1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
-------------------------------------------------
-- Weather Widget based on the OpenWeatherMap
-- https://openweathermap.org/
--
-- @author Pavel Makhov
-- @copyright 2018 Pavel Makhov
-------------------------------------------------
local socket = require("socket")
local http = require("socket.http")
local ltn12 = require("ltn12")
local json = require("json")
local naughty = require("naughty")
local wibox = require("wibox")
local gears = require("gears")
local path_to_icons = "/usr/share/icons/Arc/status/symbolic/"
local weather_widget = {}
local function worker(args)
local args = args or {}
local font = args.font or 'Play 9'
local city = args.city or 'Montreal,ca'
local api_key = args.api_key or naughty.notify{preset = naughty.config.presets.critical, text = 'OpenweatherMap API key is not set'}
local units = args.units or 'metric'
local both_units_widget = args.both_units_widget or false
local both_units_popup = args.both_units_popup or false
local position = args.notification_position or "top_right"
local weather_api_url = (
'https://api.openweathermap.org/data/2.5/weather'
.. '?q=' .. city
.. '&appid=' .. api_key
.. '&units=' .. units
)
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 = font,
widget = wibox.widget.textbox,
}
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"
}
--- Return wind direction as a string.
local 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
-- Convert degrees Celsius to Fahrenheit
local function celsius_to_fahrenheit(c)
return c*9/5+32
end
-- Convert degrees Fahrenheit to Celsius
local function fahrenheit_to_celsius(f)
return (f-32)*5/9
end
local weather_timer = gears.timer({ timeout = 60 })
local resp
local function gen_temperature_str(temp, fmt_str, show_other_units)
local temp_str = string.format(fmt_str, temp)
local s = temp_str .. '°' .. (units == 'metric' and 'C' or 'F')
if (show_other_units) then
local temp_conv, units_conv
if (units == 'metric') then
temp_conv = celsius_to_fahrenheit(temp)
units_conv = 'F'
else
temp_conv = fahrenheit_to_celsius(temp)
units_conv = 'C'
end
local temp_conv_str = string.format(fmt_str, temp_conv)
s = s .. ' ' .. '('.. temp_conv_str .. '°' .. units_conv .. ')'
end
return s
end
local function error_display(resp_json)
weather_timer.timeout = math.min(15 * 60, weather_timer.timeout * 2)
weather_timer:again()
local err_resp = json.decode(resp_json)
naughty.notify{
title = 'Weather Widget Error',
text = err_resp.message,
preset = naughty.config.presets.critical,
}
end
weather_timer:connect_signal("timeout", function ()
local resp_json = {}
local res, status = http.request{
url=weather_api_url,
sink=ltn12.sink.table(resp_json),
-- ref:
-- http://w3.impa.br/~diego/software/luasocket/old/luasocket-2.0/http.html
create=function()
-- ref: https://stackoverflow.com/a/6021774/595220
local req_sock = socket.tcp()
-- 't' — overall timeout
req_sock:settimeout(0.2, 't')
-- 'b' — block timeout
req_sock:settimeout(0.001, 'b')
return req_sock
end
}
if (resp_json ~= nil) then
resp_json = table.concat(resp_json)
end
if (status ~= 200 and resp_json ~= nil and resp_json ~= '') then
if (not pcall(error_display, resp_json)) then
naughty.notify{
title = 'Weather Widget Error',
text = 'Cannot parse answer',
preset = naughty.config.presets.critical,
}
end
elseif (resp_json ~= nil and resp_json ~= '') then
resp = json.decode(resp_json)
icon_widget.image = path_to_icons .. icon_map[resp.weather[1].icon]
temp_widget:set_text(gen_temperature_str(resp.main.temp, '%.0f', both_units_widget))
weather_timer.timeout = 60
weather_timer:again()
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> ' .. gen_temperature_str(resp.main.temp, '%.1f',
both_units_popup) .. '<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,
position = position,
screen = mouse.screen,
width = (both_units_popup == true and 210 or 200)
}
end)
weather_widget:connect_signal("mouse::leave", function()
naughty.destroy(notification)
end)
return weather_widget
end
return setmetatable(weather_widget, { __call = function(_, ...)
return worker(...)
end })
|
