83 lines
2.8 KiB
C#
83 lines
2.8 KiB
C#
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using Microsoft.Win32;
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using WPFluent.Interop;
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namespace WPFluent.Appearance;
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public static class SystemMenuThemeManager
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{
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public static void Apply(SystemMenuTheme theme = SystemMenuTheme.Auto)
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{
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// Enable dark mode for context menus if using dark theme
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if (Environment.OSVersion.Version.Build >= 18362) // Windows 10 1903
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{
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if (theme == SystemMenuTheme.Auto)
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{
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// UxTheme methods will apply all of menus.
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// However, the Windows style system prefers that
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// Windows System Menu is based on `Apps Theme`,
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// and Tray Context Menu is based on `System Theme` when using a custom theme.
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// But actually we can't have our cake and eat it too.
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// Finally, we synchronize the theme styles of tray with higher usage rates.
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if (ApplicationThemeManager.GetSystemTheme() == SystemTheme.Dark)
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{
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_ = UxTheme.SetPreferredAppMode(UxTheme.PreferredAppMode.ForceDark);
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UxTheme.FlushMenuThemes();
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}
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// Synchronize the theme with system settings
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SystemEvents.UserPreferenceChanged -= OnUserPreferenceChangedEventHandler;
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SystemEvents.UserPreferenceChanged += OnUserPreferenceChangedEventHandler;
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}
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else if (theme == SystemMenuTheme.Dark)
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{
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SystemEvents.UserPreferenceChanged -= OnUserPreferenceChangedEventHandler;
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_ = UxTheme.SetPreferredAppMode(UxTheme.PreferredAppMode.ForceDark);
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UxTheme.FlushMenuThemes();
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}
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else if (theme == SystemMenuTheme.Light)
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{
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SystemEvents.UserPreferenceChanged -= OnUserPreferenceChangedEventHandler;
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_ = UxTheme.SetPreferredAppMode(UxTheme.PreferredAppMode.ForceLight);
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UxTheme.FlushMenuThemes();
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}
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}
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}
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private static void OnUserPreferenceChangedEventHandler(object sender, UserPreferenceChangedEventArgs e)
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{
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if (ApplicationThemeManager.GetSystemTheme() == SystemTheme.Dark)
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{
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_ = UxTheme.SetPreferredAppMode(UxTheme.PreferredAppMode.ForceDark);
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UxTheme.FlushMenuThemes();
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}
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else
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{
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_ = UxTheme.SetPreferredAppMode(UxTheme.PreferredAppMode.ForceLight);
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UxTheme.FlushMenuThemes();
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}
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}
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}
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/// <summary>
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/// Theme in which an system menu is displayed.
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/// </summary>
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public enum SystemMenuTheme
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{
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/// <summary>
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/// Auto system theme.
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/// </summary>
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Auto = ApplicationTheme.Unknown,
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/// <summary>
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/// Dark system theme.
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/// </summary>
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Dark = ApplicationTheme.Dark,
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/// <summary>
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/// Light system theme.
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/// </summary>
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Light = ApplicationTheme.Light,
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}
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