twonly-app/lib/src/views/camera/camera_preview_components/camera_preview.dart

import 'package:camera/camera.dart';
import 'package:flutter/material.dart';
import 'package:screenshot/screenshot.dart';
import 'package:twonly/src/views/camera/camera_preview_components/main_camera_controller.dart';
import 'package:twonly/src/views/components/media_view_sizing.dart';

class MainCameraPreview extends StatelessWidget {
  const MainCameraPreview({
    required this.mainCameraController,
    super.key,
  });

  final MainCameraController mainCameraController;

  @override
  Widget build(BuildContext context) {
    if (mainCameraController.cameraController == null ||
        !mainCameraController.cameraController!.value.isInitialized) {
      return Container();
    }
    return Positioned.fill(
      child: MediaViewSizing(
        requiredHeight: 0,
        additionalPadding: 59,
        bottomNavigation: Container(),
        child: Screenshot(
          controller: mainCameraController.screenshotController,
          child: AspectRatio(
            aspectRatio: 9 / 16,
            child: ClipRect(
              child: FittedBox(
                fit: BoxFit.cover,
                child: SizedBox(
                  width: mainCameraController
                      .cameraController!.value.previewSize!.height,
                  height: mainCameraController
                      .cameraController!.value.previewSize!.width,
                  child: CameraPreview(
                    mainCameraController.cameraController!,
                    child: mainCameraController.customPaint,
                  ),
                ),
              ),
            ),
          ),
        ),
      ),
    );
  }
}