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node_modules/echarts/lib/chart/helper/Polyline.js 2.77 KB
2a09d1a4   liuqimichale   添加宜春 天水 宣化
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  var graphic = require("../../util/graphic");
  
  var zrUtil = require("zrender/lib/core/util");
  
  /*
  * Licensed to the Apache Software Foundation (ASF) under one
  * or more contributor license agreements.  See the NOTICE file
  * distributed with this work for additional information
  * regarding copyright ownership.  The ASF licenses this file
  * to you under the Apache License, Version 2.0 (the
  * "License"); you may not use this file except in compliance
  * with the License.  You may obtain a copy of the License at
  *
  *   http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing,
  * software distributed under the License is distributed on an
  * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
  * KIND, either express or implied.  See the License for the
  * specific language governing permissions and limitations
  * under the License.
  */
  
  /**
   * @module echarts/chart/helper/Line
   */
  
  /**
   * @constructor
   * @extends {module:zrender/graphic/Group}
   * @alias {module:echarts/chart/helper/Polyline}
   */
  function Polyline(lineData, idx, seriesScope) {
    graphic.Group.call(this);
  
    this._createPolyline(lineData, idx, seriesScope);
  }
  
  var polylineProto = Polyline.prototype;
  
  polylineProto._createPolyline = function (lineData, idx, seriesScope) {
    // var seriesModel = lineData.hostModel;
    var points = lineData.getItemLayout(idx);
    var line = new graphic.Polyline({
      shape: {
        points: points
      }
    });
    this.add(line);
  
    this._updateCommonStl(lineData, idx, seriesScope);
  };
  
  polylineProto.updateData = function (lineData, idx, seriesScope) {
    var seriesModel = lineData.hostModel;
    var line = this.childAt(0);
    var target = {
      shape: {
        points: lineData.getItemLayout(idx)
      }
    };
    graphic.updateProps(line, target, seriesModel, idx);
  
    this._updateCommonStl(lineData, idx, seriesScope);
  };
  
  polylineProto._updateCommonStl = function (lineData, idx, seriesScope) {
    var line = this.childAt(0);
    var itemModel = lineData.getItemModel(idx);
    var visualColor = lineData.getItemVisual(idx, 'color');
    var lineStyle = seriesScope && seriesScope.lineStyle;
    var hoverLineStyle = seriesScope && seriesScope.hoverLineStyle;
  
    if (!seriesScope || lineData.hasItemOption) {
      lineStyle = itemModel.getModel('lineStyle').getLineStyle();
      hoverLineStyle = itemModel.getModel('emphasis.lineStyle').getLineStyle();
    }
  
    line.useStyle(zrUtil.defaults({
      strokeNoScale: true,
      fill: 'none',
      stroke: visualColor
    }, lineStyle));
    line.hoverStyle = hoverLineStyle;
    graphic.setHoverStyle(this);
  };
  
  polylineProto.updateLayout = function (lineData, idx) {
    var polyline = this.childAt(0);
    polyline.setShape('points', lineData.getItemLayout(idx));
  };
  
  zrUtil.inherits(Polyline, graphic.Group);
  var _default = Polyline;
  module.exports = _default;