114 lines
3.8 KiB
C#
114 lines
3.8 KiB
C#
using System.ComponentModel;
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using System.Windows.Markup;
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namespace Melskin.Appearance;
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/// <summary>
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/// 提供字典实现，该字典通过合并一个“模式”字典和一个依赖于模式的“调色板”字典来动态构建完整的主题。
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/// 此版本已根据指定的文件夹结构进行调整。
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/// </summary>
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[Localizability(LocalizationCategory.Ignore)]
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[Ambient]
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[UsableDuringInitialization(true)]
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public class ThemesDictionary : ResourceDictionary
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{
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private readonly ResourceDictionary modeDictionary = new ResourceDictionary();
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private readonly ResourceDictionary paletteDictionary = new ResourceDictionary();
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private ThemeMode? currentMode;
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private ThemePalette? currentPalette;
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/// <summary>
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/// 构造函数，将内部字典添加到 MergedDictionaries 集合。
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/// </summary>
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public ThemesDictionary()
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{
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MergedDictionaries.Add(modeDictionary);
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MergedDictionaries.Add(paletteDictionary);
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if (DesignerProperties.GetIsInDesignMode(new DependencyObject()))
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{
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UpdateSources();
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}
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}
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/// <summary>
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/// 根据当前的 Mode 和 Palette 更新内部字典的 Source。
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/// </summary>
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private void UpdateSources()
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{
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// 设计时模式：加载一个固定的、安全的主题组合以确保设计器稳定。
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if (DesignerProperties.GetIsInDesignMode(new DependencyObject()))
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{
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// 加载 Mode 文件: .../Themes/Light.xaml
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var defaultModeUri = new Uri($"{ThemeManager.ThemesDictionaryPath}Light.xaml", UriKind.RelativeOrAbsolute);
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if (modeDictionary.Source != defaultModeUri)
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modeDictionary.Source = defaultModeUri;
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// 加载 Palette 文件: .../Themes/Accents/LightBlue.xaml
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var defaultPaletteUri = new Uri($"{ThemeManager.ThemesDictionaryPath}Accents/LightBlue.xaml", UriKind.RelativeOrAbsolute);
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if (paletteDictionary.Source != defaultPaletteUri)
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paletteDictionary.Source = defaultPaletteUri;
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return;
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}
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// 运行时模式：根据当前已有的属性值进行更新。
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// 更新 Mode 字典 (只要 Mode 有值就更新)
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if (currentMode.HasValue)
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{
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// 路径示例: /Melskin;component/Appearance/Themes/Dark.xaml
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var modeSourceUri = new Uri($"{ThemeManager.ThemesDictionaryPath}{currentMode.Value}.xaml", UriKind.RelativeOrAbsolute);
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if (modeDictionary.Source != modeSourceUri)
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{
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modeDictionary.Source = modeSourceUri;
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}
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}
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// 更新 Palette 字典 (必须在 Mode 和 Palette 都有值的情况下才更新)
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if (currentMode.HasValue && currentPalette.HasValue)
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{
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var paletteName = $"{currentMode.Value}{currentPalette.Value}";
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// 路径示例: /Melskin;component/Appearance/Themes/Accents/DarkGreen.xaml
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var paletteSourceUri = new Uri($"{ThemeManager.ThemesDictionaryPath}Accents/{paletteName}.xaml", UriKind.RelativeOrAbsolute);
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if (paletteDictionary.Source != paletteSourceUri)
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{
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paletteDictionary.Source = paletteSourceUri;
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}
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}
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}
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/// <summary>
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/// 设置应用程序的主题模式（明或暗）。
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/// </summary>
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public ThemeMode Mode
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{
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set
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{
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if (currentMode != value)
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{
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currentMode = value;
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UpdateSources();
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}
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}
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}
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/// <summary>
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/// 设置应用程序的主题调色板（颜色）。
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/// </summary>
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public ThemePalette Palette
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{
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set
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{
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if (currentPalette != value)
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{
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currentPalette = value;
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UpdateSources();
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}
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}
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}
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}
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