1 files changed, 53 insertions, 0 deletions
diff --git a/vcl/inc/ImplLayoutRuns.hxx b/vcl/inc/ImplLayoutRuns.hxx
new file mode 100644
index 000000000..30ac642f3
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+++ b/vcl/inc/ImplLayoutRuns.hxx
@@ -0,0 +1,53 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * 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 <vcl/dllapi.h>
+
+#include <vector>
+
+// used for managing runs e.g. for BiDi, glyph and script fallback
+class VCL_DLLPUBLIC ImplLayoutRuns
+{
+private:
+    int mnRunIndex;
+    std::vector<int> maRuns;
+
+public:
+    ImplLayoutRuns()
+    {
+        mnRunIndex = 0;
+        maRuns.reserve(8);
+    }
+
+    void Clear() { maRuns.clear(); }
+    void AddPos(int nCharPos, bool bRTL);
+    void AddRun(int nMinRunPos, int nEndRunPos, bool bRTL);
+
+    bool IsEmpty() const { return maRuns.empty(); }
+    void ResetPos() { mnRunIndex = 0; }
+    void NextRun() { mnRunIndex += 2; }
+    bool GetRun(int* nMinRunPos, int* nEndRunPos, bool* bRTL) const;
+    bool GetNextPos(int* nCharPos, bool* bRTL);
+    bool PosIsInRun(int nCharPos) const;
+    bool PosIsInAnyRun(int nCharPos) const;
+};
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */