From cb79ebc0c9db33634b656a05f0a051b895d89955 Mon Sep 17 00:00:00 2001
From: SmallMain <smallmain@outlook.com>
Date: Thu, 12 Dec 2024 21:01:37 +0800
Subject: [PATCH] =?UTF-8?q?[engine]=20=E6=94=AF=E6=8C=81=E9=A2=84=E7=83=98?=
 =?UTF-8?q?=E7=84=99=E6=96=87=E6=9C=AC=E6=B5=8B=E9=87=8F=E5=80=BC?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 engine/cocos2d/core/utils/text-utils.js | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/engine/cocos2d/core/utils/text-utils.js b/engine/cocos2d/core/utils/text-utils.js
index 8fc23cd5..da98c826 100644
--- a/engine/cocos2d/core/utils/text-utils.js
+++ b/engine/cocos2d/core/utils/text-utils.js
@@ -149,6 +149,8 @@ var textUtils = {
     __CHINESE_REG: /^[\u4E00-\u9FFF\u3400-\u4DFF]+$/,
     __JAPANESE_REG: /[\u3000-\u303F]|[\u3040-\u309F]|[\u30A0-\u30FF]|[\uFF00-\uFFEF]|[\u4E00-\u9FAF]|[\u2605-\u2606]|[\u2190-\u2195]|\u203B/g,
     __KOREAN_REG: /^[\u1100-\u11FF]|[\u3130-\u318F]|[\uA960-\uA97F]|[\uAC00-\uD7AF]|[\uD7B0-\uD7FF]+$/,
+    
+    measureCache: measureCache,
 
     isUnicodeCJK: function(ch) {
         return this.__CHINESE_REG.test(ch) || this.__JAPANESE_REG.test(ch) || this.__KOREAN_REG.test(ch);
@@ -162,7 +164,7 @@ var textUtils = {
 
     safeMeasureText: function (ctx, string, desc) {
         let font = desc || ctx.font;
-        let key = font + "\uD83C\uDFAE" + string;
+        let key = this.computeHash(string, font);
         let cache = measureCache.get(key);
         if (cache !== null) {
             return cache;
@@ -174,6 +176,24 @@ var textUtils = {
 
         return width;
     },
+    
+    computeHash: function (string, desc) {
+        return desc + "\uD83C\uDFAE" + string;
+    },
+    
+    getMeasureCache: function () {
+        const data = {};
+        for (const key in measureCache.datas) {
+            data[key] = measureCache.datas[key].value;
+        }
+        return data;
+    },
+    
+    applyMeasureCache: function (data) {
+        for (const key in data) {
+            measureCache.put(key, data[key]);
+        }
+    },
 
     // in case truncate a character on the Supplementary Multilingual Plane
     // test case: a = '😉🚗'