YYHome/packages/cs_plugin_platform/lib/engine/media/album_engine.dart

import 'package:cs_resources/theme/app_colors_theme.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:wechat_assets_picker/wechat_assets_picker.dart';

/*
 * 本地图库的引擎封装,目前用的 wechat_assets_picker 插件
 */
class AlbumEngine {
  /// 选择图片
  static Future<List<AssetEntity>?> selectImage(
    BuildContext context, {
    int maxAssets = 9,
    List<AssetEntity>? selected,
    int filterMinWidth = 100,
    int filterMaxWidth = 100000,
    int filterMinHeight = 100,
    int filterMaxHeight = 100000,
  }) async {
    const Color themeColor = Color(0xff00bc56);

    FilterOptionGroup filterOptions = FilterOptionGroup()
      ..setOption(
        AssetType.image,
        FilterOption(
          sizeConstraint: SizeConstraint(
            minWidth: filterMinWidth,
            maxWidth: filterMaxWidth,
            minHeight: filterMinHeight,
            maxHeight: filterMaxHeight,
          ),
        ),
      );

    return AssetPicker.pickAssets(
      context,
      pickerConfig: AssetPickerConfig(
        requestType: RequestType.image,
        selectedAssets: selected,
        maxAssets: maxAssets,
        filterOptions: filterOptions,
        gridCount: 4,
        pageSize: 40,
        pickerTheme: ThemeData(
          primaryColor: themeColor,
          primaryColorDark: Colors.white,
          primaryColorLight: themeColor,
          brightness: Brightness.dark,
          primarySwatch: _createMaterialColor(themeColor),
          textSelectionTheme: const TextSelectionThemeData(cursorColor: themeColor),
          appBarTheme: AppBarTheme(
            systemOverlayStyle: SystemUiOverlayStyle.dark.copyWith(
              statusBarColor: Colors.transparent,
              statusBarBrightness: Brightness.dark,
              statusBarIconBrightness: Brightness.light,
            ),
          ),
        ),
      ),
    );
  }

  static MaterialColor _createMaterialColor(Color color) {
    final strengths = <double>[.05];
    final swatch = <int, Color>{};
    for (int i = 1; i < 10; i++) {
      strengths.add(0.1 * i);
    }

    for (final strength in strengths) {
      final double ds = 0.5 - strength;
      swatch[(strength * 1000).round()] = Color.fromRGBO(
        color.red + ((ds < 0 ? color.red : (255 - color.red)) * ds).round(),
        color.green + ((ds < 0 ? color.green : (255 - color.green)) * ds).round(),
        color.blue + ((ds < 0 ? color.blue : (255 - color.blue)) * ds).round(),
        1,
      );
    }
    return MaterialColor(color.value, swatch);
  }

  /// 选择视频
// static Future<List<AssetEntity>?> selectVideo(
//   BuildContext context, {
//   int maxAssets = 1,
//   List<AssetEntity>? selected,
//   int filterMinWidth = 100,
//   int filterMaxWidth = 100000,
//   int filterMinHeight = 100,
//   int filterMaxHeight = 100000,
//   int filterMaxSeconds = 60, //默认能选择60秒以内的视频
// }) async {
//   FilterOptionGroup filterOptions = FilterOptionGroup()
//     ..setOption(
//       AssetType.video,
//       FilterOption(
//           sizeConstraint: SizeConstraint(
//             minWidth: filterMinWidth,
//             maxWidth: filterMaxWidth,
//             minHeight: filterMinHeight,
//             maxHeight: filterMaxHeight,
//           ),
//           durationConstraint: DurationConstraint(max: Duration(seconds: filterMaxSeconds))),
//     );
//
//   return AssetPicker.pickAssets(
//     context,
//     pickerConfig: AssetPickerConfig(
//       requestType: RequestType.video,
//       selectedAssets: selected,
//       maxAssets: maxAssets,
//       filterOptions: filterOptions,
//       gridCount: 4,
//       pageSize: 40,
//       pickerTheme: ThemeData(
//         brightness: Brightness.dark,
//         appBarTheme: AppBarTheme(
//           systemOverlayStyle: SystemUiOverlayStyle.dark.copyWith(
//             statusBarColor: Colors.transparent,
//             statusBarBrightness: Brightness.dark,
//             statusBarIconBrightness: Brightness.light,
//           ),
//         ),
//       ),
//     ),
//   );
// }
}