Add battery widget

battery.lua

@@ -0,0 +1,83 @@
+local gears = require("gears")
+local vicious = require("vicious")
+local wibox = require("wibox")
+
+local icon_full
+local icon_full_charg
+local icon_good
+local icon_good_charg
+local icon_medium
+local icon_medium_charg
+local icon_low
+local icon_low_charg
+local icon_empty
+local icon_empty_charg
+
+
+-- Create layout with widgets
+local widget = wibox.widget {
+   {
+      id = "icon",
+      widget = wibox.widget.imagebox,
+      resize = true
+   },
+   {
+      id = "text",
+      widget = wibox.widget.textbox,
+      resize = true
+   },
+   layout = wibox.layout.align.horizontal
+}
+vicious.register(widget.text, vicious.widgets.bat, "$2%  $3h", 61, "BAT0")
+
+-- Widget function that is available from the outside.
+function widget.set_icons(full, full_charg, good, good_charg, medium, medium_charg, low, low_charg, empty, empty_charg)
+    icon_full = full
+    icon_full_charg = full_charg
+    icon_good = good
+    icon_good_charg = good_charg
+    icon_medium = medium
+    icon_medium_charg = medium_charg
+    icon_low = low
+    icon_low_charg = low_charg
+    icon_empty = empty
+    icon_empty_charg = empty_charg
+end
+
+gears.timer {
+    timeout = 5,
+    call_now = true,
+    autostart = true,
+    callback = function() 
+        state = vicious.call(vicious.widgets.bat, "$1", "BAT0")
+        percent_string = vicious.call(vicious.widgets.bat, "$2", "BAT0")
+        percent = tonumber(percent_string)
+        if state:match("-") then    -- discharging
+            if percent >= 90 then
+                widget.icon:set_image(icon_full)
+            elseif percent >= 60 then
+                widget.icon:set_image(icon_good)
+            elseif percent >= 30 then
+                widget.icon:set_image(icon_medium)
+            elseif percent >= 10 then
+                widget.icon:set_image(icon_low)
+            else 
+                widget.icon:set_image(icon_empty)
+            end
+        else    -- charging
+            if percent >= 90 then
+                widget.icon:set_image(icon_full_charg)
+            elseif percent >= 60 then
+                widget.icon:set_image(icon_good_charg)
+            elseif percent >= 30 then
+                widget.icon:set_image(icon_medium_charg)
+            elseif percent >= 10 then
+                widget.icon:set_image(icon_low_charg)
+            else 
+                widget.icon:set_image(icon_empty_charg)
+            end
+        end
+    end
+}
+
+return widget