初始化

lib/widgets/base/config/color.dart

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+import 'package:flutter/material.dart';
+
+import 'config.dart';
+
+class ColorResolver {
+  final Color bg;
+  final Color font;
+  final Color border;
+
+  ColorResolver(this.bg, this.font, this.border);
+}
+
+///返回颜色
+ColorResolver resolveEffectColors(Color color, Effect effect) => switch (effect) {
+  Effect.dark => ColorResolver(color, Colors.white, color),
+  Effect.light => () {
+    final pale = color.withValues(alpha: 0.2);
+    return ColorResolver(pale, color, pale);
+  }(), // 注意这里多了 ()，表示立即调用
+  Effect.plain => ColorResolver(Colors.white, color, color),
+};

lib/widgets/base/config/config.dart

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+///主题风格
+enum Effect {
+  dark,
+  light,
+  plain,
+}
+
+///主题类型
+enum ThemeType {
+  primary,
+  success,
+  warning,
+  danger,
+  info,
+}