downloadResizePicture static method

Implementation

static Future<BitmapDescriptor> downloadResizePicture(
    {required String url, int imageSize = 50}) async {
  final File imageFile = await DefaultCacheManager().getSingleFile(url);
  final ui.PictureRecorder pictureRecorder = ui.PictureRecorder();
  final Canvas canvas = Canvas(pictureRecorder);
  final Uint8List imageUint8List = await imageFile.readAsBytes();
  final ui.Codec codec = await ui.instantiateImageCodec(imageUint8List);
  final ui.FrameInfo imageFI = await codec.getNextFrame();
  paintImage(
      canvas: canvas,
      rect: Rect.fromLTWH(0, 0, imageSize.toDouble(), imageSize.toDouble()),
      image: imageFI.image);
  final image = await pictureRecorder
      .endRecording()
      .toImage(imageSize, (imageSize * 1.1).toInt());
  final data = await image.toByteData(format: ui.ImageByteFormat.png);
  return BitmapDescriptor.fromBytes(data!.buffer.asUint8List());
}