2 files changed, 66 insertions, 1 deletions
diff --git a/vcl/inc/TextLayoutCache.hxx b/vcl/inc/TextLayoutCache.hxx
new file mode 100644
index 000000000000..0118ba32fed8
--- /dev/null
+++ b/vcl/inc/TextLayoutCache.hxx
@@ -0,0 +1,63 @@
+/* -*- 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 .
+ */
+
+#pragma once
+
+#include <sal/types.h>
+
+#include <vcl/dllapi.h>
+
+#include "scrptrun.h"
+
+#include <hb-icu.h>
+
+#include <vector>
+
+namespace vcl
+{
+struct Run
+{
+    int32_t nStart;
+    int32_t nEnd;
+    UScriptCode nCode;
+    Run(int32_t nStart_, int32_t nEnd_, UScriptCode nCode_)
+        : nStart(nStart_)
+        , nEnd(nEnd_)
+        , nCode(nCode_)
+    {
+    }
+};
+
+class TextLayoutCache
+{
+public:
+    std::vector<vcl::Run> runs;
+    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());
+        }
+    }
+};
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab cinoptions=b1,g0,N-s cinkeys+=0=break: */
diff --git a/vcl/inc/scrptrun.h b/vcl/inc/scrptrun.h
index 0d64109b6fe9..d2dee3e155a7 100644
--- a/vcl/inc/scrptrun.h
+++ b/vcl/inc/scrptrun.h
@@ -39,6 +39,8 @@
 
 #include <sal/config.h>
 
+#include <vcl/dllapi.h>
+
 #include <unicode/uobject.h>
 #include <unicode/uscript.h>
 #include <vector>
@@ -56,7 +58,7 @@ struct ParenStackEntry
     }
 };
 
-class ScriptRun final : public icu::UObject
+class VCL_DLLPUBLIC ScriptRun final : public icu::UObject
 {
 public:
     ScriptRun(const UChar chars[], int32_t length);