330 lines
9.9 KiB
C#
330 lines
9.9 KiB
C#
using System.Reflection;
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using System.Windows.Controls;
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using System.Windows.Media.Animation;
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using System.Windows.Shapes;
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using WPFluent.Controls;
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using WPFluent.Extensions;
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using WPFluent.Markup;
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namespace WPFluent.Appearance;
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/// <summary>
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/// 允许通过交换包含动态资源的资源字典来管理应用程序主题。
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/// </summary>
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/// <example>
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/// <code lang="csharp"> ThemeManager.ChangeAppTheme( ThemeType.Light );</code> <code lang="csharp"> if
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/// (ThemeManager.GetAppTheme() == ThemeType.Dark) { ThemeManager.ChangeAppTheme(
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/// ThemeType.Light ); }</code> <code> ThemeManager.Changed += (theme, accent) => {
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/// Debug.WriteLine($"Application theme changed to {theme.ToString()}"); };</code>
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/// </example>
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public class ThemeManager
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{
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internal static string LibraryNamespace => Assembly.GetExecutingAssembly().GetName().Name;
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public static string ThemesDictionaryPath => $"pack://application:,,,/{LibraryNamespace};component/Themes/";
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private static ThemeType _activeApplicationTheme = ThemeType.Unknow;
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public static event Action<ThemeType, Color>? Changed;
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#region Animation
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private static Task AnimateBrushColorAsync(SolidColorBrush brush, Color toColor, int durationMs = 500)
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{
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if (brush.IsFrozen)
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return Task.CompletedTask; // 冻结的Brush无法动画，直接返回完成的Task
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var tcs = new TaskCompletionSource<bool>();
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var anim = new ColorAnimation
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{
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To = toColor,
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Duration = TimeSpan.FromMilliseconds(durationMs),
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EasingFunction = new CubicEase { EasingMode = EasingMode.EaseInOut },
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FillBehavior = FillBehavior.HoldEnd
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};
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// 在动画完成时标记任务完成
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anim.Completed += (s, e) => tcs.SetResult(true);
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brush.BeginAnimation(SolidColorBrush.ColorProperty, anim);
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return tcs.Task;
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}
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/// <summary>
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/// 带淡入淡出过渡动画的主题切换
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/// </summary>
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private static async void ApplyThemeWithAnimation(ThemeType theme)
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{
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try
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{
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var window = Application.Current.MainWindow;
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if (window == null) return;
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// 确保内容容器支持 Children
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if (!(window.Content is Panel panel))
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throw new InvalidOperationException("ThemeManager requires Window.Content to be a Panel.");
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// 创建遮罩
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var overlay = new Rectangle
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{
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Fill = new SolidColorBrush(Colors.Black),
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Opacity = 0,
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IsHitTestVisible = false,
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};
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Panel.SetZIndex(overlay, int.MaxValue);
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panel.Children.Add(overlay);
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// 淡入
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await AnimateOpacity(overlay, 0, 1, TimeSpan.FromMilliseconds(300));
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// 切换资源字典
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//ApplyThemeInternal(theme);
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ChangeAppTheme(theme);
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// 淡出
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await AnimateOpacity(overlay, 1, 0, TimeSpan.FromMilliseconds(300));
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panel.Children.Remove(overlay);
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Changed?.Invoke(theme, AccentColorManager.SystemAccent);
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}
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catch (Exception ex)
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{
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}
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}
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private static Task AnimateOpacity(UIElement element, double from, double to, TimeSpan duration)
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{
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var tcs = new TaskCompletionSource<bool>();
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var anim = new DoubleAnimation(from, to, new Duration(duration));
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anim.Completed += (s, e) => tcs.SetResult(true);
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element.BeginAnimation(UIElement.OpacityProperty, anim);
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return tcs.Task;
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}
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#endregion
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/// <summary>
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/// 将资源应用于 <paramref name="frameworkElement"/>.
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/// </summary>
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public static void ApplyResourcesToElement(FrameworkElement frameworkElement)
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{
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if (frameworkElement.Resources.MergedDictionaries.Count <
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ThemeManager.Current.Resources.MergedDictionaries.Count)
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{
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foreach (var dictionary in ThemeManager.Current.Resources.MergedDictionaries)
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{
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frameworkElement.Resources.MergedDictionaries.Add(dictionary);
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}
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}
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}
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/// <summary>
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/// 更改当前应用程序主题。
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/// </summary>
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/// <param name="applicationTheme">要设置的主题</param>
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/// <param name="backgroundEffect">是否应用自定义背景效果。</param>
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/// <param name="updateAccent">是否应更改颜色强调。</param>
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public static void ChangeAppTheme(ThemeType applicationTheme, WindowBackdropType backgroundEffect = WindowBackdropType.Mica)
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{
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//if (updateAccent)
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//{
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// AccentColorManager.Apply(
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// Color.FromRgb(194, 115, 37),
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// applicationTheme,
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// false);
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//}
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if (applicationTheme == ThemeType.Unknow)
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{
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return;
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}
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ResourceDictionaryManager appDictionaries = new();
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var themeDictionaryName = applicationTheme switch
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{
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ThemeType.Light => "Light",
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ThemeType.Dark => "Dark",
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ThemeType.HcWhite => "HCWhite",
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ThemeType.HcBlack => "HCBlack",
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_ => "Light"
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};
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//ApplyThemeWithAnimation(applicationTheme);
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if (!appDictionaries.UpdateDictionary(
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"themes",
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new Uri($"{ThemesDictionaryPath}{themeDictionaryName}.xaml", UriKind.Absolute)))
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{
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return;
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}
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_activeApplicationTheme = applicationTheme;
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Changed?.Invoke(applicationTheme, AccentColorManager.SystemAccent);
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if (Current.MainWindow is Window mainWindow)
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{
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WindowBackgroundManager.UpdateBackground(mainWindow, applicationTheme, backgroundEffect);
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}
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}
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/// <summary>
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/// 获取当前设置的应用程序主题。
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/// </summary>
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/// <returns><see cref="ThemeType.Unknow"/> if something goes wrong.</returns>
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public static ThemeType GetAppTheme()
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{
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if (_activeApplicationTheme == ThemeType.Unknow)
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{
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ResourceDictionaryManager appDictionaries = new();
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var themeDictionary = appDictionaries.LookupDictionary("themes");
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if (themeDictionary == null)
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{
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return ThemeType.Unknow;
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}
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var themeUri = themeDictionary.Source.ToString();
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if (themeUri.Contains("light", StringComparison.OrdinalIgnoreCase))
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{
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_activeApplicationTheme = ThemeType.Light;
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}
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if (themeUri.Contains("dark", StringComparison.OrdinalIgnoreCase))
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{
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_activeApplicationTheme = ThemeType.Dark;
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}
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if (themeUri.Contains("hcwhite", StringComparison.OrdinalIgnoreCase))
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{
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_activeApplicationTheme = ThemeType.HcWhite;
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}
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if (themeUri.Contains("hcblack", StringComparison.OrdinalIgnoreCase))
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{
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_activeApplicationTheme = ThemeType.HcBlack;
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}
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}
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return _activeApplicationTheme;
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}
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#region UiApplication
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private static ThemeManager? _themeManagerInstance;
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private readonly Application? application;
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private Window? mainWindow;
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private ResourceDictionary? resources;
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/// <summary>
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/// 初始化 <see cref="ThemeManager"/> 实例.
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/// </summary>
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private ThemeManager(Application? application)
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{
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if (application is null)
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{
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return;
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}
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if (!ApplicationHasResources(application))
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{
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return;
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}
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this.application = application;
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System.Diagnostics.Debug
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.WriteLine($"INFO | {typeof(ThemeManager)} application is {this.application}", "WPFluent");
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}
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private static bool ApplicationHasResources(Application? application)
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{
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return application
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.Resources.MergedDictionaries
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.Where(e => e.Source is not null)
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.Any(
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e => e.Source
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.ToString()
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.Contains(ThemeManager.LibraryNamespace, StringComparison.OrdinalIgnoreCase));
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}
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/// <summary>
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/// 将应用程序的 变为 shutdown 模式。
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/// </summary>
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public void Shutdown() { application?.Shutdown(); }
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/// <summary>
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/// 获取或设置应用程序的资源。
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/// </summary>
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public object TryFindResource(object resourceKey) { return Resources[resourceKey]; }
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/// <summary>
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/// 获取当前UI应用程序。
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/// </summary>
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public static ThemeManager Current
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{
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get
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{
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_themeManagerInstance ??= new ThemeManager(Application.Current);
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return _themeManagerInstance;
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}
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}
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/// <summary>
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/// 获取或设置应用程序的主窗口。
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/// </summary>
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public Window? MainWindow
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{
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get => application?.MainWindow ?? mainWindow;
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set
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{
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if (application != null)
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{
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application.MainWindow = value;
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}
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mainWindow = value;
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}
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}
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/// <summary>
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/// 获取或设置应用程序的资源。
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/// </summary>
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public ResourceDictionary Resources
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{
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get
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{
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if (resources is null)
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{
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resources = [];
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try
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{
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var themesDictionary = new ThemesDictionary();
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var controlsDictionary = new ControlsDictionary();
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resources.MergedDictionaries.Add(themesDictionary);
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resources.MergedDictionaries.Add(controlsDictionary);
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}
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catch
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{
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}
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}
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return application?.Resources ?? resources;
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}
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set
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{
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if (application is not null)
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{
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application.Resources = value;
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}
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resources = value;
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}
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}
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#endregion
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} |