Implementation
static Future<Uint8List> createSingleMarker({
required double dimension,
Color markerColor = Colors.blue,
}) async {
final pictureRecorder = PictureRecorder();
final canvas = Canvas(pictureRecorder);
const width = 64;
const height = 82;
final markerFill = Paint()
..style = PaintingStyle.fill
..color = markerColor;
final paintPath = Path()
..moveTo(
width * 0.01388753,
height * 0.4148553,
)
..cubicTo(
width * 0.01388753,
height * 0.1904737,
width * 0.2287017,
height * 0.004386500,
width * 0.4999983,
height * 0.004386500,
)
..cubicTo(
width * 0.7712950,
height * 0.004386500,
width * 0.9861100,
height * 0.1904737,
width * 0.9861100,
height * 0.4148553,
)
..cubicTo(
width * 0.9861100,
height * 0.4868171,
width * 0.9408267,
height * 0.5715553,
width * 0.8838517,
height * 0.6510763,
)
..cubicTo(
width * 0.8259550,
height * 0.7318842,
width * 0.7520617,
height * 0.8125539,
width * 0.6872750,
height * 0.8777763,
)
..lineTo(
width * 0.6851133,
height * 0.8799513,
)
..cubicTo(
width * 0.6534917,
height * 0.9117908,
width * 0.6265517,
height * 0.9389145,
width * 0.6004300,
height * 0.9576487,
)
..cubicTo(
width * 0.5719300,
height * 0.9780868,
width * 0.5405017,
height * 0.9914684,
width * 0.4999983,
height * 0.9914684,
)
..cubicTo(
width * 0.4594950,
height * 0.9914684,
width * 0.4280683,
height * 0.9780868,
width * 0.3995683,
height * 0.9576487,
)
..cubicTo(
width * 0.3734450,
height * 0.9389145,
width * 0.3465067,
height * 0.9117921,
width * 0.3148833,
height * 0.8799526,
)
..lineTo(
width * 0.3127233,
height * 0.8777763,
)
..cubicTo(
width * 0.2479367,
height * 0.8125539,
width * 0.1740417,
height * 0.7318842,
width * 0.1161453,
height * 0.6510763,
)
..cubicTo(
width * 0.05917117,
height * 0.5715553,
width * 0.01388753,
height * 0.4868171,
width * 0.01388753,
height * 0.4148553,
)
..close()
..moveTo(
width * 0.4999983,
height * 0.2675447,
)
..cubicTo(
width * 0.3849400,
height * 0.2675447,
width * 0.2916650,
height * 0.3411816,
width * 0.2916650,
height * 0.4320184,
)
..cubicTo(
width * 0.2916650,
height * 0.5228539,
width * 0.3849400,
height * 0.5964921,
width * 0.4999983,
height * 0.5964921,
)
..cubicTo(
width * 0.6150583,
height * 0.5964921,
width * 0.7083317,
height * 0.5228539,
width * 0.7083317,
height * 0.4320184,
)
..cubicTo(
width * 0.7083317,
height * 0.3411816,
width * 0.6150583,
height * 0.2675447,
width * 0.4999983,
height * 0.2675447,
)
..close();
canvas.drawPath(paintPath, markerFill);
final circleFill = Paint()
..style = PaintingStyle.fill
..color = ColorName.white;
const circleOffset = 32.0;
const circleSize = 15.0;
canvas.drawCircle(const Offset(circleOffset, circleOffset), circleSize, circleFill);
final image = await pictureRecorder.endRecording().toImage(
dimension.toInt(),
dimension.toInt(),
);
final data = await image.toByteData(format: ImageByteFormat.png);
return data!.buffer.asUint8List();
}
