canvas/source/directx/dx_surfacegraphics.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 "dx_surfacegraphics.hxx"
  22 #include "dx_impltools.hxx"
  23
  24 using namespace ::com::sun::star;
  25
  26 namespace dxcanvas
  27 {
  28     namespace
  29     {
  30         struct GraphicsDeleter
  31         {
  32             COMReference<surface_type> mpSurface;
  33             HDC                        maHDC;
  34
  35             GraphicsDeleter(const COMReference<surface_type>& rSurface, HDC hdc) :
  36                 mpSurface(rSurface),
  37                 maHDC(hdc)
  38             {}
  39
  40             void operator()( Gdiplus::Graphics* pGraphics )
  41             {
  42                 if(!pGraphics)
  43                     return;
  44
  45                 pGraphics->Flush(Gdiplus::FlushIntentionSync);
  46                 delete pGraphics;
  47
  48                 if(mpSurface.is())
  49                     mpSurface->ReleaseDC( maHDC );
  50             }
  51         };
  52     }
  53
  54     GraphicsSharedPtr createSurfaceGraphics(const COMReference<surface_type>& rSurface )
  55     {
  56         GraphicsSharedPtr  pRet;
  57         HDC aHDC;
  58         if( SUCCEEDED(rSurface->GetDC( &aHDC )) )
  59         {
  60             Gdiplus::Graphics* pGraphics = Gdiplus::Graphics::FromHDC( aHDC );
  61             if(pGraphics)
  62             {
  63                 tools::setupGraphics( *pGraphics );
  64                 pRet.reset(pGraphics,
  65                            GraphicsDeleter(rSurface, aHDC));
  66                 return pRet;
  67             }
  68             else
  69                 rSurface->ReleaseDC( aHDC );
  70         }
  71
  72         throw uno::RuntimeException();
  73     }
  74 }
  75
  76 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */