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October 7, 2023 02:01
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volcanic-rhythm-8892
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// Copyright (c) 2019, the Dart project authors. Please see the AUTHORS file | |
// for details. All rights reserved. Use of this source code is governed by a | |
// BSD-style license that can be found in the LICENSE file. | |
import 'package:flutter/material.dart'; | |
void main() => runApp(MyApp()); | |
class MaskPainter extends CustomPainter { | |
@override | |
void paint(Canvas canvas, Size size) { | |
var paint = Paint() | |
..color = Colors.black | |
..style = PaintingStyle.fill; | |
var path = Path(); | |
path.moveTo(size.width / 2, 0); | |
path.lineTo(size.width, size.height / 2); | |
path.lineTo(0, size.height); | |
path.close(); | |
canvas.drawPath(path, paint); | |
} | |
@override | |
bool shouldRepaint(CustomPainter oldDelegate) => true; | |
} | |
class RibbonStart extends CustomClipper<Path> { | |
@override | |
Path getClip(Size size) { | |
Path path = Path(); | |
path.lineTo(size.width * 0.84, 0); | |
path.cubicTo(size.width * 0.84, 0, 0, 0, 0, 0); | |
path.cubicTo(0, 0, 0, size.height, 0, size.height); | |
path.cubicTo(0, size.height, size.width * 0.84, size.height, | |
size.width * 0.84, size.height); | |
path.cubicTo(size.width * 0.84, size.height, size.width, size.height / 2, | |
size.width, size.height / 2); | |
path.cubicTo(size.width, size.height / 2, size.width * 0.84, 0, | |
size.width * 0.84, 0); | |
path.cubicTo( | |
size.width * 0.84, 0, size.width * 0.84, 0, size.width * 0.84, 0); | |
return path; | |
} | |
@override | |
bool shouldReclip(oldClipper) => false; | |
} | |
class RibbonMiddle extends CustomClipper<Path> { | |
@override | |
Path getClip(Size size) { | |
Path path = Path(); | |
path.lineTo(size.width * 0.84, 0); | |
path.cubicTo(size.width * 0.84, 0, 0, 0, 0, 0); | |
path.cubicTo(0, 0, size.width * 0.16, size.height / 2, size.width * 0.16, | |
size.height / 2); | |
path.cubicTo( | |
size.width * 0.16, size.height / 2, 0, size.height, 0, size.height); | |
path.cubicTo(0, size.height, size.width * 0.84, size.height, | |
size.width * 0.84, size.height); | |
path.cubicTo(size.width * 0.84, size.height, size.width, size.height / 2, | |
size.width, size.height / 2); | |
path.cubicTo(size.width, size.height / 2, size.width * 0.84, 0, | |
size.width * 0.84, 0); | |
path.cubicTo( | |
size.width * 0.84, 0, size.width * 0.84, 0, size.width * 0.84, 0); | |
return path; | |
} | |
@override | |
bool shouldReclip(oldClipper) => false; | |
} | |
class RibbonEnd extends CustomClipper<Path> { | |
@override | |
Path getClip(Size size) { | |
Path path = Path(); | |
path.lineTo(size.width, 0); | |
path.cubicTo(size.width, 0, 0, 0, 0, 0); | |
path.cubicTo(0, 0, size.width * 0.16, size.height / 2, size.width * 0.16, | |
size.height / 2); | |
path.cubicTo( | |
size.width * 0.16, size.height / 2, 0, size.height, 0, size.height); | |
path.cubicTo( | |
0, size.height, size.width, size.height, size.width, size.height); | |
path.cubicTo(size.width, size.height, size.width, size.height / 2, | |
size.width, size.height / 2); | |
path.cubicTo(size.width, size.height / 2, size.width, 0, size.width, 0); | |
path.cubicTo(size.width, 0, size.width, 0, size.width, 0); | |
return path; | |
} | |
@override | |
bool shouldReclip(oldClipper) => false; | |
} | |
class MyApp extends StatelessWidget { | |
@override | |
Widget build(BuildContext context) { | |
BoxDecoration borderTop = BoxDecoration( | |
color: Color(0xFFE1E6EA), | |
border: Border( | |
top: BorderSide(color: Color(0xFF009DFF), width: 2), | |
), | |
); | |
Widget activeRibbon = Container( | |
width: 126, | |
height: 36, | |
decoration: borderTop, | |
); | |
double getLeft(int index) { | |
return (126 * index) - ((20 - 4) * index) as double; | |
} | |
return MaterialApp( | |
home: Scaffold( | |
body: Center( | |
child: Column( | |
crossAxisAlignment: CrossAxisAlignment.stretch, | |
children: [ | |
SizedBox( | |
width: 126 * 3, | |
height: 36, | |
child: Stack( | |
alignment: AlignmentDirectional.topStart, | |
children: [ | |
Positioned( | |
top: 0, | |
left: 0, | |
child: ClipPath( | |
clipper: RibbonStart(), | |
child: activeRibbon, | |
), | |
), | |
Positioned( | |
top: 0, | |
left: getLeft(1), | |
child: ClipPath( | |
clipper: RibbonMiddle(), | |
child: activeRibbon, | |
), | |
), | |
Positioned( | |
top: 0, | |
left: getLeft(2), | |
child: ClipPath( | |
clipper: RibbonEnd(), | |
child: activeRibbon, | |
), | |
) | |
], | |
), | |
), | |
], | |
), | |
), | |
), | |
); | |
} | |
} |
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