From 0d14d1173fc86bce6f3c8f51235c248f5920b0a0 Mon Sep 17 00:00:00 2001
From: PrinsFrank <25006490+PrinsFrank@users.noreply.github.com>
Date: Sat, 3 Oct 2026 16:13:44 +0200
Subject: [PATCH] Cache charWidth for identical textState and
 transformationMatrix

---
 src/Document/Object/Decorator/Font.php | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/src/Document/Object/Decorator/Font.php b/src/Document/Object/Decorator/Font.php
index 41484bc6..3a45f62c 100644
--- a/src/Document/Object/Decorator/Font.php
+++ b/src/Document/Object/Decorator/Font.php
@@ -152,8 +152,13 @@ public function getWidthForChar(int $characterCode, TextState $textState, Transf
     /** @param list<int> $chars */
     public function getWidthForChars(array $chars, TextState $textState, TransformationMatrix $transformationMatrix): float {
         $totalCharacterWidth = 0;
+        $charWidthCache = [];
         foreach ($chars as $char) {
-            $totalCharacterWidth += $this->getWidthForChar($char, $textState, $transformationMatrix);
+            if (isset($charWidthCache[$char]) === false) {
+                $charWidthCache[$char] = $this->getWidthForChar($char, $textState, $transformationMatrix);
+            }
+
+            $totalCharacterWidth += $charWidthCache[$char];
         }
 
         return $totalCharacterWidth;