span method

@override InlineSpan span(BuildContext context, String text, GptMarkdownConfig config)

Implementation

@override
InlineSpan span(
  BuildContext context,
  String text,
  final GptMarkdownConfig config,
) {
  var p0 = exp.firstMatch(text.trim());
  p0?.group(0);
  String mathText = p0?[1]?.toString() ?? "";
  var workaround = config.latexWorkaround ?? (String tex) => tex;
  var builder = config.latexBuilder ??
      (BuildContext context, String tex, TextStyle textStyle, bool inline) =>
          Math.tex(
            tex,
            textStyle: textStyle,
            mathStyle: MathStyle.display,
            textScaleFactor: 1,
            settings: const TexParserSettings(
              strict: Strict.ignore,
            ),
            options: MathOptions(
              sizeUnderTextStyle: MathSize.large,
              color: config.style?.color ??
                  Theme.of(context).colorScheme.onSurface,
              fontSize: config.style?.fontSize ??
                  Theme.of(context).textTheme.bodyMedium?.fontSize,
              mathFontOptions: FontOptions(
                fontFamily: "Main",
                fontWeight: config.style?.fontWeight ?? FontWeight.normal,
                fontShape: FontStyle.normal,
              ),
              textFontOptions: FontOptions(
                fontFamily: "Main",
                fontWeight: config.style?.fontWeight ?? FontWeight.normal,
                fontShape: FontStyle.normal,
              ),
              style: MathStyle.display,
            ),
            onErrorFallback: (err) {
              return Text(
                workaround(mathText),
                textDirection: config.textDirection,
                style: textStyle.copyWith(
                    color: (!kDebugMode)
                        ? null
                        : Theme.of(context).colorScheme.error),
              );
            },
          );
  return WidgetSpan(
    alignment: PlaceholderAlignment.baseline,
    baseline: TextBaseline.alphabetic,
    child: builder(context, workaround(mathText),
        config.style ?? const TextStyle(), true),
  );
}