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node_modules/echarts/src/chart/helper/Polyline.js 2.89 KB
aaac7fed   liuqimichale   add
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  /*
  * 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
   */
  
  import * as graphic from '../../util/graphic';
  import * as zrUtil from 'zrender/src/core/util';
  
  /**
   * @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);
  
  export default Polyline;