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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_SALVD_HXX
+#define INCLUDED_VCL_INC_SALVD_HXX
+
+#include "salgeom.hxx"
+
+class SalGraphics;
+
+/// A non-visible drawable/buffer (e.g. an X11 Pixmap).
+class VCL_PLUGIN_PUBLIC SalVirtualDevice
+ : public SalGeometryProvider
+{
+public:
+ SalVirtualDevice() {}
+ virtual ~SalVirtualDevice() override;
+
+ // SalGeometryProvider
+ virtual bool IsOffScreen() const override { return true; }
+
+ // SalGraphics or NULL, but two Graphics for all SalVirtualDevices
+ // must be returned
+ virtual SalGraphics* AcquireGraphics() = 0;
+ virtual void ReleaseGraphics( SalGraphics* pGraphics ) = 0;
+
+ // Set new size, without saving the old contents
+ virtual bool SetSize( tools::Long nNewDX, tools::Long nNewDY ) = 0;
+
+ // Set new size using a buffer at the given address
+ virtual bool SetSizeUsingBuffer( tools::Long nNewDX, tools::Long nNewDY,
+ sal_uInt8 * /* pBuffer */)
+ {
+ // Only the headless virtual device has an implementation that uses
+ // pBuffer (and bTopDown).
+ return SetSize( nNewDX, nNewDY );
+ }
+};
+
+#endif // INCLUDED_VCL_INC_SALVD_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */