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ExtJS中layout的用法总结


好久没看过EXT了,最近项目中需要用到就重新复习了下,对于一些知识也都模糊不清,现对Extjs中的layout布局进行总结下:
layout中有absolute,anchor,border,accordion,card,form,table,column,fit这几种,现一一举例:
1.absolute根据字面意思就知道,是根据具体坐标进行定位的,固不写相应的代码了,其他的如下
2.anchor:其值可以使百分比和数值,数值一般为负数,其代表的意思是如果宽度和长度中有一个设定值了,则anchor代表的是未设置的那个,如果两者都没有设定具体值,则如果需要使用anchor则需要anchro:'ww,hh'

Ext.onReady(function() {  
       Ext.create('Ext.Window',{
		title:'Anchor layout',
		width:400,
		height:400,
		layout:'anchor',
		plain: true,
		items:[
			Ext.create('Ext.panel.Panel',{
				title:'panel1',
				height:100,
				anchor:'-50',
				html:'高度等于100,宽度= 容器宽度-50'
			}),
			Ext.create('Ext.panel.Panel',{
				title:'panel2',
				height:100,
				anchor:'50%',
				html:'高度等于100,宽度=容器的宽度*50%'
			}),
			Ext.create('Ext.panel.Panel',{
				title:'panel3',
				anchor:'-10,-200',
				html:'高度等于容器高度-10,宽度等于容器宽度-200'
			})
		]
		
	}).show(); 
    }); 

3.border:将容器分为五个区域:east,south,west,north,center

Ext.onReady(function(){
         var tab = Ext.create('Ext.tab.Panel',{
		region:'center',//border布局,将页面分成东,南,西,北,中五部分,这里表示TabPanel放在中间  
		margins:'3,3,3,0',
		activeTab:0,
		defaults:{
			autoScroll:true
		},
		items:[{
			title:'tab1',
			html:'第一个tab内容'
		},{
			title:'tab2',
			html:'第二个tab内容'
		},{
			title:'tab3',
			html:'第三个tab内容'
		}]
		
	})
	var nav = Ext.create('Ext.panel.Panel',{
		title:'navigation',
		region:'west',
		split:true,
		width:200,
		collapsible:true,//允许伸缩
		margins:'3,0,3,3',
		cmargins:'3,3,3,'
	});
	Ext.create('Ext.Window',{
		title:'Layout Window',
		width:600,
		height:350,
		closable:true,
		border:false,
		plain:true,
		layout:'border',
		closeAction:'hide',
		items:[nav,tab]
	}).show();
)};

4.accordion:这个风格是手风琴式的,效果是如果 有多个item,则点击其中一个,则展开,其他的则收缩。

Ext.OnReady(function(){  
     Ext.create('Ext.panel.Panel',{
		title:'容器组件',
		layout:'accordion',
		width:600,
		height:200,
		layoutConfig:{animate:false},
		items:[{
		   title:'元素1',html:''
		},{
		   title:'元素2',html:''
		},{
		   title:'元素3',html:''
		},{
		   title:'元素4',html:''
		}]
		
	}); 
}); 

5.card:像安装向导一样,一张一张显示


Ext.onReady(function(){
	var navigate = function(panel,direction){
		var layout = panel.getLayout();
		layout[direction]();
		Ext.getCmp('move-prev').setDisabled(!layout.getPrev());
		Ext.getCmp('move-next').setDisabled(!layout.getNext());
	};
	Ext.create('Ext.panel.Panel',{
				title:'Example Wizard',
				height:500,
				width:400,
				layout: 'card',
				activeItem:0,
				bodyStyle:'padding:15px',
				animCollapse:true,
				renderTo:Ext.getBody(),
				defaults:{
       				 // applied to each contained panel
        			border: false
   				},
				bbar:[{
					id:'move-prev',
					text:'back',
					handler:function(btn){
						navigate(btn.up("panel"),"prev");
					},
					disabled:true
				},'->',{
					id:'move-next',
					text:"next",
					handler:function(btn){
						navigate(btn.up("panel"),"next");
					}
				}],
				items:[{
					id:'card-0',
					html:'<h1>Welcome to the Wizard!</h1>'
				},{
					id:'card-1',
					html:'<p>step 2 of 3 </p>'
				},{
					id:'card-2',
					html:'<h1>Congratulations!</h1><p>Step 3 of  3-complete</p>'
				}]
			});
});

6.form:是一种专门用于管理表单中输入字段的布局

Ext.onReady(function() {  
        var win = Ext.create('Ext.Window',{  
            title: "form Layout",  
            height: 150,  
            width: 230,  
            plain: true,  
            bodyStyle: 'padding:15px',  
            items:   
            {  
                xtype: "form",  
                labelWidth: 30,  
                defaultType: "textfield",  
                frame:true,  
                items:   
                [  
                    {  
                        fieldLabel:"姓名",  
                        name:"username",  
                        allowBlank:false  
                    },  
                    {  
                        fieldLabel:"呢称",  
                        name:"nickname"  
                    },  
                    {  
                        fieldLabel: "生日",  
                        xtype:'datefield',  
                        name: "birthday",  
                        width:127  
                    }  
                ]  
            }  
        });  
        win.show();  
    });  

7.table:按照普通表格的方法布局子元素,用layoutConfig:{columns:3},//将父容器分成3列

Ext.onReady(function(){  
      Ext.create('Ext.panel.Panel',  
      {  
       renderTo:Ext.getBody(),  
       title:'容器组件',  
       layout:'table',         
       width:500,  
       height:200,  
       layoutConfig:{columns:3},//将父容器分成3列  
       items:[  
        {title:'元素1',html:'ssssssssss',rowspan:2,height:100},  
        {title:'元素2',html:'dfffsddsdfsdf',colspan:2},  
        {title:'元素3',html:'sdfsdfsdf'},  
        {title:'元素4',html:''}  
       ]  
      }  
     );  
}); 

8.column:把整个容器看成一列,然后向容器放入子元素时

Ext.onReady(function() {  
        var win = Ext.create('Ext.Window',{  
            title: "Column Layout",  
            height: 300,  
            width: 400,  
            plain: true,  
            layout: 'column',  
            items: [{  
                title:"width=50%",  
                columnWidth:0.5,  
                html:"width=(容器宽度-容器内其它组件固定宽度)*50%",  
                height:200  
            },  
            {  
                title:"width=250px",  
                width: 200,  
                height:100,  
                html:"固定宽度为250px"  
            }              
            ]  
        });  
        win.show();  
    });  

9.fit:填充整个容器(如果多个子元素则只有一个元素充满整个容器)

Ext.OnReady(function(){  
   Ext.create(Ext.create(Ext.panel.Panel',  
      {  
       renderTo:'paneldiv',  
       title:'容器组件',  
       layout:'fit',  
       width:500,  
       height:100,  
       items:[  
        {title:'子元素1'},  
        {title:'子元素2'},  
        {title:'子元素3'},  
        {title:'子元素4'},  
        {title:'子元素5'}  
       ]  
      }  
     );  
}); 

作者:zhouyihui2010
原文:http://zhouyihui2010.iteye.com/blog/1235404