36 lines
929 B
Dart
36 lines
929 B
Dart
import 'package:flutter/material.dart';
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class CrossPaint extends StatelessWidget {
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@override
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Widget build(BuildContext context) {
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return Container(
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color: Colors.transparent,
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alignment: Alignment.center,
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child: CustomPaint(
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// 使用CustomPaint 背景画板
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painter: MyPainter(),
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),
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);
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}
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}
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class MyPainter extends CustomPainter {
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@override
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void paint(Canvas canvas, Size size) {
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// 创建画笔
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final Paint paintLine = Paint()
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..color = Colors.grey
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..strokeWidth = 2;
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// 绘制线
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canvas.drawLine(Offset(-400, 0), Offset(400, 0), paintLine);
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canvas.drawLine(Offset(0, 500), Offset(0, -440), paintLine);
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// 创建画笔
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// final Paint paintPoint = Paint()..color = Colors.red;
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// 绘制圆点
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// canvas.drawCircle(Offset(0, 0), 10, paintPoint);
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}
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@override
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bool shouldRepaint(CustomPainter oldDelegate) => false;
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}
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