span method

Implementation

@override
InlineSpan span(
  BuildContext context,
  String text,
  final GptMarkdownConfig config,
) {
  var match = exp.firstMatch(text.trim());
  double? height;
  double? width;
  if (match?[1] != null) {
    var size = RegExp(
      r"^([0-9]+)?x?([0-9]+)?",
    ).firstMatch(match![1].toString().trim());
    width = double.tryParse(size?[1]?.toString().trim() ?? 'a');
    height = double.tryParse(size?[2]?.toString().trim() ?? 'a');
  }
  final Widget image;
  if (config.imageBuilder != null) {
    image = config.imageBuilder!(context, '${match?[2]}');
  } else {
    image = SizedBox(
      width: width,
      height: height,
      child: Image(
        image: NetworkImage("${match?[2]}"),
        loadingBuilder: (
          BuildContext context,
          Widget child,
          ImageChunkEvent? loadingProgress,
        ) {
          if (loadingProgress == null) {
            return child;
          }
          return CustomImageLoading(
            progress:
                loadingProgress.expectedTotalBytes != null
                    ? loadingProgress.cumulativeBytesLoaded /
                        loadingProgress.expectedTotalBytes!
                    : 1,
          );
        },
        fit: BoxFit.fill,
        errorBuilder: (context, error, stackTrace) {
          return const CustomImageError();
        },
      ),
    );
  }
  return WidgetSpan(alignment: PlaceholderAlignment.bottom, child: image);
}