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

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

import _extends from "@babel/runtime/helpers/esm/extends";
import _objectWithoutPropertiesLoose from "@babel/runtime/helpers/esm/objectWithoutPropertiesLoose";
const _excluded = ["slots", "slotProps"];
import * as React from 'react';
import PropTypes from 'prop-types';
import { line as d3Line } from 'd3-shape';
import { SeriesContext } from '../context/SeriesContextProvider';
import { CartesianContext } from '../context/CartesianContextProvider';
import { LineElement } from './LineElement';
import { getValueToPositionMapper } from '../hooks/useScale';
import getCurveFactory from '../internals/getCurve';
import { DEFAULT_X_AXIS_KEY } from '../constants';
import { jsx as _jsx } from "react/jsx-runtime";
/**
 * Demos:
 *
 * - [Lines](https://mui.com/x/react-charts/lines/)
 * - [Line demonstration](https://mui.com/x/react-charts/line-demo/)
 *
 * API:
 *
 * - [LinePlot API](https://mui.com/x/api/charts/line-plot/)
 */
function LinePlot(props) {
  const {
      slots,
      slotProps
    } = props,
    other = _objectWithoutPropertiesLoose(props, _excluded);
  const seriesData = React.useContext(SeriesContext).line;
  const axisData = React.useContext(CartesianContext);
  if (seriesData === undefined) {
    return null;
  }
  const {
    series,
    stackingGroups
  } = seriesData;
  const {
    xAxis,
    yAxis,
    xAxisIds,
    yAxisIds
  } = axisData;
  const defaultXAxisId = xAxisIds[0];
  const defaultYAxisId = yAxisIds[0];
  return /*#__PURE__*/_jsx("g", _extends({}, other, {
    children: stackingGroups.flatMap(({
      ids: groupIds
    }) => {
      return groupIds.flatMap(seriesId => {
        const {
          xAxisKey = defaultXAxisId,
          yAxisKey = defaultYAxisId,
          stackedData,
          data,
          connectNulls
        } = series[seriesId];
        const xScale = getValueToPositionMapper(xAxis[xAxisKey].scale);
        const yScale = yAxis[yAxisKey].scale;
        const xData = xAxis[xAxisKey].data;
        if (process.env.NODE_ENV !== 'production') {
          if (xData === undefined) {
            throw new Error(`MUI-X-Charts: ${xAxisKey === DEFAULT_X_AXIS_KEY ? 'The first `xAxis`' : `The x-axis with id "${xAxisKey}"`} should have data property to be able to display a line plot`);
          }
          if (xData.length < stackedData.length) {
            throw new Error(`MUI-X-Charts: The data length of the x axis (${xData.length} items) is lower than the length of series (${stackedData.length} items)`);
          }
        }
        const linePath = d3Line().x(d => xScale(d.x)).defined((_, i) => connectNulls || data[i] != null).y(d => 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;
        return /*#__PURE__*/_jsx(LineElement, {
          id: seriesId,
          d: linePath.curve(curve)(d3Data) || undefined,
          color: series[seriesId].color,
          highlightScope: series[seriesId].highlightScope,
          slots: slots,
          slotProps: slotProps
        }, seriesId);
      });
    })
  }));
}
process.env.NODE_ENV !== "production" ? LinePlot.propTypes = {
  // ----------------------------- Warning --------------------------------
  // | These PropTypes are generated from the TypeScript type definitions |
  // | To update them edit the TypeScript types and run "yarn proptypes"  |
  // ----------------------------------------------------------------------
  /**
   * The props used for each component slot.
   * @default {}
   */
  slotProps: PropTypes.object,
  /**
   * Overridable component slots.
   * @default {}
   */
  slots: PropTypes.object
} : void 0;
export { LinePlot };