canvas/source/vcl/backbuffer.hxx

   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 #pragma once
  21
  22 #include <vcl/virdev.hxx>
  23
  24 #include "outdevprovider.hxx"
  25
  26 #include <memory>
  27
  28 namespace vclcanvas
  29 {
  30     /// Background buffer abstraction
  31     class BackBuffer : public OutDevProvider
  32     {
  33     public:
  34         /** Create a backbuffer for given reference device */
  35         BackBuffer( const OutputDevice& rRefDevice );
  36         virtual ~BackBuffer() override;
  37
  38         virtual OutputDevice&       getOutDev() override;
  39         virtual const OutputDevice& getOutDev() const override;
  40
  41         void setSize( const ::Size& rNewSize );
  42
  43     private:
  44         VclPtr< VirtualDevice > maVDev;
  45     };
  46
  47     typedef std::shared_ptr< BackBuffer > BackBufferSharedPtr;
  48 }
  49
  50 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */