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diff --git a/vcl/inc/PhysicalFontCollection.hxx b/vcl/inc/PhysicalFontCollection.hxx
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+++ b/vcl/inc/PhysicalFontCollection.hxx
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+/* -*- 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 .
+ */
+
+#ifndef INCLUDED_VCL_INC_PHYSICALFONTCOLLECTION_HXX
+#define INCLUDED_VCL_INC_PHYSICALFONTCOLLECTION_HXX
+
+#include <vcl/dllapi.h>
+
+#include "fontinstance.hxx"
+#include "PhysicalFontFamily.hxx"
+#include <array>
+
+#define MAX_GLYPHFALLBACK 16
+
+class ImplDeviceFontSizeList;
+class ImplGlyphFallbackFontSubstitution;
+class ImplPreMatchFontSubstitution;
+
+
+// TODO: merge with ImplFontCache
+// TODO: rename to LogicalFontManager
+
+class VCL_PLUGIN_PUBLIC PhysicalFontCollection final
+{
+public:
+    explicit                PhysicalFontCollection();
+                            ~PhysicalFontCollection();
+
+    // fill the list with device font faces
+    void                    Add( PhysicalFontFace* );
+    void                    Clear();
+    int                     Count() const { return maPhysicalFontFamilies.size(); }
+
+    // find the device font family
+    PhysicalFontFamily*     FindFontFamily( const OUString& rFontName ) const;
+    PhysicalFontFamily*     FindOrCreateFontFamily( const OUString &rFamilyName );
+    PhysicalFontFamily*     FindFontFamily( FontSelectPattern& ) const;
+    PhysicalFontFamily*     FindFontFamilyByTokenNames(const OUString& rTokenStr) const;
+    PhysicalFontFamily*     FindFontFamilyByAttributes(ImplFontAttrs nSearchType, FontWeight, FontWidth,
+                                             FontItalic, const OUString& rSearchFamily) const;
+
+    // suggest fonts for glyph fallback
+    PhysicalFontFamily*     GetGlyphFallbackFont( FontSelectPattern&,
+                                                  LogicalFontInstance* pLogicalFont,
+                                                  OUString& rMissingCodes, int nFallbackLevel ) const;
+
+    // prepare platform specific font substitutions
+    void                    SetPreMatchHook( ImplPreMatchFontSubstitution* );
+    void                    SetFallbackHook( ImplGlyphFallbackFontSubstitution* );
+
+    // misc utilities
+    std::shared_ptr<PhysicalFontCollection> Clone() const;
+    std::unique_ptr<ImplDeviceFontList> GetDeviceFontList() const;
+    std::unique_ptr<ImplDeviceFontSizeList> GetDeviceFontSizeList( const OUString& rFontName ) const;
+
+private:
+    mutable bool            mbMatchData;    // true if matching attributes are initialized
+
+    typedef std::unordered_map<OUString, std::unique_ptr<PhysicalFontFamily>> PhysicalFontFamilies;
+    PhysicalFontFamilies    maPhysicalFontFamilies;
+
+    ImplPreMatchFontSubstitution* mpPreMatchHook;       // device specific prematch substitution
+    ImplGlyphFallbackFontSubstitution* mpFallbackHook;  // device specific glyph fallback substitution
+
+    mutable std::unique_ptr<std::array<PhysicalFontFamily*,MAX_GLYPHFALLBACK>>  mpFallbackList;
+    mutable int             mnFallbackCount;
+
+    void                    ImplInitMatchData() const;
+    void                    ImplInitGenericGlyphFallback() const;
+
+    PhysicalFontFamily*     ImplFindFontFamilyBySearchName( const OUString& ) const;
+    PhysicalFontFamily*     ImplFindFontFamilyBySubstFontAttr( const utl::FontNameAttr& ) const;
+
+    PhysicalFontFamily*     ImplFindFontFamilyOfDefaultFont() const;
+
+};
+
+#endif // INCLUDED_VCL_INC_PHYSICALFONTCOLLECTION_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */