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37 lines
1.0 KiB
37 lines
1.0 KiB
4 years ago
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import 'package:flutter/material.dart';
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import 'package:flutter_screenutil/flutter_screenutil.dart';
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class ASNUmericPainter extends CustomPainter {
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final bool plus;
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ASNUmericPainter.minus() : this.plus = false;
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ASNUmericPainter.plus() : this.plus = true;
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@override
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void paint(Canvas canvas, Size size) {
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double halfWidth = size.width / 2;
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double halfHeight = size.height / 2;
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Paint paint = Paint()
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..color = Colors.black
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..style = PaintingStyle.stroke
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..strokeWidth = 1.w;
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canvas.drawCircle(Offset(halfWidth, halfHeight), 16.w / 2, paint);
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canvas.drawLine(
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Offset(halfWidth - 3, halfHeight),
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Offset(halfWidth + 3, halfHeight),
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paint,
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);
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if (plus) {
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canvas.drawLine(
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Offset(halfWidth, halfHeight - 3),
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Offset(halfWidth, halfHeight + 3),
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paint,
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);
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}
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}
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@override
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bool shouldRepaint(ASNUmericPainter oldDelegate) => false;
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@override
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bool shouldRebuildSemantics(ASNUmericPainter oldDelegate) => false;
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}
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