@mui/x-charts/internals/plugins/featurePlugins/useChartHighlight/createIsFaded.mjs

The community edition of MUI X Charts components.

function alwaysFalse() {
  return false;
}

/**
 * The isFade logic for main charts (those that are identified by an id and a dataIndex)
 */
export function createIsFaded(highlightScope, highlightedItem) {
  if (!highlightScope || !highlightedItem) {
    return alwaysFalse;
  }
  return function isFaded(item) {
    if (!item) {
      return false;
    }
    if (highlightScope.fade === 'series') {
      return item.seriesId === highlightedItem.seriesId && item.dataIndex !== highlightedItem.dataIndex;
    }
    if (highlightScope.fade === 'global') {
      return item.seriesId !== highlightedItem.seriesId || item.dataIndex !== highlightedItem.dataIndex;
    }
    return false;
  };
}