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diff --git a/vcl/source/text/TextLayoutCache.cxx b/vcl/source/text/TextLayoutCache.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4; fill-column: 100 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <TextLayoutCache.hxx>
+
+#include <scrptrun.h>
+
+#include <o3tl/hash_combine.hxx>
+#include <o3tl/lru_map.hxx>
+#include <unotools/configmgr.hxx>
+#include <vcl/lazydelete.hxx>
+#include <officecfg/Office/Common.hxx>
+
+namespace vcl::text
+{
+TextLayoutCache::TextLayoutCache(sal_Unicode const* pStr, sal_Int32 const nEnd)
+{
+ vcl::ScriptRun aScriptRun(reinterpret_cast<const UChar*>(pStr), nEnd);
+ while (aScriptRun.next())
+ {
+ runs.emplace_back(aScriptRun.getScriptStart(), aScriptRun.getScriptEnd(),
+ aScriptRun.getScriptCode());
+ }
+}
+
+namespace
+{
+struct TextLayoutCacheCost
+{
+ size_t operator()(const std::shared_ptr<const TextLayoutCache>& item) const
+ {
+ return item->runs.size() * sizeof(item->runs.front());
+ }
+};
+} // namespace
+
+std::shared_ptr<const TextLayoutCache> TextLayoutCache::Create(OUString const& rString)
+{
+ typedef o3tl::lru_map<OUString, std::shared_ptr<const TextLayoutCache>, FirstCharsStringHash,
+ FastStringCompareEqual, TextLayoutCacheCost>
+ Cache;
+ static vcl::DeleteOnDeinit<Cache> cache(
+ !utl::ConfigManager::IsFuzzing()
+ ? officecfg::Office::Common::Cache::Font::TextRunsCacheSize::get()
+ : 100);
+ if (Cache* map = cache.get())
+ {
+ auto it = map->find(rString);
+ if (it != map->end())
+ return it->second;
+ auto ret = std::make_shared<const TextLayoutCache>(rString.getStr(), rString.getLength());
+ map->insert({ rString, ret });
+ return ret;
+ }
+ return std::make_shared<const TextLayoutCache>(rString.getStr(), rString.getLength());
+}
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */