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node_modules/echarts/lib/chart/map/mapSymbolLayout.js 3.18 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.
  */
  
  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.
  */
  function _default(ecModel) {
    var processedMapType = {};
    ecModel.eachSeriesByType('map', function (mapSeries) {
      var mapType = mapSeries.getMapType();
  
      if (mapSeries.getHostGeoModel() || processedMapType[mapType]) {
        return;
      }
  
      var mapSymbolOffsets = {};
      zrUtil.each(mapSeries.seriesGroup, function (subMapSeries) {
        var geo = subMapSeries.coordinateSystem;
        var data = subMapSeries.originalData;
  
        if (subMapSeries.get('showLegendSymbol') && ecModel.getComponent('legend')) {
          data.each(data.mapDimension('value'), function (value, idx) {
            var name = data.getName(idx);
            var region = geo.getRegion(name); // If input series.data is [11, 22, '-'/null/undefined, 44],
            // it will be filled with NaN: [11, 22, NaN, 44] and NaN will
            // not be drawn. So here must validate if value is NaN.
  
            if (!region || isNaN(value)) {
              return;
            }
  
            var offset = mapSymbolOffsets[name] || 0;
            var point = geo.dataToPoint(region.center);
            mapSymbolOffsets[name] = offset + 1;
            data.setItemLayout(idx, {
              point: point,
              offset: offset
            });
          });
        }
      }); // Show label of those region not has legendSymbol(which is offset 0)
  
      var data = mapSeries.getData();
      data.each(function (idx) {
        var name = data.getName(idx);
        var layout = data.getItemLayout(idx) || {};
        layout.showLabel = !mapSymbolOffsets[name];
        data.setItemLayout(idx, layout);
      });
      processedMapType[mapType] = true;
    });
  }
  
  module.exports = _default;