@mui/x-charts/modern/LineChart/AreaPlot.js

The community edition of the Charts components (MUI X).

import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/esm/objectWithoutPropertiesLoose";
import _extends from "@babel/runtime/helpers/esm/extends";
const _excluded = ["slots", "slotProps", "onItemClick", "skipAnimation"];
import * as React from 'react';
import PropTypes from 'prop-types';
import { area as d3Area } from '@mui/x-charts-vendor/d3-shape';
import { useCartesianContext } from '../context/CartesianProvider';
import { AreaElement } from './AreaElement';
import { getValueToPositionMapper } from '../hooks/useScale';
import getCurveFactory from '../internals/getCurve';
import { DEFAULT_X_AXIS_KEY } from '../constants';
import { useChartGradient } from '../internals/components/ChartsAxesGradients';
import { useLineSeries } from '../hooks/useSeries';
import { jsx as _jsx } from "react/jsx-runtime";
const useAggregatedData = () => {
  const seriesData = useLineSeries();
  const axisData = useCartesianContext();
  if (seriesData === undefined) {
    return [];
  }
  const {
    series,
    stackingGroups
  } = seriesData;
  const {
    xAxis,
    yAxis,
    xAxisIds,
    yAxisIds
  } = axisData;
  const defaultXAxisId = xAxisIds[0];
  const defaultYAxisId = yAxisIds[0];
  return stackingGroups.flatMap(({
    ids: groupIds
  }) => {
    return [...groupIds].reverse() // Revert stacked area for a more pleasant animation
    .map(seriesId => {
      const {
        xAxisId: xAxisIdProp,
        yAxisId: yAxisIdProp,
        xAxisKey = defaultXAxisId,
        yAxisKey = defaultYAxisId,
        stackedData,
        data,
        connectNulls,
        baseline
      } = series[seriesId];
      const xAxisId = xAxisIdProp ?? xAxisKey;
      const yAxisId = yAxisIdProp ?? yAxisKey;
      const xScale = getValueToPositionMapper(xAxis[xAxisId].scale);
      const yScale = yAxis[yAxisId].scale;
      const xData = xAxis[xAxisId].data;
      const gradientUsed = yAxis[yAxisId].colorScale && [yAxisId, 'y'] || xAxis[xAxisId].colorScale && [xAxisId, 'x'] || undefined;
      if (process.env.NODE_ENV !== 'production') {
        if (xData === undefined) {
          throw new Error(`MUI X: ${xAxisId === DEFAULT_X_AXIS_KEY ? 'The first `xAxis`' : `The x-axis with id "${xAxisId}"`} should have data property to be able to display a line plot.`);
        }
        if (xData.length < stackedData.length) {
          throw new Error(`MUI X: The data length of the x axis (${xData.length} items) is lower than the length of series (${stackedData.length} items).`);
        }
      }
      const areaPath = d3Area().x(d => xScale(d.x)).defined((_, i) => connectNulls || data[i] != null).y0(d => {
        if (typeof baseline === 'number') {
          return yScale(baseline);
        }
        if (baseline === 'max') {
          return yScale.range()[1];
        }
        if (baseline === 'min') {
          return yScale.range()[0];
        }
        const value = d.y && yScale(d.y[0]);
        if (Number.isNaN(value)) {
          return yScale.range()[0];
        }
        return value;
      }).y1(d => d.y && yScale(d.y[1]));
      const curve = getCurveFactory(series[seriesId].curve);
      const formattedData = xData?.map((x, index) => ({
        x,
        y: stackedData[index]
      })) ?? [];
      const d3Data = connectNulls ? formattedData.filter((_, i) => data[i] != null) : formattedData;
      const d = areaPath.curve(curve)(d3Data) || '';
      return _extends({}, series[seriesId], {
        gradientUsed,
        d,
        seriesId
      });
    });
  });
};

/**
 * Demos:
 *
 * - [Lines](https://mui.com/x/react-charts/lines/)
 * - [Areas demonstration](https://mui.com/x/react-charts/areas-demo/)
 * - [Stacking](https://mui.com/x/react-charts/stacking/)
 *
 * API:
 *
 * - [AreaPlot API](https://mui.com/x/api/charts/area-plot/)
 */
function AreaPlot(props) {
  const {
      slots,
      slotProps,
      onItemClick,
      skipAnimation
    } = props,
    other = _objectWithoutPropertiesLoose(props, _excluded);
  const getGradientId = useChartGradient();
  const completedData = useAggregatedData();
  return /*#__PURE__*/_jsx("g", _extends({}, other, {
    children: completedData.map(({
      d,
      seriesId,
      color,
      area,
      gradientUsed
    }) => !!area && /*#__PURE__*/_jsx(AreaElement, {
      id: seriesId,
      d: d,
      color: color,
      gradientId: gradientUsed && getGradientId(...gradientUsed),
      slots: slots,
      slotProps: slotProps,
      onClick: onItemClick && (event => onItemClick(event, {
        type: 'line',
        seriesId
      })),
      skipAnimation: skipAnimation
    }, seriesId))
  }));
}
process.env.NODE_ENV !== "production" ? AreaPlot.propTypes = {
  // ----------------------------- Warning --------------------------------
  // | These PropTypes are generated from the TypeScript type definitions |
  // | To update them edit the TypeScript types and run "pnpm proptypes"  |
  // ----------------------------------------------------------------------
  /**
   * Callback fired when a line area item is clicked.
   * @param {React.MouseEvent<SVGPathElement, MouseEvent>} event The event source of the callback.
   * @param {LineItemIdentifier} lineItemIdentifier The line item identifier.
   */
  onItemClick: PropTypes.func,
  /**
   * If `true`, animations are skipped.
   * @default false
   */
  skipAnimation: PropTypes.bool,
  /**
   * The props used for each component slot.
   * @default {}
   */
  slotProps: PropTypes.object,
  /**
   * Overridable component slots.
   * @default {}
   */
  slots: PropTypes.object
} : void 0;
export { AreaPlot };