echarts/lib/visual/dataColor.js

A powerful charting and visualization library for browser

var _util = require("zrender/lib/core/util");

var createHashMap = _util.createHashMap;

// Pick color from palette for each data item.
// Applicable for charts that require applying color palette
// in data level (like pie, funnel, chord).
function _default(seriesType) {
  return {
    getTargetSeries: function (ecModel) {
      // Pie and funnel may use diferrent scope
      var paletteScope = {};
      var seiresModelMap = createHashMap();
      ecModel.eachSeriesByType(seriesType, function (seriesModel) {
        seriesModel.__paletteScope = paletteScope;
        seiresModelMap.set(seriesModel.uid, seriesModel);
      });
      return seiresModelMap;
    },
    reset: function (seriesModel, ecModel) {
      var dataAll = seriesModel.getRawData();
      var idxMap = {};
      var data = seriesModel.getData();
      data.each(function (idx) {
        var rawIdx = data.getRawIndex(idx);
        idxMap[rawIdx] = idx;
      });
      dataAll.each(function (rawIdx) {
        var filteredIdx = idxMap[rawIdx]; // If series.itemStyle.normal.color is a function. itemVisual may be encoded

        var singleDataColor = filteredIdx != null && data.getItemVisual(filteredIdx, 'color', true);

        if (!singleDataColor) {
          // FIXME Performance
          var itemModel = dataAll.getItemModel(rawIdx);
          var color = itemModel.get('itemStyle.color') || seriesModel.getColorFromPalette(dataAll.getName(rawIdx) || rawIdx + '', seriesModel.__paletteScope, dataAll.count()); // Legend may use the visual info in data before processed

          dataAll.setItemVisual(rawIdx, 'color', color); // Data is not filtered

          if (filteredIdx != null) {
            data.setItemVisual(filteredIdx, 'color', color);
          }
        } else {
          // Set data all color for legend
          dataAll.setItemVisual(rawIdx, 'color', singleDataColor);
        }
      });
    }
  };
}

module.exports = _default;