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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.
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 *************************************************************/



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

#include <rtl/uuid.h>
#include <vos/mutex.hxx>
#include <vcl/svapp.hxx>
#include <vcl/image.hxx>
#include <vcl/metaact.hxx>
#include <tools/rcid.h>
#include <tools/resid.hxx>
#include <tools/resmgr.hxx>
#include <unotools/ucbstreamhelper.hxx>
#include <svl/solar.hrc>
#include <vcl/salbtype.hxx>
#include <vcl/virdev.hxx>
#include <vcl/bmpacc.hxx>
#include <com/sun/star/text/GraphicCrop.hpp>

#include "graphic.hxx"
#include "transformer.hxx"

using namespace com::sun::star;

namespace unographic {

// ----------------------
// - GraphicTransformer -
// ----------------------

GraphicTransformer::GraphicTransformer()
{
}

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

GraphicTransformer::~GraphicTransformer()
{
}

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

void setAlpha( Bitmap& rBitmap, AlphaMask& rAlpha, sal_uInt8 cIndexFrom, sal_Int8 nAlphaTo )
{
	BitmapWriteAccess* pWriteAccess = rAlpha.AcquireWriteAccess();
	BitmapReadAccess* pReadAccess = rBitmap.AcquireReadAccess();
	if ( pReadAccess && pWriteAccess )
	{
		for ( sal_Int32 nY = 0; nY < pReadAccess->Height(); nY++ )
		{
			for ( sal_Int32 nX = 0; nX < pReadAccess->Width(); nX++ )
			{
				const sal_uInt8 cIndex = pReadAccess->GetPixelIndex( nY, nX );
				if ( cIndex == cIndexFrom )
					pWriteAccess->SetPixelIndex( nY, nX, nAlphaTo );
			}
		}
	}
	rBitmap.ReleaseAccess( pReadAccess );
	rAlpha.ReleaseAccess( pWriteAccess );
}

// XGraphicTransformer
uno::Reference< graphic::XGraphic > SAL_CALL GraphicTransformer::colorChange( 
	const uno::Reference< graphic::XGraphic >& rxGraphic, sal_Int32 nColorFrom, sal_Int8 nTolerance, sal_Int32 nColorTo, sal_Int8 nAlphaTo )
		throw ( lang::IllegalArgumentException, uno::RuntimeException)
{
	const uno::Reference< uno::XInterface > xIFace( rxGraphic, uno::UNO_QUERY );
	::Graphic aGraphic( *::unographic::Graphic::getImplementation( xIFace ) );

	BitmapColor aColorFrom( static_cast< sal_uInt8 >( nColorFrom ), static_cast< sal_uInt8 >( nColorFrom >> 8 ), static_cast< sal_uInt8 >( nColorFrom >> 16 ) );
	BitmapColor aColorTo( static_cast< sal_uInt8 >( nColorTo ), static_cast< sal_uInt8 >( nColorTo >> 8 ), static_cast< sal_uInt8 >( nColorTo  >> 16 ) );
	const sal_uInt8 cIndexFrom = aColorFrom.GetBlueOrIndex();

	if ( aGraphic.GetType() == GRAPHIC_BITMAP )
	{
		BitmapEx	aBitmapEx( aGraphic.GetBitmapEx() );
		Bitmap		aBitmap( aBitmapEx.GetBitmap() );

		if ( aBitmapEx.IsAlpha() )
		{
			AlphaMask aAlphaMask( aBitmapEx.GetAlpha() );
			setAlpha( aBitmap, aAlphaMask, cIndexFrom, nAlphaTo );
			aBitmap.Replace( aColorFrom, aColorTo, nTolerance );
			aGraphic = ::Graphic( BitmapEx( aBitmap, aAlphaMask ) );
		}
		else if ( aBitmapEx.IsTransparent() )
		{
			if ( ( nAlphaTo == 0 ) || ( nAlphaTo == sal::static_int_cast<sal_Int8>(0xff) ) )
			{
				Bitmap aMask( aBitmapEx.GetMask() );
				Bitmap aMask2( aBitmap.CreateMask( aColorFrom, nTolerance ) );
				aMask.CombineSimple( aMask2, BMP_COMBINE_OR );
				aBitmap.Replace( aColorFrom, aColorTo, nTolerance );
				aGraphic = ::Graphic( BitmapEx( aBitmap, aMask ) );
			}
			else
			{
				AlphaMask aAlphaMask( aBitmapEx.GetMask() );
				setAlpha( aBitmap, aAlphaMask, cIndexFrom, nAlphaTo );
				aBitmap.Replace( aColorFrom, aColorTo, nTolerance );
				aGraphic = ::Graphic( BitmapEx( aBitmap, aAlphaMask ) );
			}
		}
		else
		{
			if ( ( nAlphaTo == 0 ) || ( nAlphaTo == sal::static_int_cast<sal_Int8>(0xff) ) )
			{
				Bitmap aMask( aBitmap.CreateMask( aColorFrom, nTolerance ) );
					aBitmap.Replace( aColorFrom, aColorTo, nTolerance );
				aGraphic = ::Graphic( BitmapEx( aBitmap, aMask ) );
			}
			else
			{
				AlphaMask aAlphaMask( aBitmapEx.GetSizePixel() );
				setAlpha( aBitmap, aAlphaMask, cIndexFrom, nAlphaTo );
				aBitmap.Replace( aColorFrom, aColorTo, nTolerance );
				aGraphic = ::Graphic( BitmapEx( aBitmap, aAlphaMask ) );
			}
		}
	}
	::unographic::Graphic* pUnoGraphic = new ::unographic::Graphic();
	pUnoGraphic->init( aGraphic );
	uno::Reference< graphic::XGraphic > xRet( pUnoGraphic );
	return xRet;
}

}