import datetime
import string
import subprocess
import dateutil.parser
from libqtile.widget import base
[docs]
class KhalCalendar(base.BackgroundPoll):
"""Khal calendar widget
This widget will display the next appointment on your Khal calendar in the
qtile status bar. Appointments within the "reminder" time will be
highlighted.
Widget requirements: dateutil_.
.. _dateutil: https://pypi.org/project/python-dateutil/
"""
defaults = [
("reminder_color", "FF0000", "color of calendar entries during reminder time"),
("foreground", "FFFF33", "default foreground color"),
("remindertime", 10, "reminder time in minutes"),
("lookahead", 7, "days to look ahead in the calendar"),
]
def __init__(self, **config):
base.BackgroundPoll.__init__(self, "", **config)
self.add_defaults(KhalCalendar.defaults)
self.text = "Calendar not initialized."
self.default_foreground = self.foreground
def poll(self):
# get today and tomorrow
now = datetime.datetime.now()
# get reminder time in datetime format
remtime = datetime.timedelta(minutes=self.remindertime)
# parse khal output for the next seven days
# and get the next event
args = ["khal", "list", "now", str(self.lookahead) + "d"]
cal = subprocess.Popen(args, stdout=subprocess.PIPE)
output = cal.communicate()[0].decode("utf-8")
if output == "No events\n":
return "No appointments in next " + str(self.lookahead) + " days"
output = output.split("\n")
date = "unknown"
starttime = None
endtime = None
# output[0] = 'Friday, 15/04/1976'
outputsplitted = output[0].split(" ")
date = outputsplitted[1]
# output[1] = '[ ][12:00-13:00] dentist'
try:
output_nb = output[1].strip(" ")
starttime = dateutil.parser.parse(date + " " + output_nb[:5], ignoretz=True)
endtime = dateutil.parser.parse(date + " " + output_nb[6:11], ignoretz=True)
except ValueError:
# all day event output contains no start nor end time.
starttime = dateutil.parser.parse(date + " 00:00", ignoretz=True)
endtime = starttime + datetime.timedelta(hours=23, minutes=59)
data = output[0].replace(",", "") + " " + output[1]
# get rid of any garbage in appointment added by khal
data = "".join(filter(lambda x: x in string.printable, data))
# colorize the event if it is within reminder time
if (starttime - remtime <= now) and (endtime > now):
self.layout.colour = self.reminder_color
else:
self.layout.colour = self.default_foreground
return data