Scripts/OtherJs/eCharts/echarts-2.2.1/src/chart/base.js

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/**
 * echarts图表基类
 *
 * @desc echarts基于Canvas，纯Javascript图表库，提供直观，生动，可交互，可个性化定制的数据统计图表。
 * @author Kener (@Kener-林峰, kener.linfeng@gmail.com)
 *
 */
define(function (require) {
    // 图形依赖
    var ImageShape = require('zrender/shape/Image');
    var IconShape = require('../util/shape/Icon');
    var MarkLineShape = require('../util/shape/MarkLine');
    var SymbolShape = require('../util/shape/Symbol');
    var PolylineShape = require('zrender/shape/Polyline');
    var ShapeBundle = require('zrender/shape/ShapeBundle');
    
    var ecConfig = require('../config');
    var ecData = require('../util/ecData');
    var ecAnimation = require('../util/ecAnimation');
    var ecEffect = require('../util/ecEffect');
    var accMath = require('../util/accMath');
    var ComponentBase = require('../component/base');
    var EdgeBundling = require('../layout/EdgeBundling');

    var zrUtil = require('zrender/tool/util');
    var zrArea = require('zrender/tool/area');

    // Some utility functions
    function isCoordAvailable(coord) {
        return coord.x != null && coord.y != null;
    }
    
    function Base(ecTheme, messageCenter, zr, option, myChart) {

        ComponentBase.call(this, ecTheme, messageCenter, zr, option, myChart);

        var self = this;
        this.selectedMap = {};
        this.lastShapeList = [];
        this.shapeHandler = {
            onclick: function () {
                self.isClick = true;
            },
            
            ondragover: function (param) {
                // 返回触发可计算特性的图形提示
                var calculableShape = param.target;
                calculableShape.highlightStyle = calculableShape.highlightStyle || {};
                
                // 备份特出特性
                var highlightStyle = calculableShape.highlightStyle;
                var brushType = highlightStyle.brushTyep;
                var strokeColor = highlightStyle.strokeColor;
                var lineWidth = highlightStyle.lineWidth;
                
                highlightStyle.brushType = 'stroke';
                highlightStyle.strokeColor = self.ecTheme.calculableColor
                                             || ecConfig.calculableColor;
                highlightStyle.lineWidth = calculableShape.type === 'icon' ? 30 : 10;