recharts
Version:
React charts
77 lines • 3.38 kB
JavaScript
function ownKeys(e, r) { var t = Object.keys(e); if (Object.getOwnPropertySymbols) { var o = Object.getOwnPropertySymbols(e); r && (o = o.filter(function (r) { return Object.getOwnPropertyDescriptor(e, r).enumerable; })), t.push.apply(t, o); } return t; }
function _objectSpread(e) { for (var r = 1; r < arguments.length; r++) { var t = null != arguments[r] ? arguments[r] : {}; r % 2 ? ownKeys(Object(t), !0).forEach(function (r) { _defineProperty(e, r, t[r]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(e, Object.getOwnPropertyDescriptors(t)) : ownKeys(Object(t)).forEach(function (r) { Object.defineProperty(e, r, Object.getOwnPropertyDescriptor(t, r)); }); } return e; }
function _defineProperty(e, r, t) { return (r = _toPropertyKey(r)) in e ? Object.defineProperty(e, r, { value: t, enumerable: !0, configurable: !0, writable: !0 }) : e[r] = t, e; }
function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == typeof i ? i : i + ""; }
function _toPrimitive(t, r) { if ("object" != typeof t || !t) return t; var e = t[Symbol.toPrimitive]; if (void 0 !== e) { var i = e.call(t, r || "default"); if ("object" != typeof i) return i; throw new TypeError("@@toPrimitive must return a primitive value."); } return ("string" === r ? String : Number)(t); }
import { Global } from './Global';
var stringCache = {
widthCache: {},
cacheCount: 0
};
var MAX_CACHE_NUM = 2000;
var SPAN_STYLE = {
position: 'absolute',
top: '-20000px',
left: 0,
padding: 0,
margin: 0,
border: 'none',
whiteSpace: 'pre'
};
var MEASUREMENT_SPAN_ID = 'recharts_measurement_span';
function removeInvalidKeys(obj) {
var copyObj = _objectSpread({}, obj);
Object.keys(copyObj).forEach(key => {
if (!copyObj[key]) {
delete copyObj[key];
}
});
return copyObj;
}
export var getStringSize = function getStringSize(text) {
var style = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
if (text === undefined || text === null || Global.isSsr) {
return {
width: 0,
height: 0
};
}
var copyStyle = removeInvalidKeys(style);
var cacheKey = JSON.stringify({
text,
copyStyle
});
if (stringCache.widthCache[cacheKey]) {
return stringCache.widthCache[cacheKey];
}
try {
var measurementSpan = document.getElementById(MEASUREMENT_SPAN_ID);
if (!measurementSpan) {
measurementSpan = document.createElement('span');
measurementSpan.setAttribute('id', MEASUREMENT_SPAN_ID);
measurementSpan.setAttribute('aria-hidden', 'true');
document.body.appendChild(measurementSpan);
}
// Need to use CSS Object Model (CSSOM) to be able to comply with Content Security Policy (CSP)
// https://en.wikipedia.org/wiki/Content_Security_Policy
var measurementSpanStyle = _objectSpread(_objectSpread({}, SPAN_STYLE), copyStyle);
Object.assign(measurementSpan.style, measurementSpanStyle);
measurementSpan.textContent = "".concat(text);
var rect = measurementSpan.getBoundingClientRect();
var result = {
width: rect.width,
height: rect.height
};
stringCache.widthCache[cacheKey] = result;
if (++stringCache.cacheCount > MAX_CACHE_NUM) {
stringCache.cacheCount = 0;
stringCache.widthCache = {};
}
return result;
} catch (_unused) {
return {
width: 0,
height: 0
};
}
};