extjs4图表绘制之折线图实现方法分析

Ext.define('ChartLineTest', {
  extend: 'Ext.panel.Panel',
  autoScroll : true,
  selectYear:null,//定义年份
  initComponent: function () {//定义初始化组件
    var me = this;
    me.store = me.createStore();//定义数据
    me.grid = me.getGridPanel();
    me.mainPanel = Ext.create('Ext.panel.Panel',{
      layout:'fit',
      items:[me.grid],
      tbar:me.createQueryTbar(),//定义查询的组件
    });

    Ext.apply(me,{
      layout:'fit',
      items:[me.mainPanel]
    });
    me.callParent();
    me.mainPanel.down('chart').on('cellclick', function(grid, td, cellIndex, record, tr, rowIndex, e, eOpts) {
      me.onCellClick(cellIndex, record);
    });
  },

  getGridPanel:function(){
    var me = this;
    return {
      xtype:'chart',
      animate : true,// 是否支持动态数据变化
        legend: {// 图例
          display: "bottom",
          spacing: 2,
          padding: 5,
          font: {
            name: 'Tahoma',
            color: '#3366FF',
            size: 12,
            bold: true
          }
        },
      store:me.store,
      axes:me.createAxes(),//定义横竖轴数据
      series:me.createSeries(),//定义图表中的数据
    }
  },
  createQueryTbar: function(){
    var me=this;
    var tbar=[
      {
        xtype : 'bo',
        fieldLabel:'选择年份',
        name:'selectYear',
        queryMode : 'local',
        editable : true,
        readOnly:false,
        labelWidth: 60,
        width:200,
        store : new Ext.data.ArrayStore({
          fields : ['id','name'],

          data : []
        }),
        valueField : 'name',
        displayField : 'id',
        triggerAction : 'all',
        autoSelect : true,
        listeners : {
          beforerender : function(){
            var newyear = Ext.Date.format(new Date(),'Y');//这是为了取现在的年份数
            var yearlist = [];
            for(var i = newyear;i>=2015;i--){
              yearlist.push([i,i]);
            }
            this.store.loadData(yearlist);
          }
        }
      },
      {xtype: 'button',text : '查找',
        listeners : {
          "click" : function() {
            var value = Ext.ComponentQuery.query('[name=selectYear]')["0"].value;
            me.selectYear = value;//赋值给selectYear属性
            me.store.load();
          }}}
    ];
    return tbar;
  },
  createStore: function () {
    //从后端请求数据
    var me = this;
    return Ext.create('Ext.data.JsonStore', {
      fields: [
        {name: 'id', mapping: 'id'},
        {name:'statTime',mapping:'statTime',type:'date',dateFormat:'time'},
        'activeCount', 'effectiveCount','effectiveProportion',
      ],
      proxy: {
        type: 'ajax',
        url: ctx+'/mvc//analyze/tblVwMonthUserStat',
        reader: {
          type: 'json',
          root: 'root',
          totalProperty: 'totalProperty'
        }
      },
      listeners: {
        'beforeload': function (store, operation, eOpts) {
          store.proxy.extraParams.selectYear = me.selectYear//赋值给selectYear属性
        }
      },
      autoLoad: true
    });
  },

  createAxes: function () {
    var me = this;
    var columns = [
      {
        type: 'Numeric',
        position: 'left',//定义位置
        minimum: 1000,
        maximum: 10000,

        label: {
          renderer: Ext.util.Format.numberRenderer('0,0')
        },
        title: '人数',
        grid: true,
      },
      {
        type: 'Numeric',
        position: 'right',
        minimum: 1000,
        maximum: 10000,

        label: {
          renderer: Ext.util.Format.numberRenderer('0,0')
        },
        title: '人数',
        grid: true,
      },
      {
        type: 'Time',
        position: 'bottom',
        fields: 'statTime',
        step: [Ext.Date.MONTH, 1],///定义间隔
        dateFormat: 'y-m',
        title: '日期',
        grid: false,

      }
    ];
    return columns;
  },
  createSeries: function () {
    var me = this;
    var columns = [
      {
        type: 'line',
        highlight: {
          size: 7,
          radius: 7
        },
        fill: false,
        // showInLegend:false,//要是为false 在坐标系中将不显示标记
        axis: 'left',
        xField: 'statTime',
        renderer: Ext.util.Format.dateRenderer('Y-m '),
        yField: 'activeCount',
        title :'活跃用户',
        //定义浮标（提示框） 显示想要显示的文字
        tips: {
          trackMouse: true,
          width: 200,
          height: 40,
          renderer: function(storeItem, item) {
            this.setTitle( "人数："+storeItem.get('activeCount')+",占比："+storeItem.get('effectiveProportion') );
          }
        },
        label: {
          display: 'insideEnd',
          field: 'activeCount',
          renderer: Ext.util.Format.numberRenderer('0'),
          orientation: 'vertical',
          font:'15px Helvetica, sans-serif',
          'text-anchor': 'end',
          color:'red',
        },
        markerConfig: {
          type: 'cross',
          size: 3,
          radius: 3,
          'stroke-width': 0
        }
      },
      {
        type: 'line',
        highlight: {
          size: 7,
          radius: 7
        },
        // selectionTolerance:0,

        axis: 'left',
        title :'有效用户',
        fill: false,
        xField: 'statTime',
        renderer: Ext.util.Format.dateRenderer('Y-m '),
        yField: 'effectiveCount',

        markerConfig: {
          type: 'circle',
          size: 3,
          radius: 3,
          'stroke-width': 0
        },
        /* style: {
          color: '#6666CC'
        },*/
        style: {
          stroke: '#00ff00',
          /* 'stroke-width': 10,
          fill: '#80A080',
          opacity: 0.2*/
        },
     /*   label: {
          display: 'middle',
          field: 'effectiveCount',
          renderer: Ext.util.Format.numberRenderer('0'),
          orientation: 'vertical',
          font: '15px Helvetica, sans-serif',
          'text-anchor': 'end',
          color: 'red',
          minMargin:100,
        },*/
        //定义坐标上的文字的属性
        label: {
          display: 'over',
          field: 'effectiveCount',
          renderer: Ext.util.Format.numberRenderer('0'),
          orientation: 'vertical',//数值显示的方式 ‘horizontal'水平显示
          font: '15px Helvetica, sans-serif',
          'text-anchor': 'start',
          color: 'red',//字体 颜色
          //对坐标上的文字进行操作，当数值大于5000的时候显示另一种颜色
          renderer: function(value, label, storeItem, item, i, display, animate, index) {

            if (value >= 5000) {
              label.setAttributes({fill:'#080',});
              value = value;
            }
            return value;
          }
        }
      },

    ];
    return columns;
  }

});