Fllutter - How to create a custom shape - flutter

Question

the bellow image that is what i want to draw it using CustomPainter with LinearGradient and have shadow
already i draw bellow circle shape but not same and have LinearGradient
class CurvePainter extends CustomPainter {
#override
void paint(Canvas canvas, Size size) {
Rect rect = new Rect.fromCircle(
center: new Offset(165.0, 55.0),
radius: 180.0,
);
final Gradient gradient = new LinearGradient(
colors: <Color>[
const Color(0xFF2151a6),
const Color(0xFF3377f4),
],
);
var paint = Paint()..shader = gradient.createShader(rect);
paint.color = Colors.green[800];
paint.style = PaintingStyle.fill; // Change this to fill
var path = Path();
path.moveTo(0, size.height * 0.35);
path.moveTo(0, size.height * 0.3);
path.quadraticBezierTo(
size.width / 2, size.height / 2.4, size.width, size.height * 0.35);
path.lineTo(size.width, 0);
path.lineTo(0, 0);
canvas.drawPath(path, paint);
}
#override
bool shouldRepaint(CustomPainter oldDelegate) {
return true;
}
}

Answer 1

I think I drew it well
try this:
class CurvePainter extends CustomPainter {
#override
void paint(Canvas canvas, Size size) {
Rect rect = new Rect.fromCircle(
center: new Offset(165.0, 55.0),
radius: 180.0,
);
final Gradient gradient = new LinearGradient(
colors: <Color>[
const Color(0xFF2151a6),
const Color(0xFF3377f4),
],
);
var paint = Paint()..shader = gradient.createShader(rect);
paint.color = Colors.green[800];
paint.style = PaintingStyle.fill; // Change this to fill
var path = Path();
path.moveTo(0, size.height * 0.32);
path.lineTo(size.width * 0.20, size.height * 0.34);
path.quadraticBezierTo( size.width * 0.30, size.height * 0.35,
size.width * 0.40, size.height * 0.34 );
path.lineTo(size.width*0.9, size.height * 0.26);
path.quadraticBezierTo( size.width, size.height * 0.24,
size.width , size.height * 0.20);
path.lineTo(size.width, 0);
path.lineTo(0 , 0);
canvas.drawPath(path, paint);
}
#override
bool shouldRepaint(CustomPainter oldDelegate) {
return true;
}
}