SVGs are not rendered

[TDuffinNTU]

Problem

I've noticed that vector graphics don't render at all.

Try the Github reference markdown for an example (very bottom of the markdown).

You could also use these W3C examples for SVG validation.

Expected

The SVG images render as expected

Actual

Nothing renders

Other notes

From skimming the code, it looks like kDefaultImageBuilder should be fine to support SvgPicture from flutter_svg. This is an official flutter library, so IMO wouldn't be bad to depend on! But if not, an extension package could be worth considering...

[TDuffinNTU]

In fact, you can support them using the image builder override like so:

imageBuilder: (uri, title, alt) {
        // Ugly hack to support .svg files
        if (uri.path.toLowerCase().endsWith('.svg')) {
          return SvgPicture.network(
            uri.toString(),
            semanticsLabel: alt,
          );
        }
        return Image.network(
          uri.toString(),
          semanticLabel: alt,
        );
      }

However, this means having to handle regular image widgets yourself instead of with kDefaultImageBuilder, so some of the work you've done to support 'em is wasted!}

Alternatively, provide the default builder as an argument in the callback, that way you can optionally defer back to the default impl. depending on the image :)

Further idea, but if you're relying on the http client of the underlying Image.network() widget, maybe it's worth running the request to gather the mimetype instead of my crude "what does the url suggest the image is?" approach.