flutter/issues/97454

main.dart

import 'package:flutter/material.dart';

void main() {
  runApp(const MainApp());
}

class MainApp extends StatelessWidget {
  const MainApp({Key? key}) : super(key: key);

  static const String _title = 'Flutter Code Sample';

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: _title,
      home: _MyMainWidget(),
    );
  }
}

class _MyMainWidget extends StatefulWidget {
  @override
  State<StatefulWidget> createState() => _MyMainWidgetState();
}

class _MyMainWidgetState extends State<_MyMainWidget> {
  final double _splitRatio = 1.0 - 0.618;

  @override
  Widget build(BuildContext context) {
    const double splitWidth = 2;
    return DefaultTextStyle(
      style: Theme.of(context).textTheme.bodyText2!,
      child: LayoutBuilder(
        builder: (BuildContext context, BoxConstraints viewportConstraints) {
          return SingleChildScrollView(
            child: ConstrainedBox(
              constraints: BoxConstraints(
                  minHeight: viewportConstraints.maxHeight,
                  minWidth: viewportConstraints.maxWidth),
              child: Row(
                mainAxisSize: MainAxisSize.max,
                mainAxisAlignment: MainAxisAlignment.start,
                children: <Widget>[
                  Container(
                    width:
                    viewportConstraints.maxWidth * _splitRatio - splitWidth,
                    height: viewportConstraints.maxHeight,
                    alignment: Alignment.topLeft,
                  ),
                  Container(
                      width: splitWidth,
                      color: Colors.amber,
                      constraints: BoxConstraints(
                          minHeight: viewportConstraints.maxHeight,
                          minWidth: splitWidth)),
                  Container(
                    constraints: BoxConstraints(
                        minHeight: viewportConstraints.maxHeight,
                        minWidth:
                        viewportConstraints.maxWidth * (1.0 - _splitRatio)),
                    color: Colors.purple,
                    alignment: Alignment.topLeft,
                    child: CustomPaint(
                      painter: TextLayoutEnginePainter(),
                      isComplex: true,
                      willChange: true,
                    ),
                  ),
                ],
              ),
            ),
          );
        },
      ),
    );
  }

// Build left Panel widget, containing JSON/XML/Plain text editor and Frame properties configuration
}

class TextLayoutEnginePainter extends CustomPainter {
  TextLayoutEnginePainter();

  @override
  void paint(Canvas canvas, Size size) {
    canvas.save();
    canvas.translate(0, 0);
    canvas.translate(0, 0);
    canvas.translate(0, 0);
    canvas.translate(0, 0);
    canvas.translate(0, 0);
    canvas.translate(0, 8.736328125);
    canvas.translate(0, 8.736328125);
    canvas.scale(0.005859375, -0.005859375);
    canvas.translate(0, 0);
    canvas.scale(1, 1);
    final pathLetterE = Path();
    pathLetterE.moveTo(862, 342);
    pathLetterE.lineTo(1048, 319);
    pathLetterE.cubicTo(1019, 211, 964, 125, 885, 66);
    pathLetterE.cubicTo(806, 7, 704, -24, 581, -24);
    pathLetterE.cubicTo(426, -24, 302, 25, 211, 120);
    pathLetterE.cubicTo(121, 214, 75, 350, 75, 522);
    pathLetterE.cubicTo(75, 700, 122, 840, 213, 938);
    pathLetterE.cubicTo(304, 1036, 425, 1086, 571, 1086);
    pathLetterE.cubicTo(712, 1086, 830, 1037, 919, 941);
    pathLetterE.cubicTo(1008, 845, 1054, 708, 1054, 533);
    pathLetterE.cubicTo(1054, 523, 1053, 506, 1053, 485);
    pathLetterE.lineTo(261, 485);
    pathLetterE.cubicTo(267, 369, 301, 278, 360, 217);
    pathLetterE.cubicTo(419, 156, 494, 124, 582, 124);
    pathLetterE.cubicTo(647, 124, 705, 142, 751, 176);
    pathLetterE.cubicTo(797, 210, 835, 267, 862, 342);
    pathLetterE.close();
    pathLetterE.moveTo(271, 633);
    pathLetterE.lineTo(864, 633);
    pathLetterE.cubicTo(857, 722, 833, 790, 796, 834);
    pathLetterE.cubicTo(739, 903, 664, 938, 573, 938);
    pathLetterE.cubicTo(491, 938, 420, 910, 364, 855);
    pathLetterE.cubicTo(309, 800, 276, 725, 271, 633);
    pathLetterE.close();
    canvas.translate(4099, 0);
    canvas.translate(-4099, -0);
    canvas.scale(1, 1);
    canvas.translate(0, 0);
    canvas.scale(170.66666666666666, -170.66666666666666);
    canvas.translate(0, -8.736328125);
    canvas.translate(0, -8.736328125);
    canvas.translate(0, 0);
    canvas.translate(0, 0);
    canvas.translate(0, 8.736328125);
    canvas.translate(0, 8.736328125);
    canvas.scale(0.005859375, -0.005859375);
    canvas.translate(0, 0);
    canvas.scale(1, 1);
    canvas.translate(0, 0);
    canvas.translate(-0, -0);
    canvas.translate(1366, 0);
    canvas.translate(-1366, -0);
    
    for(var i = 0; i < 100; i ++){      
      canvas.translate(i*1100, 0);
      canvas.drawPath(
          pathLetterE,
          Paint()
            ..style = PaintingStyle.fill
            ..color = Colors.black);
      canvas.translate(-i*1100, -0);
    }    
    
    canvas.translate(2960, 0);
    canvas.translate(-2960, -0);
    canvas.translate(4099, 0);
    canvas.translate(-4099, -0);
    canvas.translate(5123, 0);
    canvas.translate(-5123, -0);
    canvas.scale(1, 1);
    canvas.translate(0, 0);
    canvas.scale(170.66666666666666, -170.66666666666666);
    canvas.translate(0, -8.736328125);
    canvas.translate(0, -8.736328125);
    canvas.translate(0, 0);
    canvas.restore();
  }

  @override
  bool shouldRepaint(covariant CustomPainter oldDelegate) {
    return false;
  }
}