AOO410/main/vcl/source/gdi/cvtgrf.cxx

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 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/



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

#include <vcl/metaact.hxx>
#include <vcl/cvtgrf.hxx>

#include <salinst.hxx>
#include <svdata.hxx>

// --------------
// - Callback	-
// --------------

// --------------------
// - GraphicConverter -
// --------------------

GraphicConverter::GraphicConverter() :
	mpConvertData( NULL )
{
}

// ------------------------------------------------------------------------

GraphicConverter::~GraphicConverter()
{
}

// ------------------------------------------------------------------------

sal_uLong GraphicConverter::ImplConvert( sal_uLong nInFormat, void* pInBuffer, sal_uLong nInBufSize,
									 void** ppOutBuffer, sal_uLong nOutFormat )
{
	sal_uLong nRetBufSize = 0UL;

	if( ( nInFormat != nOutFormat ) && pInBuffer )
	{
		if( ( nInFormat == CVT_SVM ) || ( nInFormat == CVT_BMP ) )
		{
			SvMemoryStream	aIStm;
			Graphic			aGraphic;

			aIStm.SetBuffer( (char*) pInBuffer, nInBufSize, sal_False, nInBufSize );
			aIStm >> aGraphic;

			if( !aIStm.GetError() )
			{
				SvMemoryStream aOStm( 64535, 64535 );

				mpConvertData = new ConvertData( aGraphic, aOStm, nOutFormat );
				
				if( maFilterHdl.IsSet() && maFilterHdl.Call( mpConvertData ) )
				{
					nRetBufSize = aOStm.Seek( STREAM_SEEK_TO_END );
					*ppOutBuffer = (void*) aOStm.GetData();
					aOStm.ObjectOwnsMemory( sal_False );
				}

				delete mpConvertData;
				mpConvertData = NULL;
			}
		}
		else if( ( nOutFormat == CVT_SVM ) || ( nOutFormat == CVT_BMP ) )
		{
			SvMemoryStream	aIStm;

			aIStm.SetBuffer( (char*) pInBuffer, nInBufSize, sal_False, nInBufSize );
			mpConvertData = new ConvertData( Graphic(), aIStm, nInFormat );
				
			if( maFilterHdl.IsSet() && maFilterHdl.Call( mpConvertData ) )
			{
				SvMemoryStream	aOStm( 645535, 64535 );
				Graphic&		rGraphic = mpConvertData->maGraphic;

				if( ( rGraphic.GetType() == GRAPHIC_BITMAP ) && ( CVT_SVM == nOutFormat ) )
				{
					GDIMetaFile aMtf;

					aMtf.SetPrefSize( rGraphic.GetPrefSize() );
					aMtf.SetPrefMapMode( rGraphic.GetPrefMapMode() );
					aMtf.AddAction( new MetaBmpExScaleAction( Point(), aMtf.GetPrefSize(), rGraphic.GetBitmapEx() ) );
					rGraphic = aMtf;
				}
				else if( ( rGraphic.GetType() == GRAPHIC_GDIMETAFILE ) && ( CVT_BMP == nOutFormat ) )
					rGraphic = rGraphic.GetBitmapEx();

				aOStm << rGraphic;

				if( !aOStm.GetError() )
				{
					nRetBufSize = aOStm.Seek( STREAM_SEEK_TO_END );
					*ppOutBuffer = (void*) aOStm.GetData();
					aOStm.ObjectOwnsMemory( sal_False );
				}
			}

			delete mpConvertData;
			mpConvertData = NULL;
		}
	}

	return nRetBufSize;
}

// ------------------------------------------------------------------------

sal_uLong GraphicConverter::Import( SvStream& rIStm, Graphic& rGraphic, sal_uLong nFormat )
{
	GraphicConverter*	pCvt = ImplGetSVData()->maGDIData.mpGrfConverter;
	sal_uLong				nRet = ERRCODE_IO_GENERAL;

	if( pCvt && pCvt->GetFilterHdl().IsSet() )
	{
		ConvertData	aData( rGraphic, rIStm, nFormat );
		
		if( pCvt->GetFilterHdl().Call( &aData ) )
		{
			rGraphic = aData.maGraphic;
			nRet = ERRCODE_NONE;
		}
		else if( rIStm.GetError() )
			nRet = rIStm.GetError();
	}
	
	return nRet;
}

// ------------------------------------------------------------------------

sal_uLong GraphicConverter::Export( SvStream& rOStm, const Graphic& rGraphic, sal_uLong nFormat )
{
	GraphicConverter*	pCvt = ImplGetSVData()->maGDIData.mpGrfConverter;
	sal_uLong				nRet = ERRCODE_IO_GENERAL;

	if( pCvt && pCvt->GetFilterHdl().IsSet() )
	{
		ConvertData	aData( rGraphic, rOStm, nFormat );
		
		if( pCvt->GetFilterHdl().Call( &aData ) )
			nRet = ERRCODE_NONE;
		else if( rOStm.GetError() )
			nRet = rOStm.GetError();
	}
	
	return nRet;
}