forked from lxm_flutter/FlutterUnit
64 lines
1.5 KiB
Dart
64 lines
1.5 KiB
Dart
import 'package:flutter/material.dart';
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/// create by 张风捷特烈 on 2020/4/30
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/// contact me by email 1981462002@qq.com
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/// 说明:
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// {
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// "widgetId": 77,
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// "name": 'AspectRatio基本使用',
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// "priority": 1,
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// "subtitle":
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// "【child】 : 孩子组件 【Widget】\n"
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// "【aspectRatio】 : 宽高比例 【double】",
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// }
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class CustomAspectRatio extends StatefulWidget {
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@override
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_CustomAspectRatioState createState() => _CustomAspectRatioState();
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}
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class _CustomAspectRatioState extends State<CustomAspectRatio> {
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var _ratio = 0.75;
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@override
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Widget build(BuildContext context) {
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var child = Container(
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alignment: Alignment.center,
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color: Colors.cyanAccent,
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width: 50,
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height: 50,
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child: Text("Static"),
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);
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var box = AspectRatio(
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aspectRatio: _ratio,
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child: Container(
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color: Colors.orange,
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child: Icon(
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Icons.android,
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color: Colors.white,
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)),
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);
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return Column(
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children: <Widget>[
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_buildSlider(),
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Container(
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color: Colors.grey.withAlpha(22),
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width: 300,
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height: 100,
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child: Row(
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children: <Widget>[child, box, child],
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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 _buildSlider() => Slider(
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divisions: 20,
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min: 0.1,
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max: 2.0,
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label: _ratio.toStringAsFixed(2),
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value: _ratio,
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onChanged: (v) => setState(() => _ratio = v));
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}
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