office-gobmx/embeddedobj/source/msole/graphconvert.cxx

/*************************************************************************
 *
 *  $RCSfile: graphconvert.cxx,v $
 *
 *  $Revision: 1.4 $
 *
 *  last change: $Author: mav $ $Date: 2003-12-09 15:09:33 $
 *
 *  The Contents of this file are made available subject to the terms of
 *  either of the following licenses
 *
 *         - GNU Lesser General Public License Version 2.1
 *         - Sun Industry Standards Source License Version 1.1
 *
 *  Sun Microsystems Inc., October, 2000
 *
 *  GNU Lesser General Public License Version 2.1
 *  =============================================
 *  Copyright 2000 by Sun Microsystems, Inc.
 *  901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License version 2.1, as published by the Free Software Foundation.
 *
 *  This library 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 for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *  MA  02111-1307  USA
 *
 *
 *  Sun Industry Standards Source License Version 1.1
 *  =================================================
 *  The contents of this file are subject to the Sun Industry Standards
 *  Source License Version 1.1 (the "License"); You may not use this file
 *  except in compliance with the License. You may obtain a copy of the
 *  License at http://www.openoffice.org/license.html.
 *
 *  Software provided under this License is provided on an "AS IS" basis,
 *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
 *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
 *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
 *  See the License for the specific provisions governing your rights and
 *  obligations concerning the Software.
 *
 *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
 *
 *  Copyright: 2000 by Sun Microsystems, Inc.
 *
 *  All Rights Reserved.
 *
 *  Contributor(s): _______________________________________
 *
 *
 ************************************************************************/

#ifndef _COM_SUN_STAR_UNO_ANY_HXX_
#include <com/sun/star/uno/Any.hxx>
#endif
#ifndef _COM_SUN_STAR_UNO_REFERENCE_HXX_
#include <com/sun/star/uno/Reference.hxx>
#endif
#ifndef _COM_SUN_STAR_UNO_SEQUENCE_HXX_
#include <com/sun/star/uno/Sequence.hxx>
#endif

// TODO: when conversion service is ready this headers should disappear
#include <svtools/filter.hxx>
#include <vcl/graph.hxx>

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


sal_Bool ConvertBufferForFlavor( void* pBuf,
                                 sal_uInt32 nBufSize,
                                 const datatransfer::DataFlavor& aFlavor,
                                 uno::Any& aResult )
{
    if ( pBuf )
    {
        SvMemoryStream aBufStream( pBuf, nBufSize, STREAM_READ );
        aBufStream.ObjectOwnsMemory( sal_False );

        Graphic aGraph;
        GraphicFilter aGrFilter( sal_True );
        if ( aGrFilter.ImportGraphic( aGraph, String(), aBufStream ) == ERRCODE_NONE )
        {
            sal_uInt16 nFormat = GRFILTER_FORMAT_DONTKNOW;

            // TODO: Extend format list
             if ( aFlavor.MimeType.matchAsciiL( "application/x-openoffice;windows_formatname=\"Image WMF\"", 57 ) )
                nFormat = aGrFilter.GetExportFormatNumberForShortName( ::rtl::OUString::createFromAscii( "WMF" ) );
              else if ( aFlavor.MimeType.matchAsciiL( "application/x-openoffice;windows_formatname=\"Image EMF\"", 57 ) )
                nFormat = aGrFilter.GetExportFormatNumberForShortName( ::rtl::OUString::createFromAscii( "EMF" ) );
              else if ( aFlavor.MimeType.matchAsciiL( "application/x-openoffice;windows_formatname=\"Bitmap\"", 54 ) )
                nFormat = aGrFilter.GetExportFormatNumberForShortName( ::rtl::OUString::createFromAscii( "BMP" ) );
            else if ( aFlavor.MimeType.matchAsciiL( "image/png", 9 ) )
                nFormat = aGrFilter.GetExportFormatNumberForShortName( ::rtl::OUString::createFromAscii( "PNG" ) );

            if ( nFormat != GRFILTER_FORMAT_DONTKNOW )
            {
                SvMemoryStream aNewStream( 65535, 65535 );
                if ( aGrFilter.ExportGraphic( aGraph, String(), aNewStream, nFormat ) == ERRCODE_NONE )
                {
                    /*
                    {
                        aNewStream.Seek( 0 );
                        SvFileStream aFile( String::CreateFromAscii( "file:///d:/test.png" ), STREAM_STD_READWRITE);
                        aFile.SetStreamSize( 0 );
                        aNewStream >> aFile;
                    }
                    */

                    aResult <<= uno::Sequence< sal_Int8 >(
                                                    reinterpret_cast< const sal_Int8* >( aNewStream.GetData() ),
                                                    aNewStream.Seek( STREAM_SEEK_TO_END ) );
                    return sal_True;
                }
            }
        }
    }

    return sal_False;
}