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diff --git a/canvas/source/vcl/impltools.hxx b/canvas/source/vcl/impltools.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_VCL_IMPLTOOLS_HXX
+#define INCLUDED_CANVAS_SOURCE_VCL_IMPLTOOLS_HXX
+
+#include <osl/mutex.hxx>
+
+#include <vcl/svapp.hxx>
+#include <vcl/outdev.hxx>
+
+#include <basegfx/polygon/b2dpolypolygon.hxx>
+
+#include <com/sun/star/uno/Reference.hxx>
+
+#include "outdevprovider.hxx"
+
+
+class OutputDevice;
+class Point;
+class Size;
+
+namespace basegfx
+{
+    namespace matrix
+    {
+        class B2DHomMatrix;
+    }
+}
+
+namespace com::sun::star::awt
+{
+    struct Point;
+    struct Size;
+    struct Rectangle;
+}
+
+namespace com::sun::star::drawing
+{
+    struct HomogenMatrix3;
+}
+
+namespace com::sun::star::geometry
+{
+    struct RealPoint2D;
+    struct RealSize2D;
+    struct RealRectangle2D;
+}
+
+namespace com::sun::star::rendering
+{
+    struct RenderState;
+    struct ViewState;
+    class  XBitmap;
+}
+
+
+namespace vclcanvas
+{
+    namespace tools
+    {
+        ::BitmapEx
+        bitmapExFromXBitmap( const css::uno::Reference<
+                             css::rendering::XBitmap >& );
+
+        /** Setup VCL font and output position
+
+            @returns false, if no text output should happen
+         */
+        bool setupFontTransform( ::Point&                              o_rPoint,
+                                 vcl::Font&                            io_rVCLFont,
+                                 const css::rendering::ViewState&      viewState,
+                                 const css::rendering::RenderState&    renderState,
+                                 ::OutputDevice const &                rOutDev );
+
+        /** Predicate, to determine whether polygon is actually an axis-aligned rectangle
+
+            @return true, if the polygon is a rectangle.
+         */
+        bool isRectangle( const ::tools::PolyPolygon& rPolyPoly );
+
+
+        // Little helper to encapsulate locking into policy class
+        class LocalGuard
+        {
+        public:
+            LocalGuard() :
+                aSolarGuard()
+            {
+            }
+
+            /// To be compatible with CanvasBase mutex concept
+            explicit LocalGuard( const ::osl::Mutex& ) :
+                aSolarGuard()
+            {
+            }
+
+        private:
+            SolarMutexGuard aSolarGuard;
+        };
+
+        class OutDevStateKeeper
+        {
+        public:
+            explicit OutDevStateKeeper( OutputDevice& rOutDev ) :
+                mpOutDev( &rOutDev ),
+                mbMappingWasEnabled( mpOutDev->IsMapModeEnabled() ),
+                mnAntiAliasing( mpOutDev->GetAntialiasing() )
+            {
+                init();
+            }
+
+            explicit OutDevStateKeeper( const OutDevProviderSharedPtr& rOutDev ) :
+                mpOutDev( rOutDev ? &(rOutDev->getOutDev()) : nullptr ),
+                mbMappingWasEnabled( mpOutDev && mpOutDev->IsMapModeEnabled() ),
+                mnAntiAliasing( mpOutDev ? mpOutDev->GetAntialiasing() : AntialiasingFlags::NONE )
+            {
+                init();
+            }
+
+            ~OutDevStateKeeper()
+            {
+                if( mpOutDev )
+                {
+                    mpOutDev->EnableMapMode( mbMappingWasEnabled );
+                    mpOutDev->SetAntialiasing( mnAntiAliasing );
+
+                    mpOutDev->Pop();
+                }
+            }
+
+        private:
+            void init()
+            {
+                if( mpOutDev )
+                {
+                    mpOutDev->Push();
+                    mpOutDev->EnableMapMode(false);
+                    mpOutDev->SetAntialiasing( AntialiasingFlags::EnableB2dDraw );
+                }
+            }
+
+            VclPtr<OutputDevice>    mpOutDev;
+            const bool              mbMappingWasEnabled;
+            const AntialiasingFlags mnAntiAliasing;
+        };
+
+        ::Point mapRealPoint2D( const css::geometry::RealPoint2D&  rPoint,
+                                const css::rendering::ViewState&   rViewState,
+                                const css::rendering::RenderState& rRenderState );
+
+        ::tools::PolyPolygon mapPolyPolygon( const ::basegfx::B2DPolyPolygon&                          rPoly,
+                                      const css::rendering::ViewState&     rViewState,
+                                      const css::rendering::RenderState&   rRenderState );
+
+        ::BitmapEx transformBitmap( const BitmapEx&                                     rBitmap,
+                                    const ::basegfx::B2DHomMatrix&                      rTransform );
+
+    }
+}
+
+#endif // INCLUDED_CANVAS_SOURCE_VCL_IMPLTOOLS_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */