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diff --git a/canvas/source/tools/pagemanager.hxx b/canvas/source/tools/pagemanager.hxx
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+++ b/canvas/source/tools/pagemanager.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_CANVAS_SOURCE_TOOLS_PAGEMANAGER_HXX
+#define INCLUDED_CANVAS_SOURCE_TOOLS_PAGEMANAGER_HXX
+
+#include <basegfx/vector/b2isize.hxx>
+#include <rendering/irendermodule.hxx>
+
+#include "page.hxx"
+
+namespace canvas
+{
+    // PageManager
+    class PageManager
+    {
+    public:
+        explicit PageManager(const std::shared_ptr<canvas::IRenderModule>& rRenderModule)
+            : mpRenderModule(rRenderModule)
+        {
+        }
+
+        // returns the maximum size of a hardware
+        // accelerated page, e.g. OpenGL texture.
+        ::basegfx::B2ISize getPageSize() const;
+
+        const std::shared_ptr<canvas::IRenderModule>& getRenderModule() const { return mpRenderModule; }
+
+        FragmentSharedPtr allocateSpace( const ::basegfx::B2ISize& rSize );
+        void              free( const FragmentSharedPtr& pFragment );
+
+        void              nakedFragment( const FragmentSharedPtr& pFragment );
+
+        void              validatePages();
+
+    private:
+        // the pagemanager needs access to the rendermodule
+        // since we query for system resources from it.
+        std::shared_ptr<canvas::IRenderModule> mpRenderModule;
+
+        // here we collect all fragments that will be created
+        // since we need them for relocation purposes.
+        typedef std::vector<FragmentSharedPtr> FragmentContainer_t;
+        FragmentContainer_t maFragments;
+
+        // this is the container holding all created pages,
+        // behind the scenes these are real hardware surfaces.
+        std::vector<PageSharedPtr> maPages;
+
+        bool relocate( const FragmentSharedPtr& pFragment );
+    };
+
+
+    // PageManagerSharedPtr
+
+
+    typedef std::shared_ptr< PageManager > PageManagerSharedPtr;
+}
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */