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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_BACKBUFFER_HXX_
      21                 :            : #define _VCLCANVAS_BACKBUFFER_HXX_
      22                 :            : 
      23                 :            : #include <vcl/virdev.hxx>
      24                 :            : 
      25                 :            : #include <canvas/vclwrapper.hxx>
      26                 :            : #include "outdevprovider.hxx"
      27                 :            : 
      28                 :            : #include <boost/shared_ptr.hpp>
      29                 :            : 
      30                 :            : 
      31                 :            : namespace vclcanvas
      32                 :            : {
      33                 :            :     /// Background buffer abstraction
      34                 :          0 :     class BackBuffer : public OutDevProvider
      35                 :            :     {
      36                 :            :     public:
      37                 :            :         /** Create a backbuffer for given reference device
      38                 :            : 
      39                 :            :             @param bMonochromeBuffer
      40                 :            :             When false, default depth of reference device is
      41                 :            :             chosen. When true, the buffer will be monochrome, i.e. one
      42                 :            :             bit deep.
      43                 :            :          */
      44                 :            :         BackBuffer( const OutputDevice& rRefDevice,
      45                 :            :                     bool                bMonochromeBuffer=false );
      46                 :            : 
      47                 :            :         virtual OutputDevice&       getOutDev();
      48                 :            :         virtual const OutputDevice& getOutDev() const;
      49                 :            : 
      50                 :            :         void setSize( const ::Size& rNewSize );
      51                 :            : 
      52                 :            :     private:
      53                 :            :         ::canvas::vcltools::VCLObject<VirtualDevice>    maVDev;
      54                 :            :     };
      55                 :            : 
      56                 :            :     typedef ::boost::shared_ptr< BackBuffer > BackBufferSharedPtr;
      57                 :            : }
      58                 :            : 
      59                 :            : #endif /* #ifndef _VCLCANVAS_BACKBUFFER_HXX_ */
      60                 :            : 
      61                 :            : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */