addLayer method

String addLayer({
  1. required String text,
  2. required Offset position,
  3. Color color = Colors.blue,
  4. double fontSize = 32.0,
})

添加文本图层

Implementation

String addLayer({
  required String text,
  required Offset position,
  Color color = Colors.blue,
  double fontSize = 32.0,
}) {
  final String id = DateTime.now().millisecondsSinceEpoch.toString();
  final layer = TextLayerData(
    id: id,
    text: text,
    position: position,
    color: color,
    fontSize: fontSize,
  );
  _layers[id] = layer;
  return id;
}