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46 lines
1.2 KiB
46 lines
1.2 KiB
3 years ago
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import 'package:flutter/cupertino.dart';
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import 'package:flutter/material.dart';
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/// 竖线
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class VerticalLinePainter extends CustomPainter {
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///线条颜色
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final Color color;
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///线条宽度
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final double width;
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///线条左边内边距
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final double paddingLeft;
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///线条顶部内边距
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final double paddingTop;
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///线条底部内边距
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final double paddingBottom;
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VerticalLinePainter({
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this.color: Colors.grey,
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this.width: 1,
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this.paddingLeft: 0,
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this.paddingTop: 0,
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this.paddingBottom: 0,
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});
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@override
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void paint(Canvas canvas, Size size) {
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Paint paint = Paint();
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paint.style = PaintingStyle.fill;
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paint.color = color;
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Path path = new Path(); //使用轨迹画线条
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path.moveTo(paddingLeft, paddingTop);//左上点
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path.lineTo(paddingLeft, size.height + paddingTop - paddingBottom);//左下点
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path.lineTo(width + paddingLeft, size.height + paddingTop - paddingBottom);//右下点
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path.lineTo(width + paddingLeft, paddingTop);//右上点
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path.close();
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canvas.drawPath(path, paint);
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}
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///有变化刷新
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@override
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bool shouldRepaint(covariant CustomPainter oldDelegate) => true;
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}
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