build method

@override Widget build(BuildContext context)

Builds the widget.

Implementation

@override
Widget build(BuildContext context) =>
    FutureBuilder<(GoogleVision, ImageDetail)>(
        future: waitConcurrently<GoogleVision, ImageDetail>(googleVision,
            imageProvider.getImageDetails(format: ImageByteFormat.png)),
        builder: (BuildContext context,
            AsyncSnapshot<(GoogleVision, ImageDetail)> snapshot) {
          GoogleVision? googleVision;

          ImageDetail? imageDetail;

          if (snapshot.hasError) {
            return onError != null
                ? onError!(snapshot.error!)
                : Text(snapshot.error.toString());
          }

          if (snapshot.hasData) {
            googleVision = snapshot.data!.$1;

            imageDetail = snapshot.data!.$2;

            return FutureBuilder<AnnotatedResponses>(
              future: googleVision.annotate(
                  requests: AnnotationRequests(requests: [
                AnnotationRequest(
                    jsonImage: JsonImage(byteBuffer: imageDetail.byteBuffer),
                    features: features)
              ])),
              builder: (BuildContext context,
                      AsyncSnapshot<AnnotatedResponses> snapshot) =>
                  builder(
                context,
                snapshot,
                imageDetail!,
              ),
            );
          }

          return onLoading != null
              ? onLoading!()
              : const CircularProgressIndicator();
        });