forked from NinjaCheetah/NUSGet
101 lines
3.4 KiB
Python
101 lines
3.4 KiB
Python
# "modules/theme.py", licensed under the MIT license
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# Copyright 2024-2026 NinjaCheetah & Contributors
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import os
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import platform
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import subprocess
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from modules.config import update_setting
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def is_dark_theme_windows():
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# This has to be here so that Python doesn't try to import it on non-Windows.
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import winreg
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try:
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registry = winreg.ConnectRegistry(None, winreg.HKEY_CURRENT_USER)
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key = winreg.OpenKey(registry, r"Software\Microsoft\Windows\CurrentVersion\Themes\Personalize")
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# This value is "AppsUseLightTheme" so a "1" is light and a "0" is dark. Side note: I hate the Windows registry.
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value, _ = winreg.QueryValueEx(key, "AppsUseLightTheme")
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return value == 0
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except Exception:
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return False
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def is_dark_theme_macos():
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# macOS is weird. If the dark theme is on, then `defaults read -g AppleInterfaceStyle` returns "Dark". If the light
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# theme is on, then trying to read this key fails and returns an error instead.
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try:
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result = subprocess.run(
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["defaults", "read", "-g", "AppleInterfaceStyle"],
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capture_output=True, text=True
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)
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return "Dark" in result.stdout
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except Exception:
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return False
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def is_dark_theme_linux():
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try:
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import subprocess
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result = subprocess.run(
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["gsettings", "get", "org.gnome.desktop.interface", "gtk-theme"],
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capture_output=True, text=True
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)
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# Looking for *not* "Light", because I want any theme that isn't light to be dark. An example of this is my own
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# KDE Plasma setup on my desktop, where I use the "Breeze" GTK theme and want dark NUSGet to be used in that
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# case.
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return not "light" in result.stdout.lower()
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except Exception:
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return False
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def is_dark_theme(config_data: dict):
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# Theming priority order:
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# 1. `THEME` environment variable
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# 2. Theme saved in config.json
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# 3. The system theme
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# 4. Light, if all else fails (though personally I'd prefer dark)
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#
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# First, check for an environment variable overriding the theme, and use that if it exists.
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try:
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if os.environ["THEME"].lower() == "light":
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return False
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elif os.environ["THEME"].lower() == "dark":
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return True
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else:
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print(f"Unknown theme specified: \"{os.environ['THEME']}\"")
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except KeyError:
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pass
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# If the theme wasn't overridden, read the user's preference in config.json.
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try:
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match config_data["theme"]:
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case "light":
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return False
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case "dark":
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return True
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case _:
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pass
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except KeyError:
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pass
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# If a theme wasn't set (or the theme is "system"), then check for the system theme.
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system = platform.system()
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if system == "Windows":
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return is_dark_theme_windows()
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elif system == "Darwin":
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return is_dark_theme_macos()
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else:
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return is_dark_theme_linux()
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def set_theme(config_data: dict, theme: str) -> None:
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match theme:
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case "light":
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print("setting theme to light")
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update_setting(config_data, "theme", "light")
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case "dark":
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print("setting theme to dark")
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update_setting(config_data, "theme", "dark")
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case _:
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print("setting theme to system (default)")
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update_setting(config_data, "theme", "")
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