vcl: migrate ImplLayoutRuns to own files

Wrote a set of unit tests for ImplLayoutRuns, and added ImplLayoutRuns
to vcl::text namespace.

Change-Id: Id6ae8882acb8e3d821bb38551e78019cbdcaa662
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/121204
Tested-by: Jenkins
Reviewed-by: Noel Grandin <noel.grandin@collabora.co.uk>

2 files changed, 65 insertions, 33 deletions

diff --git a/vcl/inc/ImplLayoutRuns.hxx b/vcl/inc/ImplLayoutRuns.hxx
new file mode 100644
index 000000000000..30ac642f3779
--- /dev/null
+++ 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: */
diff --git a/vcl/inc/sallayout.hxx b/vcl/inc/sallayout.hxx
index 594202b23239..b31aa202019c 100644
--- a/vcl/inc/sallayout.hxx
+++ b/vcl/inc/sallayout.hxx
@@ -20,25 +20,27 @@
 #ifndef INCLUDED_VCL_INC_SALLAYOUT_HXX
 #define INCLUDED_VCL_INC_SALLAYOUT_HXX
 
-#include <iostream>
-#include <memory>
-#include <vector>
-
-#include <hb.h>
-
-#include <com/sun/star/i18n/XBreakIterator.hpp>
-
 #include <basegfx/polygon/b2dpolypolygon.hxx>
-#include <i18nlangtag/languagetag.hxx>
 #include <tools/gen.hxx>
 #include <tools/degree.hxx>
+#include <i18nlangtag/languagetag.hxx>
+
 #include <vcl/dllapi.h>
-#include <vcl/vclenum.hxx> // for typedef sal_UCS4
 #include <vcl/devicecoordinate.hxx>
+#include <vcl/vclenum.hxx> // for typedef sal_UCS4
 #include <vcl/vcllayout.hxx>
 
+#include "ImplLayoutRuns.hxx"
 #include "impglyphitem.hxx"
 
+#include <com/sun/star/i18n/XBreakIterator.hpp>
+
+#include <hb.h>
+
+#include <iostream>
+#include <memory>
+#include <vector>
+
 #define MAX_FALLBACK 16
 
 
@@ -50,29 +52,6 @@ namespace vcl::text {
     class TextLayoutCache;
 }
 
-// used for managing runs e.g. for BiDi, glyph and script fallback
-class 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;
-};
-
 class MultiSalLayout final : public SalLayout
 {
 public: