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35 lines
993 B
35 lines
993 B
4 years ago
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import 'dart:math' as math;
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import 'package:flutter/material.dart';
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import 'package:flutter/cupertino.dart';
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class MyPainter extends CustomPainter {
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@override
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paint(Canvas canvas, Size size) {
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Color shadowColor = Colors.pink;
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var shadowWidth = 20.0;
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final Offset offsetCenter = Offset(10.0, 10.0);
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var outerRadius = 100.0; //外圈大小
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var strokeWidth = 20.0; //圈宽度
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final ringPaint = Paint()
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..style = PaintingStyle.stroke
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..color = shadowColor
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..strokeWidth = (strokeWidth);
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final ringPaint1 = Paint()
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..style = PaintingStyle.stroke
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..color = Colors.green
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..strokeWidth = (strokeWidth);
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canvas.drawArc(Rect.fromCircle(center: offsetCenter, radius: 30), 10, math.pi/2,
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false, ringPaint);
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canvas.drawArc(Rect.fromCircle(center: offsetCenter, radius: 30), 10+math.pi/2, math.pi/2,
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false, ringPaint1);
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}
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@override
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bool shouldRepaint(CustomPainter oldDelegate) {
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return true;
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}
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}
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