iconToBytes static method

Implementation

static Future<Uint8List?> iconToBytes(
  IconData iconData, {
  double size = 24.0,
  Color color = Colors.black,
}) async {
  try {
    // The higher the scale, the better the quality; using a very high scale may
    // impact performance!
    final double scale = 3.0;
    final double scaledSize = size * scale;

    final recorder = ui.PictureRecorder();
    final canvas = Canvas(recorder);

    final textPainter = TextPainter(textDirection: TextDirection.ltr);

    // Text using the icon data
    textPainter.text = TextSpan(
      text: String.fromCharCode(iconData.codePoint),
      style: TextStyle(
        fontSize: scaledSize,
        fontFamily: iconData.fontFamily,
        package: iconData.fontPackage,
        color: color,
        fontFeatures: [const FontFeature.enable('liga')], // Use ligatures :)
      ),
    );

    textPainter.layout();

    final double dx = (scaledSize - textPainter.width) / 2;
    final double dy = (scaledSize - textPainter.height) / 2;

    textPainter.paint(canvas, Offset(dx, dy));

    final picture = recorder.endRecording();

    final img = await picture.toImage(scaledSize.toInt(), scaledSize.toInt());

    final byteData = await img.toByteData(format: ui.ImageByteFormat.png);
    return byteData?.buffer.asUint8List();
  } catch (e) {
    debugPrint('Error converting icon to bytes: $e');
    return null;
  }
}