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diff --git a/canvas/source/directx/dx_devicehelper.hxx b/canvas/source/directx/dx_devicehelper.hxx
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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef _DXCANVAS_DEVICEHELPER_HXX
+#define _DXCANVAS_DEVICEHELPER_HXX
+
+#include <com/sun/star/awt/Rectangle.hpp>
+#include <com/sun/star/rendering/XGraphicDevice.hpp>
+#include <com/sun/star/rendering/XBufferController.hpp>
+
+#include "dx_rendermodule.hxx"
+#include "dx_bitmap.hxx"
+
+#include <canvas/rendering/isurfaceproxymanager.hxx>
+
+#include <boost/utility.hpp>
+
+
+/* Definition of DeviceHelper class */
+
+namespace dxcanvas
+{
+    class DeviceHelper : private ::boost::noncopyable
+    {
+    public:
+        DeviceHelper();
+
+        /** Init the device helper
+
+            @param hdc
+            private or class dc of the output device. is only stored,
+            not release
+
+            @param rDevice
+            Ref back to owning UNO device
+         */
+        void init( HDC                                        hdc,
+                   com::sun::star::rendering::XGraphicDevice& rDevice );
+
+        /// Dispose all internal references
+        void disposing();
+
+        // XWindowGraphicDevice
+        ::com::sun::star::geometry::RealSize2D getPhysicalResolution();
+        ::com::sun::star::geometry::RealSize2D getPhysicalSize();
+        ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XLinePolyPolygon2D > createCompatibleLinePolyPolygon(
+            const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XGraphicDevice >&                               rDevice,
+            const ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Sequence< ::com::sun::star::geometry::RealPoint2D > >& points );
+        ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBezierPolyPolygon2D > createCompatibleBezierPolyPolygon(
+            const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XGraphicDevice >&                                       rDevice,
+            const ::com::sun::star::uno::Sequence< ::com::sun::star::uno::Sequence< ::com::sun::star::geometry::RealBezierSegment2D > >& points );
+        ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBitmap > createCompatibleBitmap(
+            const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XGraphicDevice >&  rDevice,
+            const ::com::sun::star::geometry::IntegerSize2D&                                        size );
+        ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XVolatileBitmap > createVolatileBitmap(
+            const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XGraphicDevice >&  rDevice,
+            const ::com::sun::star::geometry::IntegerSize2D&                                        size );
+        ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XBitmap > createCompatibleAlphaBitmap(
+            const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XGraphicDevice >&  rDevice,
+            const ::com::sun::star::geometry::IntegerSize2D&                                        size );
+        ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XVolatileBitmap > createVolatileAlphaBitmap(
+            const ::com::sun::star::uno::Reference< ::com::sun::star::rendering::XGraphicDevice >&  rDevice,
+            const ::com::sun::star::geometry::IntegerSize2D&                                        size );
+
+        sal_Bool hasFullScreenMode();
+        sal_Bool enterFullScreenMode( sal_Bool bEnter );
+
+        ::com::sun::star::uno::Any isAccelerated() const;
+        ::com::sun::star::uno::Any getDeviceHandle() const;
+        ::com::sun::star::uno::Any getSurfaceHandle() const;
+        ::com::sun::star::uno::Reference<
+            ::com::sun::star::rendering::XColorSpace > getColorSpace() const;
+
+        /** called when DumpScreenContent property is enabled on
+            XGraphicDevice, and writes out bitmaps of current screen.
+         */
+        void dumpScreenContent() const {}
+
+    protected:
+        HDC getHDC() const { return mnHDC; }
+        com::sun::star::rendering::XGraphicDevice* getDevice() const { return mpDevice; }
+
+    private:
+        /** Phyical output device
+
+            Deliberately not a refcounted reference, because of
+            potential circular references for canvas. Needed to
+            create bitmaps
+         */
+        com::sun::star::rendering::XGraphicDevice* mpDevice;
+        HDC                                        mnHDC;
+    };
+
+    typedef ::rtl::Reference< com::sun::star::rendering::XGraphicDevice > DeviceRef;
+}
+
+#endif /* _DXCANVAS_DEVICEHELPER_HXX */