libreoffice/canvas/source/directx/dx_surfacegraphics.cxx

/*************************************************************************
 *
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: dx_surfacegraphics.cxx,v $
 * $Revision: 1.4 $
 *
 * This file is part of OpenOffice.org.
 *
 * OpenOffice.org is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License version 3
 * only, as published by the Free Software Foundation.
 *
 * OpenOffice.org is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License version 3 for more details
 * (a copy is included in the LICENSE file that accompanied this code).
 *
 * You should have received a copy of the GNU Lesser General Public License
 * version 3 along with OpenOffice.org.  If not, see
 * <http://www.openoffice.org/license.html>
 * for a copy of the LGPLv3 License.
 *
 ************************************************************************/

// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_canvas.hxx"

#include "dx_surfacegraphics.hxx"
#include "dx_impltools.hxx"

using namespace ::com::sun::star;

namespace dxcanvas
{
    namespace
    {
        struct GraphicsDeleter
        {
            COMReference<surface_type> mpSurface;
            HDC                        maHDC;

            GraphicsDeleter(const COMReference<surface_type>& rSurface, HDC hdc) :
                mpSurface(rSurface),
                maHDC(hdc)
            {}

            void operator()( Gdiplus::Graphics* pGraphics )
            {
                if(!pGraphics)
                    return;

                pGraphics->Flush(Gdiplus::FlushIntentionSync);
                delete pGraphics;

                if(mpSurface.is())
                    mpSurface->ReleaseDC( maHDC );
            }
        };
    }

    GraphicsSharedPtr createSurfaceGraphics(const COMReference<surface_type>& rSurface )
    {
        Gdiplus::Graphics* pGraphics;
        GraphicsSharedPtr  pRet;
        HDC aHDC;
        if( SUCCEEDED(rSurface->GetDC( &aHDC )) )
        {
            pGraphics = Gdiplus::Graphics::FromHDC( aHDC );
            if(pGraphics)
            {
                tools::setupGraphics( *pGraphics );
                pRet.reset(pGraphics,
                           GraphicsDeleter(rSurface, aHDC));
                return pRet;
            }
            else
                rSurface->ReleaseDC( aHDC );
        }

        throw uno::RuntimeException();
    }
}