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node_modules/echarts/src/chart/graph/edgeVisual.js 2.85 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.
  */
  
  
  function normalize(a) {
      if (!(a instanceof Array)) {
          a = [a, a];
      }
      return a;
  }
  
  export default function (ecModel) {
      ecModel.eachSeriesByType('graph', function (seriesModel) {
          var graph = seriesModel.getGraph();
          var edgeData = seriesModel.getEdgeData();
          var symbolType = normalize(seriesModel.get('edgeSymbol'));
          var symbolSize = normalize(seriesModel.get('edgeSymbolSize'));
  
          var colorQuery = 'lineStyle.color'.split('.');
          var opacityQuery = 'lineStyle.opacity'.split('.');
  
          edgeData.setVisual('fromSymbol', symbolType && symbolType[0]);
          edgeData.setVisual('toSymbol', symbolType && symbolType[1]);
          edgeData.setVisual('fromSymbolSize', symbolSize && symbolSize[0]);
          edgeData.setVisual('toSymbolSize', symbolSize && symbolSize[1]);
          edgeData.setVisual('color', seriesModel.get(colorQuery));
          edgeData.setVisual('opacity', seriesModel.get(opacityQuery));
  
          edgeData.each(function (idx) {
              var itemModel = edgeData.getItemModel(idx);
              var edge = graph.getEdgeByIndex(idx);
              var symbolType = normalize(itemModel.getShallow('symbol', true));
              var symbolSize = normalize(itemModel.getShallow('symbolSize', true));
              // Edge visual must after node visual
              var color = itemModel.get(colorQuery);
              var opacity = itemModel.get(opacityQuery);
              switch (color) {
                  case 'source':
                      color = edge.node1.getVisual('color');
                      break;
                  case 'target':
                      color = edge.node2.getVisual('color');
                      break;
              }
  
              symbolType[0] && edge.setVisual('fromSymbol', symbolType[0]);
              symbolType[1] && edge.setVisual('toSymbol', symbolType[1]);
              symbolSize[0] && edge.setVisual('fromSymbolSize', symbolSize[0]);
              symbolSize[1] && edge.setVisual('toSymbolSize', symbolSize[1]);
  
              edge.setVisual('color', color);
              edge.setVisual('opacity', opacity);
          });
      });
  }