recharts/es6/component/Text.js

React charts

function _typeof(obj) { "@babel/helpers - typeof"; if (typeof Symbol === "function" && typeof Symbol.iterator === "symbol") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj; }; } return _typeof(obj); }

import _isNil from "lodash/isNil";

function _extends() { _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; }; return _extends.apply(this, arguments); }

function _objectWithoutProperties(source, excluded) { if (source == null) return {}; var target = _objectWithoutPropertiesLoose(source, excluded); var key, i; if (Object.getOwnPropertySymbols) { var sourceSymbolKeys = Object.getOwnPropertySymbols(source); for (i = 0; i < sourceSymbolKeys.length; i++) { key = sourceSymbolKeys[i]; if (excluded.indexOf(key) >= 0) continue; if (!Object.prototype.propertyIsEnumerable.call(source, key)) continue; target[key] = source[key]; } } return target; }

function _objectWithoutPropertiesLoose(source, excluded) { if (source == null) return {}; var target = {}; var sourceKeys = Object.keys(source); var key, i; for (i = 0; i < sourceKeys.length; i++) { key = sourceKeys[i]; if (excluded.indexOf(key) >= 0) continue; target[key] = source[key]; } return target; }

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

function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }

function _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }

function _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }

function _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }

function _possibleConstructorReturn(self, call) { if (call && (_typeof(call) === "object" || typeof call === "function")) { return call; } return _assertThisInitialized(self); }

function _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return self; }

function _isNativeReflectConstruct() { if (typeof Reflect === "undefined" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === "function") return true; try { Boolean.prototype.valueOf.call(Reflect.construct(Boolean, [], function () {})); return true; } catch (e) { return false; } }

function _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }

function _slicedToArray(arr, i) { return _arrayWithHoles(arr) || _iterableToArrayLimit(arr, i) || _unsupportedIterableToArray(arr, i) || _nonIterableRest(); }

function _nonIterableRest() { throw new TypeError("Invalid attempt to destructure non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); }

function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }

function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }

function _iterableToArrayLimit(arr, i) { if (typeof Symbol === "undefined" || !(Symbol.iterator in Object(arr))) return; var _arr = []; var _n = true; var _d = false; var _e = undefined; try { for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) { _arr.push(_s.value); if (i && _arr.length === i) break; } } catch (err) { _d = true; _e = err; } finally { try { if (!_n && _i["return"] != null) _i["return"](); } finally { if (_d) throw _e; } } return _arr; }

function _arrayWithHoles(arr) { if (Array.isArray(arr)) return arr; }

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

import React, { Component } from 'react';
import reduceCSSCalc from 'reduce-css-calc';
import classNames from 'classnames';
import { isNumber, isNumOrStr } from '../util/DataUtils';
import { Global } from '../util/Global';
import { filterProps } from '../util/types';
import { getStringSize } from '../util/DOMUtils';
var BREAKING_SPACES = /[ \f\n\r\t\v\u2028\u2029]+/;

var calculateWordWidths = function calculateWordWidths(props) {
  try {
    var words = [];

    if (!_isNil(props.children)) {
      if (props.breakAll) {
        words = props.children.toString().split('');
      } else {
        words = props.children.toString().split(BREAKING_SPACES);
      }
    }

    var wordsWithComputedWidth = words.map(function (word) {
      return {
        word: word,
        width: getStringSize(word, props.style).width
      };
    });
    var spaceWidth = props.breakAll ? 0 : getStringSize("\xA0", props.style).width;
    return {
      wordsWithComputedWidth: wordsWithComputedWidth,
      spaceWidth: spaceWidth
    };
  } catch (e) {
    return null;
  }
};

var calculateWordsByLines = function calculateWordsByLines(props, initialWordsWithComputedWith, spaceWidth, lineWidth, scaleToFit) {
  var shouldLimitLines = isNumber(props.maxLines);
  var text = props.children;

  var calculate = function calculate() {
    var words = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : [];
    return words.reduce(function (result, _ref) {
      var word = _ref.word,
          width = _ref.width;
      var currentLine = result[result.length - 1];

      if (currentLine && (lineWidth == null || scaleToFit || currentLine.width + width + spaceWidth < lineWidth)) {
        // Word can be added to an existing line
        currentLine.words.push(word);
        currentLine.width += width + spaceWidth;
      } else {
        // Add first word to line or word is too long to scaleToFit on existing line
        var newLine = {
          words: [word],
          width: width
        };
        result.push(newLine);
      }

      return result;
    }, []);
  };

  var originalResult = calculate(initialWordsWithComputedWith);

  var findLongestLine = function findLongestLine(words) {
    return words.reduce(function (a, b) {
      return a.width > b.width ? a : b;
    });
  };

  if (!shouldLimitLines) {
    return originalResult;
  }

  var suffix = '…';

  var checkOverflow = function checkOverflow(index) {
    var tempText = text.slice(0, index);
    var words = calculateWordWidths(_objectSpread(_objectSpread({}, props), {}, {
      children: tempText + suffix
    })).wordsWithComputedWidth;
    var result = calculate(words);
    var doesOverflow = result.length > props.maxLines || findLongestLine(result).width > lineWidth;
    return [doesOverflow, result];
  };

  var start = 0;
  var end = text.length - 1;
  var iterations = 0;
  var trimmedResult;

  while (start <= end && iterations <= text.length - 1) {
    var middle = Math.floor((start + end) / 2);
    var prev = middle - 1;

    var _checkOverflow = checkOverflow(prev),
        _checkOverflow2 = _slicedToArray(_checkOverflow, 2),
        doesPrevOverflow = _checkOverflow2[0],
        result = _checkOverflow2[1];

    var _checkOverflow3 = checkOverflow(middle),
        _checkOverflow4 = _slicedToArray(_checkOverflow3, 1),
        doesMiddleOverflow = _checkOverflow4[0];

    if (!doesPrevOverflow && !doesMiddleOverflow) {
      start = middle + 1;
    }

    if (doesPrevOverflow && doesMiddleOverflow) {
      end = middle - 1;
    }

    if (!doesPrevOverflow && doesMiddleOverflow) {
      trimmedResult = result;
      break;
    }

    iterations++;
  } // Fallback to originalResult (result without trimming) if we cannot find the
  // where to trim.  This should not happen :tm:


  return trimmedResult || originalResult;
};

var getWordsWithoutCalculate = function getWordsWithoutCalculate(children) {
  var words = !_isNil(children) ? children.toString().split(BREAKING_SPACES) : [];
  return [{
    words: words
  }];
};

var getWordsByLines = function getWordsByLines(props, needCalculate) {
  // Only perform calculations if using features that require them (multiline, scaleToFit)
  if ((props.width || props.scaleToFit) && !Global.isSsr) {
    var wordsWithComputedWidth, spaceWidth;

    if (needCalculate) {
      var wordWidths = calculateWordWidths(props);

      if (wordWidths) {
        var wcw = wordWidths.wordsWithComputedWidth,
            sw = wordWidths.spaceWidth;
        wordsWithComputedWidth = wcw;
        spaceWidth = sw;
      } else {
        return getWordsWithoutCalculate(props.children);
      }

      return calculateWordsByLines(props, wordsWithComputedWidth, spaceWidth, props.width, props.scaleToFit);
    }
  }

  return getWordsWithoutCalculate(props.children);
};

export var Text = /*#__PURE__*/function (_Component) {
  _inherits(Text, _Component);

  var _super = _createSuper(Text);

  function Text() {
    var _this;

    _classCallCheck(this, Text);

    for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) {
      args[_key] = arguments[_key];
    }

    _this = _super.call.apply(_super, [this].concat(args));
    _this.state = {};
    return _this;
  }

  _createClass(Text, [{
    key: "render",
    value: function render() {
      var _this$props = this.props,
          dx = _this$props.dx,
          dy = _this$props.dy,
          textAnchor = _this$props.textAnchor,
          verticalAnchor = _this$props.verticalAnchor,
          scaleToFit = _this$props.scaleToFit,
          angle = _this$props.angle,
          lineHeight = _this$props.lineHeight,
          capHeight = _this$props.capHeight,
          className = _this$props.className,
          breakAll = _this$props.breakAll,
          textProps = _objectWithoutProperties(_this$props, ["dx", "dy", "textAnchor", "verticalAnchor", "scaleToFit", "angle", "lineHeight", "capHeight", "className", "breakAll"]);

      var wordsByLines = this.state.wordsByLines;

      if (!isNumOrStr(textProps.x) || !isNumOrStr(textProps.y)) {
        return null;
      }

      var x = textProps.x + (isNumber(dx) ? dx : 0);
      var y = textProps.y + (isNumber(dy) ? dy : 0);
      var startDy;

      switch (verticalAnchor) {
        case 'start':
          startDy = reduceCSSCalc("calc(".concat(capHeight, ")"));
          break;

        case 'middle':
          startDy = reduceCSSCalc("calc(".concat((wordsByLines.length - 1) / 2, " * -").concat(lineHeight, " + (").concat(capHeight, " / 2))"));
          break;

        default:
          startDy = reduceCSSCalc("calc(".concat(wordsByLines.length - 1, " * -").concat(lineHeight, ")"));
          break;
      }

      var transforms = [];

      if (scaleToFit) {
        var lineWidth = wordsByLines[0].width;
        var width = this.props.width;
        transforms.push("scale(".concat((isNumber(width) ? width / lineWidth : 1) / lineWidth, ")"));
      }

      if (angle) {
        transforms.push("rotate(".concat(angle, ", ").concat(x, ", ").concat(y, ")"));
      }

      if (transforms.length) {
        textProps.transform = transforms.join(' ');
      }

      return /*#__PURE__*/React.createElement("text", _extends({}, filterProps(textProps, true), {
        x: x,
        y: y,
        className: classNames('recharts-text', className),
        textAnchor: textAnchor
      }), wordsByLines.map(function (line, index) {
        return (
          /*#__PURE__*/
          // eslint-disable-next-line react/no-array-index-key
          React.createElement("tspan", {
            x: x,
            dy: index === 0 ? startDy : lineHeight,
            key: index
          }, line.words.join(breakAll ? '' : ' '))
        );
      }));
    }
  }], [{
    key: "getDerivedStateFromProps",
    value: function getDerivedStateFromProps(nextProps, prevState) {
      if (nextProps.width !== prevState.prevWidth || nextProps.scaleToFit !== prevState.prevScaleToFit || nextProps.children !== prevState.prevChildren || nextProps.style !== prevState.prevStyle || nextProps.breakAll !== prevState.prevBreakAll) {
        var needCalculate = nextProps.children !== prevState.prevChildren || nextProps.style !== prevState.prevStyle || nextProps.breakAll !== prevState.prevBreakAll;
        return {
          prevWidth: nextProps.width,
          prevScaleToFit: nextProps.scaleToFit,
          prevChildren: nextProps.children,
          prevStyle: nextProps.style,
          wordsByLines: getWordsByLines(nextProps, needCalculate)
        };
      }

      return null;
    }
  }]);

  return Text;
}(Component);
Text.defaultProps = {
  x: 0,
  y: 0,
  lineHeight: '1em',
  capHeight: '0.71em',
  // Magic number from d3
  scaleToFit: false,
  textAnchor: 'start',
  verticalAnchor: 'end' // Maintain compat with existing charts / default SVG behavior

};