Artifact.fromJson constructor

Artifact.fromJson(
  1. Map<String, dynamic> json
)

Creates an Artifact from JSON data.

json A map containing 'rows', 'cols', and 'data' keys.

Implementation

factory Artifact.fromJson(final Map<String, dynamic> json) {
  // determine the mandatory cols/width of the matrix
  final int cols = (json['cols'] as int?) ?? 0;
  final Artifact artifact = Artifact(cols, 0);
  artifact.font = json['font'] ?? '';
  artifact._matrix = Uint8List.fromList(
    (json['data'] as List<dynamic>).expand((final dynamic row) {
      return row
          .toString()
          .split('')
          .map((cell) => cell == '#' ? _pixelOnValue : _pixelOffValue);
    }).toList(),
  );
  return artifact;
}