89 lines
2.6 KiB
Dart
89 lines
2.6 KiB
Dart
import 'package:flutter/material.dart';
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import '../models/category.dart';
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import 'cute_icon.dart';
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/// 分类 emoji 宫格（手动记账页与账单编辑页共用）
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///
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/// 这是纯同步组件：分类列表的加载/错误/空态由调用方用 AsyncValue.when 处理，
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/// 组件本身不关心 type 之类的业务参数。
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class CategoryPickerGrid extends StatelessWidget {
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const CategoryPickerGrid({
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super.key,
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required this.categories,
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required this.selectedId,
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required this.onSelect,
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this.crossAxisCount = 5,
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this.emptyText = '暂无分类',
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});
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final List<Category> categories;
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final int? selectedId;
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final ValueChanged<int> onSelect;
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final int crossAxisCount;
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final String emptyText;
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@override
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Widget build(BuildContext context) {
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if (categories.isEmpty) {
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return Container(
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padding: const EdgeInsets.all(16),
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decoration: BoxDecoration(
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color: Colors.white.withValues(alpha: 0.8),
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borderRadius: BorderRadius.circular(14),
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),
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child: Text(emptyText, style: const TextStyle(color: Color(0xFF8D6E63))),
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);
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}
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return GridView.builder(
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shrinkWrap: true,
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physics: const NeverScrollableScrollPhysics(),
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gridDelegate: SliverGridDelegateWithFixedCrossAxisCount(
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crossAxisCount: crossAxisCount,
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mainAxisSpacing: 10,
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crossAxisSpacing: 6,
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childAspectRatio: 0.85,
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),
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itemCount: categories.length,
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itemBuilder: (context, i) => _item(categories[i]),
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);
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}
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Widget _item(Category category) {
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final active = selectedId == category.id;
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return GestureDetector(
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onTap: () => onSelect(category.id),
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child: Column(
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children: [
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AnimatedContainer(
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duration: const Duration(milliseconds: 150),
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width: 52,
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height: 52,
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decoration: BoxDecoration(
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shape: BoxShape.circle,
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color: active ? const Color(0xFFC8956E) : Colors.white,
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border: Border.all(
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color: active ? const Color(0xFF5D4037) : const Color(0xFFE0C9A6),
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),
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),
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alignment: Alignment.center,
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child: CuteIcon(category.icon, size: 26),
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),
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const SizedBox(height: 4),
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Text(
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category.name,
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maxLines: 1,
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overflow: TextOverflow.ellipsis,
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style: TextStyle(
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fontSize: 12,
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color: active ? const Color(0xFF5D4037) : const Color(0xFF8D6E63),
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fontWeight: active ? FontWeight.bold : FontWeight.normal,
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),
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),
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],
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),
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);
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}
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}
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