forked from lxm_flutter/FlutterUnit
69 lines
1.8 KiB
Dart
69 lines
1.8 KiB
Dart
import 'package:flutter/cupertino.dart';
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import 'package:flutter/material.dart';
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/// create by 张风捷特烈 on 2020/7/22
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/// contact me by email 1981462002@qq.com
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/// 说明: 263 FractionalTranslation 通过offset属性将子组件进行偏移,偏移量为OffSet横纵*子组件大小。
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// {
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// "widgetId": 263,
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// "name": "FractionalTranslation基本使用",
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// "priority": 1,
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// "subtitle": "【translation】 : 偏移分度值 【Offset】\n"
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// "【child】: 子组件 【Widget】",
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// }
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class FractionalTranslationDemo extends StatefulWidget {
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@override
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_FractionalTranslationDemoState createState() =>
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_FractionalTranslationDemoState();
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}
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class _FractionalTranslationDemoState extends State<FractionalTranslationDemo> {
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var dx = 0.0;
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var dy = 0.0;
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@override
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Widget build(BuildContext context) {
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print(dx);
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return Column(
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mainAxisSize: MainAxisSize.min,
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children: <Widget>[
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Container(
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width: 200,
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height: 100,
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alignment: Alignment.topLeft,
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color: Colors.grey.withAlpha(33),
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child: FractionalTranslation(
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translation: Offset(dx, dy),
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child: Icon(
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Icons.android,
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color: Colors.green,
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),
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),
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),
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_buildSliderX(),
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_buildSliderY()
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],
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);
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}
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Widget _buildSliderX() => Slider(
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min: -2.0,
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max: 10.0,
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value: dx,
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divisions: 100,
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label: 'dx:${dx.toStringAsFixed(1)}',
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onChanged: (v) => setState(() => dx = v),
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);
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Widget _buildSliderY() => Slider(
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min: -2.0,
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max: 6.0,
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value: dy,
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divisions: 100,
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label: 'dy:${dy.toStringAsFixed(1)}',
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onChanged: (v) => setState(() => dy = v),
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);
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}
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