Better widgets

awesome-wm-widgets/battery-widget/README.md

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+# Battery widget
+
+Simple and easy-to-install widget for Awesome Window Manager.
+
+This widget consists of:
+
+ - an icon which shows the battery level:  
+ ![Battery Widget](./bat-wid-1.png)
+ - a pop-up window, which shows up when you hover over an icon:  
+ ![Battery Widget](./bat-wid-2.png)  
+ Alternatively you can use a tooltip (check the code):  
+ ![Battery Widget](./bat-wid-22.png)
+ - a pop-up warning message which appears on bottom right corner when battery level is less that 15% (you can get the image [here](https://vk.com/images/stickers/1933/512.png)):  
+ ![Battery Widget](./bat-wid-3.png) 
+
+Note that widget uses the Arc icon theme, so it should be [installed](https://github.com/horst3180/arc-icon-theme#installation) first under **/usr/share/icons/Arc/** folder.
+
+## Installation
+
+This widget reads the output of acpi tool.
+- install `acpi` and check the output:
+
+```bash
+$ sudo apt-get install acpi
+$ acpi
+Battery 0: Discharging, 66%, 02:34:06 remaining
+```
+
+Then refer to the [installation](https://github.com/streetturtle/awesome-wm-widgets#installation) section of the repo.

awesome-wm-widgets/battery-widget/battery.lua

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+-------------------------------------------------
+-- Battery Widget for Awesome Window Manager
+-- Shows the battery status using the ACPI tool
+-- More details could be found here:
+-- https://github.com/streetturtle/awesome-wm-widgets/tree/master/battery-widget
+
+-- @author Pavel Makhov
+-- @copyright 2017 Pavel Makhov
+-------------------------------------------------
+
+local awful = require("awful")
+local naughty = require("naughty")
+local watch = require("awful.widget.watch")
+local wibox = require("wibox")
+
+-- acpi sample outputs
+-- Battery 0: Discharging, 75%, 01:51:38 remaining
+-- Battery 0: Charging, 53%, 00:57:43 until charged
+
+local PATH_TO_ICONS = "/usr/share/icons/Arc/status/symbolic/"
+local HOME = os.getenv("HOME")
+
+local battery_widget = wibox.widget {
+    {
+        id = "icon",
+        widget = wibox.widget.imagebox,
+        resize = false
+    },
+    layout = wibox.container.margin(_, 0, 0, 3)
+}
+
+-- Popup with battery info
+-- One way of creating a pop-up notification - naughty.notify
+local notification
+local function show_battery_status()
+    awful.spawn.easy_async([[bash -c 'acpi']],
+        function(stdout, _, _, _)
+            notification = naughty.notify{
+                text =  stdout,
+                title = "Battery status",
+                timeout = 5, hover_timeout = 0.5,
+                width = 200,
+            }
+        end
+    )
+end
+
+-- Alternative to naughty.notify - tooltip. You can compare both and choose the preferred one
+--battery_popup = awful.tooltip({objects = {battery_widget}})
+
+-- To use colors from beautiful theme put
+-- following lines in rc.lua before require("battery"):
+-- beautiful.tooltip_fg = beautiful.fg_normal
+-- beautiful.tooltip_bg = beautiful.bg_normal
+
+local function show_battery_warning()
+    naughty.notify{
+        icon = HOME .. "/.config/awesome/nichosi.png",
+        icon_size=100,
+        text = "Huston, we have a problem",
+        title = "Battery is dying",
+        timeout = 5, hover_timeout = 0.5,
+        position = "bottom_right",
+        bg = "#F06060",
+        fg = "#EEE9EF",
+        width = 300,
+    }
+end
+
+local last_battery_check = os.time()
+
+watch("acpi -i", 10,
+    function(widget, stdout, stderr, exitreason, exitcode)
+        local batteryType
+
+        local battery_info = {}
+        local capacities = {}
+        for s in stdout:gmatch("[^\r\n]+") do
+            local status, charge_str, time = string.match(s, '.+: (%a+), (%d?%d?%d)%%,?.*')
+            if status ~= nil then
+                table.insert(battery_info, {status = status, charge = tonumber(charge_str)})
+            else
+                local cap_str = string.match(s, '.+:.+last full capacity (%d+)')
+                table.insert(capacities, tonumber(cap_str))
+            end
+        end
+
+        local capacity = 0
+        for i, cap in ipairs(capacities) do
+            capacity = capacity + cap
+        end
+
+        local charge = 0
+        local status
+        for i, batt in ipairs(battery_info) do
+            if batt.charge >= charge then
+                status = batt.status -- use most charged battery status
+                -- this is arbitrary, and maybe another metric should be used
+            end
+
+            charge = charge + batt.charge * capacities[i]
+        end
+        charge = charge / capacity
+
+        if (charge >= 0 and charge < 15) then
+            batteryType = "battery-empty%s-symbolic"
+            if status ~= 'Charging' and os.difftime(os.time(), last_battery_check) > 300 then
+                -- if 5 minutes have elapsed since the last warning
+                last_battery_check = time()
+
+                show_battery_warning()
+            end
+        elseif (charge >= 15 and charge < 40) then batteryType = "battery-caution%s-symbolic"
+        elseif (charge >= 40 and charge < 60) then batteryType = "battery-low%s-symbolic"
+        elseif (charge >= 60 and charge < 80) then batteryType = "battery-good%s-symbolic"
+        elseif (charge >= 80 and charge <= 100) then batteryType = "battery-full%s-symbolic"
+        end
+
+        if status == 'Charging' then
+            batteryType = string.format(batteryType, '-charging')
+        else
+            batteryType = string.format(batteryType, '')
+        end
+
+        widget.icon:set_image(PATH_TO_ICONS .. batteryType .. ".svg")
+
+        -- Update popup text
+        -- battery_popup.text = string.gsub(stdout, "\n$", "")
+    end,
+    battery_widget)
+
+battery_widget:connect_signal("mouse::enter", function() show_battery_status() end)
+battery_widget:connect_signal("mouse::leave", function() naughty.destroy(notification) end)
+
+return battery_widget