Better widgets

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

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+# Weather widget
+
+![Weather Widget](./weather-widget.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
+
+ - install lua socket
+```bash
+$ sudo apt-get install lua-socket
+```
+
+ - download json parser for lua: https://github.com/rxi/json.lua
+ - get Open Weather Map app id here: https://openweathermap.org/appid
+
+You can read how it works in more details [here](http://pavelmakhov.com/2017/02/weather-widget-for-awesome-wm)

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

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+-------------------------------------------------
+-- Weather Widget based on the OpenWeatherMap
+-- https://openweathermap.org/
+--
+-- @author Pavel Makhov
+-- @copyright 2018 Pavel Makhov
+-------------------------------------------------
+
+local http = require("socket.http")
+local json = require("json")
+local naughty = require("naughty")
+local wibox = require("wibox")
+
+local city = os.getenv("AWW_WEATHER_CITY") or "Montreal,ca"
+local open_map_key = os.getenv("AWW_WEATHER_API_KEY") or 'c3d7320b359da4e48c2d682a04076576'
+local path_to_icons = "/usr/share/icons/Arc/status/symbolic/"
+
+local icon_widget = wibox.widget {
+    {
+        id = "icon",
+        resize = false,
+        widget = wibox.widget.imagebox,
+    },
+    layout = wibox.container.margin(_ , 0, 0, 3),
+    set_image = function(self, path)
+        self.icon.image = path
+    end,
+}
+
+local temp_widget = wibox.widget{
+    font = "Play 9",
+    widget = wibox.widget.textbox,
+}
+
+local weather_widget = wibox.widget {
+    icon_widget,
+    temp_widget,
+    layout = wibox.layout.fixed.horizontal,
+}
+
+--- Maps openWeatherMap icons to Arc icons
+local icon_map = {
+    ["01d"] = "weather-clear-symbolic.svg",
+    ["02d"] = "weather-few-clouds-symbolic.svg",
+    ["03d"] = "weather-clouds-symbolic.svg",
+    ["04d"] = "weather-overcast-symbolic.svg",
+    ["09d"] = "weather-showers-scattered-symbolic.svg",
+    ["10d"] = "weather-showers-symbolic.svg",
+    ["11d"] = "weather-storm-symbolic.svg",
+    ["13d"] = "weather-snow-symbolic.svg",
+    ["50d"] = "weather-fog-symbolic.svg",
+    ["01n"] = "weather-clear-night-symbolic.svg",
+    ["02n"] = "weather-few-clouds-night-symbolic.svg",
+    ["03n"] = "weather-clouds-night-symbolic.svg",
+    ["04n"] = "weather-overcast-symbolic.svg",
+    ["09n"] = "weather-showers-scattered-symbolic.svg",
+    ["10n"] = "weather-showers-symbolic.svg",
+    ["11n"] = "weather-storm-symbolic.svg",
+    ["13n"] = "weather-snow-symbolic.svg",
+    ["50n"] = "weather-fog-symbolic.svg"
+}
+
+--- handy function to convert temperature from Kelvin to Celcius
+function to_celcius(kelvin)
+    return math.floor(tonumber(kelvin) - 273.15)
+end
+
+--- Return wind direction as a string.
+function to_direction(degrees)
+    -- Ref: https://www.campbellsci.eu/blog/convert-wind-directions
+    if degrees == nil then
+        return "Unknown dir"
+    end
+    local directions = {
+        "N",
+        "NNE",
+        "NE",
+        "ENE",
+        "E",
+        "ESE",
+        "SE",
+        "SSE",
+        "S",
+        "SSW",
+        "SW",
+        "WSW",
+        "W",
+        "WNW",
+        "NW",
+        "NNW",
+        "N",
+    }
+    return directions[math.floor((degrees % 360) / 22.5) + 1]
+end
+
+local weather_timer = timer({ timeout = 60 })
+local resp
+
+weather_timer:connect_signal("timeout", function ()
+    local resp_json = http.request("https://api.openweathermap.org/data/2.5/weather?q=" .. city .."&appid=" .. open_map_key)
+    if (resp_json ~= nil) then
+        resp = json.decode(resp_json)
+        icon_widget.image = path_to_icons .. icon_map[resp.weather[1].icon]
+        temp_widget:set_text(to_celcius(resp.main.temp) .. "°C")
+    end
+end)
+weather_timer:start()
+weather_timer:emit_signal("timeout")
+
+--- Notification with weather information. Popups when mouse hovers over the icon
+local notification
+weather_widget:connect_signal("mouse::enter", function()
+    notification = naughty.notify{
+        icon = path_to_icons .. icon_map[resp.weather[1].icon],
+        icon_size=20,
+        text =
+            '<big>' .. resp.weather[1].main .. ' (' .. resp.weather[1].description .. ')</big><br>' ..
+            '<b>Humidity:</b> ' .. resp.main.humidity .. '%<br>' ..
+            '<b>Temperature: </b>' .. to_celcius(resp.main.temp) .. '<br>' ..
+            '<b>Pressure: </b>' .. resp.main.pressure .. 'hPa<br>' ..
+            '<b>Clouds: </b>' .. resp.clouds.all .. '%<br>' ..
+            '<b>Wind: </b>' .. resp.wind.speed .. 'm/s (' .. to_direction(resp.wind.deg) .. ')',
+        timeout = 5, hover_timeout = 10,
+        width = 200
+    }
+end)
+
+weather_widget:connect_signal("mouse::leave", function()
+    naughty.destroy(notification)
+end)
+
+return weather_widget