Dot Tab Indicator In Flutter :

/* indicator: DotTabIndicator( indicatorColor: Colors.black54, radius: 2, ), indicatorWeight: 1 * kDefaultDotIndicatorRadius, */ import 'package:flutter/material.dart'; import 'package:flutter/widgets.dart'; const kDefaultDotIndicatorRadius = 3.0; class DotTabIndicator extends Decoration { const DotTabIndicator({this.indicatorColor, this.radius = kDefaultDotIndicatorRadius}); final Color indicatorColor; final double radius; @override BoxPainter createBoxPainter([onChanged]) { return _DotPainter(this, onChanged); } } class _DotPainter extends BoxPainter { _DotPainter(this.decoration, VoidCallback onChanged) : super(onChanged); final DotTabIndicator decoration; @override void paint(Canvas canvas, Offset offset, ImageConfiguration configuration) { final center = configuration.size.center(offset); final dy = configuration.size.height; final newOffset = Offset(center.dx, dy - 8); final paint = Paint(); paint.color = decoration.indicatorColor; paint.style = PaintingStyle.fill; canvas.drawCircle(newOffset, decoration.radius, paint); } }
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