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49 lines
1.2 KiB
Dart
49 lines
1.2 KiB
Dart
import 'package:flutter/material.dart';
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class PageViewIndicator extends StatelessWidget {
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final bool isActive;
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final int length;
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final double currentPage;
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PageViewIndicator({
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@required this.isActive,
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@required this.length,
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@required this.currentPage,
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});
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@override
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Widget build(BuildContext context) {
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return _indicator(this.isActive);
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}
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Widget _indicator(bool isActive) {
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return Positioned(
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top: 20,
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left: 0,
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right: 0,
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child: Container(
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margin: EdgeInsets.only(top: 0),
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child: Row(
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mainAxisSize: MainAxisSize.min,
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mainAxisAlignment: MainAxisAlignment.center,
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children: <Widget>[
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for (int i = 0; i < length; i++)
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if (i == currentPage) ...[circleBar(true)] else circleBar(false),
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],
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),
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),
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);
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}
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Widget circleBar(bool isActive) {
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return AnimatedContainer(
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duration: Duration(milliseconds: 150),
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margin: EdgeInsets.symmetric(horizontal: 3),
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height: isActive ? 12 : 8,
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width: isActive ? 12 : 8,
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decoration: BoxDecoration(
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color: isActive ? Colors.red : Colors.grey,
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borderRadius: BorderRadius.all(Radius.circular(12))),
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);
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}
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}
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