Dynamic data on custom shapes - flutter

Question

I want to build an application where for one of my designs I would like to populate shapes with dynamic data. These will be custom shapes where I have two different shapes and they alternate one below the other. So I have a left shape and then the next one will be a right shape and so on. Is is possible to create this in Flutter and how would I do it?

Answer 1

Here is one way of doing it. I have simplify the shape with my custom triangle shape created with CustomPainter so you will have to modify it to your needs.
ListView(
children: <Widget>[
OverflowTitle(color: Colors.green),
OverflowTitle(color: Colors.blue),
OverflowTitle(color: Colors.red)
],
);
and custom overflow title
class OverflowTitle extends StatelessWidget {
final Color color;
const OverflowTitle({this.color});
#override
Widget build(BuildContext context) {
return Container(
width: double.infinity,
height: 50,
child: OverflowBox(
alignment: Alignment.bottomCenter,
minHeight: 50,
maxHeight: 70,
child: Container(
height: 60,
child: CustomPaint(
painter: TrianglePainter(
strokeColor: color,
),
child: Text(
'NO1',
textAlign: TextAlign.center,
),
),
),
),
);
}
}
Here is output
Let me know if you need more help with it...
UPDATE
here is my custom triangle painter
import 'package:flutter/material.dart';
enum Direction { Up, Down, Left, Right }
class TrianglePainter extends CustomPainter {
final Color strokeColor;
final Direction direction;
TrianglePainter({this.strokeColor = Colors.white, this.direction});
#override
void paint(Canvas canvas, Size size) {
Paint paint = Paint()
..color = strokeColor
..style = PaintingStyle.fill;
canvas.drawPath(getTrianglePath(size.width, size.height), paint);
}
Path getTrianglePath(double x, double y) {
if (direction == Direction.Right) {
return Path()
..moveTo(0, y)
..lineTo(x, y / 2)
..lineTo(0, 0)
..lineTo(0, y);
} else if (direction == Direction.Left) {
return Path()
..moveTo(x, 0)
..lineTo(0, y / 2)
..lineTo(x, y)
..lineTo(x, 0);
} else if (direction == Direction.Down) {
return Path()
..moveTo(0, 0)
..lineTo(x / 2, y)
..lineTo(x, 0)
..lineTo(0, 0);
} else {
return Path()
..moveTo(0, y)
..lineTo(x / 2, 0)
..lineTo(x, y)
..lineTo(0, y);
}
}
#override
bool shouldRepaint(TrianglePainter oldDelegate) {
return oldDelegate.strokeColor != strokeColor;
}
}