react-svg-line-chart/es/index.js

A lightweight responsive line chart component for React using only SVG

var _extends = Object.assign || function (target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i]; for (var key in source) { if (Object.prototype.hasOwnProperty.call(source, key)) { target[key] = source[key]; } } } return target; };

var _templateObject = _taggedTemplateLiteralLoose(["\n  display: block;\n  overflow: visible;\n"], ["\n  display: block;\n  overflow: visible;\n"]);

function _objectWithoutProperties(obj, keys) { var target = {}; for (var i in obj) { if (keys.indexOf(i) >= 0) continue; if (!Object.prototype.hasOwnProperty.call(obj, i)) continue; target[i] = obj[i]; } return target; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; }

function _taggedTemplateLiteralLoose(strings, raw) { strings.raw = raw; return strings; }

import PropTypes from "prop-types";
import React from "react";
import styled from "styled-components";

var Svg = styled.svg(_templateObject);

import Grid from "./components/Grid";
import Path from "./components/Path";
import Points from "./components/Points";
import Axis from "./components/Axis";
import Labels from "./components/Labels";

function round(n) {
  return Math.round(n * 100) / 100;
}

var LineChart = function (_React$Component) {
  _inherits(LineChart, _React$Component);

  function LineChart() {
    _classCallCheck(this, LineChart);

    return _possibleConstructorReturn(this, _React$Component.apply(this, arguments));
  }

  LineChart.prototype.getMinX = function getMinX() {
    var data = this.props.data;

    return data.length > 0 ? data[0].x : 0;
  };

  LineChart.prototype.getMaxX = function getMaxX() {
    var data = this.props.data;

    return data.length > 0 ? data[data.length - 1].x : 0;
  };

  LineChart.prototype.getMinY = function getMinY() {
    return 0;
  };

  LineChart.prototype.getMaxY = function getMaxY() {
    var _props = this.props,
        data = _props.data,
        labelsCountY = _props.labelsCountY;

    var yStep = labelsCountY > 0 ? labelsCountY : 1;
    var maxY = data.length > 0 ? data.reduce(function (max, point) {
      return point.y > max ? point.y : max;
    }, data[0].y) : 0;
    return maxY ? Math.ceil(maxY / yStep) * yStep : yStep;
  };

  LineChart.prototype.getSvgX = function getSvgX(x) {
    var viewBoxWidth = this.props.viewBoxWidth;

    var minX = this.getMinX();
    var maxX = this.getMaxX();
    var paddingLeft = this.getLabelsYWidth();
    return round((x - minX) / (maxX - minX) * (Math.abs(viewBoxWidth) - paddingLeft));
  };

  LineChart.prototype.getSvgY = function getSvgY(y) {
    var _props2 = this.props,
        labelsVisible = _props2.labelsVisible,
        viewBoxHeight = _props2.viewBoxHeight,
        labelsOffsetX = _props2.labelsOffsetX,
        labelsHeightX = _props2.labelsHeightX;

    var paddingBottom = labelsVisible ? labelsHeightX + labelsOffsetX : 0;
    var height = Math.abs(viewBoxHeight) - paddingBottom;
    var maxY = this.getMaxY();
    return round(height - y / maxY * height);
  };

  LineChart.prototype.getLabelsYWidth = function getLabelsYWidth() {
    var _props3 = this.props,
        labelsVisible = _props3.labelsVisible,
        labelsOffsetY = _props3.labelsOffsetY,
        labelsCharacterWidth = _props3.labelsCharacterWidth;

    var maxY = this.getMaxY();
    return labelsVisible ? maxY.toString().length * labelsCharacterWidth + labelsOffsetY : 0;
  };

  LineChart.prototype.render = function render() {
    var _props4 = this.props,
        viewBoxHeight = _props4.viewBoxHeight,
        viewBoxWidth = _props4.viewBoxWidth,
        props = _objectWithoutProperties(_props4, ["viewBoxHeight", "viewBoxWidth"]);

    var minX = this.getMinX();
    var maxX = this.getMaxX();
    var maxY = this.getMaxY();
    var minY = this.getMinY();

    var commonProps = {
      getX: this.getSvgX.bind(this),
      getY: this.getSvgY.bind(this),
      maxX: maxX,
      maxY: maxY,
      minX: minX,
      minY: minY
    };

    return React.createElement(
      Svg,
      { viewBox: "0 0 " + Math.abs(viewBoxWidth) + " " + Math.abs(viewBoxHeight) },
      React.createElement(
        "g",
        { transform: "translate(" + this.getLabelsYWidth() + ", 0)" },
        React.createElement(Grid, _extends({}, props, commonProps)),
        React.createElement(Path, _extends({}, props, commonProps)),
        React.createElement(Axis, _extends({}, props, commonProps)),
        React.createElement(Points, _extends({}, props, commonProps)),
        React.createElement(Labels, _extends({}, props, commonProps))
      )
    );
  };

  return LineChart;
}(React.Component);

LineChart.propTypes = process.env.NODE_ENV !== "production" ? _extends({
  data: PropTypes.arrayOf(PropTypes.shape({
    x: PropTypes.number,
    y: PropTypes.number
  })).isRequired,
  viewBoxHeight: PropTypes.number,
  viewBoxWidth: PropTypes.number
}, Grid.propTypes, Axis.propTypes, Points.propTypes, Labels.propTypes) : {};

LineChart.defaultProps = _extends({
  data: [],
  viewBoxHeight: 300,
  viewBoxWidth: 800
}, Grid.defaultProps, Axis.defaultProps, Points.defaultProps, Labels.defaultProps);

export default LineChart;