loadImage method

void loadImage(VoidCallback onComplete)

Load image from disk cache first, if not found then load from network. onComplete is called when imageBytes become available.

Implementation

void loadImage(VoidCallback onComplete) {
  if (this.frames != null) {
    this.state = LoadState.success;
    onComplete();
  }

  final fileStream = DefaultCacheManager().getFileStream(this.url!,
      headers: this.requestHeaders as Map<String, String>?);

  fileStream.listen(
    (FileResponse fileInfo) {
      // the reason for this is that, when the cache manager fetches
      // the image again from network, the provided `onComplete` should
      // not be called again
      if (this.frames != null) {
        return;
      }

      this.state = LoadState.success;

      /// todo fix

      // PaintingBinding.instance!.instantiateImageCodec(fileInfo.originalUrl).then((codec) {
      //   this.frames = codec;
      //   onComplete();
      // }, onError: (error) {
      //   this.state = LoadState.failure;
      //   onComplete();
      // });
    },
    onError: (error) {
      this.state = LoadState.failure;
      onComplete();
    },
  );
}