flutter-plugins/packages/embedder_texture/lib/embedder_texture_method_channel.dart

import 'package:embedder_texture/embedder_texture.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/services.dart';

import 'embedder_texture_platform_interface.dart';

/// An implementation of [LinuxOpenglPlatform] that uses method channels.
class MethodChannelEmbedderTexture extends EmbedderTexturePlatform {
  /// The method channel used to interact with the native platform.
  @visibleForTesting
  final methodChannel = const MethodChannel('embedder_texture');

  @override
  Future<Map<dynamic, dynamic>> create(double width, double height) async {
    final data =
        await methodChannel.invokeMethod<Map<dynamic, dynamic>?>('create', {
      'width': width.round(),
      'height': height.round(),
    });
    return data ?? {};
  }

  @override
  Future<bool> remove(int textureId) async {
    return await methodChannel.invokeMethod<bool>('remove', {
          'textureId': textureId,
        }) ??
        false;
  }

  @override
  Stream<OrientationEvent> onChangeOrientation() async* {
    await for (final orientation
        in const EventChannel('embedder_texture_orientation')
            .receiveBroadcastStream()) {
      switch (orientation) {
        case 0:
          yield OrientationEvent.portrait;
          break;
        case 90:
          yield OrientationEvent.landscape;
          break;
        case 180:
          yield OrientationEvent.portraitFlipped;
          break;
        case 270:
          yield OrientationEvent.landscapeFlipped;
          break;
        default:
          yield OrientationEvent.undefined;
      }
    }
  }
}