Estimate sunup/sundown times for earlier wallpaper changes in winter, update for Qtile 0.34.x

kuro/config/__init__.py

@@ -80,6 +80,11 @@ class Config(BaseConfig):
         {'title': 'Transaction splits', 'wm_class': 'homebank'},
     ]
 
+    # Location
+    loc_latitude = 52.357603
+    loc_longitude = 6.663761
+    loc_timezone = "Europe/Amsterdam"
+
     # Autostart applications
     apps_autostart_group = [
         {'group': "", 'command': ["firefox"]},

kuro/theme.py

@@ -5,11 +5,11 @@ import time
 import datetime
 import socket
 import subprocess
+from dateutil import tz
 from typing import Optional
 
 from libqtile.backend.base import Window
-from libqtile.backend.wayland.layer import LayerStatic
+from libqtile.backend.wayland.window import Window as WaylandWindow, Static as WaylandStatic
-from libqtile.backend.wayland.xwindow import XWindow as WaylandXWindow, XStatic as WaylandXStatic
 from libqtile.backend.x11.window import XWindow as XorgXWindow
 # Initialize logging
 from libqtile.log_utils import logger
@@ -30,6 +30,7 @@ logger.warning("Importing kuro utils...")
 
 import kuro.utils.widgets
 from kuro.utils import general as utils
+from kuro.utils.suntime import Sun
 
 logger.warning("Importing variables and other utils...")
 
@@ -643,11 +644,9 @@ class Kuro(BaseTheme):
         try:
             w_pid = client.get_pid()
         except AttributeError:  # Some windows might not have this .get_pid method. Try other ways
-            if isinstance(client, WaylandXWindow) or isinstance(client, WaylandXStatic):
+            if isinstance(client, XorgXWindow):
-                w_pid = client.surface.pid
-            elif isinstance(client, XorgXWindow):
                 w_pid = client.get_net_wm_pid()
-            elif isinstance(client, LayerStatic):
+            elif isinstance(client, WaylandStatic) or isinstance(client, WaylandInternal):
                 pass  # Wayland background layer 'window'
             else:
                 logger.error(f"Unknown window type {client.__class__.__name__}")
@@ -714,11 +713,18 @@ class Kuro(BaseTheme):
         wallpapers = []
         wallpaper_dir = Config.get("desktop_bg_folder", "")
 
-        # Use a wallpaper from the night folder after 9PM and before 6AM
+        # Get current and sunset/sunrise times using util
+        sun = Sun(Config.get("loc_latitude", 52.357603), Config.get("loc_longitude", 6.663761))
+        tzone = tz.gettz(Config.get("loc_timezone", "Europe/Amsterdam"))
+        cur_time = datetime.datetime.now(tz=tzone)
+        sunset = sun.get_sunset_time(time_zone=tzone)
+        sunrise = sun.get_sunrise_time(time_zone=tzone)
+        logger.warning("Using current time {}, sunset {}, sunrise {} to determine wallpaper.".format(cur_time, sunset, sunrise))
+
+        # Use a wallpaper from the night folder after sunset and before sunrise
         wallpaper_night_dir = Config.get("desktop_bg_night_folder", "")
         if wallpaper_night_dir and os.path.isdir(wallpaper_night_dir):
-            cur_time = datetime.datetime.now()
+            if cur_time > sunset or cur_time < sunrise:
-            if cur_time.hour > 21 or cur_time.hour < 6:
                 wallpaper_dir = wallpaper_night_dir
 
         try:

kuro/utils/suntime.py

@@ -0,0 +1,141 @@
+import math
+import warnings
+from datetime import datetime, timedelta, time, timezone
+
+# Copied from: https://github.com/SatAgro/suntime/blob/master/suntime/suntime.py
+
+# CONSTANT
+TO_RAD = math.pi/180.0
+
+
+class SunTimeException(Exception):
+
+    def __init__(self, message):
+        super(SunTimeException, self).__init__(message)
+
+
+class Sun:
+    """
+    Approximated calculation of sunrise and sunset datetimes. Adapted from:
+    https://stackoverflow.com/questions/19615350/calculate-sunrise-and-sunset-times-for-a-given-gps-coordinate-within-postgresql
+    """
+    def __init__(self, lat, lon):
+        self._lat = lat
+        self._lon = lon
+
+        self.lngHour = self._lon / 15
+
+    def get_sunrise_time(self, at_date=datetime.now(), time_zone=timezone.utc):
+        """
+        :param at_date: Reference date. datetime.now() if not provided.
+        :param time_zone: pytz object with .tzinfo() or None
+        :return: sunrise datetime.
+        :raises: SunTimeException when there is no sunrise and sunset on given location and date.
+        """
+        time_delta = self.get_sun_timedelta(at_date, time_zone=time_zone, is_rise_time=True)
+        if time_delta is None:
+            raise SunTimeException('The sun never rises on this location (on the specified date)')
+        else:
+            return datetime.combine(at_date, time(tzinfo=time_zone)) + time_delta
+
+    def get_sunset_time(self, at_date=datetime.now(), time_zone=timezone.utc):
+        """
+        Calculate the sunset time for given date.
+        :param at_date: Reference date. datetime.now() if not provided.
+        :param time_zone: pytz object with .tzinfo() or None
+        :return: sunset datetime.
+        :raises: SunTimeException when there is no sunrise and sunset on given location and date.
+        """
+        time_delta = self.get_sun_timedelta(at_date, time_zone=time_zone, is_rise_time=False)
+        if time_delta is None:
+            raise SunTimeException('The sun never rises on this location (on the specified date)')
+        else:
+            return datetime.combine(at_date, time(tzinfo=time_zone)) + time_delta
+
+    def get_sun_timedelta(self, at_date, time_zone, is_rise_time=True, zenith=90.8):
+        """
+        Calculate sunrise or sunset date.
+        :param at_date: Reference date
+        :param time_zone: pytz object with .tzinfo() or None
+        :param is_rise_time: True if you want to calculate sunrise time.
+        :param zenith: Sun reference zenith
+        :return: timedelta showing hour, minute, and second of sunrise or sunset
+        """
+
+        # If not set get local timezone from datetime
+        if time_zone is None:
+            time_zone = datetime.now().tzinfo
+
+        # 1. first get the day of the year
+        N = at_date.timetuple().tm_yday
+
+        # 2. convert the longitude to hour value and calculate an approximate time
+        if is_rise_time:
+            t = N + ((6 - self.lngHour) / 24)
+        else:   # sunset
+            t = N + ((18 - self.lngHour) / 24)
+
+        # 3a. calculate the Sun's mean anomaly
+        M = (0.9856 * t) - 3.289
+
+        # 3b. calculate the Sun's true longitude
+        L = M + (1.916 * math.sin(TO_RAD*M)) + (0.020 * math.sin(TO_RAD * 2 * M)) + 282.634
+        L = self._force_range(L, 360)   # NOTE: L adjusted into the range [0,360)
+
+        # 4a. calculate the Sun's declination
+        sinDec = 0.39782 * math.sin(TO_RAD*L)
+        cosDec = math.cos(math.asin(sinDec))
+
+        # 4b. calculate the Sun's local hour angle
+        cosH = (math.cos(TO_RAD*zenith) - (sinDec * math.sin(TO_RAD*self._lat))) / (cosDec * math.cos(TO_RAD*self._lat))
+
+        if cosH > 1:
+            return None     # The sun never rises on this location (on the specified date)
+        if cosH < -1:
+            return None     # The sun never sets on this location (on the specified date)
+
+        # 4c. finish calculating H and convert into hours
+        if is_rise_time:
+            H = 360 - (1/TO_RAD) * math.acos(cosH)
+        else:   # setting
+            H = (1/TO_RAD) * math.acos(cosH)
+        H = H / 15
+
+        # 5a. calculate the Sun's right ascension
+        RA = (1/TO_RAD) * math.atan(0.91764 * math.tan(TO_RAD*L))
+        RA = self._force_range(RA, 360)     # NOTE: RA adjusted into the range [0,360)
+
+        # 5b. right ascension value needs to be in the same quadrant as L
+        Lquadrant = (math.floor(L/90)) * 90
+        RAquadrant = (math.floor(RA/90)) * 90
+        RA = RA + (Lquadrant - RAquadrant)
+
+        # 5c. right ascension value needs to be converted into hours
+        RA = RA / 15
+
+        # 6. calculate local mean time of rising/setting
+        T = H + RA - (0.06571 * t) - 6.622
+
+        # 7a. adjust back to UTC
+        UT = T - self.lngHour
+
+        if time_zone:
+            # 7b. adjust back to local time
+            UT += time_zone.utcoffset(at_date).total_seconds() / 3600
+
+        # 7c. rounding and impose range bounds
+        UT = round(UT, 2)
+        # if is_rise_time:
+        UT = self._force_range(UT, 24)
+
+        # 8. return timedelta
+        return timedelta(hours=UT)
+
+    @staticmethod
+    def _force_range(v, max):
+        # force v to be >= 0 and < max
+        if v < 0:
+            return v + max
+        elif v >= max:
+            return v - max
+        return v