zh/builder/src/echarts3/visual/symbol.js

export default function (seriesType, defaultSymbolType, legendSymbol, ecModel, api) {
  // Encoding visual for all series include which is filtered for legend drawing
  ecModel.eachRawSeriesByType(seriesType, function (seriesModel) {
    var data = seriesModel.getData();
    var symbolType = seriesModel.get('symbol') || defaultSymbolType;
    var symbolSize = seriesModel.get('symbolSize');
    data.setVisual({
      legendSymbol: legendSymbol || symbolType,
      symbol: symbolType,
      symbolSize: symbolSize
    }); // Only visible series has each data be visual encoded

    if (!ecModel.isSeriesFiltered(seriesModel)) {
      if (typeof symbolSize === 'function') {
        data.each(function (idx) {
          var rawValue = seriesModel.getRawValue(idx); // FIXME

          var params = seriesModel.getDataParams(idx);
          data.setItemVisual(idx, 'symbolSize', symbolSize(rawValue, params));
        });
      }

      data.each(function (idx) {
        var itemModel = data.getItemModel(idx);
        var itemSymbolType = itemModel.getShallow('symbol', true);
        var itemSymbolSize = itemModel.getShallow('symbolSize', true); // If has item symbol

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

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