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 #include <sal/config.h>
  21
  22 #include "dx_impltools.hxx"
  23 #include "dx_surfacegraphics.hxx"
  24
  25 using namespace ::com::sun::star;
  26
  27 namespace dxcanvas
  28 {
  29     namespace
  30     {
  31         struct GraphicsDeleter
  32         {
  33             sal::systools::COMReference<surface_type> mpSurface;
  34             HDC                        maHDC;
  35
  36             GraphicsDeleter(const sal::systools::COMReference<surface_type>& rSurface, HDC hdc) :
  37                 mpSurface(rSurface),
  38                 maHDC(hdc)
  39             {}
  40
  41             void operator()( Gdiplus::Graphics* pGraphics )
  42             {
  43                 if(!pGraphics)
  44                     return;
  45
  46                 pGraphics->Flush(Gdiplus::FlushIntentionSync);
  47                 delete pGraphics;
  48
  49                 if(mpSurface.is())
  50                     mpSurface->ReleaseDC( maHDC );
  51             }
  52         };
  53     }
  54
  55     GraphicsSharedPtr createSurfaceGraphics(const sal::systools::COMReference<surface_type>& rSurface )
  56     {
  57         GraphicsSharedPtr  pRet;
  58         HDC aHDC;
  59         if( SUCCEEDED(rSurface->GetDC( &aHDC )) )
  60         {
  61             Gdiplus::Graphics* pGraphics = Gdiplus::Graphics::FromHDC( aHDC );
  62             if(pGraphics)
  63             {
  64                 tools::setupGraphics( *pGraphics );
  65                 pRet.reset(pGraphics,
  66                            GraphicsDeleter(rSurface, aHDC));
  67                 return pRet;
  68             }
  69             else
  70                 rSurface->ReleaseDC( aHDC );
  71         }
  72
  73         throw uno::RuntimeException("could not get the DC to rSurface");
  74     }
  75 }
  76
  77 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */