getImage static method

Implementation

static dynamic getImage(String? url, bool animate,
    {Scope? scope,
    Color? color,
    String? defaultImage,
    double? width,
    double? height,
    String? fit,
    String? filter,
    bool fade = true,
    int? fadeDuration}) {
  Widget? image;

  try {
    // parse the url
    Uri? uri = URI.parse(url);

    // bad url?
    if (uri == null) {
      if (defaultImage != null) {
        if (defaultImage.toLowerCase().trim() == 'none') {
          return Container();
        } else {
          return getImage(defaultImage, animate,
              defaultImage: null,
              fit: fit,
              width: width,
              height: height,
              filter: filter,
              fade: fade,
              fadeDuration: fadeDuration);
        }
      }
      return const Icon(Icons.broken_image_outlined,
          size: 36, color: Colors.grey);
    }

    // error handler
    Widget errorHandler(
        BuildContext content, Object object, StackTrace? stacktrace) {
      Log().debug(
          "Bad image url (${url?.substring(0, min(100, url.length))}. Error is $object",
          caller: "errorHandler");
      if (defaultImage == null) {
        return const Icon(Icons.broken_image_outlined,
            size: 36, color: Colors.grey);
      }
      if (defaultImage.toLowerCase().trim() == 'none') return Container();
      return getImage(defaultImage, animate,
          defaultImage: null,
          fit: fit,
          width: width,
          height: height,
          filter: filter,
          fade: fade,
          fadeDuration: fadeDuration);
    }

    // get image type
    switch (uri.scheme) {
      /// data uri
      case "data":
        if (uri.data != null) {
          image = FadeInImage(
              placeholder: MemoryImage(placeholder),
              image: MemoryImage(uri.data!.contentAsBytes()),
              fit: getFit(fit),
              width: width,
              height: height,
              fadeInDuration: Duration(milliseconds: fadeDuration ?? 300),
              imageErrorBuilder: errorHandler);
        }
        break;

      /// blob image from camera or file picker
      case "blob":
        image = FmlEngine.isWeb
            ? Image.network(url!, fit: getFit(fit))
            : Image.file(File(url!), fit: getFit(fit));
        break;

      /// file image
      case "file":

        // file picker and camera return uri references as file:C:/...?
        dynamic file = Platform.getFile(url!.replaceFirst("file:", ""));

        // user defined local files?
        file ??= Platform.getFile(uri.asFilePath());

        // no file found
        if (file == null) break;

        // svg image?
        if (uri.pageExtension == "svg") {
          image = SvgPicture.file(file!,
              fit: getFit(fit),
              width: width,
              height: height,
              colorFilter: color != null
                  ? ColorFilter.mode(color, BlendMode.srcIn)
                  : null);
        } else {
          image = Image.file(file, fit: getFit(fit));
        }
        break;

      /// asset image
      case "assets":
        var assetpath = "${uri.scheme}/${uri.host}${uri.path}";

        // svg image?
        if (uri.pageExtension == "svg") {
          image = SvgPicture.asset(assetpath,
              fit: getFit(fit),
              width: width,
              height: height,
              colorFilter: color != null
                  ? ColorFilter.mode(color, BlendMode.srcIn)
                  : null);
        } else {
          image = Image.asset(assetpath,
              fit: getFit(fit),
              width: width,
              height: height,
              errorBuilder: errorHandler);
        }
        break;

      /// web image
      default:
        if (uri.pageExtension == "svg") {
          image = SvgPicture.network(uri.url,
              fit: getFit(fit),
              width: width,
              height: height,
              colorFilter: color != null
                  ? ColorFilter.mode(color, BlendMode.srcIn)
                  : null);
        } else {
          if (animate) {
            image = FadeInImage.memoryNetwork(
              placeholder: placeholder,
              image: uri.url,
              fit: getFit(fit),
              width: width,
              height: height,
              fadeInDuration: Duration(milliseconds: fadeDuration ?? 300),
              imageErrorBuilder: errorHandler,
            );
          } else {
            image = Image.network(uri.url,
                fit: getFit(fit), width: width, height: height);
          }
        }
        break;
    }
  } catch (e) {
    Log().error("Error decoding image from $url. Error is $e");
  }

  // return widget
  return image ??
      Image.memory(placeholder,
          fit: getFit(fit), width: width, height: height);
}