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cache dark mode value so UI doesn't break when it changes

Browse Source 
https://anki.tenderapp.com/discussions/ankidesktop/39550-cant-deactivate-night-mode-on-2121-for-mac
This commit is contained in:
Damien Elmes 2020-03-23 18:39:37 +10:00
parent 7a4f3d0318
commit 7d94465256
1 changed files with 8 additions and 3 deletions
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11
qt/aqt/theme.py
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@ -4,7 +4,7 @@
import platform
import sys
from typing import Dict
from typing import Dict, Optional
from anki.utils import isMac
from aqt import QApplication, gui_hooks, isWin
@ -17,6 +17,7 @@ class ThemeManager:
_icon_cache_light: Dict[str, QIcon] = {}
_icon_cache_dark: Dict[str, QIcon] = {}
_icon_size = 128
_macos_dark_mode_cached: Optional[bool] = None
def macos_dark_mode(self) -> bool:
if not getattr(sys, "frozen", False):
@ -25,9 +26,13 @@ class ThemeManager:
return False
if qtminor < 13:
return False
import darkdetect # pylint: disable=import-error
if self._macos_dark_mode_cached is None:
import darkdetect # pylint: disable=import-error
return darkdetect.isDark() is True
# cache the value, as the interface gets messed up
# if the value changes after starting Anki
self._macos_dark_mode_cached = darkdetect.isDark() is True
return self._macos_dark_mode_cached
def get_night_mode(self) -> bool:
return self.macos_dark_mode() or self._night_mode_preference