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inkycal/modules/inkycal_weather.py
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#!/usr/bin/python3
# -*- coding: utf-8 -*-
"""
Weather module for Inky-Calendar software.
Copyright by aceisace
"""
from inkycal.modules.template import inkycal_module
from inkycal.custom import *
import math, decimal
import arrow
from locale import getdefaultlocale as sys_locale
try:
from pyowm.owm import OWM
except ImportError:
print('pyowm is not installed! Please install with:')
print('pip3 install pyowm')
filename = os.path.basename(__file__).split('.py')[0]
logger = logging.getLogger(filename)
class Weather(inkycal_module):
"""Weather class
parses weather details from openweathermap
"""
name = "Weather (openweathermap) - Get weather forecasts from openweathermap"
requires = {
"api_key" : {
"label":"Please enter openweathermap api-key. You can create one for free on openweathermap",
},
"location": {
"label":"Please enter your location in the following format: City, Country-Code. "+
"You can also enter the location ID found in the url "+
"e.g. https://openweathermap.org/city/4893171 -> ID is 4893171"
}
}
optional = {
"round_temperature": {
"label":"Round temperature to the nearest degree?",
"options": [True, False],
},
"round_windspeed": {
"label":"Round windspeed?",
"options": [True, False],
},
"forecast_interval": {
"label":"Please select the forecast interval",
"options": ["daily", "hourly"],
},
"units": {
"label": "Which units should be used?",
"options": ["metric", "imperial"],
},
"hour_format": {
"label": "Which hour format do you prefer?",
"options": [24, 12],
},
"use_beaufort": {
"label": "Use beaufort scale for windspeed?",
"options": [True, False],
},
}
def __init__(self, config):
"""Initialize inkycal_weather module"""
super().__init__(config)
config = config['config']
# Check if all required parameters are present
for param in self.requires:
if not param in config:
raise Exception(f'config is missing {param}')
# required parameters
self.api_key = config['api_key']
self.location = config['location']
# optional parameters
self.round_temperature = config['round_temperature']
self.round_windspeed = config['round_windspeed']
self.forecast_interval = config['forecast_interval']
self.units = config['units']
self.hour_format = int(config['hour_format'])
self.use_beaufort = config['use_beaufort']
# additional configuration
self.owm = OWM(self.api_key).weather_manager()
self.timezone = get_system_tz()
self.locale = config['language']
self.weatherfont = ImageFont.truetype(
fonts['weathericons-regular-webfont'], size = self.fontsize)
# give an OK message
print(f"{filename} loaded")
def generate_image(self):
"""Generate image for this module"""
# Define new image size with respect to padding
im_width = int(self.width - (2 * self.padding_left))
im_height = int(self.height - (2 * self.padding_top))
im_size = im_width, im_height
logger.info(f'Image size: {im_size}')
# Create an image for black pixels and one for coloured pixels
im_black = Image.new('RGB', size = im_size, color = 'white')
im_colour = Image.new('RGB', size = im_size, color = 'white')
# Check if internet is available
if internet_available() == True:
logger.info('Connection test passed')
else:
logger.exception('Network could not be reached :(')
raise
def get_moon_phase():
"""Calculate the current (approximate) moon phase"""
dec = decimal.Decimal
diff = now - arrow.get(2001, 1, 1)
days = dec(diff.days) + (dec(diff.seconds) / dec(86400))
lunations = dec("0.20439731") + (days * dec("0.03386319269"))
position = lunations % dec(1)
index = math.floor((position * dec(8)) + dec("0.5"))
return {0: '\uf095',1: '\uf099',2: '\uf09c',3: '\uf0a0',
4: '\uf0a3',5: '\uf0a7',6: '\uf0aa',7: '\uf0ae' }[int(index) & 7]
def is_negative(temp):
"""Check if temp is below freezing point of water (0°C/30°F)
returns True if temp below freezing point, else False"""
answer = False
if temp_unit == 'celsius' and round(float(temp.split('°')[0])) <= 0:
answer = True
elif temp_unit == 'fahrenheit' and round(float(temp.split('°')[0])) <= 0:
answer = True
return answer
# Lookup-table for weather icons and weather codes
weathericons = {
'01d': '\uf00d', '02d': '\uf002', '03d': '\uf013',
'04d': '\uf012', '09d': '\uf01a', '10d': '\uf019',
'11d': '\uf01e', '13d': '\uf01b', '50d': '\uf014',
'01n': '\uf02e', '02n': '\uf013', '03n': '\uf013',
'04n': '\uf013', '09n': '\uf037', '10n': '\uf036',
'11n': '\uf03b', '13n': '\uf038', '50n': '\uf023'
}
def draw_icon(image, xy, box_size, icon, rotation = None):
"""Custom function to add icons of weather font on image
image = on which image should the text be added?
xy = xy-coordinates as tuple -> (x,y)
box_size = size of text-box -> (width,height)
icon = icon-unicode, looks this up in weathericons dictionary
"""
icon_size_correction = {
'\uf00d': 10/60, '\uf02e': 51/150, '\uf019': 21/60,
'\uf01b': 21/60, '\uf0b5': 51/150, '\uf050': 25/60,
'\uf013': 51/150, '\uf002': 0, '\uf031': 29/100,
'\uf015': 21/60, '\uf01e': 52/150, '\uf056': 51/150,
'\uf053': 14/150, '\uf012': 51/150, '\uf01a': 51/150,
'\uf014': 51/150, '\uf037': 42/150, '\uf036': 42/150,
'\uf03b': 42/150, '\uf038': 42/150, '\uf023': 35/150,
'\uf07a': 35/150, '\uf051': 18/150, '\uf052': 18/150,
'\uf0aa': 0, '\uf095': 0, '\uf099': 0, '\uf09c': 0,
'\uf0a0': 0, '\uf0a3': 0, '\uf0a7': 0, '\uf0aa': 0,
'\uf0ae': 0
}
x,y = xy
box_width, box_height = box_size
text = icon
font = self.weatherfont
# Increase fontsize to fit specified height and width of text box
size = 8
font = ImageFont.truetype(font.path, size)
text_width, text_height = font.getsize(text)
while (text_width < int(box_width * 0.9) and
text_height < int(box_height * 0.9)):
size += 1
font = ImageFont.truetype(font.path, size)
text_width, text_height = font.getsize(text)
text_width, text_height = font.getsize(text)
# Align text to desired position
x = int((box_width / 2) - (text_width / 2))
y = int((box_height / 2) - (text_height / 2) - (icon_size_correction[icon]*size)/2)
# Draw the text in the text-box
draw = ImageDraw.Draw(image)
space = Image.new('RGBA', (box_width, box_height))
ImageDraw.Draw(space).text((x, y), text, fill='black', font=font)
if rotation != None:
space.rotate(rotation, expand = True)
# Update only region with text (add text with transparent background)
image.paste(space, xy, space)
# column1 column2 column3 column4 column5 column6 column7
# |----------|----------|----------|----------|----------|----------|----------|
# | time | temperat.| moonphase| forecast1| forecast2| forecast3| forecast4|
# | current |----------|----------|----------|----------|----------|----------|
# | weather | humidity | sunrise | icon1 | icon2 | icon3 | icon4 |
# | icon |----------|----------|----------|----------|----------|----------|
# | | windspeed| sunset | temperat.| temperat.| temperat.| temperat.|
# |----------|----------|----------|----------|----------|----------|----------|
# Calculate size rows and columns
col_width = im_width // 7
# Ratio width height
image_ratio = im_width / im_height
if image_ratio >= 4:
row_height = im_height // 3
else:
logger.info('Please consider decreasing the height.')
row_height = int( (im_height* (1-im_height/im_width)) / 3 )
logger.debug(f"row_height: {row_height} | col_width: {col_width}")
# Calculate spacings for better centering
spacing_top = int( (im_width % col_width) / 2 )
spacing_left = int( (im_height % row_height) / 2 )
# Define sizes for weather icons
icon_small = int(col_width / 3)
icon_medium = icon_small * 2
icon_large = icon_small * 3
# Calculate the x-axis position of each col
col1 = spacing_top
col2 = col1 + col_width
col3 = col2 + col_width
col4 = col3 + col_width
col5 = col4 + col_width
col6 = col5 + col_width
col7 = col6 + col_width
# Calculate the y-axis position of each row
line_gap = int((im_height - spacing_top - 3*row_height) // 4)
row1 = line_gap
row2 = row1 + line_gap + row_height
row3 = row2+ line_gap + row_height
# Draw lines on each row and border
############################################################################
## draw = ImageDraw.Draw(im_black)
## draw.line((0, 0, im_width, 0), fill='red')
## draw.line((0, im_height-1, im_width, im_height-1), fill='red')
## draw.line((0, row1, im_width, row1), fill='black')
## draw.line((0, row1+row_height, im_width, row1+row_height), fill='black')
## draw.line((0, row2, im_width, row2), fill='black')
## draw.line((0, row2+row_height, im_width, row2+row_height), fill='black')
## draw.line((0, row3, im_width, row3), fill='black')
## draw.line((0, row3+row_height, im_width, row3+row_height), fill='black')
############################################################################
# Positions for current weather details
weather_icon_pos = (col1, 0)
temperature_icon_pos = (col2, row1)
temperature_pos = (col2+icon_small, row1)
humidity_icon_pos = (col2, row2)
humidity_pos = (col2+icon_small, row2)
windspeed_icon_pos = (col2, row3)
windspeed_pos = (col2+icon_small, row3)
# Positions for sunrise, sunset, moonphase
moonphase_pos = (col3, row1)
sunrise_icon_pos = (col3, row2)
sunrise_time_pos = (col3+icon_small, row2)
sunset_icon_pos = (col3, row3)
sunset_time_pos = (col3+ icon_small, row3)
# Positions for forecast 1
stamp_fc1 = (col4, row1)
icon_fc1 = (col4, row1+row_height)
temp_fc1 = (col4, row3)
# Positions for forecast 2
stamp_fc2 = (col5, row1)
icon_fc2 = (col5, row1+row_height)
temp_fc2 = (col5, row3)
# Positions for forecast 3
stamp_fc3 = (col6, row1)
icon_fc3 = (col6, row1+row_height)
temp_fc3 = (col6, row3)
# Positions for forecast 4
stamp_fc4 = (col7, row1)
icon_fc4 = (col7, row1+row_height)
temp_fc4 = (col7, row3)
# Create current-weather and weather-forecast objects
if self.location.isdigit():
logging.debug('looking up location by ID')
weather = self.owm.weather_at_id(int(self.location)).weather
forecast = self.owm.forecast_at_id(int(self.location), '3h')
else:
logging.debug('looking up location by string')
weather = self.owm.weather_at_place(self.location).weather
forecast = self.owm.forecast_at_place(self.location, '3h')
# Set decimals
dec_temp = None if self.round_temperature == True else 1
dec_wind = None if self.round_windspeed == True else 1
# Set correct temperature units
if self.units == 'metric':
temp_unit = 'celsius'
elif self.units == 'imperial':
temp_unit = 'fahrenheit'
logging.debug(f'temperature unit: {temp_unit}')
logging.debug(f'decimals temperature: {dec_temp} | decimals wind: {dec_wind}')
# Get current time
now = arrow.utcnow()
if self.forecast_interval == 'hourly':
logger.debug("getting hourly forecasts")
# Forecasts are provided for every 3rd full hour
# find out how many hours there are until the next 3rd full hour
if (now.hour % 3) != 0:
hour_gap = 3 - (now.hour % 3)
else:
hour_gap = 3
# Create timings for hourly forcasts
forecast_timings = [now.shift(hours = + hour_gap + _).floor('hour')
for _ in range(0,12,3)]
# Create forecast objects for given timings
forecasts = [forecast.get_weather_at(forecast_time.datetime) for
forecast_time in forecast_timings]
# Add forecast-data to fc_data dictionary
fc_data = {}
for forecast in forecasts:
temp = '{}°'.format(round(
forecast.temperature(unit=temp_unit)['temp'], ndigits=dec_temp))
icon = forecast.weather_icon_name
fc_data['fc'+str(forecasts.index(forecast)+1)] = {
'temp':temp,
'icon':icon,
'stamp': forecast_timings[forecasts.index(forecast)].to(
get_system_tz()).format('H.00' if self.hour_format == 24 else 'h a')
}
elif self.forecast_interval == 'daily':
logger.debug("getting daily forecasts")
def calculate_forecast(days_from_today):
"""Get temperature range and most frequent icon code for forecast
days_from_today should be int from 1-4: e.g. 2 -> 2 days from today
"""
# Create a list containing time-objects for every 3rd hour of the day
time_range = list(arrow.Arrow.range('hour',
now.shift(days=days_from_today).floor('day'),
now.shift(days=days_from_today).ceil('day')
))[::3]
# Get forecasts for each time-object
forecasts = [forecast.get_weather_at(_.datetime) for _ in time_range]
# Get all temperatures for this day
daily_temp = [round(_.temperature(unit=temp_unit)['temp'],
ndigits=dec_temp) for _ in forecasts]
# Calculate min. and max. temp for this day
temp_range = f'{max(daily_temp)}°/{min(daily_temp)}°'
# Get all weather icon codes for this day
daily_icons = [_.weather_icon_name for _ in forecasts]
# Find most common element from all weather icon codes
status = max(set(daily_icons), key=daily_icons.count)
weekday = now.shift(days=days_from_today).format('ddd', locale=
self.locale)
return {'temp':temp_range, 'icon':status, 'stamp': weekday}
forecasts = [calculate_forecast(days) for days in range (1,5)]
fc_data = {}
for forecast in forecasts:
fc_data['fc'+str(forecasts.index(forecast)+1)] = {
'temp':forecast['temp'],
'icon':forecast['icon'],
'stamp': forecast['stamp']
}
for key,val in fc_data.items():
logger.debug((key,val))
# Get some current weather details
temperature = '{}°'.format(round(
weather.temperature(unit=temp_unit)['temp'], ndigits=dec_temp))
weather_icon = weather.weather_icon_name
humidity = str(weather.humidity)
sunrise_raw = arrow.get(weather.sunrise_time()).to(self.timezone)
sunset_raw = arrow.get(weather.sunset_time()).to(self.timezone)
logger.debug(f'weather_icon: {weather_icon}')
if self.hour_format == 12:
logger.debug('using 12 hour format for sunrise/sunset')
sunrise = sunrise_raw.format('h:mm a')
sunset = sunset_raw.format('h:mm a')
elif self.hour_format == 24:
logger.debug('using 24 hour format for sunrise/sunset')
sunrise = sunrise_raw.format('H:mm')
sunset = sunset_raw.format('H:mm')
# Format the windspeed to user preference
if self.use_beaufort == True:
logger.debug("using beaufort for wind")
wind = str(weather.wind(unit='beaufort')['speed'])
elif self.use_beaufort == False:
if self.units == 'metric':
logging.debug('getting windspeed in metric unit')
wind = str(weather.wind(unit='meters_sec')['speed']) + 'm/s'
elif self.units == 'imperial':
logging.debug('getting windspeed in imperial unit')
wind = str(weather.wind(unit='miles_hour')['speed']) + 'miles/h'
dec = decimal.Decimal
moonphase = get_moon_phase()
# Fill weather details in col 1 (current weather icon)
draw_icon(im_colour, weather_icon_pos, (col_width, im_height),
weathericons[weather_icon])
# Fill weather details in col 2 (temp, humidity, wind)
draw_icon(im_colour, temperature_icon_pos, (icon_small, row_height),
'\uf053')
if is_negative(temperature):
write(im_black, temperature_pos, (col_width-icon_small, row_height),
temperature, font = self.font)
else:
write(im_black, temperature_pos, (col_width-icon_small, row_height),
temperature, font = self.font)
draw_icon(im_colour, humidity_icon_pos, (icon_small, row_height),
'\uf07a')
write(im_black, humidity_pos, (col_width-icon_small, row_height),
humidity+'%', font = self.font)
draw_icon(im_colour, windspeed_icon_pos, (icon_small, icon_small),
'\uf050')
write(im_black, windspeed_pos, (col_width-icon_small, row_height),
wind, font=self.font)
# Fill weather details in col 3 (moonphase, sunrise, sunset)
draw_icon(im_colour, moonphase_pos, (col_width, row_height), moonphase)
draw_icon(im_colour, sunrise_icon_pos, (icon_small, icon_small), '\uf051')
write(im_black, sunrise_time_pos, (col_width-icon_small, row_height),
sunrise, font = self.font)
draw_icon(im_colour, sunset_icon_pos, (icon_small, icon_small), '\uf052')
write(im_black, sunset_time_pos, (col_width-icon_small, row_height), sunset,
font = self.font)
# Add the forecast data to the correct places
for pos in range(1, len(fc_data)+1):
stamp = fc_data[f'fc{pos}']['stamp']
icon = weathericons[fc_data[f'fc{pos}']['icon']]
temp = fc_data[f'fc{pos}']['temp']
write(im_black, eval(f'stamp_fc{pos}'), (col_width, row_height),
stamp, font = self.font)
draw_icon(im_colour, eval(f'icon_fc{pos}'), (col_width, row_height+line_gap*2),
icon)
write(im_black, eval(f'temp_fc{pos}'), (col_width, row_height),
temp, font = self.font)
border_h = row3 + row_height
border_w = col_width - 3 #leave 3 pixels gap
# Add borders around each sub-section
draw_border(im_black, (col1, row1), (col_width*3 - 3, border_h),
shrinkage=(0,0))
for _ in range(4,8):
draw_border(im_black, (eval(f'col{_}'), row1), (border_w, border_h),
shrinkage=(0,0))
# return the images ready for the display
return im_black, im_colour
if __name__ == '__main__':
print(f'running {filename} in standalone mode')