extjs ColumnChart设置不同的颜色实现代码

Ext.onReady(function(){ 
//定义store 
var chartStore = new Ext.data.JsonStore({ 
root:'root', 
fields:[ 
{name:'ne',type:'string'},//网元 
{name:'confine',type:'int'},//阀值 
{name:'bill',type:'string'}//工单数 
], 
sortInfo:{field: 'bill', direction: 'ASC'} 
}); 
//测试数据 
var obj={ 
root:[ 
{ne:'网元一',confine:80,bill:150}, 
{ne:'网元二',confine:150,bill:140}, 
{ne:'网元三',confine:180,bill:160}, 
{ne:'网元五',confine:120,bill:180}, 
{ne:'网元六',confine:165,bill:13}, 
{ne:'网元七',confine:54,bill:12}, 
{ne:'网元八',confine:55,bill:44}, 
{ne:'网元九',confine:33,bill:113}, 
{ne:'网元十',confine:122,bill:77} 
] 
} 
//载入数据 
chartStore.loadData(obj); 
//pushlet 回调函数 
window.onData = function (event) { 
//alert(event.get("data1")); 
var obj1 = eval('('+event.get("data1")+')'); 
//obj=obj1; 
//chartStore.loadData(obj); 
} 
// 系统属性定义列数据模型 
var cm = new Ext.grid.ColumnModel([new Ext.grid.RowNumberer(), 
{header:'网元',dataIndex:'ne'}, 
{header:'工单量',dataIndex:'bill',renderer:function(value, cellMeta, record, rowIndex, columnIndex, store){ 
var confine = record.data['confine']; 
/*if(value>=confine){ 
//cellMeta.css='x-grid-back-red'; 
var row = cm.findColumnIndex(rowIndex); 
row.css='x-grid-back-red'; 
}*/ 
return value; 
}}, 
{header:'阀值',dataIndex:'confine'} 
//{header:'操作',dataIndex:'state',renderer:renderOperate} 
]); 
var grid = new Ext.grid.EditorGridPanel({ 
title:'工单积压监控统计', 
cm:cm, 
store:chartStore, 
sm : new Ext.grid.RowSelectionModel({ 
singleSelect : true 
}), 
stripeRows:true, 
loadMask:true, 
clicksToEdit : 2,//双击触发, 
enableColumnMove : false, 
trackMouseOver : false, 
stripeRows:true, 
frame:true, 
loadMask:{ 
msg:"数据加载中....." 
}, 
viewConfig:{ 
forceFit:true, 
columnsText:'显示列', 
scrollOffset:25, 
sortAscText:'升序', 
sortDescText:'降序' 
}, 
autoExpandColumn:'desc', 
bbar:new Ext.PagingToolbar({ 
pageSize:24, 
store:chartStore, 
displayInfo:true, 
displayMsg:'显示第 {0} 条到第 {1} 条记录,总共 {2} 条', 
emptyMsg:'无记录' 
}), 
viewConfig:{forceFit:true,sortAscText:'正序',sortDescText:'降序', 
getRowClass : function(record,rowIndex,rowParams,store){ 
if(record.data.bill>=record.data.confine){ 
return 'x-grid-back-red'; 
} 
} 
} 
}); 
var linechart = new Ext.chart.LineChart({ 
title:'工单积压图表', 
xtype:'linechart', 
url: AIUPP_ROOT+'/css/resources/charts.swf', 
store:chartStore, 
//xField: 'label', 
//yField:'alarmCount', 
//定义tip内容 
tipRenderer : function(chart, record){ 
//alert(record.get('startTime')); 
var ne = record.get('ne'); 
var str = String.format('网元:{0}\n工单量:{1}\n阀值:{2}',ne,record.get('bill'),record.get('confine')) 
return str; 
}, 
//定义两个图表,一个是柱状图,一个是折线图 
series: [{ 
type: 'column', 
displayName: '工单个数', 
id:"billId", 
xField: 'ne', 
yField: 'bill', 
style: { 
color:0x99BBE8, 
size: 20 
} 
},{ 
type:'column', 
displayName: '阀值', 
xField: 'ne', 
yField: 'confine', 
style: { 
color: '#ff0000', 
size: 20 
} 
}], 
listeners:{ 
"show":function(){ 
var c = linechart.series; 
//alert(c[1].store); 
//c[1].style.color='#00ff00'; 
} 
}, 
//定义图表样式 
chartStyle: { 
legend:{ 
display: "top" 
}, 
xAxis: { 
color: 0x69aBc8, 
majorTicks: {color: 0x69aBc8, length:4}, 
minorTicks: {color: 0x69aBc8, length: 2}, 
majorGridLines:{size: 1, color: 0xeeeeee} 
}, 
yAxis: { 
color: 0x69aBc8, 
majorTicks: {color: 0x69aBc8, length: 4}, 
minorTicks: {color: 0x69aBc8, length: 2}, 
majorGridLines: {size: 1, color: 0xdfe8f6} 
} 
} 
}); 
var contentPanel = new Ext.TabPanel({ 
region:'center', 
enableTabScroll:true, 
activeTab:0, 
closable:false, 
split : false, 
collapsible : false, 
layoutOnTabChange:true, 
items:[linechart,grid] 
}); 
// 间隔时间 
var interval = new Ext.form.TextField({ 
name:'interval', 
fieldLabel:'间隔时间', 
id:"searchInterval" 
}); 
// 分组方式 
var groupType = new Ext.form.RadioGroup({ 
name:'groupType', 
fieldLabel:'分组方式', 
id:"searchGroupType", 
items:[ 
new Ext.form.Radio({ 
name:"groupType", 
inputValue:"1", 
boxLabel:"地区" 
}), 
new Ext.form.Radio({ 
name:"groupType", 
inputValue:"2", 
boxLabel:"地区+网元" 
}), 
new Ext.form.Radio({ 
name:"groupType", 
inputValue:"3", 
boxLabel:"地区+网元+业务代码" 
}) 
] 
}); 
// 开始按钮 
var startBtn = new Ext.Button({ 
text:'开始', 
minWidth:80, 
handler:function(){ 
//store.load(); 
} 
}); 
// 停止按钮 
var stopBtn = new Ext.Button({ 
text:'停止', 
minWidth:80, 
handler:function(){ 
//store.load(); 
} 
}); 
var searchPanel = new Ext.form.FormPanel({ 
labelAlign:'left', 
labelWidth:60, 
frame:true, 
layout:'column', 
items:[ 
{columnWidth:.28,layout:'form',items:[interval]}, 
{columnWidth:.38,layout:'form',items:[groupType]}, 
{columnWidth:.10,layout:'form',items:[startBtn]}, 
{columnWidth:.16,layout:'form',items:[stopBtn]} 
] 
}); 
var vp = new Ext.Viewport({ 
layout:'border', 
border:false, 
hideBorders:true, 
bufferResize:100, 
items:[ 
//{region:'north',title:'::监控条件',autoHeight:true,margins:'5 5 10 5',collapsible:true,items:[searchPanel]}, 
{region:'center',layout:'fit',margins:'5 5 5 5',items:[contentPanel]} 
] 
}); 
vp.show(); 
});