feat(delete):删除里面文件夹

lib/lineline/dash_line.dart

@@ -0,0 +1,86 @@
+import 'package:flutter/material.dart';
+
+///@Desc 虚线
+class DashLine extends StatelessWidget {
+  final Color? color; // 虚线颜色
+  final Axis direction; // 虚线方向
+  final double? dottedLength; //虚线长度
+
+  const DashLine({
+    Key? key,
+    this.color,
+    this.direction = Axis.horizontal,
+    this.dottedLength,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return CustomPaint(
+      painter: DashedLinePainter(
+        color: color ?? const Color(0xff36C2FD),
+        direction: direction,
+        dottedLength: dottedLength,
+      ),
+    );
+  }
+}
+
+class DashedLinePainter extends CustomPainter {
+  final Color color;
+  final double width;
+  final Axis direction; //方向
+  final double? dottedLength; //虚线长度
+
+  DashedLinePainter({
+    this.width = 1,
+    this.color = Colors.black,
+    this.direction = Axis.horizontal,
+    this.dottedLength,
+});
+
+  @override
+  void paint(Canvas canvas, Size size) {
+    final Paint paint = Paint()
+      ..color = color
+      ..strokeWidth = width
+      ..style = PaintingStyle.stroke
+      ..strokeCap = StrokeCap.round
+      ..isAntiAlias = true;
+    Path dottedPath = _createDashedPath(
+      Path()
+        ..moveTo(0, 0)
+        ..lineTo(
+          direction == Axis.horizontal ? size.width : 0,
+          direction == Axis.horizontal ? 0 : size.height,
+        ),
+      length: dottedLength,
+    );
+    canvas.drawPath(dottedPath, paint);
+  }
+
+  Path _createDashedPath(Path path,{double? length}) {
+    Path targetPath = Path();
+    double dottedLength = length ?? 10;
+    double dottedGap = length ?? 10;
+    for (var metric in path.computeMetrics()) {
+      double distance = 0;
+      bool isDrawDotted = true;
+      while (distance < metric.length) {
+        if (isDrawDotted) {
+          targetPath.addPath(
+            metric.extractPath(distance, distance + dottedLength),
+            Offset.zero,
+          );
+          distance += dottedLength;
+        } else {
+          distance += dottedGap;
+        }
+        isDrawDotted = !isDrawDotted;
+      }
+    }
+    return targetPath;
+  }
+
+  @override
+  bool shouldRepaint(DashedLinePainter oldDelegate) => false;
+}