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

import 'package:flutter/material.dart';

import 'embedder_texture_platform_interface.dart';

enum OrientationEvent {
  undefined,
  portrait,
  landscape,
  portraitFlipped,
  landscapeFlipped,
}

class EmbedderTexture extends StatefulWidget {
  const EmbedderTexture({
    super.key,
    required this.width,
    required this.height,
  });

  final double width;
  final double height;

  @override
  State<EmbedderTexture> createState() => _EmbedderTextureState();
}

class _EmbedderTextureState extends State<EmbedderTexture> {
  int _textureID = 0;
  int _cameraWidth = 0;
  int _cameraHeight = 0;
  OrientationEvent _orientation = OrientationEvent.undefined;

  @override
  initState() {
    super.initState();
    EmbedderTexturePlatform.instance
        .create(widget.width, widget.height)
        .then((data) => setState(() {
              if (mounted) {
                _textureID = data['textureId']!;
                _cameraWidth = data['width']!;
                _cameraHeight = data['height']!;

                switch (data['orientation']!) {
                  case 0:
                    _orientation = OrientationEvent.portrait;
                    break;
                  case 90:
                    _orientation = OrientationEvent.landscape;
                    break;
                  case 180:
                    _orientation = OrientationEvent.portraitFlipped;
                    break;
                  case 270:
                    _orientation = OrientationEvent.landscapeFlipped;
                    break;
                  default:
                    _orientation = OrientationEvent.undefined;
                }

                debugPrint(data.toString());
              }
            }));

    EmbedderTexturePlatform.instance.onChangeOrientation().listen((event) {
      setState(() {
        if (mounted) {
          _orientation = event;
        }
      });
    });
  }

  @override
  void dispose() {
    super.dispose();
    EmbedderTexturePlatform.instance.remove(_textureID);
  }

  // @override
  // Widget build(BuildContext context) {
  //   if (_textureID != 0) {
  //     double w = 0;
  //     double h = 0;

  //     if (MediaQuery.of(context).orientation == Orientation.portrait) {
  //       w = _cameraWidth * widget.height / (widget.width - 40);
  //       h = widget.width - 40;
  //     } else {
  //       w = _cameraHeight.toDouble();
  //       h = widget.height - 40 - 56;
  //     }

  //     return Container(
  //       color: Colors.black,
  //       width: widget.width,
  //       height: widget.height,
  //       child: RotationTransition(
  //         turns: AlwaysStoppedAnimation(
  //           _orientation == OrientationEvent.portrait ? 90 / 360 : 0,
  //         ),
  //         child: SizedBox(
  //           width: w,
  //           height: h,
  //           child: Texture(textureId: _textureID),
  //         ),
  //       ),
  //     );
  //   }
  //   return const SizedBox.shrink();
  // }

  @override
  Widget build(BuildContext context) {
    if (_textureID != 0) {
      double w = 0;
      double h = 0;

      if (_orientation == OrientationEvent.portrait ||
          _orientation == OrientationEvent.portraitFlipped) {
        w = _cameraWidth * widget.height / (widget.width - 40);
        h = widget.width - 40;
      } else {
        w = _cameraHeight.toDouble();
        h = widget.height - 40 - 56;
      }

      AlwaysStoppedAnimation<double>? turns;

      switch (_orientation) {
        case OrientationEvent.portrait:
          turns = const AlwaysStoppedAnimation(90 / 360);
          break;
        case OrientationEvent.portraitFlipped:
          turns = const AlwaysStoppedAnimation(270 / 360);
          break;
        case OrientationEvent.landscapeFlipped:
          turns = const AlwaysStoppedAnimation(180 / 360);
          break;
        default:
          turns = const AlwaysStoppedAnimation(0);
      }

      return Container(
        color: Colors.black,
        width: widget.width,
        height: widget.height,
        child: Center(
          child: RotationTransition(
            turns: turns,
            child: SizedBox(
              width: w,
              height: h,
              child: Texture(textureId: _textureID),
            ),
          ),
        ),
      );
    }
    return const SizedBox.shrink();
  }
}