127 lines
4.8 KiB
JavaScript
127 lines
4.8 KiB
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; }
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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; }
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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; }
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function _toPropertyKey(t) { var i = _toPrimitive(t, "string"); return "symbol" == typeof i ? i : i + ""; }
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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); }
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import { Global } from './Global';
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import { LRUCache } from './LRUCache';
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var defaultConfig = {
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cacheSize: 2000,
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enableCache: true
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};
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var currentConfig = _objectSpread({}, defaultConfig);
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var stringCache = new LRUCache(currentConfig.cacheSize);
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var SPAN_STYLE = {
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position: 'absolute',
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top: '-20000px',
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left: 0,
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padding: 0,
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margin: 0,
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border: 'none',
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whiteSpace: 'pre'
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};
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var MEASUREMENT_SPAN_ID = 'recharts_measurement_span';
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function createCacheKey(text, style) {
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// Simple string concatenation for better performance than JSON.stringify
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var fontSize = style.fontSize || '';
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var fontFamily = style.fontFamily || '';
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var fontWeight = style.fontWeight || '';
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var fontStyle = style.fontStyle || '';
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var letterSpacing = style.letterSpacing || '';
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var textTransform = style.textTransform || '';
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return "".concat(text, "|").concat(fontSize, "|").concat(fontFamily, "|").concat(fontWeight, "|").concat(fontStyle, "|").concat(letterSpacing, "|").concat(textTransform);
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}
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/**
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* Measure text using DOM (accurate but slower)
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* @param text - The text to measure
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* @param style - CSS style properties to apply
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* @returns The size of the text
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*/
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var measureTextWithDOM = (text, style) => {
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try {
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var measurementSpan = document.getElementById(MEASUREMENT_SPAN_ID);
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if (!measurementSpan) {
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measurementSpan = document.createElement('span');
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measurementSpan.setAttribute('id', MEASUREMENT_SPAN_ID);
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measurementSpan.setAttribute('aria-hidden', 'true');
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document.body.appendChild(measurementSpan);
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}
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// Apply styles directly without unnecessary object creation
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Object.assign(measurementSpan.style, SPAN_STYLE, style);
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measurementSpan.textContent = "".concat(text);
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var rect = measurementSpan.getBoundingClientRect();
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return {
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width: rect.width,
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height: rect.height
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};
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} catch (_unused) {
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return {
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width: 0,
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height: 0
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};
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}
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};
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export var getStringSize = function getStringSize(text) {
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var style = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
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if (text === undefined || text === null || Global.isSsr) {
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return {
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width: 0,
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height: 0
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};
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}
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// If caching is disabled, measure directly
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if (!currentConfig.enableCache) {
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return measureTextWithDOM(text, style);
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}
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var cacheKey = createCacheKey(text, style);
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var cachedResult = stringCache.get(cacheKey);
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if (cachedResult) {
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return cachedResult;
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}
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// Measure using DOM
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var result = measureTextWithDOM(text, style);
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// Store in LRU cache
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stringCache.set(cacheKey, result);
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return result;
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};
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/**
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* Configure text measurement behavior
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* @param config - Partial configuration to apply
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* @returns void
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*/
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export var configureTextMeasurement = config => {
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var newConfig = _objectSpread(_objectSpread({}, currentConfig), config);
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if (newConfig.cacheSize !== currentConfig.cacheSize) {
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stringCache = new LRUCache(newConfig.cacheSize);
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}
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currentConfig = newConfig;
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};
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/**
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* Get current text measurement configuration
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* @returns Current configuration
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*/
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export var getTextMeasurementConfig = () => _objectSpread({}, currentConfig);
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/**
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* Clear the string size cache. Useful for testing or memory management.
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* @returns void
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*/
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export var clearStringCache = () => {
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stringCache.clear();
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};
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/**
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* Get cache statistics for debugging purposes.
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* @returns Cache statistics including size and max size
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*/
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export var getStringCacheStats = () => ({
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size: stringCache.size(),
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maxSize: currentConfig.cacheSize
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}); |