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189
lib/widgets/elements/Form/Button/RawMaterialButton/index.dart
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189
lib/widgets/elements/Form/Button/RawMaterialButton/index.dart
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/**
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* Created with 菜鸟手册.
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* User: 一晟
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* Date: 2018/11/14
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* Time: 下午4:31
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* email: zhu.yan@alibaba-inc.com
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* target: RawMaterialButton 的示例
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* 对应文档地址:https://docs.flutter.io/flutter/material/RawMaterialButton-class.html
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*/
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import '../../../../../common/widget-demo.dart';
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import '../../../../../routers/application.dart';
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import 'dart:math';
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import 'package:flutter/material.dart';
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import 'package:flutter_markdown/flutter_markdown.dart';
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import './demo.dart' as rawMaterialButton;
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const String _rawMaterialText0 =
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"""### **简介**
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> RawMaterial button “RawMaterial 按钮”
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- 基于Semantics，Material和InkWell 小部件创建按钮。
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- 此类不使用当前Theme或ButtonTheme来计算未指定参数的默认值。它旨在用于自定义材质按钮，可选择包含主题或特定于应用程序源的默认值。
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""";
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const String _rawMaterialText1 =
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"""### **基本用法**
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> 参数的默认的按钮和禁用按钮
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""";
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const String _rawMaterialText2 =
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"""### **进阶用法**
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> 更改项参数的自定义
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""";
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class Demo extends StatefulWidget {
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static const String routeName = '/element/Form/Button/RawMaterialButton';
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@override
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_DemoState createState() => _DemoState();
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}
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class _DemoState extends State<Demo> {
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String buttonShapeType = 'border'; // 边框类型
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void setButtonShapeType(){
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//String _buttonShapeType = (buttonShapeType == 'border') ? 'radius' : 'border';
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this.setState((){
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//buttonShapeType = _buttonShapeType;
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});
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}
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@override
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Widget build(BuildContext context) {
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return WidgetDemo(
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title: 'RawMaterialButton',
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codeUrl: '${Application.github['widgetsURL']}elements/Form/Button/RawMaterialButton/demo.dart',
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child: allRawMaterialButtons(context,this),
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docUrl: 'https://docs.flutter.io/flutter/material/RawMaterialButton-class.html',
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);
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}
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}
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/**
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* 所有的 RawMaterialButton 按钮
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*/
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Widget allRawMaterialButtons(BuildContext context,_DemoState that){
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final ShapeBorder buttonShape = drawShape(that.buttonShapeType);
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return Container(
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//padding: new EdgeInsets.only(bottom: 20.0, top: 20.0, left: 0, right: 0),
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child: Column(
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//mainAxisSize: MainAxisSize.max,
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children: <Widget>[
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MarkdownBody(data: _rawMaterialText0),
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textAlignBar(_rawMaterialText1),
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ButtonBar(
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alignment: MainAxisAlignment.spaceAround,
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mainAxisSize: MainAxisSize.max,
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children: <Widget>[
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rawMaterialButton.RawMaterialButtonDefault(),
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SizedBox(width: 20.0), // 间距
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rawMaterialButton.RawMaterialButtonDefault(false),
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],
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),
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textAlignBar(_rawMaterialText2),
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SizedBox(height: 10.0),
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rawMaterialButton.RawMaterialButtonCustom('主要按钮',Colors.blue,buttonShape),
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SizedBox(height: 10.0),
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rawMaterialButton.RawMaterialButtonCustom('成功按钮',Colors.green,buttonShape),
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SizedBox(height: 10.0),
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rawMaterialButton.RawMaterialButtonCustom('信息按钮',Colors.grey,buttonShape),
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SizedBox(height: 10.0),
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rawMaterialButton.RawMaterialButtonCustom('警告按钮',Colors.orange,buttonShape),
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SizedBox(height: 10.0),
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rawMaterialButton.RawMaterialButtonCustom('危险按钮',Colors.pink,buttonShape),
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SizedBox(height: 10.0),
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rawMaterialButton.RawMaterialButtonCustom( '点击切换，观察字体变化', Colors.blue, buttonShape,
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() => that.setButtonShapeType()),
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SizedBox(height: 20.0)
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])
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);
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}
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/*
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* alert 弹框
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* context:容器的父级
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* */
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void _showMessage(String name, BuildContext context) {
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showDialog(
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// alert 的父级
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context: context,
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builder: (BuildContext context) {
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return AlertDialog(
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title: new Text('提示'),
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content: new Text(name),
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actions: <Widget>[
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new FlatButton(
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// alert 的取消按钮
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onPressed: () {
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// 取消的事件
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Navigator.of(context).pop(true);
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},
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child: new Text('取消'))
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]);
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}
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);
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}
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/*
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* 带align的text
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* */
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Widget textAlignBar(String txt){
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//style: new TextStyle(fontSize: 15.5, height: 1.2),textAlign:TextAlign.left
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return new Align(
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alignment: FractionalOffset.centerLeft,
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child: Column(
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children: <Widget>[
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SizedBox(height: 20.0),
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MarkdownBody(data: txt)
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//new Text(txt, style: new TextStyle(fontSize: 15.5,height: 1.2,color:Colors.blue),textAlign:TextAlign.left)
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])
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);
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}
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/*
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* 绘制边框信息,比如是否有边框,是否是圆角
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* */
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ShapeBorder drawShape(String type){
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final Color _color = _randomColor();
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final borderWidth = Random.secure().nextInt(5).toDouble();
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final radiusWidth = Random.secure().nextInt(50).toDouble();
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switch(type){
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case 'border':
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return Border.all(
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// 设置边框样式
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width: borderWidth,
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color: _color,
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style: BorderStyle.solid,
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);
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break;
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case 'radius':
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return RoundedRectangleBorder(
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side:new BorderSide( // 保留原来的边框样式
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width: borderWidth,
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color: _color,
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style: BorderStyle.solid,
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),
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borderRadius: BorderRadius.only(
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topRight: Radius.circular(radiusWidth),
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topLeft: Radius.circular(radiusWidth),
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bottomLeft: Radius.circular(radiusWidth),
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bottomRight: Radius.circular(radiusWidth),
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),
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);
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break;
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default:
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return null;
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}
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}
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/*
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* 取随机颜色
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* */
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Color _randomColor() {
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var red = Random.secure().nextInt(255);
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var greed = Random.secure().nextInt(255);
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var blue = Random.secure().nextInt(255);
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return Color.fromARGB(255, red, greed, blue);
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}
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