ecp_theme 2.1.0

翼协云主题管理包，提供 Light/Dark 主题配置、Color/Theme 扩展、通用尺寸规范及文本组件封装，内部项目通用的 Flutter 主题工具库。

example/lib/main.dart

import 'package:device_preview/device_preview.dart';
import 'package:ecp_theme/ecp_theme.dart';
import 'package:example/pages/color_ext_page.dart';
import 'package:example/pages/color_page.dart';
import 'package:example/pages/defalut_test_page.dart';
import 'package:example/pages/text_style_page.dart';
import 'package:example/pages/theme_switch_page.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';

import 'pages/color_scheme_page.dart';

void main() {
  runApp(
    DevicePreview(
      builder: (context) => const MyApp(),
      enabled: true,
    ),
  );
}

/// App 级主题模式（theme_switch_page 中的开关修改它）
final ValueNotifier<ThemeMode> appThemeMode =
    ValueNotifier<ThemeMode>(ThemeMode.light);

class MyApp extends StatelessWidget {
  const MyApp({super.key});

  @override
  Widget build(BuildContext context) {
    return ScreenUtilInit(
      designSize: Dimens.designSize,
      useInheritedMediaQuery: !kReleaseMode,
      builder: (context, widget) {
        var child = ValueListenableBuilder<ThemeMode>(
          valueListenable: appThemeMode,
          builder: (context, mode, _) => MaterialApp(
            title: '翼协云主题示例',
            theme: Themes.light,
            darkTheme: Themes.dark,
            themeMode: mode,
            home: const HomePage(),
          ),
        );
        return DevicePreview.appBuilder(context, child);
      },
    );
  }
}

/// 演示项数据
class _Demo {
  final IconData icon;
  final String title;
  final String subtitle;
  final WidgetBuilder builder;

  const _Demo(this.icon, this.title, this.subtitle, this.builder);
}

final List<_Demo> _demos = [
  _Demo(Icons.palette_outlined, '主题颜色', 'Themes 内置色板与辅助色', (_) => const ColorPage()),
  _Demo(Icons.colorize_outlined, 'ColorScheme', 'Material 3 色彩方案', (_) => const ColorSchemePage()),
  _Demo(Icons.invert_colors_outlined, '颜色扩展', 'ColorExt 加深提亮/明暗判断', (_) => const ColorExtPage()),
  _Demo(Icons.text_fields_outlined, '字体样式', 'TextStyles 与文本组件', (_) => const TextStylePage()),
  _Demo(Icons.dark_mode_outlined, '主题切换', 'Light/Dark 联动演示', (_) => const ThemeSwitchPage()),
  _Demo(Icons.sentiment_dissatisfied_outlined, '缺省页', 'DefaultPage 占位视图', (_) => const DefaultTestPage()),
];

class HomePage extends StatelessWidget {
  const HomePage({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('翼协云主题示例')),
      body: GridView.builder(
        padding: EdgeInsets.all(Dimens.listHorizontalPadding),
        gridDelegate: const SliverGridDelegateWithMaxCrossAxisExtent(
          maxCrossAxisExtent: 220,
          mainAxisSpacing: 12,
          crossAxisSpacing: 12,
          childAspectRatio: 1.05,
        ),
        itemCount: _demos.length,
        itemBuilder: (context, index) {
          var demo = _demos[index];
          return _DemoCard(demo: demo);
        },
      ),
    );
  }
}

class _DemoCard extends StatelessWidget {
  const _DemoCard({required this.demo});

  final _Demo demo;

  @override
  Widget build(BuildContext context) {
    var scheme = context.colorScheme;
    return Card(
      elevation: 0,
      shape: RoundedRectangleBorder(
        borderRadius: BorderRadius.circular(12),
        side: BorderSide(color: scheme.outlineVariant.withValues(alpha: 0.4)),
      ),
      clipBehavior: Clip.antiAlias,
      child: InkWell(
        onTap: () =>
            Navigator.of(context).push(MaterialPageRoute(builder: demo.builder)),
        child: Padding(
          padding: const EdgeInsets.all(14),
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Container(
                padding: const EdgeInsets.all(12),
                decoration: BoxDecoration(
                  color: scheme.primaryContainer.withValues(alpha: 0.55),
                  shape: BoxShape.circle,
                ),
                child: Icon(demo.icon, size: 28, color: scheme.primary),
              ),
              const SizedBox(height: 10),
              TextTitles.small(context, demo.title),
              const SizedBox(height: 4),
              TextBodies.small(
                context,
                demo.subtitle,
                textAlign: TextAlign.center,
                maxLines: 2,
                overflow: TextOverflow.ellipsis,
              ),
            ],
          ),
        ),
      ),
    );
  }
}