AiKeyboard2025/lib/utils/image_picker_util.dart

import 'package:flutter/cupertino.dart';
import 'package:wechat_assets_picker/wechat_assets_picker.dart';

import '../resource/colors.gen.dart';
import '../resource/string.gen.dart';

/// 本地选择图片工具类
class ImagePickerUtil {
  static final Color _themeColor = ColorName.colorBrand;

  /// 选择图片
  static Future<void> pickImage(
    BuildContext context, {
    required int maxAssetsCount,
    List<AssetEntity> selectedAssets = const [],
  }) async {
    await AssetPicker.pickAssets(
      context,
      pickerConfig: AssetPickerConfig(
        // 最大选择数量
        maxAssets: maxAssetsCount,
        // 已选择的图片列表
        selectedAssets: selectedAssets,
        // 自定义按钮文字
        textDelegate: const CustomChineseDelegate(),
        // 主题
        pickerTheme: AssetPicker.themeData(
          // 主题色
          _themeColor,
          // 深色默认
          light: false,
        ),
        // 设置为不能预览的模式
        specialPickerType: SpecialPickerType.noPreview,
        // 只能选取图片类型
        requestType: RequestType.image,
        // 关闭拽托选择
        dragToSelect: false,
        // 实现最近相册的名字显示
        pathNameBuilder:
            (AssetPathEntity path) => switch (path) {
              final p when p.isAll => StringName.recently,
              _ => path.name,
            },
      ),
    );
  }

  /// 跳转到图片预览
  static Future<List<AssetEntity>> goImagePreview(
    BuildContext context,
    List<AssetEntity> previewAssets,
    int index,
  ) async {
    final List<AssetEntity> result =
        await AssetPickerViewer.pushToViewer(
          context,
          // 当前预览的索引位置
          currentIndex: index,
          // 资源列表
          previewAssets: previewAssets,
          // 主题色
          themeData: AssetPicker.themeData(_themeColor),
        ) ??
        [];
    return result;
  }
}

/// 自定义按钮文字
class CustomChineseDelegate extends AssetPickerTextDelegate {
  const CustomChineseDelegate();

  @override
  String get confirm => StringName.nextStep;
}