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168
lib/widgets/elements/Form/Button/IconButton/index.dart
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168
lib/widgets/elements/Form/Button/IconButton/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: IconButton 的示例
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* 对应文档地址:https://docs.flutter.io/flutter/material/IconButton-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 iconButton;
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const String _iconText0 =
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"""### **简介**
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> Icon button “图标按钮”
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- IconButton widget上的图片，通过填充颜色（墨水）来对触摸作出反应。
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""";
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const String _iconText1 =
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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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- 图标按钮通常在AppBar.actions字段中使用，但它们也可以在许多其他地方使用。。
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- 如果您尝试更改按钮的颜色并且没有任何效果，请检查您是否正在传递非null onPressed处理程序。""";
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const String _iconText2 =
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"""### **进阶用法**
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> 更改项参数的自定义,比如:边框，点击效果，内容文字,颜色,圆角等
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- 如果可能，图标按钮的命中区域的大小至少为48.0像素，与实际的iconSize无关，以满足 Material Design规范中的触摸目标大小要求。的对准控制图标本身如何定位命中区域内。
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- ** 长按可弹出 tip 文字 **
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""";
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class Demo extends StatefulWidget {
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static const String routeName = '/element/Form/Button/IconButton';
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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: 'IconButton',
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codeUrl: '${Application.github['widgetsURL']}elements/Form/Button/IconButton/demo.dart',
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child: allIconButtons(context,this),
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docUrl: 'https://docs.flutter.io/flutter/material/IconButton-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 IconButton 按钮
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*/
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Widget allIconButtons(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: _iconText0),
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textAlignBar(_iconText1),
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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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iconButton.IconButtonDefault(),
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SizedBox(width: 20.0), // 间距
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iconButton.IconButtonDefault(false),
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],
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),
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textAlignBar(_iconText2),
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SizedBox(height: 10.0),
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iconButton.IconButtonCustom('主要按钮',Colors.blue,buttonShape),
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SizedBox(height: 10.0),
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iconButton.IconButtonCustom('成功按钮',Colors.green,buttonShape),
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SizedBox(height: 10.0),
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iconButton.IconButtonCustom('信息按钮',Colors.grey,buttonShape),
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SizedBox(height: 10.0),
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iconButton.IconButtonCustom('警告按钮',Colors.orange,buttonShape),
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SizedBox(height: 10.0),
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iconButton.IconButtonCustom('危险按钮',Colors.pink,buttonShape),
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SizedBox(height: 10.0),
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RaisedButton(
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// 文本内容
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child: const Text('点击切换，图标按钮', semanticsLabel: 'FLAT BUTTON 1'),
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onPressed: ()=> 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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* 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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