ExtJS4学习笔记(三)---VBox布局的使用

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要使用VBox布局方式,首先的熟悉下一下几个主要属性:

一、align:字符类型,指示组件在容器内的对齐方式。有如下几种属性。

    1、left(默认):排列于容器左侧。

    2、center :控件在容器水平居中。

    3、stretch:控件横向拉伸至容器大小

    4、stretchmax:控件横向拉伸,宽度为最宽控件的宽。

二、flex:数字类型,指示组件在容器中水平呈现方式,通俗的讲,就是指示组件在容器中的相对宽度。

三、pack : 字符类型,指示组件在容器的位置,有如下几种属性。

    1、start(默认):组件在容器上边

    2、center:组件在容器中间

    3、end:组件在容器的下边

 

HTML代码:

 

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <title>VBox---MHZG.NET</title> <link rel="stylesheet" type="text/css" href="../../resources/css/ext-all.css" /> <script type="text/javascript" src="../../bootstrap.js"></script> <script type="text/javascript" src="../../locale/ext-lang-zh_CN.js"></script> <script type="text/javascript" src="vbox.js"></script> <style type="text/css">         html, body {             font: normal 12px verdana;             margin: 0;             padding: 0;             border: 0 none;         }     </style> </head> <body> </body> </html> vbox.js:Ext.onReady(function() {  var currentName;  var replace = function(config, name) {   var btns = Ext.getCmp('btns');   if (name && name != currentName) {    currentName = name;    btns.remove(0);    btns.add(Ext.apply(config));   }  };     var viewport = Ext.create('Ext.Viewport', {   layout:'border',   items: [{    id:'btns',    region:'west',    baseCls:'x-plain',    split:true,    width:150,    minWidth: 100,    maxWidth: 250,    layout:'fit',    margins: '5 0 5 5',    items: {     baseCls: 'x-plain',     html: '<p style="padding:10px;color:#556677;font-size:11px;">点击右边的按钮查看效果</p>'    }     }, {    region:'center',    margins: '5 5 5 0',    layout: 'anchor',    items:[{     anchor: '100%',     baseCls:'x-plain',     layout: {      type:'hbox',      padding: 10     },     defaults:{      margins:'0 5 0 0',      pressed: false,      toggleGroup:'btns',      allowDepress: false     },     items: [{      xtype:'button',            text: 'Spaced / Align: left',      handler: function(){       replace({        layout: {         type:'vbox',         padding:'5',         align:'left'        },        defaults:{margins:'0 0 5 0'},        items:[{         xtype:'button',         text: 'Button 1'        },{         xtype:'tbspacer',         flex:1        },{         xtype:'button',         text: 'Button 2'        },{         xtype:'button',         text: 'Button 3'        },{         xtype:'button',         text: 'Button 4',         margins:'0'        }]       }, 'spaced');      }     },{      xtype:'button',      text: 'Multi-Spaced / Align: left',      handler: function(){       replace({        layout: {         type:'vbox',         padding:'5',         align:'left'        },        defaults:{margins:'0 0 5 0'},        items:[{         xtype:'button',         text: 'Button 1'        },{         xtype:'tbspacer',         flex:1        },{         xtype:'button',         text: 'Button 2'        },{         xtype:'tbspacer',         flex:1        },{         xtype:'button',         text: 'Button 3'        },{         xtype:'tbspacer',         flex:1        },{         xtype:'button',         text: 'Button 4',         margins:'0'        }]       }, 'multi spaced - align left');      }     },{      xtype:'button',      text: 'Align: left',      handler: function(){       replace({        layout: {         type:'vbox',         padding:'5',         align:'left'        },        defaults:{margins:'0 0 5 0'},        items:[{         xtype:'button',         text: 'Button 1'        },{         xtype:'button',         text: 'Button 2'        },{         xtype:'button',         text: 'Button 3'        },{         xtype:'button',         text: 'Button 4'        }]       }, 'align left');      }     },{      xtype:'button',      text: 'Align: center',      handler: function(){       replace({        layout: {         type:'vbox',         padding:'5',         align:'center'        },        defaults:{margins:'0 0 5 0'},        items:[{         xtype:'button',         text: 'Button 1'        },{         xtype:'button',         text: 'Button 2'        },{         xtype:'button',         text: 'Button 3'        },{         xtype:'button',         text: 'Button 4'        }]       }, 'align center');      }     },{      xtype:'button',      text: 'Align: stretch',      handler: function(){       replace({        layout: {         type:'vbox',         padding:'5',         align:'stretch'        },        defaults:{margins:'0 0 5 0'},        items:[{         xtype:'button',         text: 'Button 1'        },{         xtype:'button',         text: 'Button 2'        },{         xtype:'button',         text: 'Button 3'        },{         xtype:'button',         text: 'Button 4'        }]       }, 'align stretch');      }     },{      xtype:'button',      text: 'Align: stretchmax',      handler: function(){       replace({        layout: {         type:'vbox',         padding:'5',         align:'stretchmax'        },        defaults:{margins:'0 0 5 0'},        items:[{         xtype:'button',         text: 'Jamie'        },{         xtype:'button',         text: 'Aaron'        },{         xtype:'button',         text: 'Tommy'        },{         xtype:'button',         text: 'Ed '        }]       }, 'align stretchmax');      }     }]    },{     anchor: '100%',     baseCls:'x-plain',     layout: {      type:'hbox',      padding: '0 10 10'     },     defaults:{      margins:'0 5 0 0',      pressed: false,      toggleGroup:'btns',      allowDepress: false     },     items: [{      xtype:'button',      text: 'Flex: Even / Align: center',      handler: function(){       replace({        layout: {         type:'vbox',         padding:'5',         align:'center'        },        defaults:{margins:'0 0 5 0'},        items:[{         xtype:'button',         text: 'Button 1',         flex:1        },{         xtype:'button',         text: 'Button 2',         flex:1        },{         xtype:'button',         text: 'Button 3',         flex:1        },{         xtype:'button',         text: 'Button 4',         flex:1,         margins:'0'        }]       }, 'align flex even');      }     },{      xtype:'button',      text: 'Flex: Ratio / Align: center',      handler: function(){       replace({        layout: {         type:'vbox',         padding:'5',         align:'center'        },        defaults:{margins:'0 0 5 0'},        items:[{         xtype:'button',         text: 'Button 1',         flex:1        },{         xtype:'button',         text: 'Button 2',         flex:1        },{         xtype:'button',         text: 'Button 3',         flex:1        },{         xtype:'button',         text: 'Button 4',         flex:3,         margins:'0'        }]       }, 'align flex ratio');      }     },{      xtype:'button',      text: 'Flex + Stretch',      handler: function(){       replace({        layout: {         type:'vbox',         padding:'5',         align:'stretch'        },        defaults:{margins:'0 0 5 0'},        items:[{         xtype:'button',         text: 'Button 1',         flex:1        },{         xtype:'button',         text: 'Button 2',         flex:1        },{         xtype:'button',         text: 'Button 3',         flex:1        },{         xtype:'button',         text: 'Button 4',         flex:3,         margins:'0'        }]       }, 'align flex + stretch');      }     },{      xtype:'button',      text: 'Pack: start / Align: center',      handler: function(){       replace({        layout: {         type:'vbox',         padding:'5',         pack:'start',         align:'center'        },        defaults:{margins:'0 0 5 0'},        items:[{         xtype:'button',         text: 'Button 1'        },{         xtype:'button',         text: 'Button 2'        },{         xtype:'button',         text: 'Button 3'        },{         xtype:'button',         text: 'Button 4'        }]       }, 'align pack start + align center');      }     },{      xtype:'button',      text: 'Pack: center / Align: center',      handler: function(){       replace({        layout: {         type:'vbox',         padding:'5',         pack:'center',         align:'center'        },        defaults:{margins:'0 0 5 0'},        items:[{         xtype:'button',         text: 'Button 1'        },{         xtype:'button',         text: 'Button 2'        },{         xtype:'button',         text: 'Button 3'        },{         xtype:'button',         text: 'Button 4',         margins:'0'        }]       }, 'align pack center + align center');      }     },{      xtype:'button',      text: 'Pack: end / Align: center',      handler: function(){       replace({        layout: {         type:'vbox',         padding:'5',         pack:'end',         align:'center'        },        defaults:{margins:'0 0 5 0'},        items:[{         xtype:'button',         text: 'Button 1'        },{         xtype:'button',         text: 'Button 2'        },{         xtype:'button',         text: 'Button 3'        },{         xtype:'button',         text: 'Button 4',         margins:'0'        }]       }, 'align pack end + align center');      }     }]    }]   }]  }); });