深色模式、首页设置页面和功能优化

lib/models/night-mode/theme_model.dart

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+// 时间: 2026-04-02
+// 功能: 深色模式主题模型
+// 介绍: 定义主题模式枚举和相关数据结构
+
+import 'package:flutter/material.dart';
+
+/// 应用主题模式枚举
+enum AppThemeMode {
+  /// 跟随系统
+  system,
+  /// 浅色模式
+  light,
+  /// 深色模式
+  dark,
+}
+
+/// 主题模式扩展方法
+extension AppThemeModeExtension on AppThemeMode {
+  /// 获取主题模式对应的 ThemeMode
+  ThemeMode get themeMode {
+    switch (this) {
+      case AppThemeMode.system:
+        return ThemeMode.system;
+      case AppThemeMode.light:
+        return ThemeMode.light;
+      case AppThemeMode.dark:
+        return ThemeMode.dark;
+    }
+  }
+
+  /// 获取主题模式显示名称
+  String get displayName {
+    switch (this) {
+      case AppThemeMode.system:
+        return '跟随系统';
+      case AppThemeMode.light:
+        return '浅色模式';
+      case AppThemeMode.dark:
+        return '深色模式';
+    }
+  }
+
+  /// 获取主题模式图标
+  IconData get icon {
+    switch (this) {
+      case AppThemeMode.system:
+        return Icons.brightness_auto;
+      case AppThemeMode.light:
+        return Icons.brightness_high;
+      case AppThemeMode.dark:
+        return Icons.brightness_2;
+    }
+  }
+}
+
+/// 主题配置数据类
+class ThemeConfig {
+  /// 是否启用深色模式（简化开关，true=深色, false=跟随系统或浅色）
+  final bool isDarkMode;
+
+  /// 主题模式
+  final AppThemeMode themeMode;
+
+  /// 主题色索引
+  final int themeColorIndex;
+
+  /// 强调色索引
+  final int accentColorIndex;
+
+  /// 字体大小索引 (0: 小, 1: 中, 2: 大)
+  final int fontSizeIndex;
+
+  /// 是否启用动画
+  final bool enableAnimation;
+
+  /// 是否启用模糊效果
+  final bool enableBlurEffect;
+
+  const ThemeConfig({
+    this.isDarkMode = false,
+    this.themeMode = AppThemeMode.system,
+    this.themeColorIndex = 0,
+    this.accentColorIndex = 0,
+    this.fontSizeIndex = 1,
+    this.enableAnimation = true,
+    this.enableBlurEffect = true,
+  });
+
+  /// 从 JSON 创建
+  factory ThemeConfig.fromJson(Map<String, dynamic> json) {
+    return ThemeConfig(
+      isDarkMode: json['isDarkMode'] ?? false,
+      themeMode: AppThemeMode.values[json['themeMode'] ?? 0],
+      themeColorIndex: json['themeColorIndex'] ?? 0,
+      accentColorIndex: json['accentColorIndex'] ?? 0,
+      fontSizeIndex: json['fontSizeIndex'] ?? 1,
+      enableAnimation: json['enableAnimation'] ?? true,
+      enableBlurEffect: json['enableBlurEffect'] ?? true,
+    );
+  }
+
+  /// 转换为 JSON
+  Map<String, dynamic> toJson() {
+    return {
+      'isDarkMode': isDarkMode,
+      'themeMode': themeMode.index,
+      'themeColorIndex': themeColorIndex,
+      'accentColorIndex': accentColorIndex,
+      'fontSizeIndex': fontSizeIndex,
+      'enableAnimation': enableAnimation,
+      'enableBlurEffect': enableBlurEffect,
+    };
+  }
+
+  /// 复制并修改
+  ThemeConfig copyWith({
+    bool? isDarkMode,
+    AppThemeMode? themeMode,
+    int? themeColorIndex,
+    int? accentColorIndex,
+    int? fontSizeIndex,
+    bool? enableAnimation,
+    bool? enableBlurEffect,
+  }) {
+    return ThemeConfig(
+      isDarkMode: isDarkMode ?? this.isDarkMode,
+      themeMode: themeMode ?? this.themeMode,
+      themeColorIndex: themeColorIndex ?? this.themeColorIndex,
+      accentColorIndex: accentColorIndex ?? this.accentColorIndex,
+      fontSizeIndex: fontSizeIndex ?? this.fontSizeIndex,
+      enableAnimation: enableAnimation ?? this.enableAnimation,
+      enableBlurEffect: enableBlurEffect ?? this.enableBlurEffect,
+    );
+  }
+}