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       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef _VCLCANVAS_OUTDEVPROVIDER_HXX
      21             : #define _VCLCANVAS_OUTDEVPROVIDER_HXX
      22             : 
      23             : #include <sal/types.h>
      24             : #include <boost/shared_ptr.hpp>
      25             : 
      26             : 
      27             : class OutputDevice;
      28             : 
      29             : namespace vclcanvas
      30             : {
      31             :     /* Definition of OutDevProvider interface */
      32             : 
      33             :     /** Implementers of this interface provide the CanvasHelper
      34             :         with its OutputDevice.
      35             : 
      36             :         This additional level of indirection was necessary, as the
      37             :         OutputDevice is not an interface. There had to be a mechanism
      38             :         to detect the moment when an OutputDevice is rendered to
      39             :         (e.g. for the BitmapBackBuffer).
      40             :      */
      41           0 :     class OutDevProvider
      42             :     {
      43             :     public:
      44           0 :         virtual ~OutDevProvider() {}
      45             : 
      46             :         virtual OutputDevice&       getOutDev() = 0;
      47             :         virtual const OutputDevice& getOutDev() const = 0;
      48             :     };
      49             : 
      50             :     typedef ::boost::shared_ptr< OutDevProvider > OutDevProviderSharedPtr;
      51             : }
      52             : 
      53             : #endif /* _VCLCANVAS_OUTDEVPROVIDER_HXX */
      54             : 
      55             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */