public/zh/builder/src/echarts/visual/symbol.js

/*
* 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.
*/
import { isFunction } from 'zrender/src/core/util';
export default function (seriesType, defaultSymbolType, legendSymbol) {
  // Encoding visual for all series include which is filtered for legend drawing
  return {
    seriesType: seriesType,
    // For legend.
    performRawSeries: true,
    reset: function (seriesModel, ecModel, api) {
      var data = seriesModel.getData();
      var symbolType = seriesModel.get('symbol');
      var symbolSize = seriesModel.get('symbolSize');
      var keepAspect = seriesModel.get('symbolKeepAspect');
      var hasSymbolTypeCallback = isFunction(symbolType);
      var hasSymbolSizeCallback = isFunction(symbolSize);
      var hasCallback = hasSymbolTypeCallback || hasSymbolSizeCallback;
      var seriesSymbol = !hasSymbolTypeCallback && symbolType ? symbolType : defaultSymbolType;
      var seriesSymbolSize = !hasSymbolSizeCallback ? symbolSize : null;
      data.setVisual({
        legendSymbol: legendSymbol || seriesSymbol,
        // If seting callback functions on `symbol` or `symbolSize`, for simplicity and avoiding
        // to bring trouble, we do not pick a reuslt from one of its calling on data item here,
        // but just use the default value. Callback on `symbol` or `symbolSize` is convenient in
        // some cases but generally it is not recommanded.
        symbol: seriesSymbol,
        symbolSize: seriesSymbolSize,
        symbolKeepAspect: keepAspect
      }); // Only visible series has each data be visual encoded

      if (ecModel.isSeriesFiltered(seriesModel)) {
        return;
      }

      function dataEach(data, idx) {
        if (hasCallback) {
          var rawValue = seriesModel.getRawValue(idx);
          var params = seriesModel.getDataParams(idx);
          hasSymbolTypeCallback && data.setItemVisual(idx, 'symbol', symbolType(rawValue, params));
          hasSymbolSizeCallback && data.setItemVisual(idx, 'symbolSize', symbolSize(rawValue, params));
        }

        if (data.hasItemOption) {
          var itemModel = data.getItemModel(idx);
          var itemSymbolType = itemModel.getShallow('symbol', true);
          var itemSymbolSize = itemModel.getShallow('symbolSize', true);
          var itemSymbolKeepAspect = itemModel.getShallow('symbolKeepAspect', true); // If has item symbol

          if (itemSymbolType != null) {
            data.setItemVisual(idx, 'symbol', itemSymbolType);
          }

          if (itemSymbolSize != null) {
            // PENDING Transform symbolSize ?
            data.setItemVisual(idx, 'symbolSize', itemSymbolSize);
          }

          if (itemSymbolKeepAspect != null) {
            data.setItemVisual(idx, 'symbolKeepAspect', itemSymbolKeepAspect);
          }
        }
      }

      return {
        dataEach: data.hasItemOption || hasCallback ? dataEach : null
      };
    }
  };
}