeout, update)
 
-    return bat.widget
+    return setmetatable(bat, { __index = bat.widget })
 end
 
-return setmetatable(bat, { __call = function(_, ...) return worker(...) end })
+return setmetatable({}, { __call = function(_, ...) return worker(...) end })