mirror of
https://github.com/TomSchimansky/CustomTkinter.git
synced 2023-08-10 21:13:13 +03:00
136 lines
4.0 KiB
Python
136 lines
4.0 KiB
Python
import sys
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import tkinter
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from distutils.version import StrictVersion as Version
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from typing import Callable
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try:
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import darkdetect
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if Version(darkdetect.__version__) < Version("0.3.1"):
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sys.stderr.write("WARNING: You have to upgrade the darkdetect library: pip3 install --upgrade darkdetect\n")
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if sys.platform != "darwin":
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exit()
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except ImportError as err:
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raise err
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except Exception:
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sys.stderr.write("customtkinter.appearance_mode_tracker warning: failed to import darkdetect")
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class AppearanceModeTracker:
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callback_list = []
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app_list = []
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update_loop_running = False
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update_loop_interval = 500 # milliseconds
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appearance_mode_set_by = "system"
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appearance_mode = 0 # Light (standard)
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@classmethod
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def init_appearance_mode(cls):
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if cls.appearance_mode_set_by == "system":
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new_appearance_mode = cls.detect_appearance_mode()
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if new_appearance_mode != cls.appearance_mode:
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cls.appearance_mode = new_appearance_mode
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cls.update_callbacks()
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@classmethod
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def add(cls, callback: Callable, widget=None):
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cls.callback_list.append(callback)
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if widget is not None:
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app = cls.get_tk_root_of_widget(widget)
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if app not in cls.app_list:
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cls.app_list.append(app)
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if not cls.update_loop_running:
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app.after(500, cls.update)
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cls.update_loop_running = True
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@classmethod
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def remove(cls, callback: Callable):
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try:
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cls.callback_list.remove(callback)
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except ValueError:
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return
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@staticmethod
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def detect_appearance_mode() -> int:
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try:
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if darkdetect.theme() == "Dark":
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return 1 # Dark
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else:
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return 0 # Light
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except NameError:
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return 0 # Light
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@classmethod
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def get_tk_root_of_widget(cls, widget):
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current_widget = widget
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while isinstance(current_widget, tkinter.Tk) is False:
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current_widget = current_widget.master
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return current_widget
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@classmethod
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def update_callbacks(cls):
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if cls.appearance_mode == 0:
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for callback in cls.callback_list:
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try:
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callback("Light")
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except Exception:
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continue
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elif cls.appearance_mode == 1:
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for callback in cls.callback_list:
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try:
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callback("Dark")
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except Exception:
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continue
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@classmethod
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def update(cls):
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if cls.appearance_mode_set_by == "system":
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new_appearance_mode = cls.detect_appearance_mode()
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if new_appearance_mode != cls.appearance_mode:
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cls.appearance_mode = new_appearance_mode
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cls.update_callbacks()
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# find an existing tkinter.Tk object for the next call of .after()
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for app in cls.app_list:
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try:
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app.after(cls.update_loop_interval, cls.update)
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return
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except Exception:
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continue
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cls.update_loop_running = False
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@classmethod
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def get_mode(cls) -> int:
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return cls.appearance_mode
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@classmethod
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def set_appearance_mode(cls, mode_string: str):
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if mode_string.lower() == "dark":
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cls.appearance_mode_set_by = "user"
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new_appearance_mode = 1
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if new_appearance_mode != cls.appearance_mode:
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cls.appearance_mode = new_appearance_mode
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cls.update_callbacks()
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elif mode_string.lower() == "light":
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cls.appearance_mode_set_by = "user"
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new_appearance_mode = 0
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if new_appearance_mode != cls.appearance_mode:
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cls.appearance_mode = new_appearance_mode
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cls.update_callbacks()
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elif mode_string.lower() == "system":
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cls.appearance_mode_set_by = "system"
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