canvas/source/tools/surfaceproxymanager.cxx

   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
  21 #include <canvas/rendering/isurfaceproxymanager.hxx>
  22 #include <canvas/rendering/isurfaceproxy.hxx>
  23 #include "surfaceproxy.hxx"
  24
  25 namespace canvas
  26 {
  27
  28
  29     // SurfaceProxyManager
  30
  31
  32     class SurfaceProxyManager : public ISurfaceProxyManager
  33     {
  34     public:
  35
  36         SurfaceProxyManager( const IRenderModuleSharedPtr& rRenderModule ) :
  37             mpPageManager( new PageManager(rRenderModule) )
  38         {
  39         }
  40
  41         /** the whole idea is build around the concept that you create
  42             some arbitrary buffer which contains the image data and
  43             tell the texture manager about it.  from there on you can
  44             draw this image using any kind of graphics api you want.
  45             in the technical sense we allocate some space in local
  46             videomemory or AGP memory which will be filled on demand,
  47             which means if there exists any rendering operation that
  48             needs to read from this memory location.  this method
  49             creates a logical hardware surface object which uses the
  50             given color buffer as the image source.  internally this
  51             texture may be distributed to several real hardware
  52             surfaces.
  53         */
  54         virtual ISurfaceProxySharedPtr createSurfaceProxy( const IColorBufferSharedPtr& pBuffer ) const SAL_OVERRIDE
  55         {
  56             // not much to do for now, simply allocate a new surface
  57             // proxy from our internal pool and initialize this thing
  58             // properly. we *don't* create a hardware surface for now.
  59             return SurfaceProxySharedPtr(new SurfaceProxy(pBuffer,mpPageManager));
  60         }
  61
  62     private:
  63         PageManagerSharedPtr mpPageManager;
  64     };
  65
  66
  67     // createSurfaceProxyManager
  68
  69
  70     ISurfaceProxyManagerSharedPtr createSurfaceProxyManager( const IRenderModuleSharedPtr& rRenderModule )
  71     {
  72         return ISurfaceProxyManagerSharedPtr(
  73             new SurfaceProxyManager(
  74                 rRenderModule));
  75     }
  76 }
  77
  78 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */