Chat Bubble In Flutter

chat Bubble In Flutter :

Screenshot :

import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'package:flutter/rendering.dart';
import 'package:flutter/widgets.dart';

void main() => runApp(MyApp());

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
        home: Scaffold(
            appBar: AppBar(
              title: const Text('Flutter Chat Bubble'),
            ),
            body: Container(
                padding: EdgeInsets.all(20),
                child: BubbleMessage(
                    painter: BubblePainter(),
                    child: Container(
                        constraints: BoxConstraints(
                          maxWidth: 250.0,
                          minWidth: 50.0,
                        ),
                        padding: EdgeInsets.symmetric(
                            horizontal: 15.0, vertical: 6.0),
                        child: Text('Flutter Tutorial',
                            softWrap: true,
                            style: TextStyle(
                              color: Colors.white,
                              fontSize: 16.0,
                            )))))));
  }
}

// Define a CustomPainter to paint the bubble background.
class BubblePainter extends CustomPainter {
  @override
  void paint(Canvas canvas, Size size) {
    final Paint paint = Paint()
      ..color = Color(0xff188aff)
      ..style = PaintingStyle.fill;
    final Path bubble = Path()
      ..moveTo(size.width - 22.0, size.height)
      ..lineTo(17.0, size.height)
      ..cubicTo(
          7.61, size.height, 0.0, size.height - 7.61, 0.0, size.height - 17.0)
      ..lineTo(0.0, 17.0)
      ..cubicTo(0.0, 7.61, 7.61, 0.0, 17.0, 0.0)
      ..lineTo(size.width - 21, 0.0)
      ..cubicTo(size.width - 11.61, 0.0, size.width - 4.0, 7.61,
          size.width - 4.0, 17.0)
      ..lineTo(size.width - 4.0, size.height - 11.0)
      ..cubicTo(size.width - 4.0, size.height - 1.0, size.width, size.height,
          size.width, size.height)
      ..lineTo(size.width + 0.05, size.height - 0.01)
    /*  ..cubicTo(size.width - 4.07, size.height + 0.43, size.width - 8.16,
          size.height - 1.06, size.width - 11.04, size.height - 4.04)*/
      ..cubicTo(size.width - 16.0, size.height, size.width - 19.0, size.height,
          size.width - 22.0, size.height)
      ..close();
    canvas.drawPath(bubble, paint);
  }

  @override
  bool shouldRepaint(BubblePainter oldPainter) => true;
}

class BubbleMessage extends SingleChildRenderObjectWidget {
  BubbleMessage({
    Key key,
    this.painter,
    Widget child,
  }) : super(key: key, child: child);

  final CustomPainter painter;

  @override
  RenderCustomPaint createRenderObject(BuildContext context) {
    return RenderCustomPaint(
      painter: painter,
    );
  }

  @override
  void updateRenderObject(
      BuildContext context, RenderCustomPaint renderObject) {
    renderObject..painter = painter;
  }
}